Rolls-Royce Archives
| Identifier | Entry | ||
| scan 001 | Request for special parts to fit an engine with a Bosch magneto, with notes on ignition system requirements. | ||
| View original record | X.3199 To Na. from R. c. to Wor./Mr.Ellis. c. J. c. E. R4/P13.11.13. X.562 - X.427 X.800. X.3199. I want the necessary special parts providing so as to enable one of our engines on the test plate to… | ||
| scan 002 | Standard fitment and positioning of batteries in the car frame. | ||
| View original record | X.3199 To J. from R. c. to Wor. c. to Na. c. to E. c. to Da. c. to PN. R1/P29.1.14. X.664 RE BATTERIES IN FRAME X.3199 X.1304. Na1/IB24.1.14. With reference to the carrying of the batteries on the… | ||
| scan 003 | Battery box materials and battery specifications for self-starters. | ||
| View original record | Contd. -2- R1/P29.1.14. avoid the usexof celluloid, but not much harm could be done if the outer box were close fitting and possible lined with vulca asbestos or other non-absorbing and fire… | ||
| scan 004 | Tests on substituting hand magnetos with coil ignition for starting. | ||
| View original record | X.3199 Extract from Wor/Hyl/LG30315. X.1535. RE HAND MAGNETOS. X.3199. X.562. We are making tests to see if the hand magneto can be substituted by a coil ignition for starting, but our first… | ||
| scan 005 | Modifying a battery ignition system for cars equipped with a 12-volt self-starter. | ||
| View original record | X.3199 R2/B10.7.17. X.2814. X.31991 X.562. X.3716. X.1819. X.2511 X.543. X.699. X.1818 X.3129. BATTERY IGNITION FOR CARS, &c. Where a self starter is used as in the case of 7-CA we might well abandon… | ||
| scan 006 | Engine condenser positioning and size to protect platinum points, and the decision to use electric starters post-war. | ||
| View original record | Contd. -2- R2/B10.7.17. may benefit the running of the engine considerably. Regarding the position of the condenser, I think this should be between the beginning end of the primary winding and the… | ||
| scan 007 | Page discussing the synchronization of trembler ignition systems. | ||
| View original record | R.R. (M) (100 T) S. G. 543, 19-2-20 G 2618 Contd. -3- R2/E10.7.17. synchronised which is not the case with any trembler ignition. R. | ||
| scan 008 | Letter to the Air Board discussing improvements to magneto ignition systems for engines. | ||
| View original record | R.R. & A. (500 T) (S.D. 403. 26-4-17.) Bm. 2/156/13. X.3199. The Controller, Technical Dept., Air Board Office, Strand W.C. 21.8.17 X.3173. Dear Sir, X.3018 AND BATTERY X.2375. X800 X.3199 MAGNETO… | ||
| scan 009 | Magneto fitment and the development of a battery ignition system for the 'Eagle' aero engine. | ||
| View original record | 2. The Controller Contd. 6. We understand this new model will be fitted with suitable holes in the base for standard steady pinning arrangement to the base, but these steady pin holes and the height… | ||
| scan 010 | Extract from a letter to Commander Bristow regarding the development of a battery ignition system for aero engines. | ||
| View original record | B.B. Ellis (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. X.3199. X.3199 X.2512 X.1819 R6/W5917 Extract from letter to Commdr. Bristow. X 3173 Battery Ignition for Aero Engines Regarding the battery… | ||
| scan 011 | Modifications to the controls for a Magneto Remy-Ignition system. | ||
| View original record | To E. from EY. X.3199. 13th October 1917. EY1/G13.10.17. X.3173. X.3191. X.3199. X.2038 RE CONTROLS FOR MAGNETO REMY-IGNITION+ We have been looking into the question of controls as made out to your… | ||
| scan 012 | Letter discussing the inter-connection of magneto and battery ignition for airship engines. | ||
| View original record | EH. from E. Copy to BY. X.3199 West Wittering. Oct. 16th 1917. X.3199 X.3191 X.3173 X.2999 X.2814 X.2038 Re - Inter-connection of Magneto and Battery Ignition. E1/W161017. X.2173. X.3199. X.2814. With… | ||
| scan 013 | Implications of replacing the hand magneto with a battery ignition system for aero engines. | ||
| View original record | X.3199 To R. from EH. c. to BJ. " " E. " " By. EH3/LG1/7.10.17 X.3173. - BATTERY IGNITION FOR AERO ENGINES. X 3199 X 2754 When the battery ignition is fitted to the aero engines we take it that the… | ||
| scan 014 | Magneto and battery ignition systems for engine starting and performance. | ||
| View original record | R.R. 233A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. Contd. EH3/LG171017. broken by retarding the lever, this would allow us to strat up after the propeller had been turned round by hand. The extra… | ||
| scan 015 | The interconnection of magneto and battery controls for airship engines. | ||
| View original record | To R. from EH. Copy to BJ. " " E. " " Ey. X.3199. EHL/LC18.10.17. 18th Oct. 1917. X.2038 Re - Inter-connection of Magneto & Battery Controls. X.3173. X.3191. X.3199. X.2020. On the Air-ship engines… | ||
| scan 016 | Cover sheet regarding battery ignition, referencing other documents. | ||
| View original record | X.3199 18.10.17. X.3199 RE BATTERY IGNITION For memos E5/W5917, E4/W27917, and letter of August 21st, 1917, to the Controller, Technical Dept. Air Board Office, see X.3173. EFC. | ||
| scan 017 | Adjustments to the Remy battery ignition's automatic advance range to prevent misfiring on an airship engine. | ||
| View original record | To R. C. to B. " " E. " " By. " " EH. " " EFC. X.3199. Dal/CB27.10.17 2688 X.3191 X.2146.-BATTERY IGNITION (REMY) X.2814. X.3199. With reference to Mr. Hives' memo EH1/LG18.10.17, there is a slight… | ||
| scan 018 | The effects of syringing water onto an engine's distributor and coil during operation. | ||
| View original record | Dal/CE271017. Contd. X.800 We afterwards syringed water on to the distributor several times. This checked the engine speed each time, but it immediately afterwards picked up again. But no effect was… | ||
| scan 019 | From EH detailing Mr. Royce's thoughts on the manufacture of epicyclic gears and battery ignition development. | ||
| View original record | X.3199. X1445 To Wor. from EH. X 3173 EH6/LG301017. 2 30th Oct. 1917.. X3173 Battery Ignition. X 3199- X.1445 When I Was with Mr.Royce the following points were brought up which I consider you should… | ||
| scan 020 | Confirming an instruction to build an experimental ignition coil and outlining further investigation into battery ignition for aero engines. | ||
| View original record | (R.D. 408. 26-4-17.) Bm. 2/158/13. X.3199 EFC7/T.11.17 To EY/HBO. from EFC c. to EY. X.3173 - BATTERY IGNITION FOR AERO ENGINES. X.3445 X.3199 This is to confirm that as arranged in conversation, you… | ||
| scan 021 | Request for the return of a contact breaker from a Delco ignition system for comparison purposes. | ||
| View original record | R.R. 225 B (S80 H) (S.D. 442, 9-5-17) G. 1966. EFC6/T8.11.17. To E. from EFC. X 3199 X-3199 CONTACT BREAKER FOR DELCO IGNITION SYSTEM ON PACKARD CAR. X-2814 If you have done all you want with the… | ||
| scan 022 | Cover memo for a tabular comparison of Remy and Delco ignition systems, with notes on future experiments for a proprietary design. | ||
| View original record | X.3199. EFC1/AT9.11.17 To R. from EFC. C. to E. " " BJ. " " By. " " By/HBO " " Da. " " EH. " " Wor/Mr.Ellis. Re X.3199.-BATTERY IGNITION (GENERAL). X.2814.-REMY IGNITION. Herewith please receive… | ||
