Rolls-Royce Archives
| Identifier | Entry | ||
| img001 | Coil failures in the USA and comparing service complaint procedures with the Cadillac Company. | ||
| View original record | X6017. To Sg. from Hs. c. Wor. c. Ev. c. EFC. HS2/MJL.1.31. X.8710 X.6036 COIL FAILURES X.918. The question of coil failures was brought up in U.S.A. by the Derby quarterly complaint sheet. R.R.Inc.… | ||
| img002 | Improvements in ignition coil design and experimental investigations into coils from other manufacturers. | ||
| View original record | X6058 To Sg. from EFC. c. R. Wor. c. Ey. E. Hs. EFC4/AD3.1.31. X.6058. IGNITION COILS. Answering your Sg11/E31.12.30 there has been a definite improvement in ignition coils between the 20 HP. and… | ||
| img003 | Containing remarks regarding the receipt status of Delco, De Jon, and Delco Remy coils. | ||
| View original record | X.6036. X.6101. X6101 DELCO AND DE JON COILS. 4.1.31. X.8712 X.6058. Sg. remarked in his Sg11/E3.12.30 "Have we yet received the latest Delco coil and also the De Jon coil mentioned by Hs. in his note… | ||
| img004 | Design and construction particulars for an experimental De Jon coil as fitted to Springfield Phantom I's. | ||
| View original record | X6101. TESTS OF EXPERIMENTAL COILS TO SCHEDULE. Type of coil :- De Jon as fitted to Springfield Phantom I's X.No. 6101. Date 27.1.31. Coil No. H.S.1. Particulars of design and method of construction… | ||
| img005 | Description of a bakelite moulding with a top tin flange for holding a coil in position. | ||
| View original record | -2- A bakelite moulding with the top tin flange of the case apparently moulded in, holds the coil in position by means of a circular spigot extension which fits over the core at its top end, the H.T.… | ||
| img006 | Test report detailing electrical measurements for windings, including resistance, impedance, and heating tests. | ||
| View original record | -2- (1) Continuity of windings :- OK. (2) Winding quantities :- Primary resistance 4.57 ohms at 16.5 °C. Ballast " No ballast provided " " " Secondary " 3686 " " 16.5 " Primary impedance at 50 cycles.… | ||
| img007 | Test results from intensive heating, preliminary breakdown, and primary current consumption tests on an electrical component. | ||
| View original record | -3- (6) Intensive heating tests. (a) Secondary resistance after test :- 5900 ohms. Corresponding temperature :- 180 °C. Primary current at end of test :- 1.12 amperes. Ambient temperature :- 17.5 °C.… | ||
| img008 | Test procedure sheet for low voltage, secondary voltage, coil temperature, and endurance tests. | ||
| View original record | -4- (9) Low voltage test. At 10 volts :- At 8 volts :- Minimum voltage :- (10) Measurement of secondary voltage. Maximum gap and corresponding voltage. (11) Effect of coil temperature on secondary… | ||
| img009 | Page listing a final intensive breakdown test and the examination results of windings. | ||
| View original record | -5- (13) Final intensive breakdown test. (14) Results of examination of windings. | ||
| img010 | Letter from The M-L Magneto Synd. Ltd. regarding production tests of Ignition Coils. | ||
| View original record | X6058 TELEGRAMS: "CARLTON. COVENTRY." TELEPHONE 5001-2-3 The M-L Magneto Synd. Ltd. VICTORIA WORKS, COVENTRY. Messrs. Rolls-Royce, Ltd., DERBY. [STAMP: RECEIVED 7 JAN 1931] YOUR REFERENCE EFC2/AD OUR… | ||
| img011 | Continuation sheet of a letter from M-L Magneto Synd. Ltd. regarding temperature testing conditions. | ||
| View original record | M-L MAGNETO SYND. LTD. COVENTRY. CONTINUATION SHEET No..... 1 6th January 1931. Messrs. Rolls-Royce, Ltd. higher temperature than it will on the car, owing to the absence of any draught over the… | ||
| img012 | Graph showing the relation between sparking voltage and the diameter of the central electrode. | ||
| View original record | CURVE N° 2089 REF 24 G/D 12-6-24 INITIAL IONISATION PROBABLY COMMENCED CONCENTRIC GAPS MAGNETO SINE WAVE RELATION BETWEEN SPARKING VOLTAGE & DIA. OF CENTRAL ELECTRODE DIA. OF HOLE = WIRE DIA. x 5… | ||
| img013 | New ignition coil (No. L.I.12) with L.P.S. paper insulation for testing. | ||
| View original record | X6058. RHC. from EFC. c. Hs/AJL. EFC3/AD8.1.31. X.6058. Std. Ignition coil insulated with L.P.S. paper. We hand you herewith coil No. L.I.12 wound with L.P.S. waxed paper insulation which considerably… | ||
| img014 | Test report on a standard ignition coil with its secondary insulated with L.P.S wax paper. | ||
| View original record | E.7.C. X6058. Date 9-1-31 Ref. No. WE70 X.NOS. 6058 Standard ignition coil with the secondary insulated with L.P.S wax paper. We have now tested on the bench one of these coils the other one being… | ||
| img015 | The continuation of a test on a coil, concluding it is an improvement over the standard. | ||
| View original record | WE70 (contd) (2) it had been heated at 100°C for one hour. The coil was then placed on our transformer rig for breakdown test and after 20 hours test was OK. In view therefore of the maintenance of… | ||
| img016 | Potential causes of battery ignition coil failures and design considerations. | ||
| View original record | X6058 EFC. } FROM R. Hs. E. } (At Le Canadel) R1/M15.1.31. C. Sg. Wor. PN. X.6058. BATTERY IGNITION COILS X.918. AS R. UNDERSTANDS THEY EXIST. I presume that coil failure is not due to moisture being… | ||
| img017 | Technical discussion on ignition coil design, spark plug gaps, and methods for improving insulation. | ||
| View original record | -2- RL/M15.1.31 contd. I believe that we strain our coils more than others, because we use too large a spark gap in the plugs for the compression ratio we now use. I think this gap setting should be… | ||
| img018 | Methods for improving and testing coils, with reflections on past failures due to moisture absorption. | ||
| View original record | R1/M5.1.31 contd. -3- by putting it on an alternating current circuit - i.e. test it to destruction and then make it still better insulated. And, also provide on the coil some limit to the voltage… | ||
| img019 | Extract from a monthly customer complaints report regarding ignition coils. | ||
| View original record | X6058. Extract from Monthly report of Customers' complaints ref. Hs/GWH6/KT16.1.31. X.6058. IGNITION COILS. _______ _______________ The present coil is giving more satisfactory results and complaints… | ||
| img020 | The results of tests conducted on two samples of enamelled secondary wire. | ||
| View original record | E.7.C. Ref No. WE73 X6058. Date 17-1-31 X NOS. 6058 Enamelled secondary wire We have conducted tests 4 and 5 of our enamelled wire test specification on two further samples of wire, one from a French… | ||
| img021 | Comparing various types of enamelled wire. | ||
| View original record | (2) in that report providing consistency of wire diameter can be obtained we consider Connollys to be a sound grade of wire. The French wire is apparently a better wire but not quite as good as Swiss… | ||
| img022 | Typed note discussing research on battery ignition coils by comparing them to X-ray coils. | ||
| View original record | EFC. ✓ X. 6058. PN.4/PH.21.1.31. X6058 Battery Ignition Coils. X. 918 Referring to the very interesting R1/M15.1.31., it does not occur to you that probably you might short circuit a very great deal… | ||
| img023 | Issues with magneto ignition, coil safety, and spark plug gaps on 25 HP and 45 HP cars. | ||
| View original record | X6058 Hs. EFC. EP. ) FROM R. E. RV. ) (At Le Canadel) c. SG. Wor. PN. R2/M23.1.31. X.6097. X.6098 CAR WORK - MAGNETO IGNITION X.6058 X.8970. It is understood that both the 25 HP. and 45 HP. cars will… | ||
| img024 | Investigation into the cause of recent failures in battery ignition coils. | ||
| View original record | To R. from EFC. c. Sg. c. Wor. E. c. PN. EV. Hs. X.6058 X.6058. BATTERY IGNITION COILS. X.918 Your R1/M15.1.31. Coil failures of the type that have principally occurred recently are not, we consider,… | ||
| img025 | Technical discussion on the design and magnetic properties of ignition coils and their cores. | ||
| View original record | EFC1/AD28.1.31 contd. -2- energy has to be supplied and stored in a form in which it is again available, would render the use of a completely closed magnetic circuit out of the question owing to the… | ||
| img026 | Ignition coil insulation materials, wire quality, and spark plug gap issues. | ||
| View original record | EFG1/AD28.1.31 contd. -3- The layers of winding used to be normally insulated with oil varnished paper though some improvement has been provided by using paraffin wax paper of similar thickness and… | ||
| img027 | The experimental testing of ignition coils, discussing voltage measurements, failures, and testing methods. | ||
| View original record | -4- EFC1/AD28.1.31 contd. We have produced experimentally, a coil with a larger number of secondary turns but on voltage test have not realised the proportional increase of voltage which was… | ||
| img028 | Ignition coil development, discussing insulation, testing, and comparisons with American coils. | ||
| View original record | EFC/AD28.1.31 contd. -5- With regard to the provision on the coil of some limit of voltage in the form of a safety gap, this is already intended to be provided in the distributor which is at no great… | ||
| img029 | Table detailing the resistances and inductances of primary and secondary windings for various non-trembler ignition coils. | ||
| View original record | PARTICULARS OF RESISTANCES AND INDUCTANCES OF PRIMARY AND SECONDARIES OF NON-TREMBLER IGNITION COILS. X 918 X 4596 X 918 / 24.9.26 | Coil | PRIMARY Resis. (Ω) | PRIMARY Imped. at 50~ (Ω) | PRIMARY… | ||
| img030 | Forwarding a copy of a memo received from Brock regarding battery ignition coils. | ||
| View original record | To Hs and EFC. from Wor. X. 6058 Wor2/T.29.1.31. I sent R's memo reference R1/M15.1.31 re battery ignition coils to Brock for his information, and attach herewith copy of a memo received from him for… | ||
| img031 | Improvement, cost, and manufacture of coils in response to a memo from 'R'. | ||
| View original record | Copy. X. 6058 To Wor. EJB/EG21.1.31 I thank you very much for giving me the opportunity of ready R's memo which I return herewith. This is most interesting to me and I am pleased to be able to say… | ||
| img032 | Battery ignition coils, specifically the expense of sectionalised windings and a request for manufacturer names. | ||
| View original record | X6058 PN. from EFC. X6058 X.9712. EFC2/AD23.1.31. BATTERY IGNITION COILS. We thank you for your PN4/PH21.1.31. A preliminary answer of a general nature to RL/M15.1.31 is in preparation in which the… | ||
| img033 | Mr. Brock's remarks on battery ignition coils and the circulation of a related report. | ||
| View original record | X6058 To Wor. from EFC. c. Hs. EFC9/AD29.1.31. X.6058. BATTERY IGNITION COILS. We thank you for your Wor2/F29.1.31 with attached copy of Mr.Brock's remarks on ignition coils resulting from his perusal… | ||
| img034 | Cover memo for an attached copy regarding battery ignition coils. | ||
| View original record | X6058. Sft/Mr.Brock from EFC. EFC10/AD29.1.31. X.6058. BATTERY IGNITION COILS. Herewith copy of our EFC1/AD28.1.31 for your perusal. We should be pleased if you would return this in due course as it… | ||
| img035 | Particulars of construction for a standard ignition coil to D.72503. | ||
| View original record | X 6058 30.1.31. X.6058. PARTICULARS OF CONSTRUCTION OF STANDARD IGNITION COIL TO D.72503. Core built up of Swedish iron wires 24 S.W.G. approx. 5 ozs weight. Core insulated by paxolin tube D.72455.… | ||
| img036 | Extract from a 10,000-mile report on chassis 18-GIV regarding the coil's performance. | ||
| View original record | X6058 Extract from report on 18-GIV at 10,000 miles dated 30.1.31 X.6058. COIL TO LOP. D.72503. The coil was giving its maximum spark at the finish of the mileage. There is no indication that the coil… | ||
| img037 | Requesting road tests to measure the temperatures of ignition coils under running conditions. | ||
| View original record | Hs. from EFC. c. Hs/AJL. X6058 EFC5/AD2.2.31. X.6058. TEMPERATURES ATTAINED BY IGNITION COILS UNDER RUNNING CONDITIONS. We want to make up-to-date tests on the road of the temperatures attained by… | ||
| img038 | Test report on a Springfield De Jon ignition coil that failed during a standard heating test. | ||
| View original record | E.7.C X6101 Ref. No. W877 Date 2-2-31 X.Nos. 6101 Springfield De Jon ignition coil This coil has been tested on the bench and failed during the standard heating test which our own coils pass easily.… | ||
| img039 | Coil heat test failure, with a proposal to examine the failed coil and a request to test a replacement. | ||
| View original record | WE77 Contd (2) the rate of heat dissipation. We see no reason why our own design of outside primary coil should not be ventilated. It may be the case that our heat test is too severe but nevertheless… | ||
| img040 | Examination report on a failed De Jon ignition coil. | ||
| View original record | E7C. Ref NO. WE80. X6101. Date 9-2-31. X NOS. 6101. Examination of De Jon ignition coil. We have now unwound for examination the De Jon coil which failed on our bench test as reported in WE77/2-2-31.… | ||
| img041 | The construction and specifications of a coil's primary winding. | ||
| View original record | (2) WE80 contd position by a circular spigot extension which fits over the core at the top, the H.T. terminal being in the centre of the moulding externally and the two L.T. primary terminals at each… | ||
| img042 | Document with a sketch detailing the construction and insulation of primary and secondary windings on a core. | ||
| View original record | W.E.80 The disposition (3) of primary and secondary Cont'd windings relative to the core was as shown in sketch. [DIAGRAM] TOP CORE. SECONDARY BOTTOM PRIMARY The secondary was insulated from the… | ||
| img043 | Page detailing the construction, materials, and weight of an electrical coil. | ||
| View original record | WE80 Contd. (4) had been apparently machine cut as the edges were clean and straight. Weight of secondary wire 3 3/4 oz. The secondary was wound on a paper tube over the core, which consisted of iron… | ||
| img044 | Request for an experimental test on an ignition coil using enamelled primary wire. | ||
| View original record | X6058 RHC. from EFC. EFC3/AD7.2.31. X.6058. IGNITION COIL WITH ENAMELLED PRIMARY WIRE. Will you please have made for experimental test an otherwise standard D.72503 ignition coil but with the primary… | ||
| img045 | Instruction to amend a previous order and arrange for a standard ignition coil to be fitted to chassis 22-EX. | ||
| View original record | X6058 RHC. from EFC. c. Hs/AJL. EFC4/AD7.2.31. X.6058. STANDARD IGNITION COIL INSULATED WITH L.P.S. PAPER Referring to our instruction EFC3/AD8.1.31 asking for coil No. L.I.12 to be fitted to chassis… | ||
| img046 | Laboratory tests comparing French and British sourced enamelled copper wire for ignition coils. | ||
| View original record | X6058. To By. from EFC. c. Sft/Mr.Brock. EFC10/ADL1.2.31. X.6058. IGNITION COIL SECONDARY ENAMELLED COPPER WIRE. Further to our EFC2/ADL7.9.30 two further samples of wire, one from a French firm (as… | ||
| img047 | The bench testing of a Springfield De Jon ignition coil and its subsequent failure analysis. | ||
| View original record | X6101 To R. from EFC. c. Sg. Wor. c. Ev. E. EFC2/AD11 9.2.31. X.6101. SPRINGFIELD DE JON IGNITION COIL. Bench tests on one of the above coils have been made in accordance with the Specification of… | ||
| img048 | Analysis of a coil's design, construction, materials, and primary winding specifications, including a cross-sectional sketch. | ||
| View original record | EFC2/ADL9.2.31. contd. -2- "We were unable to ascertain the cause of failure owing to the black bitumen impregnation, but it was observed that the coil was not burnt out although signs of rather… | ||
| img049 | Specifications for the construction and insulation of a coil's secondary winding. | ||
| View original record | EFC2/ADI9.2.31. contd. -3- The secondary was insulated from the primary by a paper tube .019" thick 1 1/8" diameter and 3 3/4" long which also formed a suitable base for the primary winding. The… | ||
| img050 | Cover letter for sending design details of Lucas, Delco Remy, and De Jon ignition coils. | ||
| View original record | X6101. To R.E. } From EFC. "Ray. EFC1/AD20.2.31. X6018 X6036 X6101 LUCAS, DELCO REMY AND DE JON IGNITION COILS. For your information we are sending you design details of the above three makes of… | ||
| img051 | The experimental testing of a coil with specific primary and secondary winding connections. | ||
| View original record | X6012 3.3.31. X.6012. COIL WITH INSIDE END OF SECONDARY CONNECTED TO COMMENCEMENT OF PRIMARY. No advantage was noted during experimental testing of this coil and we conclude that it is immaterial to… | ||
| img052 | Fault analysis of a D.72503 ignition coil returned for repair. | ||
| View original record | X6058. Sft/Mr.Brock. from EFC. EFC4/AMO.3.31. X.6058. IGNITION COILS FOR REPAIR With reference to your recent list of electrical items returned for repair, we should be pleased to know as to… | ||
| img053 | Examination and test report on a Marelli distributor and contact breaker. | ||
| View original record | To R. from EFC. c. Sg. c. WOR. E. c. RY. Da. X6035. EFC3/AMO.3.31. X.6035. MARELLI DISTRIBUTOR AND CONTACT BREAKER. X.6118 A Marelli distributor and contact breaker has been examined and tested and… | ||
| img054 | Test results of a unit, focusing on contact breaker noise and the condition of distributor points. | ||
| View original record | EFC3/AHO.3.31 contd. -2- "It was noticed that the noise of the contact breaker was more pronounced than standard. The amount of burning of the rotor blade and sparking point was very slight being much… | ||