| scan 023 | Impracticality of using battery ignition for engines 2100-2600 and recommending sticking with magnetos. | ||
| View original record | To EY. from EH. Copy to Wor. " " EP. " " WD. X3199 EH3/LG29.11.17. 29th Nov. 1917. X3173 Re - ENGINES 2100 TO 2600. X.3173 X.3199 X.2814 We consider it is practically impossible for the R.R. Battery… | ||
| scan 024 | 100 Hour Test for the 'Eagle' engine, specifically regarding the fitting of battery ignition and a new articulated connecting rod pin. | ||
| View original record | To EH. from R. c.c. to BJ X. 3199 R13/W15.1.18. X. 3000 [strikethrough]Parts List[/strikethrough] Re - 100 Hour Test - "Eagle". X. 3173 ✓ X 3199 ✓ Regarding the battery ignition a special effort… | ||
| scan 025 | Surprisingly high efficiency of a Lucas starter motor and arranging a meeting to discuss efficient battery ignition. | ||
| View original record | To EFC. from R. c. to GJ. X.3199 R2/W25.21B . X.3173 RE IGNITION GEAR & ELECTRO MOTORS X.543. X.3161 X.3174. X.3199 X.1698 With reference to the tests you are making on the ignition gear and electro… | ||
| scan 026 | Extract describing the battery ignition system for Liberty engines. | ||
| View original record | X.3199 Extract from EHL/LG15.4.18. RE LIBERTY ENGINES. BATTERY IGNITION X.3199 X.3296. The battery ignition is made up mostly of sheet pressings similar to the Remy pieces, they use a carbon brush on… | ||
| scan 027 | Development of a single coil battery ignition system for the 'Condor' engine. | ||
| View original record | R.R. 526 a (400 T) (S.C. 526. 16-2-18) G. 1545. To EFC. from R. copy to CJ. X.3199. X.3292. RE BATTERY IGNITION. 24th April. 1918. R2/G24418. X.3296 Thank you for your memo EFC3/T20.4.18. re battery… | ||
| scan 028 | Ignition system design and firing timing, comparing the 'Liberty' engine to the 'Condor' engine. | ||
| View original record | contd. -2- 24th April. 1918. ---------------- resistance. We shall, with this arrangement, give up the idea of getting it on the plate under the contact maker, or let it be in an annular ring form,… | ||
| scan 029 | 'Liberty' battery ignition system and potential improvements for a coil design. | ||
| View original record | To EFC. from R. c. to CJ. c. to CY. X.3199. 4th May. 1918. R8/G4.5.18. X.3296 RE "LIBERTY" BATTERY IGNITION. X.3199. X.1819 X3716 X.3081. X.3292. X.3173 X3129 Thanks you for your notes on the… | ||
| scan 030 | Discussion comparing battery and magneto ignition systems and their performance in engines like the 'Falcon' and 'Condor'. | ||
| View original record | Contd. from R. -2- RB/G4.5.18. or a small current running, and large short-circuit current, according to the proportions the ratio of the balance resistance. In fact, it appears to me that the balance… | ||
| scan 031 | Ignition contact breaker proportions and safety settings to prevent engine reversal. | ||
| View original record | To EPC. From R. -2- RB/C4.5.18. Contd. because the secondary current at slow speeds would appear to have enormous energy, owing to the large current at the time of break. Previously we arranged for a… | ||
| scan 032 | Ignition plug failures due to sooty deposits and the potential advantages of a jump spark distributor. | ||
| View original record | To EH. From R. c. to CJ. c. to EFC. X. 3199. 14th May. 1918. R21/C14.5.18. X.2514 RE IGNITION PLUGS. X.2514. X.3199. X.3299. Recently you wrote me on the subject of ignition plugs in which you found… | ||
| scan 033 | The design and performance of a battery ignition distributor, comparing it to Delco schemes. | ||
| View original record | To EFC. from R. c. to CJ. X.3199 30th May. 1918. R18/G30.5.18. X 3173 RE BATTERY IGNITION. X.3129 X.800. X.3173. X.3296 X.3199. X.1520. X.2814 On the distributor sent on 49-GB. I can see a slight sign… | ||
| scan 034 | Ignition systems, back-firing issues, and proposed improvements in collaboration with the Air Board. | ||
| View original record | To EFC. from R. -2- R18/G30.5.18. Contd. All these points were carried out in the R.R. car battery ignition, except that a trembler coil was used, which will not be necessary in all cases where an… | ||
| scan 035 | Issues with battery ignition, including running backwards and wear on platinum points. | ||
| View original record | To EFC. from R. c. to CJ. X3199 12th June 1918. R6/G12618. X.800 X.3199 X 562 X1818 X 3299 X1819 X.3173 - RE BATTERY IGNITION. X.3199 We do not expect the battery ignition to be proof against running… | ||
| scan 036 | From R. to EFC discussing how a Falcon engine could run backwards with specific ignition arrangements. | ||
| View original record | To EFC. from R. -2- R6/G12618. taking an engine like the Falcon which is always started by swinging the propeller, one might, with certain precautions, find out how quickly the engine could be running… | ||
| scan 037 | Examination of the conditions under which an aero engine can run backwards on battery ignition. | ||
| View original record | R R. 285.a (400 T) (S.C. 336 15-2-16) G. 1546. To R. from EFC. c. to CJ. c. to BY. c. to EH. X.3199 EFC10/T22. 7.18. X.3173 X.800 X.3299 X.3199 - RE ENGINE RUNNING BACKWARDS ON BATTERY IGNITION With… | ||
| scan 038 | Analysis of ignition timing, the contact breaker, and the potential for an engine to run backwards. | ||
| View original record | -2- To R. cont. range of 44° advance and retard on the crankshaft, corresponding to 22° ditto on the contact breaker. We will further assume, in the case of the jump spark distributor, that the… | ||
| scan 039 | Page discussing engine ignition behaviour, specifically kick-back, backward running, and spark timing. | ||
| View original record | R.R. 235 A (400 T) (S.C. 520 16-2-16) G. 1546. -3- EFC10/T22.7.18. Contd. had in mind in your R6/G12618. A subsidiary contact breaker such as is fitted to the Liberty Ignition should prevent continued… | ||
| scan 040 | Continued discussion on engine timing, spark advance, and preventing backward running in an engine. | ||
| View original record | R.R. & A (400 T) (S.C. 598 15-2-16) G 1545. -4- EPC10/T22.7.18. Contd. running backwards) to the contact point belonging to a normally later cylinder, but to an earlier cylinder running backwards, in… | ||
| scan 041 | Preventing backward engine running by modifying the distributor and contact breaker. | ||
| View original record | Contd. -5- EFC10/T22.7.18. (2) (b) There seems no possibility in this case of backward running in the fully retard position, as the spark would appear to be very much too early. (2) (m) Likewise the… | ||
| scan 042 | Meeting with the Delco Company regarding battery ignition distributors and a manufacturing proposal. | ||
| View original record | X-3199 To R. from BY. &: to EFC. (struck through) December 6, 1918. BY/7/P61218. X.3129 X.3199 X.3296. X 3199 SCHEME RE BATTERY IGNITION. X.2894 X.3296 X.3173 X 7812 Mr. Kennington of the Delco… | ||
| scan 043 | Discussion with a supplier about manufacturing ignition apparatus, including the reliability of tungsten versus platinum terminals. | ||
| View original record | EY7/P61218. -2- Contd. Ignition apparatus exactly to our drawings, not from the point of view of making money out of it, but based upon the principle that they were very anxious to be able to say they… | ||
| scan 044 | Technical discussion on tungsten oxides in relation to current density and criticisms of ignition break mechanisms. | ||
| View original record | BY7/P61218. -3- Contd. His contention was that if the current density was kept within certain definite limits that the tungsten formed an oxide which was a good conductor and which prevented further… | ||
| scan 045 | The design flaws of a carbon brush mechanism and a disagreement over the need for reinforcement material. | ||
| View original record | BY7/P61218. -4- Contd. carbon brush was not sufficiently strong to withstand this tendency - they had therefore had to fix the brush. In considering this matter after Mr. Kennington had gone, it… | ||
| scan 046 | Visit to the Delco factory regarding experimental battery ignition for the Eagle engine. | ||
| View original record | X.3199 (For sketches see X.3296) Oy - 6 - FMF - 17.4.18. New York, April, 17th 1918. X.3296. REPORT RE VISIT TO DELCO FACTORY THURSDAY. X.3199. April 4th. 1918. I had the privilege of visiting the… | ||
| scan 047 | Comparison between Delco and Remy ignition distributors, with a discussion on carbon contacts versus jump spark systems. | ||
| View original record | Contd. -2- Oy-6-FMF-17.4.18. allowing for the advance and retard positions. X.800. X.1819. The distributor is mounted in a somewhat similar way to the Remy ignition, but the Delco is very much better… | ||
| scan 048 | Analysis of the Liberty distributor, detailing the materials, dimensions, and firing intervals of its contacts. | ||
| View original record | Contd. -3- Oy6/FM/17.4.18. X.3513. Hence the contacts in the Liberty distributor are merely circular brass patches, 3/8" diameter, let into a hard rubber (vulcanite) ring, which is moulded in place in… | ||
| scan 049 | Technical discussion comparing Bakelite and hard rubber distributor materials and issues with charring. | ||
| View original record | Contd. -4- Cy6/FMF17.4.18 point came out. Originally, in their enthusiasm for the Bakelite methods of constructions, they made the whole distributor of Bakelite including the track, and delivered an… | ||
| scan 050 | Notes on the design and performance of the Remy ignition contact breaker, including materials and high-speed limitations. | ||
| View original record | S.S. 165A (100 T) (N) C. 643. 10-2-20) G. 2018 Contd. -5- Oy6/FMF17.4.18. used in the Remy ignition. Pressed sheet rockers are used, made from brass about .032" thick, fitted with hard gray fibre… | ||
| scan 051 | The design of a contact breaker's dual rocker system, its wear characteristics, and the function of an auxiliary rocker to prevent back-firing. | ||
| View original record | Contd. -6- Oy6/FMF17.4.18. Two rockers are employed on each contact breaker, merely as a guarantee of good firing and as a safeguard against, accident. I put it to them that it was doubling the risk… | ||
| scan 052 | Features of Delco contact breakers, generators, brushes, and voltage regulators, comparing them with other systems for aero and automobile engines. | ||
| View original record | Contd. -7- Oy6/RMF17.4.18. (a) it does not rust. (b) it has a rapid. increase of resistance at red heat like iron wire and therefore tends to prevent running down battery if switch left on. This I… | ||
| scan 053 | Delco's dynamos and starting motors, including design choices and issues with early free-wheel models. | ||
| View original record | S.S. 2818 (T.) (S.G. 645, 10-2-20) G. 2818 Contd. -8- Oy6/FMF17.4.18. Delco people are not strictly adhering to the single unit systems, but are also manufacturing separate dynamos and starting motors… | ||
| scan 054 | Continued description of a hardened gear and pressing a ground band into a soft wheel for a free wheel mechanism. | ||
| View original record | Contd. -9- Oy6/FMF17.4.18. a hardened gear. A hardened and ground band is pressed into the soft wheel to form an abutment for the rollers of the free wheel. (Sgd) M.OLLEY. | ||
| scan 055 | Requesting the production of four small ignition condensers for experiments, with a table of specifications. | ||
| View original record | *x3199* To Mr. Coverley. from EFC. EFC6/T12.12.18. X 3199 X 3129 X 2512 X 3129 RE CONDENSERS FOR IGNITION EXPERIMENTS X 3199 Will you kindly have made up with all possible speed, four more small… | ||
| scan 056 | Letter from the Remy Electric Company arranging a meeting and discussing contacts. | ||
| View original record | X. 3199 WALTER H. JOHNSON. SOLE REPRESENTATIVE FOR EUROPE REMY ELECTRIC COMPANY. JONSOMOTE, LONDON. 3644 & 3645 REGENT. A.B.C. CODE 5TH EDITION. YOUR REF. OUR REF. WOK/KG. 14, PANTON STREET, LONDON,… | ||
| scan 057 | Modifying instructions for condensers used in battery ignition, detailing new specifications and capacities. | ||
| View original record | X. 3199. To Mr. Coverley. from EFC. EFC2/T3.1.19. 3rd, January 1919. X. 2512 RE CONDENSERS FOR BATTERY IGNITION X. 3199 X. 3129 Regarding condensers (instructions EFC6/T121218 and modified… | ||
| scan 058 | Meeting with representatives from Delco and Remy regarding 'Liberty' ignition distributors. | ||
| View original record | R.R. 235a (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. X.3199 EFC3/T14.1.19. January 14th 1919. To R. from EFC. c. to HJ. c. to BY. c. to RH. X. 3199 X. 3129. X. 3295. X. 2894 X. 1818 X. 3199 RE BATTERY… | ||
| scan 059 | Proposal from the Delco Company to manufacture ignition apparatus, listing various American cars and aero engines as examples. | ||
| View original record | R.R. 235a (500 T) (S.D. 408. 26-4-17.) Bm. 2/158/13. -2- EFC3/T14.1.19. Contd. All four gentlemen appeared very keen on the original proposition described by Mr. Bailey in his note, namely, that the… | ||
| scan 060 | Report listing various engine types and discussing the sourcing and analysis of ignition points. | ||
| View original record | R.R. 25a (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. -3- EPC3/T14.1.19. Contd. (1) Lorraine Dietrich 12 cylinder (2 rows of 6 cylinders) also 12 " (3 rows of 4 cylinders). (2) Panhard Levassour 16… | ||
| scan 061 | Possibility of custom-making dynamos and a request for an interview with Mr. Royce. | ||
| View original record | R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. Contd. -4- EFC3/T14.1.19. X.294 Regarding dynamos, these gentlemen stated that they would like to do the same for us in this case, i.e. to make up… | ||
| scan 062 | Comparison of performance between trembler and non-trembler ignition systems on an experimental car. | ||
| View original record | X. 3199. To R. from EH. c. to OJ. c. to Bn. c. to E. c. to Da. c. to EP. c. to PN. EH5/LG26.9.19. X.3199 X.3129 X.1520. COMPARISON BETWEEN TREMBLER AND NON_TREMBLER IGNITION. We have arranged the… | ||
| scan 063 | Typed memorandum regarding the deterioration of an ignition system. | ||
| View original record | -2- EH5/LG26.9.19. Contd. whether we can distinguish any deterioration on either ignition. EH. W. H. 214s. 100 T. (S G. 648, 19-2-20) G 2618 | ||
| scan 064 | Sourcing, analysis, and workability of metallic tungsten for high and low tension contacts. | ||
| View original record | To R, from EFC. c. to CJ. c. to E. c. to Bn. c. to Da. c. to EH. X.3199 EFC1/T20.10.19. X.3129 X.3199 X.2894 ✓ X.1818 RE METAL FOR HIGH & LOW TENSION CONTACTS X. 800 X. 3199 X 3129 Referring to Mr.… | ||
| scan 065 | Alternative materials like Nickel and Tantalum for chassis rotors and a plan for further testing. | ||