| img055 | Comparison test report between their own ignition coil and American-made De Jon and Marelli coils. | ||
| View original record | X6101 To: [redacted] From: Hs/Lid. To: [redacted] To: EPC. Hs/Lid.3/KT.17.3.31. X.6058 X.6101 X.6035 AMERICAN IGNITION COILS. We have carried out some tests to compare our own ignition coil with the… | ||
| img056 | Specification for an insulation test of a moulded ignition coil case. | ||
| View original record | X6058 17.3.31. X.6011 X.6058. SPECIFICATION OF INSULATION TEST OF MOULDED IGNITION COIL CASE. The coil case to be tested, with the two electrodes in position shall be subjected to the test provided by… | ||
| img057 | The comparative laboratory tests of Messrs. West's enamelled secondary wire. | ||
| View original record | X.6058 By. from EFC. c. Sft/Mr.Brock. EFC2/AD23.3.31. .WE.90 The following is a copy of my assistant's report on Messrs. West's enamelled secondary wire :- "We have now completed some comparative… | ||
| img058 | Letter to Messrs. North & Sons, Ltd. concerning magneto primary windings and ignition coils. | ||
| View original record | X 6019 EFC7/AD. 6th March, 1931. X.6019 X.6098. Messrs. North & Sons, Ltd. Whippendell Rd. Watford. Dear Sirs, Your Mr. Allen will recollect that some time back when discussing with ourselves the… | ||
| img059 | Letter from North & Sons, Ltd. acknowledging correspondence and confirming an order of wire for magneto primary winding experiments. | ||
| View original record | X6019 COPY. MESSRS. NORTH & SONS, LIMITED. WHIPPENDENLL ROAD, WATFORD. EFC7/AD. 9th March, 1931. Messrs. Rolls-Royce Ltd. Derby. X.6019 X.6098. Dear Sirs, We beg to acknowledge receipt of your letter… | ||
| img060 | Letter to Lucas Electrical Co. Ltd. inquiring about the origin of square or rectangular enamelled wire for ignition coils. | ||
| View original record | X6019. EFCA/AD. 16th March, 1931. The Lucas Electrical Co.Ltd. Well St. Birmingham. Dear Sirs, Use of square or rectangular section/wire for magneto or ignition coil primaries. We should be pleased if… | ||
| img061 | Record of the price paid for a Marelli coil and distributor. | ||
| View original record | X6035. 31.3.31. X.4289. X.6035 Price paid by R.R. for Marelli coil and distributor. £2. 13. 3d. HEW. | ||
| img062 | Letter from M-L Magneto Synd. Ltd. concerning the source and availability of rectangular section enamelled wire. | ||
| View original record | X6019 TELEGRAMS: "CARLTON, COVENTRY." TELEPHONE 5001-2-3 The M-L Magneto Synd. Ltd. VICTORIA WORKS, COVENTRY. E.Fowler Clark, Esq., Messrs. Rolls-Royce, Ltd., DERBY. YOUR REFERENCE EFC4/AD. OUR… | ||
| img063 | Letter responding to an inquiry about square or rectangular section wire for experimental purposes. | ||
| View original record | X6019. EFC6/AD. 18th March, 1931. X.6098 X.6019 The M.L. Magneto Synd. Ltd. Victoria Works, Coventry. For the attention of Mr. E.A.Watson. Dear Sirs, We thank you for yours of the 17th inst. in answer… | ||
| img064 | Test report on a coil with an outside primary winding, detailing its failures and required modifications. | ||
| View original record | X6017. By from Hs/HEW. C. E. Hs/HEW2/ADL4.4.31. COIL WITH OUTSIDE PRIMARY WINDING D.SCH.419. We have bench tested this coil preliminarily and have found it to be very inefficient. On open circuit,… | ||
| img065 | Design specification for an experimental coil, detailing the primary and secondary windings, iron circuit, and casing. | ||
| View original record | Hs/HEW2/AM.4.4.31. contd. -2- R. is keen to delete the ballast if at all practicable as is done on Delco Remy and we consider we ought to try an outside primary coil designed accordingly. We submit… | ||
| img067 | The bench testing of ignition coils with 44 S.W.G. finer gauge secondary winding, proposing further experimentation. | ||
| View original record | X6058. By: from Hs/HEW. Hs/HEW/ADL5.6.31. IGNITION COILS WITH 44 S.W.G. SECONDARY WINDING. We have received for test 2 coils instructed by By/RDL/W30.5.31 having finer gauge secondary winding,… | ||
| img068 | Request to produce two modified ignition coils with 20,000 turns for the 40-50 HP and 20 HP chassis. | ||
| View original record | HEW X6058 RECEIVED 23 JUN 1931 RHC. c - Hs. BY/RD3/W.22-6-31. RE :- IGNITION COILS. 40-50 H.P. and 20 H.P. Chassis. With reference to the two Ignition Coils recently made in all respects to standard… | ||
| img069 | Loan of a Lucas Ignition Distributor and Coil for testing. | ||
| View original record | X6018 To Hs. ________ BY/RD7/ML.4.8.31. IGNITION APPARATUS. We hand you herewith a Lucas Ignition Distributor and Coil, which has been loaned to us for test in accordance with the arrangements made on… | ||
| img070 | Failure in standard ignition coils due to a short circuit and recommending reinforced insulation. | ||
| View original record | X6058 To Ey. from Hs/HEW. Hs/HEW3/ADL 3.8.31. STANDARD IGNITION COILS. We have had a failure on ordinary bench endurance test of a standard D.72503 ignition coil, the fault being due to a short… | ||
| img071 | Letter to Lucas Electrical Co. Ltd. regarding joint tests on ignition coils and the progress of a new windscreen wiper. | ||
| View original record | X6018 Hs/HEW2/AD. August 14th, 1931. The Lucas Electrical Co.Ltd. Well St, Birmingham. For the attention of Dr. E.O. Turner. Dear Sirs, In connection with the exchange of tests we are mutually… | ||
| img072 | Test schedule and design particulars for a Lucas Type L experimental coil. | ||
| View original record | X6018 TESTS OF EXPERIMENTAL COILS TO SCHEDULE. Type of coil :- Lucas Type L X.No. ________ Date 17-8-31 Coil No. ________ Particulars of design and method of construction :- (a) Iron circuit. (b)… | ||
| img073 | Test results for electrical windings, including continuity, quantities, and heating tests. | ||
| View original record | -2- (1) Continuity of windings :- OK (2) Winding quantities :- Primary resistance 1.00 ohms at 20 °C. Ballast " 2.53 " " 18 " Secondary " 5193 " " 19 " Primary impedance at 50 cycles. 3.77 ohms "… | ||
| img074 | Test results for intensive heating, preliminary breakdown, and primary current consumption of a coil. | ||
| View original record | -3- (6) Intensive heating tests. 4 hours 70 m.r. 700 r.p.m. 80°C. (a) Secondary resistance after test :- 7580 ohms. Corresponding temperature :- 137 °C. Primary current at end of test :- amperes… | ||
| img075 | Results of various electrical component tests including voltage and coil temperature. | ||
| View original record | -4- (9) Low voltage test. At 10 volts :- 1800 r.p.m. At 8 volts :- 578 r.p.m. Minimum voltage :- 8.8 volts (10) Measurement of secondary voltage. Maximum gap and corresponding voltage. .072" 8180… | ||
| img076 | Page from a report listing a breakdown test and the examination of windings. | ||
| View original record | -5- (13) Final intensive breakdown test. (14) Results of examination of windings. | ||
| img077 | Letter from Joseph Lucas detailing the turn ratio of an ignition coil and the availability of a new windscreen wiper. | ||
| View original record | X6018 TRADE MARK THE JOSEPH LUCAS RESEARCH LABORATORIES WELL STREET BIRMINGHAM TELEGRAMS: 'LUCAS, BIRMINGHAM' TELEPHONE: NORTHERN 5201 (Pte Bch Ex) WHEN REPLYING PLEASE REFER TO EOT/JLW.P. Messrs.… | ||
| img078 | Letter to The Joseph Lucas Research Laboratories acknowledging receipt of their letter and information. | ||
| View original record | X6018 Hs/HEW1/AD. August 21st, 1931. The Joseph Lucas Research Laboratories, Well St. Birmingham, Dear Sirs, We are in receipt of your letter ref. EOT/JLW/P. of the 18th inst. and wish to thank you… | ||
| img079 | Improved performance ignition coil and a new experimental outside primary coil design for a 25 HP car. | ||
| View original record | To R. from Hs/Wst. c. Sg. c. WOR. Ry. XG058 Hs/HEW1/A11.9.31. With reference to the last paragraph of R1/M28.8.31 referring to the ignition coil on the 25 HP. car at Brooklands, this coil was not one… | ||
| img080 | Requesting a follow-up on a proposal concerning coil ignition design for the 20/25 HP Chassis. | ||
| View original record | X6017 RECEIVED 31 SEP 1931 To Hs. from Sg. Re Coil Ignition on 20/25 HP Chassis. Sg13/E2.9.31 I have read Hs/HEW2/AD13.8.31 with considerable interest and I note that in regard to the design it is… | ||
| img081 | Coil ignition for the 20/25 HP chassis, discussing the redesign of old electrical equipment and experimentation with a new coil. | ||
| View original record | X6017 To Sg. From Hs. Hs.3/MJ.3.9.31. COIL IGNITION ON 20/25.HP. CHASSIS. Replying to Sg13/E2.9.31. We have not had a reply from R. to our report Hs/HEW2/AD.13.8.31., neither do we expect one. During… | ||
| img082 | Letter to Joseph Lucas Research Laboratories requesting additional distributor contact points for testing ignition units. | ||
| View original record | X6018 Hs/Wst.1/AD. September 4th, 1931. The Joseph Lucas Research Laboratories, Well St, Birmingham. For the attention of Dr. E.O. Turner. Dear Sirs, In order to satisfactorily complete our tests of… | ||
| img083 | Letter from Joseph Lucas Research Laboratories regarding the supply of distributor contacts for testing. | ||
| View original record | Y6018 TRADE MARK THE JOSEPH LUCAS RESEARCH LABORATORIES TELEGRAMS: "LUCAS, BIRMINGHAM." WELL STREET WHEN REPLYING PLEASE REFER TO TELEPHONE: NORTHERN 5201 (PRIVATE) BIRMINGHAM EOT/JLW.P. 8th September… | ||
| img084 | Letter to Joseph Lucas Research Laboratories questioning the design of a distributor's contact lever. | ||
| View original record | X6018 Hs/Wst.4/AD September 29th, 1931. The Joseph Lucas Research Laboratories, Well St, Birmingham. For the attention of Dr. E.O. Turner. Dear Sirs, We notice on the distributor we are testing for… | ||
| img085 | Letter from Joseph Lucas Limited regarding the insulation of a distributor's contact lever or screw. | ||
| View original record | X6018 REGISTERED OFFICES & GENERAL DEP'TS GREAT KING STREET. BIRMINGHAM LONDON OFFICE & SHOWROOMS 319, REGENT STREET, W.I. LUCAS 'KING OF THE ROAD' LAMPS LUCAS STARTING & LIGHTING EQUIPMENT FOR CARS.… | ||
| img086 | Requesting the removal of an ignition coil and ballast from chassis 19-CIV to investigate a mysterious fault. | ||
| View original record | X6058 RHC. from Hs/Wst. Hs/Wst.2/AD21.10.31. X6058 X7720 Will you please have the ignition coil and ballast removed from chassis 19-CIV and handed to us, as GWH. wishes us to carry out a test with… | ||
| img087 | Design of an ignition system and a cheaper sequence starter, mentioning the 'Peregrine' starter. | ||
| View original record | COPY. x6058 HS/WST. FROM R. R3/M27.10.31. X6058 X5620 C. to SG. WOR. BY. ELECTRICAL WORK IGNITION & STARTER. I understand that you are expecting WW. to send you a design for an ignition with external… | ||
| img088 | Requesting the production of two ignition coils with modified specifications. | ||
| View original record | X6058 RHC/H. Smith from Hs/Wstl Hs/Wst.4/AD30.10.31. IGNITION COILS. Will you kindly have produced for us two more ignition coils to D.72503 but with 21,000 turns of 44 S.W.G. wire on the secondary.… | ||
| img089 | The examination of competitor ignition coils and testing a new type of starter motor. | ||
| View original record | To R. from Hs/Wst. c. Sg. c. Wor. Ev. X6017 Hs/Wst.7/AD30.10.31. X6017 X3374 ELECTRICAL WORK. Re R.3/M27.10.31. We are arranging to send you under separate cover two samples of outside primary… | ||
| img090 | Sending two different ignition coils to Sir Henry Royce for examination. | ||
| View original record | D/BP. from Hs/Wst. c. Despatch Stores. X6101 Hs/Wst.8/AD30.10.31. X6035 X6101 We are sending into the Stores, one Marelli and one De Jon ignition coil. Will you please arrange for these to be… | ||
| img091 | Arranging for two foreign ignition coils to be sent to Sir Henry Royce for examination. | ||
| View original record | K6017 To D/BP. from Hs/Wst. c. to G/Mt. Hs/Wst.9/KT.3.11.31. We are sending into the stores a box containing two foreign ignition coils, one of them dismantled. Will you please arrange to despatch… | ||
| img092 | Examination of various ignition coils to inform the design of a new coil. | ||
| View original record | 86017 To R. from Hs/Wst. Hs/Wst.5/KT.3.11.31. OUTSIDE PRIMARY ARMOURED CASE IGNITION COIL. In response to your telephone call of the 2nd. inst, we are sending you under separate cover a latest type… | ||
| img093 | Design and construction details for the Delco-Remy ignition coil. | ||
| View original record | PARTICULARS OF DESIGN AND METHOD OF CONSTRUCTION OF THE DELCO-REMY IGNITION COIL (a) Iron Circuit. Square section made up with 22 soft iron strips 4" long .330" wide .025" thick. Iron sheath,… | ||
| img094 | Design and construction details for a De Jon ignition coil. | ||
| View original record | PARTICULARS OF DESIGN AND METHOD OF CONSTRUCTION OF DE JON IGNITION COIL. (a) Iron Circuit. Consists of two parts, the inner core composed of 36 plates 3.200" x .410" x .016" together with an outside… | ||
| img095 | Suggested scheme of windings for an outside primary ignition coil design. | ||
| View original record | SUGGESTED SCHEME OF WINDINGS FOR R.R. DESIGN OF OUTSIDE PRIMARY IGNITION COIL. Primary. 400 turns of 23 S.W.G. S.C.C. enamelled wire Length of mean turn 6.00" Approx. resistance cold 3.60 ohms. Watts… | ||
| img096 | Design and production requirements for an ignition coil for the 'Peregrine' car model. | ||
| View original record | EXTRACT FROM :- x6058. HS. } FROM R. BY. } C. to Sg. Wor. CAR DESIGN WORK R.2/M.10.11.31. X6058. IGNITION COIL. The samples of the 4 different makes so so much a like as to suggest an exact copy, and… | ||
| img097 | Letter to Joseph Lucas Research Laboratories detailing test results and criticisms of a Lucas battery ignition system. | ||
| View original record | X6018 c. EV. Hs/Wst.5/AD. November 20th, 1931. Dr. E.O. Turner, The Joseph Lucas Research Laboratories, Well St. Birmingham. Dear Dr. Turner, Lucas Battery Ignition. We have now completed tests on the… | ||
| img098 | The disappointing electrical performance of an ignition coil, with results from laboratory tests. | ||
| View original record | -2- With regard to the ignition coil, we must confess to being disappointed with its electrical performance. Neither on the bench or on the road did its performance equal that obtained from our own… | ||
| img099 | Results of secondary voltage and endurance tests performed on an electrical coil. | ||
| View original record | -3- (5) Secondary Voltage. The maximum steady discharge voltage given by the coil cold we found to be 8200 volts. This figure is really only approximate as our means of measuring these voltages is not… | ||
| img100 | Dispatch of a Lucas ignition distributor and coil to the stores for return to the Joseph Lucas Research Laboratories. | ||
| View original record | X6018 Roy, from Hs/Wst. c. Despatch Stores. Hs/Wst.1/AD21.11.31. LUCAS BATTERY IGNITION. We are sending into the Stores one Lucas ignition distributor one " " coil These were loaned to us and should… | ||
| img101 | Despatch of two sets of Lucas battery ignition contact breaker points for Sir Henry Royce. | ||
| View original record | D/BP. from Hs/Wst. c. Roy. c. Despatch Stores. X6018 Hs/Wst.5/AD21.11.31. We are sending into the Stores, two sets of Lucas battery ignition contact breaker points. Will you please arrange to despatch… | ||
| img102 | Test report summarizing the results and particulars of a Lucas battery ignition distributor and coil. | ||
| View original record | X6018 To R. from Hs/Wst. c. Sg. c. Wor. E. c. Da. RV. Hs/Wst.1/AD23.11.31. LUCAS BATTERY IGNITION. X6018 We have recently had submitted to us for test by Mr. E.O. Turner of the Lucas Research… | ||
| img103 | Ignition coil performance, comparing a Lucas coil with a ballast to other competitor models and noting its inferiority when hot. | ||
| View original record | -2- Hs/Wst.1/AD23.11.31 contd. of the spark segments prevents to a large extent burning of the surface due to local heating. We think this distributor would cause much more trouble due to contact… | ||
| img104 | Report comparing the performance of a Lucas ignition coil against other manufacturers' coils under various test conditions. | ||
| View original record | Hs/Wst.1/AD23.11.31 contd. -2- of the spark segments prevents to a large extent burning of the surface due to local heating. We think this distributor would cause much more trouble due to contact… | ||
| img105 | Change in design for electrical ignition coils and L.T. contact makers. | ||
| View original record | HS/WST. FROM R. X6017 C. to SG. WOR. BY. R5/M28.11.31 Sent off 30.11.31 ELECTRICAL IGNITION. X.6017. X.6118 X.8095 COILS. We arranged to proceed with a change of design of coil with the external… | ||
| img106 | Letter from Joseph Lucas Ltd. regarding ignition system tests and a future meeting. | ||
| View original record | X6018 REGISTERED OFFICES & GENERAL DEPTS. GREAT KING STREET. BIRMINGHAM. LONDON OFFICE & SHOWROOMS 319, REGENT STREET, W.1. JOSEPH LUCAS LIMITED ELECTRICAL DEPARTMENT WELL STREET BIRMINGHAM TELEPHONE:… | ||
| img107 | Page 2 of a letter from Joseph Lucas Ltd. to Messrs. Rolls-Royce Ltd. | ||
| View original record | F/go JOSEPH LUCAS LTD., PAGE 2 DATE To Messrs. Rolls-Royce Ltd. 3rd December 1931 pleased to have the opportunity of discussing the whole matter with you, and endeavouring to draw as many useful… | ||
| img108 | The results of an endurance test on a Type VL.45 distributor and coil. | ||
| View original record | REPORT ON RESULT OF ENDURANCE TEST ON THE ROLLS ROYCE TYPE VL.45 DISTRIBUTOR AND COIL. ------------ The above equipment was run on the standard endurance test at 1,600 distributor r.p.m. on 14 volts,… | ||
| img109 | 6-cylinder ignition equipment manufactured by Messrs Rolls Royce Ltd. | ||
| View original record | REPORT ON 6 CYL. IGNITION EQUIPMENT MANUFACTURED BY MESSRS ROLLS ROYCE LTD. 12 volt 6 cyl: Distrib: No.VL.45. Non automatic. Coil No. D.72503.SR95X. Clockwise rotation, earth return. The ignition… | ||
| img110 | The design and performance of distributor and ignition system components. | ||
| View original record | -2- The heel centre is approximately 1" from the pivot, so that .002" wear on the heel causes the contacts to close .003". The flat spring not definitely attached to the lever is used in conjunction… | ||
| img111 | Coil performance with details on current, inductance, and ballast design. | ||
| View original record | The performance of the coil is shown in the attached design sheet No. , performance sheet and curve LD.260. It will be seen that the current to give 10 KV with a .12 mfd condenser is 1.48 amps, which… | ||
| img112 | Comparison of specifications for distributors and ignition coils. | ||
| View original record | DISTRIBUTOR COMPARISON DF6 Rolls Royce Distrib. Diam. of jump spark track 2" 2.27" Tracking distance between} 1.5" Inside 0.9" outer segments } distrib. Tracking distance between} 1.6" 1.125" centre… | ||
| img113 | Note on distributor RPM performance figures and poor hot starting factors with a large condenser. | ||
| View original record | OQ68 Rolls Royce Max.dist.R.P.M. to 12.5 KV at 2250 RPM. Approx. 3000 give 10KV. 8.0 2300. RPM. see attached analysis sheet and blue print LD.230 for performance. Note the very poor hot starting… | ||
| img114 | Ignition coil analysis sheet. | ||
| View original record | Test Ref. No. IGNITION COIL ANALYSIS SHEET D72503 Type: Rolls Royce. Serial No: SR95K. Voltage: 12. Cyl No: 6. Windings: Primary: S.W.G. ____ Turns ____ Insulation ____ Secondary: S.W.G. " Turns "… | ||
| img115 | Letter to Joseph Lucas Research Laboratories asking why coils are filled with pitch or bitumen, making them irreparable. | ||
| View original record | X6018 Hs/Wst.2/AD. December 16th, 1931. The Joseph Lucas Research Laboratories, Well St, Birmingham. For the attention of Dr. E. A. Watson. Dear Sirs, We omitted to ask you at the conference on Friday… | ||
| img116 | Letter from Joseph Lucas Limited discussing the use of bitumen for filling coils. | ||
| View original record | X6017 REGISTERED OFFICES & GENERAL DEPTS GREAT KING STREET, BIRMINGHAM LONDON OFFICE & SHOWROOMS 319, REGENT STREET, W. 1. LUCAS "KING OF THE ROAD" LAMPS LUCAS-C.A.V-ROTAX ELECTRICAL EQUIPMENT FOR… | ||
| img117 | Letter from Joseph Lucas Limited discussing the technical specifications of a Q12 type non-ballasted coil. | ||
| View original record | REGISTERED OFFICES & GENERAL DEP'TS GREAT KING STREET, BIRMINGHAM LONDON OFFICES & SHOWROOMS 319, REGENT STREET, W.1. TRADE MARK X6018 LUCAS 'KING OF THE ROAD' LAMPS LUCAS STARTING & LIGHTING… | ||
| img118 | Letter to Joseph Lucas Ltd. regarding ignition coils, ignition sets, and starter motor production tests. | ||
| View original record | X6018 Hs/Wst.2/AD. 1st January, 1932. Messrs. Joseph Lucas Ltd. Great King St. Birmingham. For the attention of DR. E.A. Watson. Dear Sirs, We thank you for the ignition coil kindly sent along for our… | ||
| img119 | Letter from Joseph Lucas Limited acknowledging receipt of a letter. | ||
| View original record | X6018. REGISTERED OFFICES & GENERAL DEP'TS GREAT KING STREET, BIRMINGHAM LONDON OFFICE & SHOWROOMS 319, REGENT STREET, W. I. JOSEPH LUCAS LIMITED ELECTRICAL DEPARTMENT WELL STREET BIRMINGHAM… | ||
| img120 | Comparison report between a 21000 turn secondary coil and a standard 18000 turn secondary coil. | ||
| View original record | X6058. 18. 1. 32. 21000 TURN SECONDARY COIL D.72503 44 SWG VERSUS 18000 TURN SECONDARY COIL 42 SWG. (STD) Comparing these coils side by side we have :- (a) Turns per layer. With the 21000 turn coil… | ||
| img121 | Technical memorandum discussing alternative construction methods for an ignition coil core and windings. | ||
| View original record | HS. E.) FROM R. BY. ) (At Le Canadel.) x6058 R2/M24.1.32. Sent from WW.28.1.32. C. to SG. WOR. RG. DA. IGNITION COIL. X.6058. I do not think we can very conveniently roll up a core for the above from… | ||
| img122 | Letter to Joseph Lucas Ltd. inquiring about the supplier and specifications of flat iron strips for ignition coil cores. | ||
| View original record | X6058. Hs/Wst.7/AD. February 1st, 1932. Messrs. Joseph Lucas Ltd. Great King St. Birmingham. For the attention of Mr. W.E. Robinson. Dear Sirs, We are making the experiment of using flat strips of… | ||
| img123 | Letter from Joseph Lucas Limited identifying their supplier, Joseph Sankey & Sons Ltd, for 'Stalloy Iron' used in flat strips for ignition cores. | ||
| View original record | X6058. REGISTERED OFFICES & GENERAL DEPTS GREAT KING STREET, BIRMINGHAM LONDON OFFICE & SHOWROOMS 319, REGENT STREET, W. 1. JOSEPH LUCAS LIMITED ELECTRICAL DEPARTMENT WELL STREET BIRMINGHAM TELEPHONE:… | ||
| img124 | The experimental construction of ignition coil cores using Stalloy iron strips. | ||
| View original record | X6058 To R. from Hs/wst. c. Sg. Mor. c. H. S. Dy. Hs/wst.1/AD4.2.32. IGNITION COIL CORES. With reference to H2/M24.1.32, we are arranging to obtain some Stalloy iron strips similar to that used by… | ||
| img125 | Request for Stalloy iron strips from Joseph Sankey & Sons Ltd for ignition coil core experiments. | ||
| View original record | Roy. from Hs/Wst X6058 Hs/Wst.2/AD4.2.32. IGNITION COIL CORES In connection with some experiments we wish to make on the above, we require some iron strips of Stalloy iron from Joseph Sankey &… | ||
| img126 | Proposal for a visit to Lucas Research Laboratories to discuss winding coils and making up condensers for automobile electrical equipment. | ||
| View original record | X6018 Wor. From HS/Wst. HS/Wst.12/MA.5. 2. 32. X3374 We are proposing to visit the Lucas Research Laboratories in the near future in order to compare notes with Dr Turner and ascertain the latest… | ||
| img127 | Letter to Joseph Lucas Ltd. proposing a collaborative visit to their research laboratories. | ||
| View original record | X6018 HS/Wst.2/AD. February 9th, 1932. X3374 Messrs. Joseph Lucas Ltd. Great King St. Birmingham. For the attention of Mr. R.M. Smith. Dear Sirs, When Mr. Thacker visited us last I mentioned that I… | ||
| img128 | Letter from Joseph Lucas Research Laboratories arranging a visit to their works. | ||
| View original record | X6018 THE JOSEPH LUCAS RESEARCH LABORATORIES TRADE MARK TELEGRAMS: "LUCAS, BIRMINGHAM" TELEPHONE: NORTHERN 5201 (PBE) WELL STREET BIRMINGHAM WHEN REPLYING PLEASE REFER TO RMS/P. Messrs. Rolls Royce… | ||
| img129 | Standardisation of an ignition coil with 21,000 turns of 44 S.W.G. wire on the secondary to improve performance. | ||
| View original record | RR 78B (10M) (B459. 24-10-30) 6/3185. 6058 COMPLETED 16.2.32. STANDARDISATION of CHASSIS PARTS. Date 5.1.32. X No. 6058. Drawing No. Part List Description of Parts. IGNITION COIL TO D.72503 BUT WITH… | ||
| img130 | Letter to Joseph Lucas Research Laboratories discussing a Scintilla dynamo, Bijur system drive patents, and rubber for windscreen wiper blades. | ||
| View original record | X6018 Hs/Wst.4/AD. February 19th, 1932. The Joseph Lucas Research Laboratories, Well St. Birmingham. For the attention of Mr. R.M. Smith. Dear Sirs, Thank you very much for the extremely interesting… | ||
| img131 | Lucas high-frequency horns for a Phantom chassis and the acquisition of a condenser winding machine. | ||
| View original record | -2- Hs/Wst.4/AD.19.2.32. contd. (4) Lucas high frequency horns. With reference to the special extra loud horn which you have produced, we are now building up a special high speed Phantom chassis which… | ||
| img132 | Visit to Messrs. Lucas to discuss automotive electrical components. | ||
| View original record | To R. from Hs/Wst. c. Sg. c. WOT. R. c. Ma. Ev. Y6018 Hs/Wst.1/AD20.2.32. VISIT TO MESSRS. LUCAS. Y6092 Mr. Brock and myself visited Messrs. Lucas on Wednesday the 17th inst. During the morning we… | ||
| img133 | Letter from The Joseph Lucas Research Laboratories regarding various components including a dynamo, horns, and windscreen wipers. | ||
| View original record | X6018 THE JOSEPH LUCAS RESEARCH LABORATORIES TRADE MARK TELEGRAMS: "LUCAS, BIRMINGHAM" TELEPHONE: NORTHERN 5201. (2 LINES) WELL STREET BIRMINGHAM WHEN REPLYING PLEASE REFER TO RMS/P. Messrs. Rolls… | ||
| img134 | Letter from Joseph Lucas Ltd. regarding the correct dimensions for spark gaps and enclosing a related paper. | ||
| View original record | p/go JOSEPH LUCAS LTD., PAGE 2. DATE 25.2.31 To Messrs. Rolls Royce Limited, Derby. With reference to the paragraph in your letter of February 22nd. re the correct dimensions of spark gaps for 8 KV… | ||
| img135 | The type and rotation of distributors required for condensers. | ||
| View original record | X6018 Roy/Ms. from Hs/Wst. Hs/Wst2/AD29.2.32. The type of distributors we require these condensers for are DF.6. anti-clockwise rotation and type N-O clockwise rotation. Hs/Wst. | ||
| img136 | Request to obtain two standard Lucas ignition distributor condensers. | ||
| View original record | X6018 Roy. from Hs/Wst. Hs/Wst.2/AD25.2.32. LUCAS IGNITION CONDENSERS Will you kindly obtain for us either locally or from the makers direct, two standard Lucas ignition distributor condensers.… | ||
| img137 | Technical memo discussing the design and positioning of the ignition wiring and coil. | ||
| View original record | R. FROM E. X6017 E3/M14.3.32. X.6058 C. to SG. WOR. HS. BY. J. 3. IGNITION WIRING & COIL MOUNTING. Please find herewith print Lec.3004. shewing the above. The ignition wire tube is made up of two… | ||
| img139 | Design proposals and challenges for an inside secondary ignition coil. | ||
| View original record | WST X6017 RECEIVED 1932 MAR. 17 B/C - Hs. BY/RD6/W.17-3-32. Re :- Ignition Coil. (R2/M.24-1-32) We attach hereto one blue print of "D" Scheme 533, of an Inside Secondary Ignition Coil. We have… | ||
| img140 | Design proposals for the Japan 3 and Peregrine ignition coil, focusing on the iron core and magnetic circuit. | ||
| View original record | SECRET. X6017 To R. from Hs/Wst. c. Sg. c. Wor. E. c. Da. RV. Hs/Wst.3/AM.8.3.32. JAPAN 3. AND PEREGRINE IGNITION COIL. With reference to R2/M24.1.32 we have been further considering the proposals… | ||
| img141 | Letter from Joseph Lucas Research Laboratories regarding the rescheduling of a conference. | ||
| View original record | X6058 TRADE MARK THE JOSEPH LUCAS RESEARCH LABORATORIES TELEGRAMS: "LUCAS, BIRMINGHAM" TELEPHONE: NORTHERN 5201 (PRIVATE) WELL STREET BIRMINGHAM WHEN REPLYING PLEASE REFER TO RMS/P. Messrs. Rolls… | ||
| img142 | Letter to Joseph Lucas Ltd. arranging a meeting for the 6th of April. | ||
| View original record | X6058 HS/Wst.3/MA. March 30th, 1932. Messrs. Joseph Lucas Ltd., Research Laboratories. Well Street, Birmingham. For the attention of Mr. R.M.Smith. Dear Sirs, With ref to your letter of the 25th,… | ||
| img143 | Ignition system issues, including coil design, spark plug gaps, and slow-speed failures. | ||
| View original record | HS/WST. ) FROM R. E. BY. ) (At Le Canadel.) X6012 K3199 RL/M2.4.32. Sent from W.W. 5.4.32. C. to SG. WOR. PN. K.3199 CAR ELECTRICAL WORK - IGNITION. I was not in favour of increasing the secondary… | ||
| img144 | Requesting the production of two ignition coils, listing the required parts and materials. | ||
| View original record | RHC c - Hs/Wst. X6X60F017 BY/RD3/W.11-4-32. RE :- IGNITION COIL. Any Chassis. WST Will you please put in hand two Ignition Coils in accordance with L.O.P. D.73509, print herewith. This Part List only… | ||
| img145 | Query regarding the effectiveness of a modified ignition coil for high compression engines. | ||
| View original record | WST X6058 S/W. Hs/Wst...from PN. Copy to Sg. E. By. PN.3/WT11.4.32. Ignition. In reply to your Hs/Wst/7/AD 8.4.32 the point in my PN.5/WT6.4.32 was really to query whether even with our modified… | ||
| img146 | Poor quality of Parafin Wax for ignition coils and a proposal to test samples from a new supplier. | ||
| View original record | X6058 HS/Wst. SFT/EJB1/EG.14.4.32. The Parafin Wax we use for dipping the ends of the Ignition Coils and which we originally obtained from Messrs. Symonds usually arrived in such a filthy condition… | ||
| img147 | Clarifying a discrepancy and communication breakdown regarding the number of turns specified for an ignition coil. | ||
| View original record | HS/Wst. X6058 BY/RD3/W.14-4-32. Re :- Ignition Coil. With reference to your telephone conversation pointing out that the Ignition Coil had 20,000 turns on the Secondary instead of 21,000 which is… | ||
| img148 | Clarifying a misunderstanding about the number of turns in an ignition coil's secondary winding. | ||
| View original record | X6045 By. From Hs/Wst. c. to By/Rd. Hs/Wst.2/MA.16.4.32. PRESENT STANDARD IGNITION COIL WITH THINNER SECONDARY WIRE AND INCREASED NUMBER OF SECONDARY TURNS. It appears there has been a little… | ||
| img149 | Comparative test on two paraffin wax samples for ignition coil impregnation. | ||
| View original record | X6058 By. From Hs/Wst. c. Sft/Mr. Brock. HS/Wst.13/MA.20.4.32. IGNITION COIL IMPREGNATING PARAFFIN WAX. Mr. Brock has handed to us for comparative test a sample of symonds paraffin and a sample of wax… | ||
| img150 | The comparative insulation tests of two different paraffin wax samples. | ||
| View original record | COMPARATIVE TESTS OF SAMPLES OF PARAFFIN WAX. An insulation testing electrode having a diameter of 1.7 inches was placed in a metal container having a diameter of 4.25 inches this was then filled with… | ||
| img151 | Order request for enamelled copper wire for an experimental ignition coil. | ||
| View original record | X6017 Ray. from Hs/Wst. Hs/Wst.3/AD.26.8.32. EXPERIMENTAL IGNITION COIL Will you please order for the above to Order No. 54733, 2 lbs. of 23 S.W.G. enamelled copper wire. Hs/Wst. | ||
| img152 | Increased insulation for the standard ignition coil D.72503. | ||
| View original record | By/RD. from Hs/Wst. X6058 Hs/Wst.1/AD9.6.32. STANDARD IGNITION COIL D.72503 WITH INCREASED TURNS ON THE SECONDARY WINDING. Confirming our conversation regarding the secondary insulation of the above… | ||
| img153 | To Roy stating a lack of interest in coils, with an attached letter from Enfield Equipment Co.Ltd. | ||
| View original record | Roy. from Hs/Wst. V918. Hs/Wst.1/AD23.6.32. Re the attached. At the moment we are not interested in these coils. Hs/Wst. Attached. Letter from Enfield Equipment Co.Ltd. | ||
| img154 | Letter to Joseph Lucas Ltd. about receiving an incorrect ignition coil and distributor, and requesting an exchange. | ||
| View original record | X6018 Hs/Wst.8/MA. July 6th, 1932. Messrs. Joseph Lucas Ltd., Great King St., Birmingham. For the attention of Mr. Toulmin. Dear Sirs, We have now received the ignition coil and distributor referred… | ||
| img155 | Letter from Joseph Lucas Ltd. concerning an ignition coil and distributor. | ||
| View original record | WST X6018 REGISTERED OFFICES & GENERAL DEPTS. GREAT KING STREET, BIRMINGHAM. LONDON OFFICE & SHOWROOMS 319, REGENT STREET, W.1. LUCAS "KING OF THE ROAD" LAMPS LUCAS STARTING & LIGHTING EQUIPMENT FOR… | ||
| img156 | Preliminary tests on the new type J.3 and Peregrine ignition coil. | ||
| View original record | X6017 To R. from Hs/Wst. c. Sg. Hór. c. S. Ds. c. Hy. Hdy. NEW TYPE J.3 AND PEREGRINE IGNITION COIL We have now conducted some preliminary tests on the above coil which is the design with outside… | ||
| img157 | Requesting further J.3 and Peregrine ignition coils and suggesting a modification to the magnetic circuit. | ||
| View original record | X6017 By. from Hs/Wst. c. Wor. c. E. c. Hy/RD. Hs/Wst.2/ADS.9.32. J.3 AND PEREGRINE IGNITION COIL We should be glad if you will have instructed for us a further two coils of the new type outside… | ||
| img158 | Inspection and test report for a Lucas Ignition Distributor Type X3-1. | ||
| View original record | RR 23B (150 BKS.) (DB 461-8-12 24) MP 306975 X 6018 ROLLS-ROYCE, LTD. INSTRUCTIONS. To: WST Order No.: Customer's No.: Lucas Ignition Distributor Type X3-1 We have now inspected and bench tested a… | ||
| img159 | Instructions regarding spring trouble in a Derby connection, detailing the construction and adjustment of the distributor lever mechanism. | ||
| View original record | RR 238 (150 BKS.) (DB 401-8-12 44) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To Cont'd Order No. Customer's No. 19 The spring trouble is liable to be experienced due to Derby connection. The lever is… | ||
| img160 | Inspection report on a distributor's machined iron casting, detailing ventilation, lubrication, contact gap, and make-ratio. | ||
| View original record | RR 23B (150 BKS.) (DB 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To Cont'd 19 Order No. Customer's No. is a machined iron casting. One noticeable feature is the large ventilation holes in… | ||
| img161 | Report detailing the construction and specifications of a condenser and distributor rotor. | ||
| View original record | RR 238 (150 BKS.) (D9 461-8-12 24) MP 306875 ROLLS-ROYCE LTD. INSTRUCTIONS. To fontde Order No. Customer's No. The condenser is of circular construction and is housed externally The connection from… | ||
| img162 | Instructions and a diagram showing the relative position of rotor and distributor segments when the points are just breaking. | ||
| View original record | ROLLS-ROYCE LTD. INSTRUCTIONS. To: Cont'd Order No. Customer's No. 19__ Lead. The relative positions of rotor and distributor segments were noted when the points were just breaking. This is shown in… | ||
| img163 | Request to return a faulty Lucas M3/O ignition coil that broke down during experimental testing. | ||
| View original record | D/BP. G/Mt. ROY. X6018 Hs/Wst.3/KT. 22.10.32. LUCAS IGNITION COIL. Will you please arrange to return to Messrs Lucas, one type M3/O ignition coil, number 3230, which we have been testing… | ||
| img164 | Letter to Messrs Lucas Ltd regarding a faulty six-cylinder ignition coil that broke down during testing. | ||