| View original record | Contd. -2- EFCl/T20.10.19. for a short while and they appear to be at least as good as platinum. Regarding other materials such as Tantalum and Nickel; Tantalum we have not so far been able to obtain… | ||
| scan 066 | Chassis battery ignition experiments, specifically investigating spark length variations. | ||
| View original record | X.3199 To R. from Ck. c. to CJ. c. to E. c. to Hn. c. to Da. c. to RP. c. to Bs. CK3/T20.1.20. X 3716 X.3129 - CHASSIS BATTERY IGNITION X.3199 (A) Loss of Spark Length due to Seconds Variable Gap. (B)… | ||
| scan 067 | Calculated current figures for a coil at 500 R.P.M. | ||
| View original record | Contd. -2- Ck3/T20.1.20. Our calculated figures for the coil at 500 R.P.M. of the contact breaker show that the final current to which the rise of current attains is 2.9 amps, that the current at… | ||
| scan 068 | The loss of spark length in a chassis battery ignition system due to a second variable gap. | ||
| View original record | X. 3129 - CHASSIS BATTERY IGNITION. A. Loss of spark length due to second variable gap using R.R. standard ignition coil and contact breaker. The H.T. lead of an R R. ignition coil was connected to a… | ||
| scan 069 | Article from 'The Motor' magazine describing a new ignition system using a condenser charged by dry cells. | ||
| View original record | X.3199 January 14, 1920. 1119 The Motor NEW IGNITION SYSTEM. Charging a Condenser from Dry Cells, the Discharge being Through an Ordinary Coil. WE have been recently afforded the opportunity of… | ||
| scan 070 | Article about a new ignition system and spherical valve, and a guide to UK car licensing fees and procedures. | ||
| View original record | The Motor 1120 January 14, 1920. NEW IGNITION SYSTEM.—Contd. This ignition does not require the use of costly contacts; it is probable that an alloy of gold and silver would be quite as satisfactory… | ||
| scan 071 | The Terry Ignition System, a battery and condenser system producing efficient sparking with low current consumption. | ||
| View original record | X3199. The Terry Ignition System. Battery and Condenser System Producing Efficient Sparking with Low Current Consumption. ANY interesting inventions are often to be seen at the works of Messrs.… | ||
| scan 072 | Explanation of the 'K' formula for measuring engine capacity and performance, using a bicycle as an initial example. | ||
| View original record | ONE often wonders that the usefulness of the “K” formula, originally given in The Autocar of June 22nd, 1912, in an article by Mr. J. W. Roebuck, Whit. Ex., Roy. Ex., etc., is not more widely… | ||
| scan 073 | Request for two blueprints of tracings of curves in connection with battery ignition. | ||
| View original record | x.3199 To Mr. Clough. from EFC.. 6 Ck1/T4.3.20. X.3199 - WE BATTERY IGNITION Will you kindly supply two blueprints of each of the accompanying tracings of curves in connection with the above, and… | ||
| scan 074 | Tree diagram of battery ignition systems and their corresponding coil numbers. | ||
| View original record | X 3199 29/6/20 TREE OF BATTERY IGNITION AND COIL NUMBERS. Battery Ignition (General) X.3199. R.R.trembler Ignition (Chassis) X.1520. R.R.non-trembler Ignition (chassis) X.3129. R.R.Non-trembler… | ||
| scan 075 | Analysis of the automatic and hand control ignition advance on a Packard 12-cylinder engine, with test results. | ||
| View original record | X 3199 Extract from Hs7/LG25.6.20. X.435. RE PACKARD 12-CYLINDER ENGINE. X.3949 X.3199. X.1819. A point on the Packard engine which we had not realised before is the fact that there is an automatic… | ||
| scan 076 | Ignition timing settings at various RPMs and analysis from bench tests on a Packard car. | ||
| View original record | Contd. -2- Hs7/LG25.6.20. _____________________________________________________________________ R.P.M. Ignition. Point. _____________________________________________________________________… | ||
| scan 077 | Page discussing the need to retard ignition by hand control to prevent engine detonation due to carbon build-up. | ||
| View original record | Contd. -3- Hs7/LG25. 6. 20. necessary to retard the ignition by hand. We also find that when the engine is badly carboned up it is necessary then to retard by means of the Hand Control to avoid… | ||
| scan 078 | Fitting self-starters to earlier cars, discussing the risks of backfires and pre-ignition with different ignition systems. | ||
| View original record | R.R. Ltd (Derby) (ED/26 19-7-17) MP 18.865 X-3199 To Hd. from E. Copy to CJ. " Wor. " Hs. " EP. " Pn. " H. " R.R. of America Inc. (For the attention of Cy.) R4/GRO.8.20. X.5743 X.3538 RE SELF… | ||
| scan 079 | Priming cars to avoid the risk of backfire and the recommendation to fit a self-starter. | ||
| View original record | Contd. -2- There is one satisfaction, however, that in all R.R. cars so far turned out, it is possible to prime them and turn them round without the ignition current being switched on, and afterwards… | ||
| scan 080 | Reprint from 'The Autocar' magazine describing the Conner Battery Ignition System. | ||
| View original record | Reprinted from The Autocar Sept. 25th, 1920. X.3199. THE CONNER BATTERY IGNITION SYSTEM. Two Units designed for Use in Conjunction with the Starting or Lighting Battery of the Car. DURING the last… | ||
| scan 081 | Detailed description of the features, construction, and operation of a special ignition coil. | ||
| View original record | possible faults due to accidental earths. The cam-shaft of the contact breaker can be adapted to any form of drive and be provided either with a shaft coupling, a socket coupling, or with a flange to… | ||
| scan 082 | Reprint from 'The Autocar' magazine describing the Conner Battery Ignition System. | ||
| View original record | X. 3199- Reprinted from The Autocar Sept. 25th, 1920. THE CONNER BATTERY IGNITION SYSTEM. Two Units designed for Use in Conjunction with the Starting or Lighting Battery of the Car. DURING the last… | ||
| scan 083 | Detailed description of an ignition coil, its special features, construction, and operation. | ||
| View original record | possible faults due to accidental earths. The cam-shaft of the contact breaker can be adapted to any form of drive and be provided either with a shaft coupling, a socket coupling, or with a flange to… | ||
| scan 084 | Utility test of a spark-coil or magneto. | ||
| View original record | AR 300 (120B) (SF 349 24-1-19) MP 200552 X 3199 88252 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E1Fe Order No.: 25 Customer's No.: 1 Re.: X 3199 27-XI-1920 Utility test of Spark-Coil or Magneto. X.430 In… | ||
| scan 085 | 'Utility Test' experiment involving electrical resistance. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 88248 ROLLS-ROYCE LIMITED. INSTRUCTIONS. 19 To Order No Customer's No. 2 (Cont'd) Re Utility Test. With primary short-circuited, max-gap = .06". In order to… | ||
| scan 086 | Test results for various electrical coil configurations. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 88249 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No. Customer's No. 3 Re. Utility Test (contd) Two in series in the same way as the RR standard coil, so that… | ||
| scan 087 | Utility test report for a Watford E6 magneto, reference X3199. | ||
| View original record | RR 300 (1208) (SF 349 24-1-19) MP 200552 88255 ROLLS-ROYCE LIMITED. INSTRUCTIONS. 10 - XII - 1920 To: EFC Order No: 28 Customer's No.: 1 Re: X.430 X3199 Utility Test of Magnetos. X3199 A Watford E6… | ||