| View original record | X6018 Hs/Wst. 4/KT. Oct. 22nd, 1932. Messrs Lucas Ltd, Great King Street, Birmingham. For the attention of Mr. E.A. Watson. Dear Sirs, Some time ago we received from your company a complete six… | ||
| img165 | 500-hour endurance test for a Lucas Distributor Type X3-1. | ||
| View original record | RR 238 (150 BKS.) (DB 481-8-12 24) MP 306975 X6018 copy for file ROLLS-ROYCE LTD. INSTRUCTIONS. To: HEW Order No. Customer's No. 500 Hours Endurance Test on Lucas Distributor Type X3-1 The above… | ||
| img166 | The condition of a distributor, comparing it to the Peregrine and a new double-breaker model. | ||
| View original record | RR 238 (150 BKS.) (DB 451-8-12-24) MP 306975 ROLLS-ROYCE, LTD. INSTRUCTIONS. To: board Order No. ______ Customer's No. ______ 19__ (3) it is immaterial in which direction the grain lies as the cam is… | ||
| img167 | Continued report on the condition of distributor components, including the rotor blade and rubbing blocks. | ||
| View original record | RR 238 (150 BKS.) (DB 451-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: Cont'd Order No. Customer's No. 19 resistance on the coil is totally enclosed it is very unlikely that this had any bad… | ||
| img168 | Letter from Joseph Lucas Ltd. arranging a meeting to discuss a paper on ignition coil discharge. | ||
| View original record | HEAD OFFICES & WORKS: GREAT KING ST., BIRMINGHAM. CONTRACTORS TO THE ADMIRALTY, WAR OFFICE, AIR MINISTRY, INDIA OFFICE, G.P.O. AND LEADING RAILWAYS. "KING OF THE ROAD" LAMPS, HORNS, 'CYCLEALITIES'… | ||
| img169 | Request for three iron cores of Stalloy strip for testing a new type R.R. ignition coil. | ||
| View original record | BY/RD. from Hs/Wst. x6017 Hs/Wst.2/KT.22.3.33. NEW TYPE R.R. IGNITION COIL. Will you please instruct for our test as soon as possible, three iron cores of Stalloy strip to suit the above ignition… | ||
| img170 | Recommended modifications for a new universal standard ignition coil following laboratory testing. | ||
| View original record | 86017 To E. From Hs/Wst. c. By. By/RD. NEW TYPE UNIVERSAL STANDARD IGNITION COIL FOR ALL CHASSIS. As a result of laboratory tests on the new type R.R. ignition coil with outside primary winding we… | ||
| img171 | Coil design, discussing primary winding temperature, resistance, and suggestions for improvement. | ||
| View original record | -2- Hs/Wst.9/KT.4.4.33. cont'd. whole coil so that the distance between the core and the coil case is at least 1/8". It might be preferable to manufacture this pedestal moulding in some other… | ||
| img172 | Requesting a design review for an external primary ignition coil. | ||
| View original record | RECEIVED To DY/RD. from E. c. Hs/Wst. WST x6058 E.1/HP.5.4.33. External Primary Ignition Coil. Referring to Hs/Wst.9/KT.4.4.33, I should like to go over this design with you when you have had time to… | ||
| img173 | Results of high-temperature tests on a Bosch porcelain insulator versus a Bakelite insulator for a new ignition coil. | ||
| View original record | x6058 E. From Hs/Wst. c. to By/RD. Hs/Wst.1/MA.10.4.33. NEW TYPE RR. IGNITION COIL. With further reference to our Hs/Wst.9/KT.4.4.33., page two where we refer to the relative merits of insulators at… | ||
| img174 | Correct terminal markings for a spare ignition coil for Bensport. | ||
| View original record | To Hs/Wst. from E. c.c. B/RD. WST x605'8. E.8/HP.20.4.33. Spare ignition Coil for Bensport. Replying to your memo Hs/Wst.1/MA.20.4.33, I assume you refer to JNR's suggestion with regard to marking the… | ||
| img175 | Proposal for mounting and engraving a spare ignition coil for a Bensport. | ||
| View original record | x6058 E. From Hs/Wst. c. to By/RD. Ha/Wst.1/MA.20.4.33. SPARE IGNITION COIL FOR BENSPORT. In connection with the proposal to mount a spare ignition coil on the Bensport it has been suggested that, in… | ||
| img176 | Requesting clarification on the circumstances of ignition coil failures on experimental cars. | ||
| View original record | 86017 To Hs/Wst. from E. E.l/HP.10.6.33. c. Wor. By. re Ignition Coil. With reference to the verbal report of certain ignition coil failures, we understand that these are confined to experimental… | ||
| img177 | Ignition coil failures on a Bensport engine test bed. | ||
| View original record | E. From Hs/Wst. c. to Wor. c. to By. x6017. Hs/Wst.6/MA.12.6.33. IGNITION COIL. Answering your E.1/HP.10.6.33., the failures we have experienced have occurred, one on the Bensport engine test bed… | ||
| img178 | Request for a special standard ignition coil with a modified third terminal. | ||
| View original record | x6017 Sft/Mr.Brock. From Hs/Wst. Hs/Wst.5/MA.6.10.33. Will you please have made for us a special standard ignition coil as follows :- Instead of connecting one end of the secondary to the primary we… | ||
| img179 | Letter to Professor G.I. Finch requesting oscillograms of a standard ignition coil. | ||
| View original record | 86017. Hs/Wst.1/MA. 7th October 1933. Professor G.I. Finch, Imperial College of Science & Technology, Kensington, London, W. Dear Professor Finch, Many thanks for your kindness in running me over to… | ||
| img180 | Letter from Imperial College of Science and Technology regarding the taking of oscillograms. | ||
| View original record | IMPERIAL COLLEGE OF SCIENCE AND TECHNOLOGY. Crest Motto: SCIENTIA IMPERII DECUS ET TUTAMEN Further communications on this subject should be addressed to the undersigned, and Ref. No.… | ||
| img181 | Letter arranging to provide an exact date for a future meeting. | ||
| View original record | a months time + hope then to look you up I will let you know the exact date later. Yours sincerely JRupertuich | ||
| img182 | Letter from Ford Motor Company Ltd providing the address for the Mallory Electric Corporation. | ||
| View original record | Ford Motor Company, Ltd. DAGENHAM Essex. TELEPHONE: RAINHAM 300. TELEGRAMS: FORDMOTOR, TELEX, DAGENHAM CABLES: FORDMOTOR, DAGENHAM. PLEASE ADDRESS ALL COMMUNICATIONS TO THE COMPANY IN YOUR REPLY… | ||
| img183 | New design for an ignition coil to prevent secondary winding breakdowns. | ||
| View original record | r6017. E. From Hs/Wst. c. to By/Rd. c. to Wor. Hs/Wst.6/MA.19.10.33. NEW TYPE IGNITION COIL. Following our conversation regarding the above we are sending you herewith a rough sketch shewing… | ||
| img184 | Letter to Professor Finch at Imperial College regarding the testing of an ignition coil. | ||
| View original record | 86017 Hs/Wst.5/MA. 21st November, 1933. Proffessor Finch, Imperial College of Science & Technology, South Kensington, . LONDON, S.W.7. Dear Proffessor Finch, I sent to you on the 15th of October last… | ||
| img185 | Letter on Imperial College of Science and Technology letterhead regarding the testing of two coils. | ||
| View original record | IMPERIAL COLLEGE OF SCIENCE AND TECHNOLOGY. Further communications on this subject should be addressed to the undersigned, and Ref. No. ............................. quoted. SOUTH KENSINGTON, LONDON,… | ||
| img186 | Letter arranging for a Mr. Hives to visit Derby and travel to Ferrantis in Hollinwood for urgent work. | ||
| View original record | Monday on some urgent work. at Ferrantis, Hollinwood, and I suggest taking Hives with me, leaving him with you on Sunday afternoon in Derby + would pick him up again on returning on Monday (27th Nov)… | ||
| img187 | Letter fragment on Imperial College letterhead regarding electrical ignition problems. | ||
| View original record | IMPERIAL COLLEGE OF SCIENCE AND TECHNOLOGY. SOUTH KENSINGTON, LONDON, S.W. 7. Further communications on this subject should be addressed to the undersigned, and Ref. No........................ quoted.… | ||
| img188 | Arranging a Sunday time-table. | ||
| View original record | road + can thus make my. Sunday time-table suit your convenience yours sincerely Hyquinck | ||
| img189 | Letter to Professor Finch of Imperial College arranging a visit for Mr. Mole to conduct oscillographs on coils. | ||
| View original record | r6017 Hs/Wst.2/MA. 23rd. November, 1933. Professor Finch, Imperial College of Science and Technology, South Kensington, LONDON, S.W.7. Dear Professor Finch, Many thanks for your letter of the 22nd.… | ||
| img190 | Letter from Imperial College of Science and Technology arranging a meeting in Derby. | ||
| View original record | 86017 IMPERIAL COLLEGE OF SCIENCE AND TECHNOLOGY. Further communications on this subject should be addressed to the undersigned, and Ref. No. ........................ quoted. SOUTH KENSINGTON, LONDON,… | ||
| img191 | Arranging a meeting to discuss the results of a cathode-ray oscillographic investigation of ignition coils. | ||
| View original record | 10 a.m. Monday morning at the Clarendon Hotel? I propose to bring with me the complete results of our cathode-ray oscillographic investigation of your ignition coils and look forward to a useful… | ||
| img192 | Ignition coil failures, their cause, and proposed solutions for improved winding methods. | ||
| View original record | 2609 E. From Hs/Wst. c. to By. c. to Wor. Hs/Wst.3/MA.26.1.34. R.R. IGNITION COIL FAILURES. The failures which are now experienced, although now only few in number, are invariably due to breakdowns… | ||
| img193 | Modifications to an ignition coil to reduce self-capacitance and ionization issues. | ||
| View original record | -2- Hs/Wst.3/MA.26.1.34. Contd. In order to reduce the total self capacitance of the coil we should press for the outside primarycoil which we are still waiting to be instructed. The outside primary… | ||
| img194 | Revised production test for Ignition Coil D.72503. | ||
| View original record | 86017. By. From Hs/Wst. c. to Sft/Mr.Brock. Hs/Wst.2/MA.1.2.34. R.R. IGNITION COIL D.72503. We send you herewith revised production test for the above. Hs/Wst. | ||
| img195 | Production test specification for an ignition coil and ballast resistance. | ||
| View original record | SPECIFICATION NO. ELC.11. PRODUCTION TEST OF IGNITION COIL AND BALLAST RESISTANCE. (1) Continuity of primary and secondary circuits shall be tested by applying an A.C. voltage of 200 to the secondary,… | ||
| img196 | Test procedure for a coil, detailing voltage, duration, and performance criteria. | ||
| View original record | -2- (5) The coil shall be run normally but at 18 volts for 30 mins. and then immediately switched over to 8 volts when no missing shall occur on the 6.5 mm. spark gaps. | ||
| img197 | Production test and inspection procedure for a ballast resistance for an ignition coil. | ||
| View original record | -3- PRODUCTION TEST & INSPECTION OF BALLAST RESISTANCE FOR IGNITION COIL. (35 inches of 32 S.W.G. N1 Wire) A rig should be used with connecting pins, on which three ballast resistances can easily be… | ||
| img198 | Unsuitability of an 'OKONITE' sample for use on ignition coils due to risk of ionization damage. | ||
| View original record | By/RD. From Hs/Wst. 86017. Hs/Wst.2/MA.27.1.34. "OKONITE" We are arranging to test the sample sent along but we are afraid its use on the ignition coil is out of the question as it would rapidly crack… | ||
| img199 | Letter from Imperial College of Science and Technology arranging a meeting in Derby. | ||
| View original record | 86017 IMPERIAL COLLEGE OF SCIENCE AND TECHNOLOGY. (ROYAL COLLEGE OF SCIENCE.) WST SOUTH KENSINGTON, LONDON, S.W.7. 13th February, 1934. - Ives, Esq., Messrs Rolls-Royce, Ltd., DERBY. Dear Sir, I have… | ||
| img200 | The production of 6 'Spectre' Ignition Coils, detailing specific materials to be ordered for the primary winding. | ||
| View original record | RHC. [Strikethrough] c - Hs/Wst. WST 86017 BY/RD5/W.20.2.34. "SPECTRE". IGNITION COIL,SEC.8140. Will you please put in hand 6 Ignition Coils in accordance with L.O.P. D.74200,also :- D.74198 - Section… | ||
| img201 | Investigation into a customer complaint of fumes from a voltage regulator coil on a Bentley chassis and proposed solutions. | ||
| View original record | X6017 By.From Hs/Wst. c. to Hd. c. to JLE. c. to EP. c. to ERX. c. to Bft/Mr.Brock. Hs/Wst.1/MA. 21.2.34. BENTLEY CHASSIS No. B.65.AE - Mr. RICHARD SUMMERS. This customer complained of fumes in the… | ||
| img202 | Dispatch of a dynamo voltage regulator resistance coil for testing purposes. | ||
| View original record | Roy. From Hs/Wst. c. to C/MT. c. to D/BP. 86017. Hs/Wst.3/MA.5.5.34. Will you please despatch to Mr. Richard Summers, Denna Hall, Burton Point, Chester, one dynamo voltage regulator resistance coil… | ||
| img203 | Specifying the material for new ignition coil cores to be .012' thick 'Stalloy' sheet. | ||
| View original record | 66017. By/RD. From Hs/Wst. Hs/Wst.9/MA.17.5.34. Will you please arrange for the iron cores in the new ignition coils you are now scheming out to be of "Stalloy" sheet .012" thick. Hs/Wst. | ||
| img204 | Design, positioning, and standardization of spare Bentley Coils. | ||
| View original record | Hs To EY from SG. re Bentley Coils. Sg7/E31.5.34 Copy to Wor. & Hs. Cice I note from BY.5/G.15.5.34 that nothing has really been done about the milled nuts for the securing the spare coil in position,… | ||
| img205 | Request to arrange the fitting of a spare ignition coil on a Bentley Chassis. | ||
| View original record | L6017 Hs/Wst. S/KW.1.6.34. RHC. Arrangement of Spare Coil on Bentley Chassis. Will you please arrange to fit to 4-B-IV whilst it is in the shop, the arrangement for fitting the spare ignition coil, as… | ||
| img206 | Alternative design scheme for Bentley ignition coils and their associated switching. | ||
| View original record | s6017 WST What exactly is this scheme Rm W/S. To Sg. from E. E.2/HP.4.6.34. c.c. Wor. Hs. By. CX. Bentley Coils. ------------- Referring to Sg.7/E.31.5.34. we were never satisfied with the milled nut… | ||
| img207 | Instruction memo to fit a new twin coil scheme and radio suppressors to chassis 3.B.IV. | ||
| View original record | A6017 RHC. From Hs/Wst. Hs/Wst.7/MA.26.6.34. CHASSIS 3.B.IV. Will you please arrange to fit the new twin coil scheme to this chassis, and arrange for sparking plug radio suppressors to be fitted to… | ||
| img208 | Requesting an update on the readiness of the double ignition coil scheme for Bentley production. | ||
| View original record | WST 26017 To RHC. from E. E.3/HP.22.6.34. c. HS. By Double Ignition Coil Scheme on Bentley. We are very anxious to get the above scheme rigged up, with a view to early standardization on production,… | ||
| img209 | Requesting the production of six more 'Spectre' type ignition coils. | ||
| View original record | RHC. From Hs/Wst. 86017 Hs/Wst.4/MA.27.7.34. Will you please put in hand six more "Spectre" type ignition coils. Hs/Wst. | ||
| img210 | Standardisation of two ignition coils with knurled nut terminals mounted on the wheelcase. | ||
| View original record | RR 785BN (5H) (57312. 29-12-33) BM. 3/640/2 COMPLETED 20.9.34. BENTLEY STANDARDISATION of PARTS. Date 21-8-34 Date 24.7.34. X No. 6017. Drawing No. Part List Description of Parts. TWO IGNITION COILS… | ||
| img211 | Cost and scrap analysis for the standardisation of Bentley parts. | ||
| View original record | BENTLEY STANDARDISATION OF PARTS. TWO IGNITION COILS. COST X Est. cost of extra jigs, tools and equipment (Sft/Ws.27.7.34) £18.0.0. Sft/Ch.27.7.34. £12 scrap if introduced at 150th chassis in 'B'… | ||
| img212 | Temporary modification to the 'Spectre' Ignition Coils for improved cooling. | ||
| View original record | c. HS/Wst. 86017 BY/RD2/W.6.10.34. "Spectre". Ignition Coils. In order to lift the Ignition Coils so that they may receive more cooling, would you please put in hand the following special parts :-… | ||
| img213 | Testing a new grade of ignition coil insulating paper as a replacement for an out-of-stock grade. | ||
| View original record | 6017 By. From Hs/Wst. c. to Roy. Hs/Wst.8/MA.28.12.34. IGNITION COIL INSULATING PAPER. We have had submitted to us for test by the Order Office samples of a different grade of insulating paper… | ||
| img214 | Request to supply three Spectre ignition coils to drawing D.74200. | ||
| View original record | r 6017. RHC. From Hs/Wst. Hs/Wst.2/MA.17.1.35. Will you please arrange to supply us with three Spectre ignition coils to drg. D.74200. Hs/Wst. | ||
| img215 | Mounting of ignition coils for the Spectre engine, detailing a new crankcase design. | ||
| View original record | RHC. From Hs/Wst. 6017 Hs/Wst.6/MA.17.1.35. MOUNTING OF SPECTRE IGNITION COILS. A modified crankcase is being designed for the Spectre which will include a new face for mounting a modified coil… | ||
| img216 | Request to rewind the primary winding of an ignition coil for testing purposes. | ||
| View original record | 86017. RHC. From Hs/Wst. Hs/Wst.9/MA.25.2.35. IGNITION COIL TO R.R.SCH.684. Will you please arrange to rewind the primary winding on the above coil, which we are testing, with 452 turns of standard 22… | ||
| img217 | Inquiring about the modification to the position of the Spectre ignition coils. | ||
| View original record | r6017. E/JNR. From Hs/Wst. c. to By. Hs/Wst.4/MA.2.3.35. SPECTRE COIL POSITION. We have not yet seen any modification instructed for placing the Spectre ignition coils in a cooler position, i.e. about… | ||
| img218 | Instruction to mount ignition coils on Spectre engines on raised distance pieces for extra cooling. | ||
| View original record | RHC. From Hs/Wst. 86017. Hs/Wst.4/MA.4.3.35. SPECTRE COIL POSITION. Will you please arrange for the ignition coils on all the Spectre engines to be mounted on the raised distance pieces, as was done… | ||
| img219 | Secret memo regarding the decision to continue with a raised coil position on the Spectre project, pending a crankcase alteration. | ||
| View original record | SECRET. 16017. Hs/Wst. from E/JNR. E/JNR.1/HP.4.3.35. ------------------------------------------------- re Spectre Coil Position. ------------------------------------------------- This job has been… | ||
| img220 | Experimental Stalloy core to improve the high-speed performance of the Spectre ignition coil D.74200. | ||
| View original record | By. From Hs/Wst. 16017 Hs/Wst.4/MA.8.3.35. SPECTRE IGNITION COIL D.74200. We consider that the high speed performance of this coil could be improved if an iron core of Stalloy plates was substituted… | ||
| img221 | Feasibility of replacing a Swedish iron wire core with a Stalloy plate core for a 'Spectre' ignition coil. | ||
| View original record | Hs/Wst. WST vLoo17. BY/RD1/W.28.3.35. "SPECTRE" IGNITION COIL,D.74200. With reference to your request Hs/Wst4/MA.8.3.35, for a Stalloy plate core for the above coil,we have looked into this matter and… | ||
| img222 | Clarifying that improvements to the Spectre Ignition Coil B.74200 are expected from a change of material. | ||
| View original record | By. From Hs/Wst. ✓6017. Hs/Wst.3/MA.29.3.35. SPECTRE IGNITION COIL B.74200. Referring to your By/RD.-/W.28.3.35., we are not expecting you to carry out any turning over of the end of the coil and we… | ||
| img224 | Request to rewind an ignition coil's primary winding with specific wire and turn parameters. | ||
| View original record | (601) RHC. From Hs/Wst. Hs/Wst.6/MA.29.3.35. IGNITION COIL TO R.R.Sch.684. Will you please have the primary winding on this coil rewound for us with 375 turns of 21 S.W.G. D.C.C. Superfine wire.… | ||
| img225 | Requesting the changeover of ignition coils on Spectre 2 and 3 to test new 'Seekay' wax. | ||
| View original record | RHC. From Hs/Wst. Hs/Wst.5/MA.4.5.35. "SEEKAY" WAX FILLED IGNITION COILS. Will you please arrange for the ignition coils on Spectre 2 and 3 to be hanged over for coils which we will supply filled with… | ||
| img226 | Testing a new high melting point impregnating wax, 'Seekay', for ignition coils. | ||
| View original record | By. From Hs/Wst. c. to E. c. to Wor. 46017 Hs/Wst.3/MA.4.5.35. IGNITION COILS. Our attention has been drawn to an impregnating wax made by Imperial Chemical Industries called "Seekay" which has a very… | ||
| img227 | Use of 'Seekay' wax for ignition coils and coordinating with Imperial Chemical Industries. | ||
| View original record | WST Hs/Wst. 6017 BY.16/J.7.5.35. IGNITION COILS. With reference to your memo Hs/Wst.3/MA.4.5.35, in regard to the possible use of "Seekay" wax for the above purpose, we are interested to note the… | ||
| img228 | Raising the coils on the experimental Spectre chassis for extra cooling and accessibility. | ||
| View original record | E. From Hs/Wst. Hs/Wst.3/MA.13.6.35. Re. SPECTRE COILS. The height we raised the coils on the experimental Spectre chassis to provide extra cooling and accessibility was 2½". Hs/Wst. | ||
| img229 | Specification and parts list for the 'Spectre' Ignition Coil, Section 8140. | ||
| View original record | RHC C.B. c. Hs/Wst. WST 46017 BY/RD2/W.1.7.35. "Spectre" Ignition Coil, Section 8140. R.R.Scheme 87C. The experimental ignition coils which have been made on "Spectre" have had their primaries wound… | ||
| img230 | Letter from Delco-Remy & Hyatt Ltd. regarding controller coils, with a handwritten reply explaining a delay in testing. | ||
| View original record | 6017 DELCO-REMY & HYATT LTD. Head Office & Works: 111, GROSVENOR ROAD, LONDON, S.W.1. Telegrams: DELREMYHAT, CHURTON, LONDON. Telephones: VICTORIA 6242 (7 LINES) [Stamp: THE SOCIETY OF MOTOR… | ||
| img231 | Letter to Delco-Remy & Hyatt, Ltd. regarding a delay in testing Delco Ignition-Controller Coils. | ||
| View original record | 46017 Hs/Wst.6/MA. 19th July, 1935. Messrs.Delco-Remy & Hyatt,Ltd., 111, Grosvenor Road, London, S.W.1. Delco Ignition - Controller Coils. Dear Sirs, Many thanks for your letter of the 16th instant… | ||
| img232 | Letter from Delco-Remy & Hyatt Ltd. regarding a test on Delco Ignition Controller Coils. | ||
| View original record | DELCO-REMY & HYATT LTD. Head Office & Works 111, GROSVENOR ROAD, LONDON, S.W.1. Telegrams: DELRENHYAT, CHURTON, LONDON. Telephones: VICTORIA 6242 (7 LINES) THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS… | ||
| img233 | Instruction memo regarding the filling of Spectre coils with 'Seekay' wax at a specific temperature. | ||
| View original record | 46017. By. From Hs/Wst. c. to Sft/Mr.Brock. Hs/Wst.2/MA.12.8.35. SPECTRE COILS. Will you please arrange for all the new Spectre coils to be filled with "Seekay" wax grade R.123. The coils should be… | ||
| img234 | Request for a further ignition coil with altered primary and secondary winding specifications. | ||
| View original record | To RHC. 86017 Hs/Wst.15/KW.16.8.35. Ignition Coil to D.74451. Will you please have a further coil produced for us with the winding altered as follows :- (1) Primary Winding. 385 turns of 20 SWG.… | ||
| img235 | Letter from Imperial Chemical Industries enclosing a specification for Seekay Wax Grade R.93c. | ||
| View original record | 4607. IMPERIAL CHEMICAL INDUSTRIES LIMITED. NORTH WESTERN DIVISION. TELEGRAMS: IMPKEMIX, LEICESTER. TELEPHONE: CENTRAL 60294. SELLING AGENTS FOR I.C.I.(ALKALI)LIMITED, (FORMERLY BRUNNER,MOND &… | ||
| img236 | Suggested specification for the electrical properties of Seekay Wax R.93 C, provided by Imperial Chemical Industries Limited. | ||
| View original record | IMPERIAL CHEMICAL INDUSTRIES LIMITED. General Chemical Group. SEEKAY WAX R.93 C. Suggested Specification for Electrical Properties. (1) PERMITTIVITY. Conditions of Test. Specimen to be prepared by… | ||
| img237 | The conditions of test and values for Power Factor and Volume Resistivity. | ||
| View original record | (2) POWER FACTOR. Conditions of Test. Measurement to be made on same specimen as for permittivity. Measurement at 50 cycles/second under a voltage gradient of not more than 50 volts/mm. Value At 25°C… | ||
| img238 | Internal request to order 28 ignition coil type suppressors from Erie Resistor Co. | ||
| View original record | 86017. Roy. From Hs/Wst. Hs/Wst.2/MA.9.9.35. Please order for us from the Erie Resistor Co. Ltd., Cricklewood - 28 ignition coil type suppressors. 10,000 ohms each resistance. Order No. 54317. Hs/Wst. | ||
| img239 | Mr. Brock's objections to hand-filling ignition coils with Seekay wax and agreeing to vacuum impregnation instead. | ||
| View original record | 6017 By. From Hs/Wst. c. to Sft/Mr.Brock. Hs/Wst.7/MA.20.9.35. Re. SEEKAY WAX FOR IGNITION COILS. Mr.Brock has raised serious reasonable objections to the filling of ignition coils by hand with high… | ||
| img240 | Filling ignition coils with I.C.I. 'Seekay' wax. | ||
| View original record | 46017. EXPERIMENTAL DEPARTMENT REPORT. REFERENCE :- Hs/Wst.4/MA.23.9.35. Subject of Report:- Filling of ignition coils with I.C.I. "Seekay" wax. General Conclusions :- Very satisfactory. Life of coils… | ||
| img241 | Technical report on the testing of I.C.I. 'Seekay' wax for filling ignition coils to improve reliability. | ||
| View original record | Hs/Wst.4/MA.23.9.35. FILLING OF IGNITION COILS WITH I.C.I. "SEEKAY" WAX. For some considerable time we have been on the look out for a suitable high melting point wax filling for our ignition coils… | ||
| img242 | Instruction to impregnate all ignition coils in vacuo using Seekay Wax. | ||
| View original record | WST Y6017? BY/RD. c. Spt/Mr. Brock. c. Hs/Wst. c. Roy. BY/2/G. 24.9.35. IGNITION COILS. ------------- As the result of further work on coils "impregnated" with Seekay Wax the Experimental Department… | ||
| img243 | Internal order request for various insulating tubes and insulators for an aero ignition coil. | ||
| View original record | r6017. Roy. From Hs/Wst. Hs/Wst.6/MA.4.12.35. AERO IGNITION COIL. Please order for us to order No.54101 - 6 insulating tubes D.74433 6 insulatingtubes D.74434 6 insulating tubes D.74435 6 insulating… | ||
| img244 | Request for performance curves for the Williams Patent Super Coils from The Super Coil Co. | ||
| View original record | 86017. Hs/Wst.14/JH. 5th May, 1936. The Super Coil Co., 1 & 33, Queens Terrace Mews, London, S.W.7. Dear Sirs, Will you please send us performance curves of the Williams Patent Super Coils as… | ||
| img245 | The purchase of two 12-volt ignition coils from S.J. Williams & Co. | ||
| View original record | To Roy. 86017 HS/Wst.10/JH. 7.5.36. Will you please order for us from S.J. Williams & Co. 1-33, Queens Terrace Mews, London, S.W.7. 2, 12 volt ignition coils as referred to in their advertisements.… | ||
| img246 | Modifications to a governor for 'Hall's Unit' (B-21) to achieve the ideal advance line for a trial. | ||
| View original record | Hs/Swdl. to Hs/Wst. 6017 Hs/Swdl.13/KW.13.5.36. B-21 - Hall's Unit. Will you please arrange that the governor for the above unit to be made to suit the ideal advance line as carried out on a governor… | ||
| img247 | Internal request to place an order for 12-volt B.T.H. and Rotax aero booster coils. | ||
| View original record | (6017) To Roy. Hs/Wst.9/JH. 3.7.36. Will you please order for us to Order No. 55241 - 1 [struck through] - 12 volt B.T.H. aero booster coils. 1 - 12 " Rotax " " " type N.876 Hs/Wst. [Handwritten… | ||
| img248 | Composition and harmful effects of Seekay Wax for ignition coils and evaluating Halowax as an alternative. | ||
| View original record | Hs/Wst. BY/RD. Hl. Sft/Mr. Brook. Ell. [Handwritten] 86017 BY.9/G.4.8.36. [Handwritten] WST SEEKAY WAX - IGNITION COILS. ------------------------- We have now received information in regard to the… | ||
| img249 | Enquiry into the composition of Halowax for coil ignition. | ||
| View original record | Hs/Wst. 86017 BY.4/G.12.8.36. COIL IGNITION. I have made enquiries as to the composition of Halowax marketed by the Bakelite Co., and found that this again is a chlorinated wax somewhat similar in… | ||
| img250 | Replacing Seekay wax with Halowax for insulating ignition coils due to operator health concerns and material incompatibility. | ||
| View original record | ROY. c. Dr/ED c. Hs/Wst r6017 WSP BY.10/G.4.S.36. IGNITION COILS - INSULATING WAX. ------------------------------- As a result of a number of enquiries we have been pursueing, in regard to Seekay wax,… | ||
| img251 | Requesting modifications to an ignition coil for use with increased plug gaps. | ||
| View original record | By/RD. From Hs/Wst. 86017 Hs/Wst.12/MA.12.8.36. IGNITION COIL FOR USE WITH INCREASED PLUG GAPS. We are anxious to persevere with the outside primary coil on chassis particularly in connection with… | ||
| img252 | Unsatisfactory Watford 12-volt booster coil, type NIKA, supplied by Messrs. Rotax Ltd. | ||
| View original record | Roy. From Hs/Wst. c. to G/MT. 86017. Hs/Wst.3/MJ.31.8.36. We are sending into the Stores a Watford 12 volt booster coil type NIKA which was recently supplied to us by Messrs. Rotax Ltd. This coil has… | ||
| img253 | Request to examine a failed coil from a Bentley car by dismantling it. | ||
| View original record | Rm. 86017 BY. 5/G.22.10.36. WST Have you seen this coil? Rm Referring to the coil which failed on — the Bentley car referred to in Hs/GWH/IMW/I/JAB.10.10.36 would you kindly let me have the coil so… | ||
| img254 | Request to manufacture a modified Phantom III ignition coil with 15000 turns on the secondary winding. | ||
| View original record | To RHC: (601) Rst.7/JH. 23.10.36. Will you please have made for us as soon as possible a standard Phantom III ignition coil modified by winding only 15000 turns on the secondry winding. Hst. | ||
| img255 | The examination of a faulty ignition coil, which found the cause to be a fractured wire connection. | ||
| View original record | <601> To By. Rm/Wst.13/JH.26.10.36. Re Ignition Coil off 6-B-IV. In reply to your By.5/G.22.10.36. we have already examined the faulty coil off 6-B-IV and find that the fault was not due to breakdown… | ||
| img256 | Request to produce two ignition coils with reversed polarity for the Phantom III. | ||
| View original record | 6017. To [text struck through] c. [text struck through] c. Rm/Wst. BY/RD.3/B.5.11.36. "Phantom III" : Ignition Coil. Reversed Polarity. Will you please put in hand two ignition coils to L.O.P.… | ||
| img257 | Letter from Delco-Remy & Hyatt Ltd. regarding the supply of sample distributors and 12-volt ignition coils. | ||
| View original record | DELCO-REMY & HYATT LTD. Telegrams: DELREMYHAT, SOWEST, LONDON. Head Office & Works: 111, GROSVENOR ROAD, LONDON, S.W.1. Telephones: VICTORIA 6242 (7 LINES) [Logo: THE SOCIETY OF MOTOR MANUFACTURERS &… | ||
| img258 | Arranging the despatch of an R.R. Ignition Coil to Delco-Remy & Hyatt Ltd for examination. | ||
| View original record | To D/BP. from Rm/Wst. c. G/Mt. floor) Rm/Wst.20/AP.13.11.36 Will you please arrange to despatch to Messrs Delco- Remy & Hyatt Ltd., 111 Grosvenor Road, LONDON S.W.1. addressed for the attention of… | ||
| img259 | Letter to Delco-Remy & Hyatt Ltd. requesting to hold the supply of ignition coils and sample distributors. | ||
| View original record | Rm/Wst.8/JH. 6017 6th November, 1936. Messrs. Delco-Remy & Hyatt Ltd., 111, Grosvenor Road, London.S.W.1. For the attention of Mr. W.O.Kennington. Dear Sirs, With reference to your letter of the 4th… | ||
| img260 | Letter from Bakelite Limited following up on a sample of 'HALOWAX' W.1004 sent for ignition coil impregnation experiments. | ||
| View original record | NEW TELEPHONE NO. VICTORIA 5511 (5 LINES) TELEGRAPHIC ADDRESS: BAKELITE, SOWEST, LONDON. TELEPHONE: VICTORIA 5441 | 1225 (4 LINES) WORKS: BIRMINGHAM PLEASE ADDRESS ALL COMMUNICATIONS TO THE COMPANY,… | ||
| img261 | Experimental department report on improvements to ignition coils. | ||
| View original record | EXPERIMENTAL DEPARTMENT REPORT. REFERENCE :- Rm/Wst.10/AP.7.12.36. Subject of Report :- Improvements to R.R. ignition coils. General Conclusion :- Satisfactory. Copies of Report Circulated to:- Hs. E.… | ||
| img262 | Two experimental modifications to improve standard ignition coils. | ||
| View original record | Rm/Wst.10/AP.7.12.36. IMPROVEMENTS TO R.R. STANDARD IGNITION COILS. We have recently carried out two Experimental modifications on our ignition coils which have proved to be of considerable value. The… | ||
| img263 | Graph showing test results for the effect of short circuit secondary turns on a coil under different loads. | ||
| View original record | TESTS SHEWING THE EFFECT OF SHORT CCT SECONDARY TURNS TEST TAKEN WITH STD COIL & BALLAST STD. DISTRIBUTOR .55 MAKE RATIO 12 VOLTS SUPPLY H.T. OUTPUT TAKEN FROM DISTRIBUTOR (A) COIL D.72503 WITHOUT… | ||
| img264 | Graph comparing the performance of a modified ignition coil against the original under different loads. | ||
| View original record | TEST SHOWING RESULTS OF MODIFICATION TO COIL D/15260. MODIFICATION-SECONDARY WOUND WITH 15000 TURNS OF 42 S.W.G. ENAM. ALSO EMBODYING THE NON-SOLDER METHOD OF START & FINISH OF THE WINDING. (A)… | ||
| img265 | Letter to Bakelite Ltd. regarding the unsuitability of 'Halowax' for ignition coil impregnation due to its high inductivity. | ||
| View original record | 86017 Experimental Department 9th December 1936. Rm/Wst.14/AP. Bakelite Ltd., 68 Victoria Street, LONDON S.W.1. Dear Sirs, Referring to your letter of the 17th ultimo., reference GAJ/AS., we beg to… | ||
| img266 | The fitting of a special Delco Remy coil to two chassis for testing purposes. | ||
| View original record | 6017 To HPS. from Rm/Wst. c. to Rm/FD. Rm/Wst.13/AP.21.1.37. Will you please arrange to fit to chassis 3.B.lV. and 5.B.lV. one Delco Remy coil with special finish, which have been supplied to us by… | ||
| img267 | Request for the design and manufacture of two adaptor brackets for fitting Delco Remy coils to specific chassis. | ||
| View original record | To HPS. from Rm/Wst. 601 M Rm/Wst.2/AP.27.1.37. In connection with the fitting of Delco Remy coils to chassis 3.B.1V. and 5.B.1V., a small adaptor bracket will be required, and we should be glad if… | ||
| img268 | Request to rewind a special Wraith ignition coil with new specifications. | ||
| View original record | 6017 SECRET. HPS. from Rm/Wst. Rm/Wst.17/M.2.237. Wraith Ignition Coil. Will you please arrange to rewind one of the special coils to D.75672 produced for us some time ago, by winding 15,000 turns of… | ||
| img269 | The fitting of ignition coils to new Wraith chassis. | ||
| View original record | 6017 To HPS. Rm/Wst.9/JH.2.3.37. WRAITH IGNITION COILS. Please arrange for all new Wraith chassis to be fitted with ignition coils to D.75678. There are four of these coils already made which can be… | ||
| img270 | Request to re-wind two ignition coils with a modified specification for the secondary winding. | ||
| View original record | 6017 HPS. from Rm/Wst. c. Wst/RS. Rm/Wst.12/AP.25.3.37. Will you please arrange to re-wind for us two ignition coils to drawing D.75672 with the exception that the secondary winding should consist of… | ||
| img271 | On the Wraith Ignition Coil, proposing to standardise it by using aero coil windings for chassis work. | ||
| View original record | SECRET 6017 To E. from Rm/Wst. c. to By/RD. Rm/Wst.9/AP.5.4.37 Wraith Ignition Coil. We have found that the characteristics of the aero coil to DC.277 are better than those of the windings to D.75672.… | ||
| img272 | Recommending a new combined ignition coil and distributor for the Phantom III chassis. | ||
| View original record | 6017 E. from Rm/Wst. c. Hs. c. Da. c. By. c. RHC. Rm/Wst.1/AP.6.4.37 PHANTOM III. IGNITION COIL AND DISTRIBUTOR. The intensive development recently carried out on ignition coils for our new aero… | ||
| img273 | Improved and cheaper secondary winding for D.75672 coils, requesting a new drawing. | ||
| View original record | 6017. By/RD. from Rm/Wst. Rm/Wst.1/AP.10.4.37 D.75672 COILS. We have found that the performance of these coils is improved slightly when a secondary winding consisting of 15000 turns of 42 SWG. wire… | ||
| img274 | Instruction to mould six coil cases as per drawing D.75672. | ||
| View original record | To HPS. 6017 Wst/RC.12/JH.7.4.37. Will you please instruct for six coil cases to be moulded as per drawing D.75672. 7444 G Wst/RC. | ||