| scan 088 | Utility test results for magnetos, detailing maximum gap measurements under various coil and primary circuit conditions. | ||
| View original record | RR 300 (f20B) (SF 349 24-1-19) MP 200552 88256 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. 2 Re: Utility Test of Magnetos (condt) doubtless do much better, if the safety gap were… | ||
| scan 089 | Instructions for a utility test of a spark-coil, noting distributor modifications and test conditions. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 88258 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EFC Order No.: 30 Customer's No.: 1 Re: X 3199. Utility list of Spark-coil A further utility test has been taken… | ||
| scan 090 | Winding test of a spark-coil, comparing its performance against a Watford E6 magneto. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 88259 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No. Customer's No. 2 (contd) Re Widing Test- of Spark-coil. the Watford E6 magneto reported 30-XII-20. The… | ||
| scan 091 | The effect of an auxiliary external gap in enhancing sparking at the main gap under adverse conditions. | ||
| View original record | X.3199 To R. from EFC. c. to CJ. c. to E. c. to PN. c. to EP. c. to Da. c. to Hy. c. to EWT. for R.R. Inc. X.3199. - BATTERY IGNITION - GENERAL EFFECT OF AUXILIARY GAP IN ENHANCING SPARKING AT THE… | ||
| scan 092 | Describing the 'Utility' test procedure for spark coils and magnetos. | ||
| View original record | To R. From EFC. c. to CJ. c. to E. c. to PN. c. to By. c. to EP. c. to Da. c. to EWT. for R.R.Inc. X 3199 EFC2/T7.1.21. X.3199 - "UTILITY" TEST OF SPARK COIL OR MAGNETO. V.460 This was referred to in… | ||
| scan 093 | Comparison of magneto and battery ignition systems, discussing trial results and leakage path effects. | ||
| View original record | Contd. -2- EFC2/T7.1.21. negligible. (c) As (b) but both primaries are now short circuited. (d) The secondary of one coil only is connected across the gap and its primary short circuited. Thus we have… | ||
| scan 094 | Comparative sparking test between a Watford E.6 Magneto and a standard battery ignition system on a utility test. | ||
| View original record | X. 2375. X. 3129. 21.12.20. COMPARATIVE SPARKING OF WATFORD E.6 MAGNETO AND R.R. STANDARD BATTERY IGNITION ON UTILITY TEST. | | Maximum spark length (mm) for regular firing on one of six gaps fed in… | ||
| scan 095 | Inquiry into why tungsten points are not durable in a 12-volt ignition system compared to a 6-volt Delco system. | ||
| View original record | X 3199 To EFC. from R. c. to CJ. R2/G26.1.21. X.2894. X.3129. RE TUNGSTEN POINTS. X 3199 It would appear that tungsten points will stand in Delco battery ignition, but not on R.R. Why? Is the primary… | ||
| scan 096 | Issues with U.S.A. electrical ignition equipment and comparing it to Bosch and in-house designs. | ||
| View original record | H.R. 255a (100 T) S.H. 798. 10-17-20: G 2947 X.3199 To Hs. from R. c. to CJ. c. to Wor. R3/G16.2.21. X.4275 - RE U.S.A. ELECTRICAL EQUIPMENT X.2814. X.918. X.3199 With reference to learning something… | ||
| scan 097 | List of questions for Mr. Royce concerning battery ignition systems. | ||
| View original record | X.3199 EFC/T3.3.21. X.3199 - BATTERY IGNITION - GENERAL. Questions re battery ignition to which Mr. Royce requires answers. 1. Why do we have pre-ignitions due to mutual induction on the R.R.… | ||
| scan 098 | Forwarding notes, corrected and added to by Mr. Royce, concerning Mr. Clark's visit to West Wittering. | ||
| View original record | X 3199 To ERC. from E. Copy to C.L. [struck through] O.H. [struck through] A.W. [struck through] D.X. [struck through] E.F.C. [struck through] ORIGINAL. E1/C6/4/21. [STAMPED: APR 1921] RE VISIT OF MR.… | ||
| scan 099 | List of points for attention regarding vehicle electrical systems following a visit by Mr. Clark. | ||
| View original record | To SFC. From E. Copy to GR. AH. RW. EPC. E1/G31/3/21. X.3199 X.294 X.430 RE VISIT OF MR. CLARK TO WEST WITTERING. 28TH FEBRUARY, 1921. We send you herewith list of points which Mr. Royce indicated… | ||
| scan 100 | List of specifications and actions for the development of dynamos and motors for large and small cars. | ||
| View original record | To EFC. from E. -2- E1/G31/3/21 Contd. (g) Modify all the experimental dynamos being dealt with into third brush machines if possible. (h) We want the following models of dynamos for our large and… | ||
| scan 101 | Improvements to a Watford machine and comparing various magneto suppliers. | ||
| View original record | To E.P.C. from E. -3- E1/G31/3/21 Contd. (11) Mr. Royce thinks we shall have to stick to the Watford Company but get them to improve their machine. He thinks the sleeve is a very good device to use,… | ||
| scan 102 | Pre-ignition issues caused by mutual induction in double battery ignition systems. | ||
| View original record | To REG. From R. Copy to CS. HS. X3199 RE BATTERY IGNITION. X918E <3129 X344 It has occurred to me that the reason for pre-ignitions by mutual induction is because we have double ignition and in… | ||
| scan 103 | Pre-ignition problems caused by mutual induction effects from using double ignition systems. | ||
| View original record | X 3199 R.R. 235a (100 T) S.H. 89. 22-7-20) G. 2769 To R. from Hs. c. to CJ. c. to E. Hs10/LG14.4.21. X.3199 X.3129. RE BATTERY IGNITION. It is a fact that the pre-ignitions we have had on our cars due… | ||
| scan 104 | Specifications and effects of braided high tension cable for aero engines used with wireless systems. | ||
| View original record | R.R. 825A. (100) (H) H. Yds. 10-18-20 G. 2947 X 3/99 To En. from EFC. EFC1/T11.5.21 X.2516 - BRAIDED HIGH TENSION CABLE FOR AERO ENGINES IN CONNECTION WITH WIRELESS WORK. X 3/99 I am sorry not to have… | ||
| scan 105 | The second and final page of a memo returning correspondence on a matter concerning cylinders. | ||
| View original record | Contd. -2- EFC1/T11.5.21. both individually and mutually between the cylinders. We return the correspondence on the matter herewith. EFC. | ||
| scan 106 | Letter discussing cost-saving design changes for a distributor and contact breaker. | ||
| View original record | X. 3199. RECEIVED Hs JUN 14 Oy2 - G 25521 May 25, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention: Mr. F.H.Royce. Dear Sir:- Re: Distributor and Contact… | ||
| scan 107 | Technical description of the Rotor, Cam, Condenser, and Advance Mechanism of an ignition system. | ||
| View original record | Oy2 - G 25521 Sheet #2. (2) ROTOR: The rotor is a disc of molded Bakelite having a nickel conductor molded in it or fixed by screws in a recess in it (as in the Bosch). The hole in the distributor for… | ||
| scan 108 | Report comparing design aspects of distributor mechanisms, including drive, bearings, and ventilation. | ||
| View original record | Oy2 - G 25521 Sheet #3. pins engaging with a slotted cross piece on the rotor spindle. The Delco advance might be worth inspection by Mr. Royce, as these people have most experience of any maker in… | ||
| scan 109 | The design, materials, and insulation of a rocker component. | ||
| View original record | (9) ROCKER: The rocker is practically always a steel pressing and almost always is insulated by being mounted on an insulated pin, and having a rubbing contact of insulating material such as Bakelite… | ||