| img275 | The estimated costs for manufacturing coil part number D.75673. | ||
| View original record | 6017 ESTIMATED COSTS OF COIL TO D.75673. Winding 1.836 material .982 labour. Insulator D.74448 - .250 material. Coil case D.74449 - 1/- each. Coil insulator D.74450 - 1/3 each. Total cost = 4/4 + 1/9.… | ||
| img276 | Requesting failed ignition components for examination in the Electrical Laboratory. | ||
| View original record | 6017 SB To Hd. from Rm/Wst. Rm/Wst.2/AP.3.5.37 With reference to the Quarterly Complaints List issued under cover of your Hd.8/HR.23.4.37, will you please arrange to let us have the ignition pieces… | ||
| img277 | On ignition coil primary connections, requesting an alteration to the coil top plate based on recent tests on a Phantom III chassis. | ||
| View original record | 6013 By. from Rm/Wst. c. Da. Rm/Wst.16/AP.3.5.37 IGNITION COIL PRIMARY CONNECTIONS. We have recently carried out further tests on a P.III. chassis with the L.T. primary connections on the top of the… | ||
| img278 | Arranging to send two new type ignition coils, part D.75673. | ||
| View original record | 6017 To Cx. Rm/Wst.16/JH.6.5.37. We are arranging to send you two new type ignition coils D.75673 as per your note to Rm. ref. Cx.6/KW.3.7.37. Rm/Wst. | ||
| img279 | Request to arrange sending two ignition coils, part D.75673, to the Sales department. | ||
| View original record | To HPS/CEP. 6017. Rm/Wst.17/JH.6.5.37. Will you please arrange to send to Cx. (Sales) two ignition coils D.75673 which we are handing to you herewith. Rm/Wst. | ||
| img280 | Modifications required for coil D.75672 following experimental testing. | ||
| View original record | 6017 By/RD. from Rm/Wst. c. B. Rm/Wst.6/AP.11.5.37 COIL TO D.75672 As a result of experimental testing we have found the following modifications necessary:- (a) Flexible wire connections to all… | ||
| img281 | Blueprints for the windings of the Wraith III ignition coil. | ||
| View original record | To H.P.B. c. Rm/Wst. RS. 6013. BY/RD.6/B.26.5.37. Ignition Coil - Wraith III. Please receive herewith blueprints of DW.290, giving particulars of the windings required on the ignition coil D.75673.… | ||
| img282 | Potential alteration to the Phantom III Ignition Coil and its production implications. | ||
| View original record | 6013 SHEET WST See me Rm BY/Cgh.JTW.26.5.37. Rm. C. De. Phantom III - Ignition Coil. With reference to Rm/Wst16/AF.3.5.37, it is not clear whether you wish the alteration to be instructed… | ||
| img283 | Request to perform ignition coil performance tests on four different coils to find the best performing one. | ||
| View original record | To Rm/FD. 6017 Rm/Wst.1/JH.27.5.37. Ignition Coil Performance tests. Will you please arrange to carry out for us ignition coil performance tests on either a 25/30 or a Bentley chassis, in order to… | ||
| img284 | Desired modifications for the Wraith Ignition coil. | ||
| View original record | 6017. To By/RD. Rm/Wst.8/JH.27.5.37. Re Wraith Ignition coil to D.75673. In view of the benefits derived on exptl. test with the modifications below, we should like them included on the LOP. without… | ||
| img285 | Diagnosing a misfire in a Phantom III by swapping coils, noting variations in standard coil output. | ||
| View original record | Wst. FILE 6017. 2.6.37 PHANTOM III. COILS. 33-EX. After following the routine jobs in trying to cure a misfire (pick up and slow running B. distributor) we changed the coils over to see if the trouble… | ||
| img286 | Slow running, performance, acceleration, and hill climb tests for a GAE-20 30 HP engine. | ||
| View original record | COPY. RM/RC 6013 To Rm. c. Rm/Swdl. Rm/GR.5/JH.1.6.37. GAE-20 30 H.P. Slow running tests. Standard distributor head and rotor fitted. Contacts checked O.K. at .018" gap. Timing checked and reset at… | ||
| img287 | Test report on tappet clearances, ignition coils, and carburetor systems to improve engine slow running performance. | ||
| View original record | COPY. -2- Tests were carried out to obtain the best slow running with minimum tappet clearances; reducing exhaust duration rather than the inlet. The best result was inlet at .010 and exhaust at… | ||
| img288 | Summary of engine tests noting temperature rise after idling and a list of four modifications made. | ||
| View original record | COPY. -3- Rm/GR.5/JH.1.6.37. Temperature rises from normal running at 48°C. to maximum of 65°C. after idling for 15 mins. Summary of tests. 1. New ignition governor set at T.D.C.,F.A. 2. Reduction in… | ||
| img289 | Standardisation of an ignition coil with reversed primary connections for the Phantom III to improve misfiring. | ||
| View original record | RR 755 (roH) 38137 7.4.37 WHK 26070 COMPLETED 21.8.37. PHANTOM III STANDARDISATION of PARTS. Date 2.6.37. X No 6013. Drawing No. Part List Description of Parts: IGNITION COIL WITH REVERSED PRIMARY… | ||
| img290 | Value of coils obtained from a Mr. Williams in relation to a patent specification. | ||
| View original record | 6017. To By. Rm/Wst.16/JH.3.6.37. Referring to the attached patent specification and letter from Mr. Williams we obtained one of these coils some time ago and would say that there is nothing of any… | ||
| img291 | Proposal to reverse the primary winding direction on ignition coils for 25/30 HP and Bentley Chassis. | ||
| View original record | 6017. To Rm/Wst. BY/RD.3/B.9.6.37. IGNITION COIL WITH REVERSED PRIMARY CONNECTIONS. Instead of altering the top plate, as suggested, of the coils, we propose to reverse the direction of the primary… | ||
| img292 | Approving a modified ignition coil with reversed primary connections for replacement purposes. | ||
| View original record | 6017 To By/RD. from Rm/Wst. Rm/Wst.5/AP.11.6.37 IGNITION COIL WITH REVERSED PRIMARY CONNECTIONS. Replying to your By/RD.3/B.9.6.37, this new coil is quite O.K. for replacement purposes. The modified… | ||
| img293 | Instructing replacement of a high tension coil and a ballast resistance on a car. | ||
| View original record | To HPS. c. to Rm/Wst, Handwritten: WSS - 6110 (crossed out) 6017. Rm/Swdl.14/JH.15.6.37. For your records and to instruct replacement we have had a high tension coil D.75672 and a ballast resistance… | ||
| img294 | Standardisation of an ignition coil with a reversed primary to reduce plug voltage. | ||
| View original record | RR 755A (5H) 22635 9/9/36 J.W.S. COMPLETED 23.8.37. 25/30 H.P. STANDARDISATION OF PARTS Date: 17.6.37. X No. D13. Drawing No. Part List Description of Parts: IGNITION COIL WITH REVERSED PRIMARY… | ||
| img295 | Standardisation of an ignition coil with reversed primary connections to reduce plug voltage. | ||
| View original record | RR 755B (10H) 88620 12-8-35 W.H.K. 21800 COMPLETED 23.8.37. BENTLEY STANDARDISATION OF PARTS. Date 17.6.37 Drawing No. X No. 6013. Description of Parts: IGNITION COIL WITH REVERSED PRIMARY… | ||
| img297 | The standardization of parts for the 'L' Series chassis, with no extra tool cost. | ||
| View original record | COMMITTEE C.D.C.-104 BENTLEY STANDARDISATION OF PARTS WITH MINIMUM REVISION DATE 12.8.31 Colours X Extra Tool Cost Nil. Could be brought on to production at the 1st. Chassis in "L" Series (without… | ||
| img298 | The replacement of R.R. type ignition coils with Lucas coils for chassis 32-EX. | ||
| View original record | 6017. To HPS. c. to Wst/RS. Wst/RC.4/JH.2.7.37. re Coils fitted to 32-EX. Will you please arrange for the R.R. type ignition coils fitted to the above chassis to be replaced by Lucas coils which will… | ||
| img299 | Two D.75673 ignition coils to be fitted to trial cars for testing. | ||
| View original record | To [stamped over text] from HPS/WSC. OG/RG. Rm/Wst. 6017 HPS/WSC.17/BA.6.7.37. We hand you herewith:- 2 - D.75673 Ignition Coils. Will you please arrange to despatch same to Cx (Sales Dept) who is… | ||
| img300 | Letter to Lucas Ltd. requesting the urgent supply of two R.R.12 ignition coils for a car going to France. | ||
| View original record | 6017 Wst/RC.14/JH. 8th July, 1937. Messrs. Lucas Ltd., Great King Street, BIRMINGHAM. For the attention of Mr.Toulmin. Dear Sirs, Will you please supply us with two more R.R.12 ignition coils. We are… | ||
| img301 | Internal request for the manufacture of 12 ignition coil cases and 12 coil terminal heads for despatch to Joseph Lucas Ltd. | ||
| View original record | To HPS. from Rm/Wst. Will you please have made for us 12 ignition coil cases D.74449 and 12 coil terminal heads D.74450. When these mouldings are complete, will you please make arrangements to… | ||
| img302 | Ignition coil performance tests and a recommendation for future coil winding specifications. | ||
| View original record | To Rm. c. to By/RD. c. to Rm/FD. 6017 Rm/RC.4/JH.25.8.37. Re Coil performance tests carried out on 25-G-V1. Recently road tests were carried out in which the performance of the R.R.D.75672A Ignition… | ||
| img303 | Misfiring issue with ignition coils on a Wraith model, potentially due to induced sparking. | ||
| View original record | 6017. EY.8/G.16.9.37. BY/RD. c. Rm. c. Rmy gryer. R.E. What was cause of fault GRT WRAITH - IGNITION COILS. When Mx. was trying 32-EX. in London under traffic conditions, he reports :- "Pronounced… | ||
| img304 | Road testing faulty Lucas type coils from car 32-EX, with further tests planned. | ||
| View original record | To By. from Rm/RC. c. By/RD. c. Rm. c. Ex. 6017. Rm/RC.1/MH.22.9.37. RE LUCAS TYPE COILS OFF 32-EX. These coils have been subjected to a road test on a Bentley and were reported to be definitely… | ||
| img305 | Investigation into misfiring on the Wraith experimental chassis, comparing three types of ignition coils. | ||
| View original record | 6017 By. from Rm/RC. c. Rm. c. By/RD. Rm/RC.9/AP.1.10.37. RE IGNITION COILS. Trouble has been experienced lately on the Wraith experimental chassis, due to misfiring on 'pick-up'. This was… | ||
| img306 | Note on testing the polarity of experimental and standard production coils. | ||
| View original record | -2- Rm/RC.9/AP.1.10.37. The R.R. coil was made before the alteration was instructed. All experimental coils will be tested for polarity and marked accordingly, as soon as possible. We have tested a… | ||
| img307 | Inquiry to Ferranti Ltd. regarding apparatus for measuring the high tension voltages of ignition coils. | ||
| View original record | 0017. Rm/RC.6/MH. Messrs. Ferranti Ltd., Hollinwood, Lancs. 2nd. October 1933 Dear Sirs, We are interested in up-to-date apparatus for measuring the high tension voltages of ignition coils. We should… | ||
| img308 | Letter from Ferranti Ltd. declining to quote for an instrument to test ignition coils. | ||
| View original record | 6017 ALL COMMUNICATIONS SHOULD BE ADDRESSED TO THE COMPANY FERRANTI LTD ELECTRICAL & GENERAL ENGINEERS. HOLLINWOOD. JC/MK. LANCASHIRE. TELEGRAMS: FERRANTI HOLLINWOOD TELEPHONE: FAILSWORTH 2000… | ||
| img309 | The correct connection of ignition coils on experimental cars based on polarity markings. | ||
| View original record | Rm/FD. c. to RC/GJ. 6017A Rm/RC.6/JH.23.10.37. re Ignition Coils. All coils fitted to experimental cars should be connected with the primary leads reversed unless marked on the top of the coil with… | ||
| img310 | Five points of action regarding the Wraith ignition coil. | ||
| View original record | To Rm/Wst. 60171 BY/RD.4/B.29.5.37. WRAITH IGNITION COIL - LOP. D.75673. Referring to the five items in Rm/Wst.8/JH.27.5.37. The items have been dealt with as follows :- (e) Thackeray Washer -… | ||
| img311 | Alteration notice for the Wraith Ignition Coil, listing new parts and suggesting a die modification. | ||
| View original record | TO. HPS c. Rm/Wst. 6017 BY/RD.3/B.1.7.37. Wraith Ignition Coil - LOP. D.75673. Please receive herewith our alteration No: 1511/Dss, adding the following new parts to the above LOP., in accordance with… | ||
| img312 | Modifications to the Wraith ignition coil for flexible connections and polarity reversal. | ||
| View original record | To. HPS. [Struck through] c. Rm/Wst. 6017. BY/RD.2/B.1.7.37. WRAITH IGNITION COIL - R.R. Sch.1103. In order to provide flexible connections for the primary winding, and we shall also take the… | ||
| img313 | Suggestion for fitting PIII ignition coils to facilitate fan adjustment and prevent damage. | ||
| View original record | L.R.M PIII Ignition coils We would suggest the PIII ignition coils being fitted with the high tension leads terminals toward the rear of the engine instead of the front as at present. This would… | ||
| img314 | Testing, comparison, and failure analysis of various ignition coils. | ||
| View original record | To By. from Rm/RC. c. By/RD. 6017. Rm/RC.5/MH.26.10.37. IGNITION COILS. We have received from HPS/TT three D.75673 ignition coils wound with 20,000 turns on the secondary. We have numbered these N1,… | ||
| img315 | Impregnation of ignition coils with bitumen compound and their attached output curves. | ||
| View original record | -2- Rm/RC.5/MH.26.10.37. To D75673 ignition coils be impregnated with bitumen compound. Output curves of the above coils are attached. Rm/RC. | ||
| img316 | Graph comparing the performance of different chassis ignition coils. | ||
| View original record | COMPARISON OF CHASSIS IGNITION COILS L6 - LUCAS COIL IN RR TYPE CASE. LT.1272 - LUCAS COIL IN METAL CASE N.1 - RR COIL TO D.76573 UNFILLED N.3 - SAME AS N.1 BUT IMPREGNATED & FILLED WITH BITUMEN… | ||
| img317 | Suggestion to reposition ignition coil terminals on the Phantom III Chassis to prevent damage during fan adjustment. | ||
| View original record | BY/RD. Rm/RC.2/JH.3.11.37 re Phantom III Chassis. In order to facilitate the adjustment of the fan when necessary and to eliminate the possibility of damaging the high tension lead terminal of the… | ||
| img318 | Orientation of ignition coils on the Phantom III Chassis. | ||
| View original record | To Rm/RC. BY/RD.2/B.12.11.37. Phantom III Chassis. As far as we can see, there is no objection to turning the ignition coils round so that the H.T. Terminal faces backwards. BY/RD. | ||
| img319 | Recommendation to remount the Phantom III ignition coils to avoid interference with the fan during adjustment. | ||
| View original record | To By. c. to Da. 6013 Rm/RC.2/JH.29.11.37. PHANTOM III IGNITION COILS. We have received complaints from the experimental dept., stating that the high tension terminal of the ignition coils on the… | ||
| img320 | Corona discharge issue found during an open-circuit test on a Wraith Type Coil, recommending a smaller insert for better clearance. | ||
| View original record | BY. BY/RD. 6017 Rm/RC.9/JH.15.11.37. re Wraith Type Coil. During an open-circuit test on one of the latest type coils, a corona discharge was noticed between the primary terminal insert and the base… | ||
| img321 | Modification to the windings of ignition coils for the Wraith model. | ||
| View original record | To By. c. By/RD. 6017. Rm/RC.2/JH.8.12.37. re Wraith Coils to LOP.D.75673. Our latest tests on ignition coils indicate that it is desireable to arrange the windings so that the ends of the primary and… | ||
| img322 | Advantageous alteration to the ignition coil fixing on the Phantom III. | ||
| View original record | To BY. & (Hm.) From RHC/Smd. c. to LA. c. to H1. c. to HFS. c. to RMN. IGNITION COIL - PHANTOM 111. BY/RD.2/B.16.12.37 We have investigated the fixing of the ignition coils with regard to fan belt… | ||
| img323 | Agreement to alter the fixing of the Phantom III ignition coils. | ||
| View original record | By. from Rm. c. RHC. 6017. Rm3/R.24.12.37. IGNITION COIL P.III. With reference to RHC/Smdl/EMG.22.12.37., we agree with the proposal to alter the fixing of the ignition coils forthwith. Rm. | ||
| img324 | Graph comparing the performance of various chassis ignition coils, plotting secondary kilo volts against sparks per second. | ||
| View original record | COMPARISON OF CHASSIS IGNITION COILS L6 - LUCAS COIL IN RR TYPE CASE LTB12 - LUCAS COIL IN METAL CASE N1 - RR. COIL TO D.75573 UNFILLED N3 - SAME AS N1 BUT IMPREGNATED & FILLED WITH BITUMEN COMPOUND… | ||
| img325 | Graph comparing the performance of different chassis ignition coils. | ||
| View original record | COMPARISON OF CHASSIS IGNITION COILS A = LUCAS COIL IN R.R. TYPE CASE B = LATE TYPE LUCAS COIL IN METAL CASE N1 = R.R. COIL TO D.T.S. 573. UNFILLED N2 = SAME AS N1, BUT IMPREGNATED & FILLED WITH… | ||
| img326 | Estimated cost breakdown and savings calculation for a coil, part number D.75673. | ||
| View original record | 6017. ESTIMATED COSTS OF COIL TO D.75673. Winding 1.836 material .982 labour. Insulator D.74448 - .250 material. Coil case D.74449 - 1/- each. Coil insulator D.74450 - 1/3 each. Total cost = 4/4 +… | ||
| img327 | Telegram received by telephone regarding a delay for Robotham, a fitting, and mileage covered. | ||
| View original record | 6017. ROLLS-ROYCE LTD. CHILDS. TELEGRAM RECEIVED BY TELEPHONE. Please note Rm. Time Received 4.15. Date 22 2 38. To RECEIVED. By DB. from Chaleureux H.15 22nd inst. Robotham delay coll. fitted… | ||
| img328 | Standardizing coils and troubleshooting a misfiring issue on car 6.B.IV. | ||
| View original record | 6017. To Rm/IMW - Chateauroux. c. to Rm/Wym. Rm/RC.9/JH.23.2.38. We are proposing to standardise either the Lucas or Delco-Remy coil and for this reason are very interested in their respective merits.… | ||
| img330 | Issues with a Delco-Remy coil and KLG spark plugs on a Bentley car. | ||
| View original record | 6017. To Rm/Waller, Hotel de France, Chateauroux, Indre, FRANCE. Rm/RC.20/JH.28.2.38. Thanks for your memo. of the 24th. The Delco-Remy coil is evidently wound for use on a car with a positive earth.… | ||
| img331 | The despatch of coil cases and heads to Messrs. Lucas and the subsequent ordering of coils. | ||
| View original record | To HPS. c. to RC/GJ 6017. Rm/RC.1/JH.2.3.38. re Lucas Coils in R.R. Cases. Will you please arrange for the following to be despatched to Messrs. Lucas - 3 D.74449 coil case. 3 D.74450 coil head.… | ||
| img332 | Preliminary tests of a new coil for the Wraith model and its potential standardization. | ||
| View original record | RC 6017. By. from Rm. Rs. Ba. By/RD. Rm4/R.3.3.38. COILS FOR WRAITH. Attached is a report on the preliminary tests on the Rolls-Royce coil which has been designed on the lines of the high output… | ||
| img333 | Design and cold-weather testing of an improved ignition coil. | ||
| View original record | To Rm. Rm/RC.12/JH.3.3.38. re Improved R.R. Ignition Coil. HPS/TT. has made an ignition coil which has been designed to work without a ballast, also to give better performance when working under low… | ||
| img334 | Test data comparing a new outside primary ignition coil against a Delco-Remy model. | ||
| View original record | NEW TYPE R.R. OUTSIDE PRIMARY IGNITION COIL. R.R. Delco. Primary Resistance ...... 2.865 W. 2.91 W. Secondary Resistance.... 3740 W. 4000 W. Primary Impedance....... 4.97 W. 3.55 W. Secondary… | ||
| img335 | Sending coil cases, heads, and screws to Messrs Lucas for fitting and requesting an official order for the work. | ||
| View original record | To D/E.P. from HPS/WSC. HA/RC. G/Aba. Rm/RC. 6017. qHPS/WSC.13/BA.3.3.38. O/52400. We hand you herewith:- 3 - D.74449 Coil Cases. 3 - D.74450 Coil heads. 12 - D.74430 Screws. Will you please forward… | ||
| img336 | Letter from Delco-Remy & Hyatt Ltd. regarding the dispatch of coils, an automatic advance arrangement, and a high tension wire sample. | ||
| View original record | DELCO-REMY & HYATT LTD. Head Office & Works: 111, GROSVENOR ROAD, LONDON, S.W.1 Telegrams: DELRENHYAT, SOWEST, LONDON. Telephones: VICTORIA 6242 (7 LINES) Messrs. Rolls-Royce, Ltd., Derby. 6017 YOUR… | ||
| img337 | Instructions for modifying the ignition circuit on Wraith experimental cars to improve starting ability. | ||
| View original record | To HPS. c. Rm/Aym. c. Rm/RC. 6017. BY/RD.4/B. 31.3.38. WRAITH. In order to enable us to prove the starting ability when a Rolls-Royce Coil is fitted, we propose to connect the ignition coil feed… | ||
| img338 | Requesting a covering order for three RR12 ignition coils supplied by Messrs. Lucas. | ||
| View original record | To Roy/MS. c. to G/JWH. 6017 Rm/RC.14/JH.8.4.38. re Advice Note SLC.6078. Will you please arrange for a covering order to be sent to Messrs. Lucas for three RR12 ignition coils, these have been wound… | ||
| img339 | The fitting of Delco ignition coils for the Wraith III model. | ||
| View original record | BY/MS c. Rm. 6017. DA.3/G.13.4.38. CHILDS WRAITH 111. IGNITION COILS. D.CD.614 herewith shews the Delco Ignition coil mounted on the standard coil bracket and using the standard Delco coil fixing. It… | ||
| img340 | The production of half a dozen new coil brackets for testing on Wraith III ignition coils. | ||
| View original record | 6017. To HPS. Rm/RC.6/JH.26.4.38. IGNITION COILS (WRAITH III). In order to test out the new coil bracket will you please arrange for ½ doz. to be made as per drg. DCD.614. Rm/RC. | ||
| img341 | Letter to Delco Remy & Hyatt Ltd. regarding ignition coil temperature tests and a request for a service guarantee. | ||
| View original record | 6119 Rm/RC.11/JH. 5th May, 1938. Messrs.Delco Remy & Hyatt Ltd., 111, Grosvenor Road, LONDON.S.W.1. For the attention of W.O. Kennington Esq. Dear Sirs, We have just completed a series of tests on… | ||
| img342 | Engine flywheel advance settings and discussing spring drive modifications. | ||
| View original record | -2- Rm/RC.11/JH.5.5.38. R.P.M. Engine. 250 500 750 1000 1500 2000 2500 3000 3500 Advance. Flywheel. start. 5° + 2° 9° + 2° 13° + 2° 18° + 2° 21° + 2° 23° + 2° 25° + 2° 27° + 2° We have now provided a… | ||
| img343 | Letter from Delco-Remy & Hyatt Ltd. regarding the supply and modification of coils and distributors. | ||
| View original record | DELCO-REMY & HYATT LTD. Head Office & Works 111, GROSVENOR ROAD, LONDON, S.W.1. Telegrams: DELREMYHAT, SOWEST, LONDON Telephones: VICTORIA 6242 (7 LINES) Messrs. Rolls-Royce, Ltd. Derby. YOUR REF.… | ||
| img344 | Decision on ignition coils for the Wraith model, pending further testing with Delco coils. | ||
| View original record | ROY c. RHC. c. Rm. c. Hs R.C. 6017, BY.26/G.10.5.38. WRAITH - RE: IGNITION COIL. In view of the discussion at the Conference today, where it was agreed that no decision should be made in regard to the… | ||
| img345 | Coil temperature tests comparing the cooling effect of metal versus bakelite ignition coil cases. | ||
| View original record | To BY. c. to BY/RD. 6017. Rm/RC.8/JH.12.5.38. COIL TEMPERATURE TESTS. In order to ascertain whether on ignition coils, a metal case has any advantage over the bakelite case, we have carried out a… | ||
| img346 | Test report comparing the primary temperatures of various coils under different conditions at an ambient temperature of 70°C. | ||
| View original record | -2- RM/RC.8/JH.12.38. Test (3) similar to test (2) but with an ambient temperature of 70°C. No ballast. Ballast. No ballast Ballast. DELCO Wraith Special Lucas. 20,000 R.R. To our specification With… | ||
| img347 | Issues with ignition coils for the Wraith model, specifically internal overheating and the risks of not using a ballast resistor. | ||
| View original record | Noted [Signature] EX Rm. 6017. BY.18/G.18.5.38. WRAITH - IGNITION COILS. In considering the various reports, which have been produced recently in regard to the internal temperatures of the various… | ||
| img348 | Specification for a 'Glowray' Ballast and the production test of an ignition coil ballast. | ||
| View original record | Ey. from Rm/RC. By/Rd. RHC/Smd. 6017. Rm/RC2/R.20.5.38. Re: Specification for "Glowray" Ballast. to LOP. DW.296. Herewith copy of specification No. ELC11/B. for the production test of the ignition… | ||
| img349 | Production test specification for an Ignition Coil Ballast Resistance to LOP. DW.296 using 'Glowray' wire. | ||
| View original record | SPECIFICATION NO. ELC. 11/B. Production Test of Ignition Coil Ballast Resistance to LOP. DW.296 ("Glowray" Wire) A rig should be used on which are connecting pins, over which three ballast resistances… | ||
| img350 | Request for temperature test figures on standard production ignition coils for Bentley and Phantom III models. | ||
| View original record | To Rm/RC. .6617. BY/RD.1/B.20.5.38. IGNITION COILS - SEC.8140. Will you please let us have figures for a temperature test on the standard production coil :- Bentley - D.72503 (22 S.W.G.). Ph.III -… | ||
| img351 | The advantages of metal-cased ignition coils and the commencement of new tests. | ||
| View original record | To By/RD. c. to By. 6017. Rm/RC.8/JH.23.5.38. re Ignition Coils. Please note that the information contained in our memo. Rm/RC.8/JH.12.5.38. was not intended to represent running temperatures of the… | ||
| img352 | Request to obtain a new 'Sports' ignition coil from Messrs. Lucas for a 12 volt system. | ||
| View original record | 6017. To Roy/Ms. Rm/RC.2/JH.25.5.38. Will you please obtain for us from Messrs. Lucas one of their new "Sports" ignition coils for use on a 12 volt system. The makers claim that this unit will work in… | ||
| img353 | Temporary metal case to test temperature drop on Wraith III ignition coils. | ||
| View original record | c. Rm. WRAITH III. IGNITION COILS. To test the temperature drop with a metal case on Wraith coil, we have produced D.CD.686, this is temporary only and for checking purposes, if it does drop the… | ||
| img354 | Requesting an order for Bentley III Ignition Coils from Delco Remy Ltd. | ||
| View original record | To Roy/MS. 6017. Rm/RC.8/JH.27.5.38. Bentley III Ignition Coils. Will you please place an order with the Delco Remy Ltd., 111 Grosvenor Road, London, for 6 High Output coils for 12 volt system.… | ||
| img355 | Requesting a covering order for three high output Delco Remy ignition coils. | ||
| View original record | To Roy/MS. c. to G/WFH/CA. 6017 Rm/RC.8/JH.11.6.38. re Delco Remy Ignition Coils Will you please send a covering order to Messrs. Delco Remy & Hyatt Ltd., for three high output coils, received in… | ||
| img356 | Invoice for Delco-Remy Coils which cannot be traced in the Stores Department. | ||
| View original record | 25-26 march CHILDS 6119487 Rm G/WFH/WHP.45/MG.28.6.38. We have received an invoice from Messrs. Delco-Remy & Hyatt Ltd. of 111 Grosvenor Road, London. S.W.I. dated the 8th June for 3 Delco-Remy Coils… | ||
| img357 | Invoice for headlamps and a coffee pot received against an untraceable order, requesting their return. | ||
| View original record | [Handwritten]: Mrs Sheffields, 8 June, For Mr De L'H. [Header]: OM/HSW/OM.28.6.28. [Typed Body]: We have received an invoice for the set of III Crompton Head Lamps, colour-grey & Hysil Ltd. for S.W.I.… | ||
| img358 | Request to issue a covering order for Delco ignition coils and a Delco Remy starter motor. | ||
| View original record | To Roy/MS. c. to G/WFH. 6119 Rm/RC.9/JH.2.7.38. Will you please issue a covering order for 12 529C Delco Ignition coils and one 727W Delco Remy starter motor to the Delco Remy and Hyatt Ltd., 111,… | ||
| img359 | Invoice from Delco-Remy & Hyatt Ltd. for 12 Volt Delco Ignition Coils. | ||
| View original record | CHILDS. Did we have say a dozen? Rm 6119. G/WPH/CA78/NR 14.7.38 Rm We have an invoice from the Delco-Remy & Hyatt Ltd. dated 12th July charging us 10/-d.each nett for 6 DRH1424 12 Volt Delco Ignition… | ||
| img360 | Letter from Delco-Remy & Hyatt Ltd. regarding a delayed invoice for six ignition coils delivered the previous year. | ||
| View original record | COPY Delco-Remy & Hyatt Ltd., 111, Grosvenor Road, London. S.W.I. Messrs. Rolls-Royce Ltd., Derby. Our Ref. LB/EJ. 11th July, 1938. Dear Sirs, In accordance with an arrangement reached between your… | ||
| img361 | Requesting a metal case be made for a Wraith ignition coil for a temporary temperature test. | ||
| View original record | 6017 To HPS c. EV c. Rm/RC. BY/RD.2/B.13.6.38. WRAITH IGNITION COIL : SEC.8140 : D.CD.686. In order to test the temperature charge with metal case, will you please make up, one metal case, roughly,… | ||
| img362 | Requesting parts for a Wraith ignition coil experiment using a Delco-Remy case and Mexphalte compound. | ||
| View original record | To HPS. c. Rm/RC. 6017 BY/RD./B.16.6.38. WRAITH IGNITION COIL : SEC.8140. Will you please put in hand one set of parts to prints herewith :- DW.717 - Half Collar - Ignition Coil. 2 off. When these are… | ||
| img363 | Scheme showing how to test an existing ignition coil in a Delco metal case. | ||
| View original record | CHILDS Dr/No. 6017 c. Rm. DA.11/G.20.6.38. IGNITION COILS. Herewith D.CD.746 shewing how we want to test an existing coil in a Delco metal case. The particulars have been issued to HPS. and this… | ||
| img364 | The testing procedure for the Wraith Delco ignition coil. | ||
| View original record | To RHC. c. Rm/RC. 6017. BY/RD.6/B.23.6.38. WRAITH - DELCO IGNITION COIL - SEC.8140. We do not propose that the ignition coil should receive any bench test, but should be fitted to the engine as… | ||
| img365 | Proposal for an ignition coil with a longer, larger diameter sheet metal case and new winding specifications. | ||
| View original record | BT/NS. c. Rm/RC. 6017 DA.4/G.29.6.38. IGNITION COILS. Herewith D.CD.757 Ignition Coil proposal. We have taken the opportunity to have a longer and larger diameter case of sheet metal construction.… | ||
| img366 | Requesting the arrangement of special brackets for a Delco-Remy coil. | ||
| View original record | To HPS. 6017: Rm/RC.8/JH.6.7.38. re 27.G.VI. Will you please arrange for the special brackets for the Delco-Remy coil to be fitted to the above car. In this case the brackets will have to be fittedto… | ||
| img367 | Request for the production of seven sets of coil fittings for the Wraith Ignition Coil. | ||
| View original record | 6017 To HFG. c. Em/RC. c. BY. c. RHC/CAN. RE Do we want 7 only BY/RD.1/B.12.7.38. WRAITH IGNITION COIL : D.CD.757 : SEC.8140. Will you please put in hand, seven sets of Coil Fittings to the details… | ||
| img368 | Graph comparing the performance of ignition coils under specific test conditions. | ||
| View original record | COMPARISON OF IGNITION COILS. CONDITIONS OF TEST :- RUN WITH DELCO REMY .75 MAKE RATIO 12 VOL USING 2.6 OHMS 22.SW BALLAST RESISTANCE TAKEN FROM COIL 0.5 M 10 MINS PERIOD BETWEE AXIS VALUES: 5.6, 4.8,… | ||
| img369 | Graph plotting an unlabeled vertical axis against two horizontal axis scales: 'Secondary Kilo-Volts' and 'Primary Current Amps'. | ||
| View original record | PRIMARY CURRENT AMPS, 0.8, 1.6, 2.4, SECONDARY KILO-VOLTS, 2, 4, 6, 40, 80, 120, 160 | ||
| img370 | Graph plotting Breaks Per Sec. against primary and secondary values. | ||
| View original record | PRIMARY C... 2 4 SECONDARY BREAKS PER. SEC. 0 40 80 120 160 0 2 4 6 0.8 1.6 2.4 | ||
| img372 | Design and winding specifications for various electrical coils. | ||
| View original record | PARTICULARS OF DESIGN & WINDING QUANTITIES. R.R. COIL D.72503 PRIMARY WDG. 300 TURNS OF 22 S.W.G. ENAM. S.C.C. COPPER WIRE. RESISTANCE · 967 OHMS AT 19°C. IMPEDANCE · 3·72 OHMS AT 19°C. INDUCTANCE ·… | ||
| img373 | Comparative table of specifications for various ignition coils. | ||
| View original record | SIMILAR TO D.75672 SECONDARY WDG. 15,000 TURNS OF 42 S.W.G. ENAM. COPPER WIRE. RESISTANCE 2810 OHMS AT 18°C. IMPEDANCE 8120 OHMS AT 18°C. INDUCTANCE 24-25 HENRIES. RR. AERO-COIL DC.277 WDGS TO D.7966.… | ||
| img374 | Proposal for a new ignition coil design, including details on its casing and electrical specifications. | ||
| View original record | c. Rm. 6017 DA.4/G.29.6.38. IGNITION COILS. Herewith D.CD.757 Ignition Coil proposal. We have taken the opportunity to have a longer and larger diameter case of sheet metal construction. Regarding the… | ||
| img375 | List of materials and specifications for building primary and secondary windings for electrical coils. | ||
| View original record | -2- 36 SWG. (.0076 dia.) tinned Copper Wire. Sec.Conn. 1¼ yds. 10/40's D.S.C. Tinned Copper Flex. ¾ yd. The two Terminal Screws K.1814A should be drilled .0468 dia. from end to end to accomodate end… | ||
| img376 | Requesting a covering order to Delco-Remy & Hyatt Ltd. for supplied coils. | ||
| View original record | J 6119. To Roy/Ws. from Rm/RC. c. G/WFH/CA. Rm/RC.12/MH.18.7.38. DELCO-REMY COILS. With reference to memo G/WFH/CA78/NR.14.7.38, will you please issue a covering order to Delco-Remy & Hyatt Ltd., for… | ||
| img377 | Request to obtain one Runbakes oil immersed ignition coil for a 12 volt system. | ||
| View original record | To Roy/Ms. 6017. Rm/RC.8/JH.8.8.38. Will you please obtain for us. one Runbakes oil immerced ignition coil suitable for 12 volt system. This unit may be obtained from Runbaker Electrical Products,… | ||
| img378 | Letter to Delco & Hyatt Ltd. concerning tests carried out on their coil. | ||
| View original record | 6017 EXPERIMENTAL DEPARTMENT. Rm/RC.9/JH. 13th August, 1938. Messrs. Delco & Hyatt Ltd., 111, Grosvenor Gardens, LONDON.S.W.1. For the attention of Mr. Rushton. Dear Sirs, Herewith copies of tests… | ||
| img379 | Road test report on Delco-Remy high-put coils, measuring resistance and temperature under different conditions. | ||
| View original record | -2- DELCO REMY & HYATT LTD. Rm/RC.9/JH.13.8.38. ROAD TEST ON 24.G.VI. DELCO-REMY HIGH-PUT COIL No.19.A. Test taken without the use of heat resistance washers. Working voltage during test 15. TIME. |… | ||
| img380 | Output tests on Delco Remy high output production coils. | ||
| View original record | OUTPUT TESTS ON COILS. MAKER. Delco. Remy TYPE High Output (Production) DISTRIBUTOR USED Delco. Remy MAKE RATIO .75 LOAD VALUE .5 megohms. VOLTAGE 12 AMBIENT TEMPERATURE 27°C DATE 19-7-38 CONDITIONS… | ||
| img381 | Output tests on Delco-Remy high output production coils, recording gap, kilo-volts, and primary current at various distributor speeds. | ||
| View original record | OUTPUT TESTS ON COILS. MAKER: Delco-Remy TYPE: High Output (production) DISTRIBUTOR USED: Delco-Remy MAKE RATIO: .75 LOAD VALUE: .5 Megohms VOLTAGE: 12 AMBIENT TEMPERATURE: 27°C DATE: 19.7.38… | ||
| img382 | Output tests on Delco-Remy High Output No. 215A coils. | ||
| View original record | OUTPUT TESTS ON COILS. MAKER: Delco-Remy TYPE: High Output No 215A DISTRIBUTOR USED: Delco-Remy MAKE RATIO: .75 LOAD VALUE: .5 megohms VOLTAGE: 12 AMBIENT TEMPERATURE: 23°C DATE: 6-7-38 CONDITIONS OF… | ||
| img383 | Output tests on a Delco-Remy High Output No. 15A coil. | ||
| View original record | OUTPUT TESTS ON COILS. MAKER: Delco-Remy TYPE: High Output No 15A DISTRIBUTOR USED: Delco-Remy MAKE RATIO: .75 LOAD VALUE: .5 megohms VOLTAGE: 12 AMBIENT TEMPERATURE: 50°C DATE: 6.7.38 CONDITIONS OF… | ||
| img384 | Output tests on a Delco-Remy High Output N°15A coil. | ||
| View original record | OUTPUT TESTS ON COILS MAKER. Delco-Remy TYPE High Output N°15A DISTRIBUTOR USED Delco-Remy MAKE RATIO .75 LOAD VALUE 5 Megohms VOLTAGE 12 AMBIENT TEMPERATURE 70°C DATE 6.7.38 CONDITIONS OF TEST Output… | ||
| img385 | Output tests on coils. | ||
| View original record | OUTPUT TESTS ON COILS. MAKER: Delco-Remy TYPE: High Output 16A. DISTRIBUTOR USED: Delco-Remy MAKE RATIO: .75 LOAD VALUE: .5 Megohms VOLTAGE: 12.0 AMBIENT TEMPERATURE: 24°C DATE: 8-8-38 CONDITIONS OF… | ||
| img386 | Output test report for a Delco-Remy High Output 16A ignition coil. | ||
| View original record | OUTPUT TESTS ON COILS. MAKER. Delco-Remy TYPE High Output 16A DISTRIBUTOR USED Delco-Remy MAKE RATIO .75 LOAD VALUE .5 megohms VOLTAGE 12 AMBIENT TEMPERATURE 50°C DATE 8.8.38 CONDITIONS OF TEST Coil… | ||
| img387 | Performance issues with Delco coils in Wraith cars during high temperatures and the subsequent search for a more reliable alternative. | ||