| scan 110 | Hand-drawn sketch detailing the cross-section of a typical American battery ignition distributor and contact breaker. | ||
| View original record | AM. BOSCH H.T. TERMINALS. DESIGNED NOT TO TWIST WIRES. BRASS INSERTS MOLDED BAKELITE ROTOR [A BOSCH] SEALED CONDENSER BAKELISED LINEN BUSH IN ROCKER MICARTA BALL BRG. [BIJUR & DELCO] CAM SET SCREW… | ||
| scan 111 | From Mr. Olley discussing reports on ignition systems, comparing Delco, Bosch, and other American equipment. | ||
| View original record | X3199 Oy3/G1.6.21. June 1st 1921. To: Mr. Belnap, cc. Mr. Nadin. Mr. Bagnall. Mr. Hulley. Mr. Southern. Mr. Caswell. From Mr. Olley. X.4284. Re Mr. Royce's Reports on Ignition. X.3199 X.4275. Mr.… | ||
| scan 112 | Performance and issues of various battery ignition systems, specifically Delco, in comparison to magnetos. | ||
| View original record | Cy3/G16.21. -2- Contd. With the change in commercial conditions, the American Bosch, Bijur and Westinghouse are all out after the quality trade. The American Bosch ignition sent over, however, is not… | ||
| scan 113 | The utility test of a slate slab used to simulate leakage on magneto and battery ignition systems. | ||
| View original record | EFC. AB.2. X3199 2nd June, 1922 X.3199 SLATE SLAB FOR UTILITY TEST. X.430. The slate slab, originally intended for a set of spark gaps, but now arranged with various terminals along its length, has… | ||
| scan 114 | Extract from a report on ignition system leakage and spark gap performance. | ||
| View original record | -2- Extract from a further report. The maximum regulat spark gap obtainable with a leakage of about 1.0 megohm across it was in all cases 2.0 mm. Using the terminals of the slate slab employed for the… | ||
| scan 115 | Test report on slate resistance and its effect on ignition spark gaps for a utility test. | ||
| View original record | X3199 EFC. AB35. X.3199 SLATE LEAK FOR UTILITY TEST. X.430. The slate resistance reported AB.2.6.21, has been arranged with mercury troughs at each end to secure improved contact. Used in this way,… | ||
| scan 116 | Continued page on comparative utility tests for battery and magneto ignition systems, and the difficulty of measuring resistance. | ||
| View original record | -2- Contd. be very suitable for comparative utility tests, on hhe battery ignition if used with the screw terminals, and on magneto ignition if used with the mercury contacts. It does not seem… | ||
| scan 117 | Inquiry about the performance and market resistance of cars fitted with only battery ignition in India. | ||
| View original record | X 3199 Mr. Kirby - Rolls-Royce Depot, Bombay - India. from Hs. Hsl/LGS.8.21. We should like you to let us know, how cars which are fitted only with Battery Ignition, perform in India. We would… | ||
| scan 118 | Letter to Mr. Peat in Australia requesting feedback on cars fitted with battery-only ignition. | ||
| View original record | X. 3199 Mr. Peat - Australia. from Hs. Hsl/LGS. 8. 21. We should like you to let us know, how cars which are fitted only with Battery Ignition, perform in Australia. We would anticipate that… | ||
| scan 119 | Letter discussing magneto ignition issues, spark plug oxidisation, and a proposed solution using a Delco switch. | ||
| View original record | X3199 CC Mr. Belnap. Mr. Nadin. August 4, 1921. OY6-G4821. Dear Hives:- X.699 - RE IGNITION X.430. X.3199 I am trying to catch up with your past letters which have remained unanswered. Your letter… | ||
| scan 120 | Letter discussing the benefits of the Benjamin Klaxon switch over the existing starter button. | ||
| View original record | x 3199 2 FC SEP 18 1921 RECEIVED. CC Mr. Belnap Mr. Nadin Oy5 - G 18821 August 18, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention: Mr. Royce & Works… | ||
| scan 121 | Fire risk and usability of the ignition switch position on the steering column. | ||
| View original record | Oy5 - G 18821 Sheet #2. that it can be unobtrusively mounted on the top of the steer-ing column, the twin cable being led to it up the center of the column. We believe that the position of the switch… | ||
| scan 122 | Forwarding a letter from the representative in India regarding cars fitted only with battery ignition. | ||
| View original record | X3199 To R. from Hs. c.l to CJ. c. to Da. c. to E. c. to BY. c. to Wor. c. to EP. Hs4/LG6.10.21. X3199 GOSHAWK 11. Attached herewith is a copy of a letter we have received from Mr. Kirby, our… | ||
| scan 123 | Report from the Delhi service depot on the market preference for magneto ignition over battery ignition in India. | ||
| View original record | X 3199 ROLLS-ROYCE LTD SERVICE DEPÔT KASHMIRI GATE DELHI. LK10/B15.9.21. X 3199 H.S. DERBY. With reference to your memo HS1/LG8.8.21. I have pleasure in giving you the following facts on battery… | ||
| scan 124 | Arguing against battery-only ignition systems, citing the lack of charging facilities and frequent battery failures. | ||
| View original record | (2) battery in this case is often ruined as it has been forgotten. (8) In a great many Native States there are no facilities for charging batteries. (9) The majority of Rolls - Royce cars that I get… | ||
| scan 125 | Letter advising against battery ignition for cars in Australia, contrasting the conditions with America. | ||
| View original record | To Hs. from Ft. X.3199 Pt14/EP19-9-21. 2 Smail St, Off Bay St, Sydney. I am in receipt of yours Esl/LGS-8-21 re the advisability of fitting battery ignition for cars which may be exported to this… | ||
| scan 126 | Technical report discussing the advantages and disadvantages of magneto versus battery ignition systems. | ||
| View original record | To Hs. from Pt. - 2 - Pt14/HP19-9-21. 2 Small St, Sydney. reputation suffers in consequence. The only point which I can see can be urged against the magneto is perhaps indifferent slow running,… | ||
| scan 127 | Letter discussing reasons for battery failure and proposing alternative starting mechanisms for vehicles. | ||
| View original record | - 3 - To Hs. from Pt. Pt14/HP19-9-21. 2 Smail St, Sydney. purposes, has resulted in an enormous business having been built up in the large cities in the way of battery repairs. The rise of this… | ||
| scan 128 | Invitation from Automotive Products Company to visit their stand at the Motor Exhibition. | ||
| View original record | X. 3199 AUTOMOTIVE PRODUCTS COMPANY SOLE REPRESENTATIVES FOR TIMKEN AXLES MATHER ROAD SPRINGS RUSTON-HORNSBY STAMPINGS & PRESSINGS DETLAFF PLATE CLUTCHES WARREN GEAR BOXES PHILBRIN COIL IGNITION… | ||
| scan 129 | Investigation into engine starting difficulties in cold weather and a request for a new battery. | ||
| View original record | To Hs. from R. c. to OJ. c. to PN. c. to EFC. c. to EF. c. to Hm. c. to R.R. of America Inc. (For attention of CY). x3199 R3/C15.11.21. X.4217. RE STARTING. X.3619. X.3199. X.430. Regarding starting,… | ||
| scan 130 | Continued report on the ignition efficiency of a small pump engine, comparing magneto and battery systems. | ||
| View original record | Contd. -2- R3/G15.11.21. With regard to the efficiency of ignition while starting, the small pump engine here has its ignition plug in a position which gets coated with the ingoing petrol, and when… | ||
| scan 131 | List of effects to be considered for battery ignition systems. | ||