| View original record | RC. By. from Rm. c. Hs. c. RHC. 6017. Rm3/R.15.8.38. WRAITH COILS. During the recent warm weather we have been subjecting our Wraith cars to some fairly severe treatment, including lapping at… | ||
| img388 | Issues with Delco coils on Wraith cars during hot weather testing and the plan to find a replacement. | ||
| View original record | RC 6017. By. from Rm. c. Hs. c. RHC. Rm3/R.15.8.38. WRAITH COILS. During the recent warm weather we have been subjecting our Wraith cars to some fairly severe treatment, including lapping at… | ||
| img389 | The testing and production recommendation for Wraith model ignition coils. | ||
| View original record | By. from Rm. Hs. RHC. X 6017. Rm3/R.20.8.38. WRAITH COILS. Further to Rm3/R.15.8.38., we have now carried out further tests in the Cold Chamber on starting, and as a result of these, recommend that we… | ||
| img390 | From Rm to Roy/Les regarding attached documents to clarify the purchase of coils. | ||
| View original record | 6017, Roy/Les. from Rm. Rm4/R.20.8.38. Attached are two notes which we have written on the coil situation, and a letter we have written to Rushton. These should clear up the position with regard to… | ||
| img391 | Misfire troubles with Delco ignition coils on the Wraith model during hot weather. | ||
| View original record | 6017 To By. c. to Da. c. to By/RD. c. to Mx. Rm/Wym.9/JH.24.8.38. WRAITH IGNITION SYSTEM - COILS. During the recent spell of hot weather we have run into misfire troubles with the Delco coil, due to… | ||
| img392 | Coil tests to determine maximum running temperature and performance effects. | ||
| View original record | To Rm. Rm/WB.1/JH.25.8.38. Coil Tests to determine the maximum running temperature and the effect on performance. Six coils were tried on 24.G.VI as follows. Lucas sports type. Delco. R.R. 20,000… | ||
| img393 | Performance table comparing different component types, their fixing methods, maximum operating temperatures, and remarks on misfires. | ||
| View original record | -2- Rm/WB.1/JH.25.8.38. TYPE. FIXING. MAX. TEMP. REMARK. Lucas Crankcase 106°C. No misfires under any Sports. without heat conditions. resisting washers. Lucas Crankcase 110°C. No misfires. Sports.… | ||
| img394 | Test note detailing a misfire event of a Runbaken oil-filled coil at high temperature. | ||
| View original record | -3- Rm/WB.1/JH.25.8.38. Runbaken oil filled. Crankcase. 124°C. Misfired as coil heat approached max. union. | ||
| img395 | Ignition coil temperature tests under hot summer conditions. | ||
| View original record | 6017. To By. c. to Da. c. to By/RD. c. to RM/Wym. Rm/RC.8/JH.26.8.38. re coil temperature tests. The recent spell of hot weather has proved to us that the Delco-Remy coil, when subjected to hot… | ||
| img396 | Performance comparison and recommendation of various ignition coils for the Wraith model. | ||
| View original record | -2- (6) The Lucas coil, although not having the output of the 20,000 turn R.R. coil, gives an equal performance under all conditions. Up to date we have had no failures on this coil. 6 more coils are… | ||
| img397 | Test results detailing the temperature curves for various ignition coils under different fitting conditions. | ||
| View original record | DETAILS OF TEMPERATURE CURVES. (1) No.19A Delco-Remy coil fitted to std. bracket, heat resisting washers not used. Maximum temperature of crankcase 79°C. (2) As curve (1) but using the heat resisting… | ||
| img398 | Test results for a Delco-Remy bracket and distributor coil, noting unsuitability for the Wraith model. | ||
| View original record | -2- to Delco Remy type bracket. Maximum bracket temperature 76°C. Not suitable for Wraith. Misfires. During each of these tests the maximum battery voltage was 15.1 volts. In the case of the out put… | ||
| img399 | Graph showing the temperature of various ignition coils over time, taken on a 24 G.VI chassis. | ||
| View original record | TEMPERATURE OF IGNITION COILS TAKEN ON 24 G. VI Y-AXIS: TEMPERATURE IN C X-AXIS: TIME IN HOURS. LEGEND: (1) 19.A. DELCO REMY FITTED ON STD. BRACKET WITHOUT HEAT RESISTING WASHERS. (2) (AS 1) BUT WITH… | ||
| img400 | Graph comparing the output characteristics of various ignition coils under specific test conditions. | ||
| View original record | OUTPUT CHARACTERISTICS OF IGNITION COILS AFTER RUNNING 1/2 HRS IN AN OVEN MAINTAINED AT 70°C USING DELCO REMY DISTRIBUTOR .75 MAKE RATIO. .5 MEGOHM LOAD D.75260 & D.76573 COILS HAVE CONRAY BALLAST… | ||
| img401 | Factory costs for Ignition Coil D.75673 and Ballast Resistance DW.296, with a note on a future price reduction. | ||
| View original record | To Rm/RC. from G/Rb. G/Rb.1/A/R.16.9.38. Re: Ignition Coil D.75673 and Ballast Resistance DW.296. Rm/RC.6/JH.12.9.38. Kindly note the present factory cost of the parts to which you refer is as… | ||
| img402 | Comparison tests between a standard and a special ignition coil. | ||
| View original record | 6119. EXPERIMENTAL DEPARTMENT. Rm/RC.3/JH. 4th. February, 1939. Messrs. Delco-Remy & Hyatt Ltd., 111, Grosvenor Road, LONDON. S.W.1. For the attention of Mr. B. Rushton. Dear Sirs, We have now… | ||
| img403 | Page 2 of a letter concerning the subjection of a coil to a specific ambient temperature. | ||
| View original record | -2- Rm/RC.3/JH. 4th. February, 1939. time, the coil is subjected to an ambient temperature of 70°C. Yours faithfully, FOR ROLLS-ROYCE LTD. | ||
| img404 | Request for the factory costs of an ignition coil and ballast resistance. | ||
| View original record | 6017 To G/Rb. Rm/RC.6/JH.12.9.38. Will you please let me have the factory costs of the ignition coil to LOP.D.75673 and ballast resistance complete to DW.296. Rm/RC. | ||
| img405 | Report on ignition coils and a decision made regarding choke springs. | ||
| View original record | COPY FOR FILES ONLY. 601n 8.2.39. IGNITION COILS. Herewith a report by Brazier on ignition coils, apparently we have equally as good R.R. coils as anything other makers can offer. With regard to the… | ||
| img406 | The results of tests on fourteen different ignition coils. | ||
| View original record | To Rm. Rm/WB....6.2.39. Ignition Coils on 24.G.6. We have tested various coils for road performance, cold starting and maximum temperature, to find those which can be looked upon to give reliability… | ||
| img407 | Comparative table of performance data for various ignition coils. | ||
| View original record | Type of coil. Max. Running temp.°C. Road performance. Time taken to start engine at 6°F. Standard Wraith. 124°C. Good performance. No misfires. 11 seconds. Standard Wraith. in metal case. 96°C. " " 10… | ||
| img408 | Performance comparison table for a Standard Phantom III component versus a Run Baken oil-filled component. | ||
| View original record | Standard P.III. 102°C. Good performance. 7 secs. Run Baken oil filled. Bad misfires. | ||
| img409 | Experimental department report on oscillograph work on chassis ignition coils. | ||
| View original record | R.R. 308. ST. 74997/4/11/38. C.E. 6017 EXPERIMENTAL DEPARTMENT REPORT. REFERENCE:- Lr/HWS./SGL.4/GB.7.3.39. Subject of Report:- Oscillograph work on chassis ignition coils. General Conclusion:-… | ||
| img410 | Oscillograms showing the current through the primary circuit of a Wraith ignition coil, comparing two types of distributors. | ||
| View original record | WRAITH IGNITION COIL. OSCILLOGRAMS SHOWING CURRENT THROUGH PRIMARY CIRCUIT OF COIL. Veh 3. AMPS 2.0 1.5 1.0 0.5 0. A. B. DELCO - REMY DISTRIBUTOR. 2 REVS [ENGINE]. ROLLS ROYCE DISTRIBUTOR. CIRCUIT… | ||
| img411 | Oscillograms showing a comparison of voltage and current curves across a spark gap for a Wraith ignition coil using R.R. and Delco Remy distributors. | ||
| View original record | WRAITH IGNITION COIL. OSCILLOGRAMS SHEWING VOLTAGE AND CURRENT ACROSS SPARK GAP Veh 4 VOLTS ACROSS GAP VOLTAGE CURVES 8000 6000 4000 2000 0 R.R. DISTRIBUTOR 6000 VOLTS 4000 2000 0 .005 SEC DELCO REMY… | ||
| img412 | Letter from Bosch detailing the wiring and functionality of a Super Energy Coil TH. | ||
| View original record | Ignition Coils. TELEPHONE: SHEPHERDS BUSH 2080 (4 LINES) TELEGRAMS: ELEOBRIGHT, PHONE, LONDON BOSCH LIMITED SOLE AGENTS IN GT. BRITAIN & IRELAND FOR BOSCH PRODUCTS MADE BY ROBERT BOSCH G.m.b.H.… | ||
| img413 | Page 2 of a letter from Bosch Limited with instructions for fitting a coil and mention of an enclosed quotation. | ||
| View original record | (2) C. 3. 39. Since the primary winding is situated outside the iron core of the coil it is essential that the coil is not surrounded by a metal ring, or pushed through a metal dash board. It should… | ||
| img414 | Requesting the purchase of a Bosch Super Energy Coil. | ||
| View original record | To Roy. c.c. to G/JWH. 6017. Rm/RC.5/JH.15.3.39. re Bosch Super Energy Coil. Will you please obtain for us from Bosch Ltd. Larden Road, Acton, London.W.3. one Bosch TH.12/1 coil. O/N.52409. Rm/RC. | ||
| img415 | Wiring diagram for a Super Energy Coil. | ||
| View original record | SUPER ENERGY COIL TH 6/1 AND TH 12/1 15 16 1 4 STARTER 30 + 31 CORRECT INCORRECT BOSCH, LIMITED. LONDON 2.3.39. O/110 | ||
| img416 | On electrical development, advocating for better cooperation between experimental design and production, and outlining a process for failure investigation. | ||
| View original record | 6017 By. from Rm. --Rm2/R.1.4.39. ELECTRICAL DEVELOPMENT. We feel that the electrical work would go better if there were a little more co-operation between the experimental design and production. In… | ||
| img417 | Investigation report on a Wraith ignition coil failure on WXA.99. | ||
| View original record | 6017 To By. from Rm/RC. c. to Mx. c. to By/SB. c. to By/RD. Rm/RC.5/JH.1.4.39. re Wraith Ignition Coil Failure on WXA.99. An ignition coil to D.75673 was returned from Cricklewood under their report… | ||
| img418 | Experimental department report on oscillograph work on the Wraith ignition system, comparing various distributors. | ||
| View original record | R.R. 306. ST. 74907/4/11/38. C.E. 6119 EXPERIMENTAL DEPARTMENT REPORT. REFERENCE:— Lr/HWS/SGL.7/WJ.19.4.39. Subject of Report:— OSCILLOGRAPH WORK ON WRAITH IGNITION. General Conclusion:— Oscillograph… | ||
| img419 | Oscillograph work comparing ignition systems for the 'Wraith' model. | ||
| View original record | Lr/HWS/SGL.7/WJ.19.4.39. OSCILLOGRAPH WORK ON 'WRAITH' IGNITION. Oscillograph records have been taken of the primary and secondary voltages and currents in a Wraith ignition coil. The measurements… | ||
| img420 | Analysis of ignition system waveforms, voltage peaks, misfiring, and spark energy measurements. | ||
| View original record | - 2 - The waveform showed a peak of about 7000 volts followed by one or more smaller peaks of about 2000 to 4000 volts. These curves were taken with the horizontal scale enlarged to about six times… | ||
| img421 | The performance issues of an experimental commutator distributor, focusing on arcing and low spark energy. | ||
| View original record | - 3 - energy of the spark. It is possible that when current measurements are made more accurate, and a good waveform obtained, that energy comparisons can be made with the oscillograph. Commutator… | ||
| img422 | Comparison of Wraith primary ignition current curves for Rolls Royce and Delco-Remy distributors at 650 and 1400 RPM. | ||
| View original record | WRAITH IGNITION PRIMARY CURRENT CURVES ROLLS ROYCE DISTRIBUTOR 650 R.P.M. AMPS 2 1 0 ROLLS ROYCE DISTRIBUTOR 1400 R.P.M. V.Ch.5 AMPS 2 1 0 DELCO - REMY 650 R.P.M. AMPS 2 1 0 DELCO - REMY 1400 R.P.M.… | ||
| img423 | Comparison of primary ignition voltage curves for a Wraith model, comparing the company's own distributor with a Delco-Remy distributor at different RPMs. | ||
| View original record | WRAITH IGNITION PRIMARY VOLTAGE CURVES ROLLS ROYCE DISTRIBUTOR 400 R.P.M. ROLLS ROYCE DISTRIBUTOR 650 R.P.M. DELCO - REMY DISTRIBUTOR 400 R.P.M. DELCO - REMY DISTRIBUTOR 650 R.P.M. 100 0 -100 V.C.H.6… | ||
| img424 | Graph comparing ignition voltage curves for Rolls-Royce and Delco-Remy distributors under sparking and non-sparking conditions. | ||
| View original record | WRAITH IGNITION SECONDARY VOLTAGE CURVES ROLLS ROYCE DISTRIBUTOR 2250 R.P.M. VOLTS 4000 2000 0 PLUG SPARKING PLUG NOT SPARKING VCH 7 DELCO - REMY DISTRIBUTOR 2250 R.P.M. S.G.L. 5.4.39 | ||
| img425 | Commutator distributor primary current curves at different RPMs and brush settings. | ||
| View original record | COMMUTATOR DISTRIBUTOR PRIMARY CURRENT CURVES VCH 8 850 R.P.M. NEGATIVE BRUSH RETARDED AMPS 2 1 0 850 R.P.M. NEGATIVE BRUSH ADVANCED 2250 R.P.M. NEG. BRUSH RET'D AMPS 2 1 0 2250 R.P.M. NEG. BRUSH… | ||
| img426 | Graph of Commutator Distributor Primary Voltage Curves at various RPMs and brush settings. | ||
| View original record | COMMUTATOR DISTRIBUTOR PRIMARY VOLTAGE CURVES VCH 9 850 R.P.M. NEGATIVE BRUSH RETARDED VOLTS 100 50 0 -50 -100 850 R.P.M. NEGATIVE BRUSH ADVANCED 2250 R.P.M. NEG. BRUSH RET. VOLTS 100 50 0 -50 -100… | ||
| img427 | The wiring connections for fitting a Bosch coil to vehicle 28.G.VI. | ||
| View original record | 6017 To HPS/WSC. from Rm/RC. c. Rm/FD. c. Rm/RC/MC. Rm/RC.4/MH.20.5.39. RE BOSCH COIL. Will you please arrange for a coil of the above type, which will be handed over by the Laboratory, to be fitted… | ||
| img428 | Testing of a changeover switch for a Bentley ignition system and a recommendation for further trials. | ||
| View original record | 6614 To By/RD. from Rm/RC. Rm/RC.11/MH.23.5.39. RE CHANGEOVER SWITCH FOR BENTLEY. In accordance with memo By/RD.3/B.22.3.39 two ignition coils were connected as suggested with the exception that an… | ||
| img429 | Advice note from Joseph Lucas Limited for a sample R12 Coil. | ||
| View original record | K.2 DESPATCH ADVICE NOTE SLD 16461 Please receive from JOSEPH LUCAS LIMITED BIRMINGHAM 19. 125968 The undermentioned Goods per Post Messrs Rolls Royce Ltd Derby. 9-11-1939 Telegrams: "LUCAS, TELEX,… | ||
| img430 | Invoice from Joseph Lucas Ltd. for a coil, requesting instructions for payment. | ||
| View original record | Rm/RC. 6017 G/WFH/CA.30/JE.13.12.39 We have an Invoice from Joseph Lucas Ltd., dated the 2nd inst., charging us 7/6d nett for 1 Coil No.408011 which they say was sent to us early in November for your… | ||
| img431 | To obtain one Lucas Sports Coil from Messrs. Lucas. | ||
| View original record | 6017 To Les. c. to G/JWH. Rm/RS.2/JH.13.12.39. Will you please obtain from Messrs. Lucas, one Lucas Sports Coil. O/N.52469. Rm/RC. | ||
| img432 | Most efficient winding arrangements for an ignition coil. | ||
| View original record | To Ev. c. to Jnr. RM/RC.8/JH.13.12.39. re Ignition. The most efficient arrangement for the windings of an ignition coil is obtained when the auto-transformer system is employed. In this the turns and… | ||
| img433 | Test report comparing output voltage of different ignition coil wiring arrangements for positive and negative earth systems. | ||
| View original record | -2- (A) PRIM SECONDARY CONTACT BREAKER (B) (C) (D) Tests have been taken by means of our H.T. voltmeter and the output voltage for the various arrangements taken. The following results were obtained… | ||
| img434 | Covering order for a Lucas coil. | ||
| View original record | 6017 To Les. c. to G/JWH. Rm/RC.6/JH.16.12.39. Will you please issue a covering order for 1 Lucas coil No.408011. This coil was received by us from Messrs. Lucas early in November. O/N.52409. Rm/RC. | ||
| img435 | Fitting of a Lucas 'R' type coil to the 'Ripplet 2.R.2' car. | ||
| View original record | Rlec 6017 To RH. c. to Ev. c. to Rm/RC/MC. Rm/RC.10/JH.9.2.40. Ripplet 2.R.2. The coil to be fitted to this car is a Lucas 'R' type and as we are not using a ballast, a platform is not required. We… | ||
| img436 | Instructions for fitting a Lucas 'R' type coil to the 'Ripplet 2.R.2.' car. | ||
| View original record | Elec 6017 To RH. c. to Ev. c. to Rm/RC/MC. Rm/RC.10/JH.9.2.40. Ripplet 2.R.2. The coil to be fitted to this car is a Lucas 'R' type and as we are not using a ballast, a platform is not required. We… | ||
| img437 | Request to obtain Bentley 60 & 80 ignition coils from Messrs. Lucas. | ||
| View original record | To Stores from HPS/RH. c. Rm/RC. HPS/RH.3/BA.21.2.40. O/52465. O/52478. Bentley 60 & 80 Ignition Coil. Will you please obtain from Messrs.Lucas as quickly as possible:- 4 - Lucas "Sport" Coils. 4 -… | ||
| img438 | The mounting of the Lucas ignition coil on the dashboard for the Ripplet model. | ||
| View original record | Coie. 6017 To Rm. c. to Ev/HH. Rm/RC Ev.12/JH.7.3.40. LUCAS IGNITION COIL ON DASHBOARD. RIPPLET. We send herewith 2 prints of PL.144, showing the Lucas ignition coil mounted on the dashboard of… | ||
| img439 | The procurement of ignition coils from Messrs. Lucas. | ||
| View original record | 6017 To Roy/ABS. from Rm/RGm. c. Rm/Wym. Rm/RC.1/OH.21.2.42. Will you please obtain from Messrs. Lucas the following ignition coils:- 6 - 6Q6 type coil 6 - E6-0 " " O/No.753. Rm/RC. | ||
| img440 | The mounting of the Lucas ignition coil on the dashboard for the Ripplet model. | ||
| View original record | File Elec +1022 6017 To Rm. c. to Ev/HH. Ev.12/JH.7.3.40. LUCAS IGNITION COIL ON DASHBOARD. RIPPLET. We send herewith 2 prints of PL.144, showing the Lucas ignition coil mounted on the dashboard of… | ||
| img441 | New drawings for ignition coil components for the L.H. Senior Range. | ||
| View original record | File (Coil) 6017 RM/RC To Rm. c.c. to Ev. Rm/HH.10/JH.24.4.40. L.H. Senior Range. Dashboard & Fittings. - Sec.7130. Ignition Coil. Sec.8140. PL.161 Mounting of Twin Coils on dash. We send you herewith… | ||
| img442 | The failure of an in-house ignition coil on the Wraith model, the decision to fit Delco coils, and a related oil consumption issue. | ||
| View original record | bo2o . Coil. BY/ID. c. Rm. c. Da. c. RMO. c. ROY BY.2/G.9.5.38. Jlec CHILDS 6017 WRAITH - IGNITION COIL. It was my intention to use the RR. design of coil for the first 100 cars, with the object of… | ||