| View original record | X. 3199 17.1.22 BATTERY IGNITION SYSTEMS. EFFECTS TO BE CONSIDERED. (1) Eddy current loss in primary circuit. (2) Capacity in secondary circuit. (3) Leak across secondary circuit. | ||
| scan 132 | Technical description and performance analysis of an annular spark gap. | ||
| View original record | X3199 26th Jan. 1922. EFC. AB.37. X.3199 X.2065. ANNULAR SPARK GAP. This consists of a steel cone forming one electrode, arranged concentrically in a brass ring forming the other. The object is to… | ||
| scan 133 | Report page detailing issues with obtaining regular sparking and the unsuitability of a specific spark gap for general use. | ||
| View original record | -2- Contd. 2.0 mm and sometimes the sparks appear much more purple. The difficulty in obtaining regular sparking may be due to slight roughness of the surface of the electrodes. Perfect smoothness… | ||
| scan 134 | Outlining the requirements for a battery ignition system on the Goshawk engine. | ||
| View original record | TO E.C. from R. x3199 R6/14.2.22. c. to W. c. to Or. c. to Hy. ✓ c. to HS. c. to W. c. to Mr. Brock. X3480 RE BATTERY IGNITION. x3199 (1) Our battery ignition must be quite safe to run the engine up… | ||
| scan 135 | Analysis of the Delage car's ignition system, comparing magneto and battery ignition options. | ||
| View original record | x3199 Extract from:- R1/M26.6.22. x3199 x430 RE DELAGE CAR. (1) If this is a specimen of Delage effort to cutout R.R. it is not a bit like R.R. (2) Double spark magnetos which naturally require double… | ||
| scan 136 | Philbrin battery ignition system and an attached pamphlet. | ||
| View original record | To C. & W. from EFC. <3199> EFC5/T8.11.22. X.3199 - RE PHILBRIN BATTERY IGNITION Please find attached pamphlet dealing with the Philbrin coil ignition which I think might be of interest to you, the… | ||
| scan 137 | Brochure for Philbrin coil ignition systems detailing available types, prices, and the sole concessionnaires. | ||
| View original record | TRIPLEX SWITCH.—For certain special purposes when the maximum power and reliability are required, e.g., for racing and competition work, special “Triplex Double” sets are supplied, containing a… | ||
| scan 138 | Technical overview of the Philbrin Coil Ignition system, detailing its components, features, and operation. | ||
| View original record | Philbrin Coil Ignition THE "Philbrin" Apparatus represents the very latest in coil ignition construction, and has the following special features:— - Single or high-frequency spark at will. -… | ||
| scan 139 | Family tree diagram of battery ignition and coil part numbers. | ||
| View original record | X.3199 - TREE OF BATTERY IGNITION AND COIL NUMBERS Battery ignition (general) X.3199. R.R. trembler Ignition (chassis) X.1520. R.R. non-trembler Ignition (chassis) X.3129. R.R. non-trembler Ignition… | ||
| scan 140 | Series of design suggestions for the Goshawk and other battery ignition systems to mitigate H.T. losses. | ||
| View original record | Handwritten: X3199 Handwritten: X4275 Handwritten: X4079 To EFC. from R. c. to CJ. Wor. PN. c. to BY. Hs. EP. R1/M13.11.22. X.3199 - RE GOSHAWK AND OTHER BATTERY IGNITIONS. The phenomenon found in the… | ||
| scan 141 | Letter discussing testing condenser materials, coil construction modifications, and issues with ignition at slow speeds. | ||
| View original record | Contd. -2- RL/M13.11.22. the virtues suggested in paras. 2, 3, & 4. (7) Can you test a number of suitable materials probably with a high alternating electromotive force perhaps made into a condenser… | ||
| scan 142 | Coil performance, testing methods, and standardisation for the Goshawk engine. | ||
| View original record | Contd. -3- R/M3.11.22. through the side of a present defective Elo case, as it may be that we are experiencing a loss of energy by direct leakage as well as by other dielectric actions, as we have a… | ||
| scan 143 | Trial report on a standard test gap for magnetos and coil ignition systems. | ||
| View original record | X3199 EFC. PB.80. Feb 8th 1923. TRIAL OF STANDARD TEST GAP ON MAGNETOS AND COIL IGNITION. For the purposes of this gap, a third point spark gap was used, and adjusted so that regular sparking would… | ||
| scan 144 | Experimental work testing the effect of an external gap on magneto and coil sparking performance. | ||
| View original record | -2- Contd. It appears that with the leak at its present value, the test is reasonable for the magneto, and also for the coil on 12 volts, but rather severe for the coil on 8 volts. During some… | ||
| scan 145 | Tests on a chemical leak for a standard gap, analyzing the variation of its conductance with temperature. | ||
| View original record | EFC. PB.83. March 8th 1923. X.430. CHEMICAL LEAK FOR STANDARD GAP. X.3199. During some tests on coils, in which the chemical leak was used, it was observed that under certain conditions of speed,… | ||
| scan 146 | The conductance of a chemical leak, detailing measurements at various temperatures. | ||
| View original record | EFC. PB.85. March 14th. 1923. X.430. X.3199 CHEMICAL LEAK. The conductance of this leak in its new form is much too high, being about 257.0 micromhos at a temperature of 18.0OC. It has, however, been… | ||
| scan 147 | American battery ignition systems, discussing power consumption, components, materials, and comparison to magnetos. | ||
| View original record | To EFC ) from R. c. E. c. to CJ. RG. c. to HS. DA. BY. X3199 R2/M3.4.24. BATTERY IGNITION. X.3199 X.918. Mr. Olley tells me "that American battery ignitions take 1 1/4 amps. @ 6 volts = 7 1/2 watts… | ||
| scan 148 | Short lifespan of platinum points in the electrical system and suggesting design improvements. | ||
| View original record | To EFC. from R. c. to C.J. Hs. By____ RE CAR IN FRANCE. X.4652/4. X.8780. X.8680. X.3199 I hear that the platinum points are not lasting well on the above car. Unless this can be accounted for it is… | ||
| scan 149 | Mr. Royce's remarks on corrosion and H.T. tracking issues in EAC battery ignition distributor mouldings. | ||
| View original record | To Mr. [REDACTED]. FROM E. Copy to - OI. [REDACTED] HS. X3199 EAC. BATTERY IGNITION DISTRIBUTOR. The 2 sample distributor mouldings shewing H.T. tracking have been duly received and examined. It was… | ||
| scan 150 | Electrical troubles regarding magneto platinum points and battery ignition points. | ||
| View original record | To EFC. from Hm/NRC. X3199 In reply to your query re electrical troubles :- (1) Magneto Platinum Points. With regard to the E.O.6. magnetos fitted to all post-war 40/50 HP. cars, these are very little… | ||
| scan 151 | Report concerning the usage of high tension distributor points and dynamo brushes for the 20 HP model. | ||
| View original record | -2- X.5790. (3) With regard to the high tension distributor points on the 20 HP. when running magneto. We cannot give much from experience, because as pointed out above, the magneto on the 20. is not… | ||
| scan 152 | Responding to a query on the electrical system's capacity and dynamo output for a 20 HP car, GLK-46. | ||
| View original record | W/S. To HO. from EFC. X3199 EFC3/T28.6.27. 20 HP. CAR GLK-46 (LORD DAWSON OF BENN) X5783 X5780 X3199 Your HO6/EBN27.6.27 has been handed to the undersigned. Answering your query in regard to the… | ||
| scan 153 | Letter to The Lucas Electrical Co. discussing the reasons for the continued manufacture of battery ignition systems. | ||
| View original record | X3199 EFC2/T. 26th June, 1927. Dr. Turner, Messrs. The Lucas Electrical Co., Well Street, Birmingham. X3199 X4652 Dear Dr. Turner, The other day we had a conversation with a representative of Messrs.… | ||
| scan 154 | Page 2 of a letter discussing experiments and issues with battery ignition systems and dynamo armatures. | ||
| View original record | 43 -2- Contd. Such was not the case in our old type of steering column switch, the position of which was not readily noticed to be wrong. It occurs to us that another a reason for the non-continuance… | ||
| scan 155 | Letter from Joseph Lucas Research Laboratories discussing investigations into battery and coil ignition systems. | ||
| View original record | X3199 TRADE MARK THE JOSEPH LUCAS RESEARCH LABORATORIES WELL STREET BIRMINGHAM TELEGRAMS "LUCAS, BIRMINGHAM" TELEPHONE NORTHERN 2201 (PRIVATE) WHEN REPLYING PLEASE REFER TO EOT/6. E. Fowler Clark,… | ||
| scan 156 | Letter from Joseph Lucas Ltd. discussing developments in battery ignition systems and quiet running dynamos. | ||
| View original record | F/L JOSEPH LUCAS LTD., PAGE 2. DATE 1.7.27. To E. Fowler Clark, Esq., Messrs. Rolls-Royce Ltd., DERBY. favourite is that being a self-contained unit it is inherently more reliable than a system which,… | ||
| scan 157 | Letter to Joseph Lucas Ltd. concerning battery ignition system contact points and the 'make' vs 'break' period. | ||
| View original record | X3199 EFC1/T. 6th July, 1927. Dr. E.O. Turner, Messrs. Joseph Lucas Ltd., Great King Street, Birmingham. Dear Dr. Turner, We thank you for yours of the 1st. inst. ref. EOT/6. We were interested to… | ||
| scan 158 | Article on recent developments and requirements for aircraft ignition-systems. | ||
| View original record | Vol. XXI X3199 July, 1927 No 1 Recent Developments in Aircraft Ignition-Systems By F. G. SHOEMAKER¹ CHICAGO SECTION PAPER Illustrated with DIAGRAMS AND PHOTOGRAPHS ABSTRACT THE fundamental electrical… | ||
| scan 159 | Page discussing headlighting performance on wet roads and the development of transcontinental highways. | ||
| View original record | Vol. XXI July, 1927 No. 1 27 WET ROADS AND HEADLIGHTING curb due to the wet road as well as the increased glare. Photometric measurements on both asphalt and concrete roads, made by Mr. Porter to show… | ||
| scan 160 | Paper on recent aircraft-ignition developments, discussing design and electrical requirements. | ||
| View original record | Vol. XXI July, 1927 No. 1 RECENT AIRCRAFT-IGNITION DEVELOPMENTS 29 it does not add to the structural strength of the airplane. Compactness is important, for it usually means simplicity as well as… | ||
| scan 161 | Journal page discussing ignition systems, insulation for supercharged engines, and radio shielding. | ||
| View original record | Vol. XXI July, 1927 No. 1 30 THE JOURNAL OF THE SOCIETY OF AUTOMOTIVE ENGINEERS circuit is again closed, there is a residual voltage in the primary winding which affects the next succeeding spark.… | ||
| scan 162 | Recent developments in aircraft ignition systems and radio-shielding principles. | ||
| View original record | Vol. XXI July, 1927 No. 1 RECENT AIRCRAFT-IGNITION DEVELOPMENTS 31 FIG. 1—DIAGRAMMATIC ILLUSTRATION OF RADIO-SHIELDING PRINCIPLE As the Potential a, a Source of Electrical Radiation, Varies, the… | ||
| scan 163 | Investigation into fire hazards from airplane ignition systems and the development of fire-proofing methods for magnetos. | ||
| View original record | Vol. XXI July, 1927 No. 1 32 THE JOURNAL OF THE SOCIETY OF AUTOMOTIVE ENGINEERS the generator, must be shielded, and all brace wires must be carefully bonded together to prevent interference. This is… | ||
| scan 164 | Page from a publication discussing recent developments in aircraft engine ignition systems, including double magnetos and spark plug terminals. | ||
| View original record | Vol. XXI July, 1927 No. 1 RECENT AIRCRAFT-IGNITION DEVELOPMENTS 33 requires no special tools for its operation, even in inaccessible locations in the V of the engine. The construction and method of… | ||
| scan 165 | Page from a journal detailing Splitdorf and Scintilla double magnetos for aircraft engines. | ||
| View original record | Vol. XXI July, 1927 No. 1 34 THE JOURNAL OF THE SOCIETY OF AUTOMOTIVE ENGINEERS FIG. 7—SPLITDORF MODEL-VA DOUBLE MAGNETO DESIGNED ESPECIALLY FOR AIRCRAFT ENGINES This Provides Two Electrically… | ||
| scan 166 | Recent developments in aircraft ignition systems and high-speed breaker mechanisms. | ||
| View original record | Vol. XXI July, 1927 No. 1 RECENT AIRCRAFT-IGNITION DEVELOPMENTS 35 (8) Both bearings supported in insulated cages (9) Breaker assembly, or individual breakers, easily removable The first Splitdorf… | ||
| scan 167 | Page from an engineering journal discussing the development and timing method for a pivotless breaker in high-speed engines. | ||
| View original record | Vol. XXI July, 1927 No. 1 36 THE JOURNAL OF THE SOCIETY OF AUTOMOTIVE ENGINEERS Fig. 11—Method of “Timing” Contact Separation in Pivotless Breaker A Straight-Edge Is Laid across the End of the Cam… | ||
| scan 168 | Technical bulletin on recent aircraft ignition developments, focusing on magnetos and the Liberty-12 Delco ignition-distributor. | ||
| View original record | Vol. XXI July, 1927 No. 1 RECENT AIRCRAFT-IGNITION DEVELOPMENTS 37 any adjustment whatever and were apparently good for at least 500 hr. more before an adjustment would be necessary to correct the… | ||
| scan 169 | Page from an automotive engineering journal comparing battery versus magneto ignition systems, and detailing distributor designs. | ||
| View original record | Vol. XXI July, 1927 No. 1 38 THE JOURNAL OF THE SOCIETY OF AUTOMOTIVE ENGINEERS vacuum-drying at 250 deg. fahr. and revarnishing the exterior (3) Upper rotor-shaft bearing replaced with new bearing… | ||
| scan 170 | Recent aircraft ignition developments, including weight comparisons of various systems and specifications for an ideal system. | ||
| View original record | Vol. XXI July, 1927 No. 1 RECENT AIRCRAFT-IGNITION DEVELOPMENTS 39 the generator capacity, it may be pointed out that, for the largest generator now in service, which has 50-amp. WEIGHT OF IGNITION… | ||
| scan 171 | Page from The Journal of the Society of Automotive Engineers discussing ignition systems and foremanship courses. | ||
| View original record | Vol. XXI THE JOURNAL OF THE SOCIETY OF AUTOMOTIVE ENGINEERS July, 1927 No. 1 40 (10) Accessibility in the airplane for inspection of breaker and distributor (11) Easily removable and interchangeable… | ||
| scan 172 | Quoting a letter from Mr. Olley regarding the performance of ignition coils, with and without ballast resistance. | ||
| View original record | To R. from EFC. c.c. BJ. X3199 EFC3/T9.11.27. RE IGNITION. X3129 I have received a letter from Mr. Olley from which I quote the following three paragraphs :- "With regard to coils, we find that the… | ||
| scan 173 | Improvements to a battery ignition system, including contacts, distributor, and coil construction. | ||
| View original record | X.3199 R2/M9.12.27. EFC. FROM R. C. to BY. HS. BATTERY IGNITION. Although the minor improvements after the scrubbing contacts are not of very great importance, they would appear to be of the order of… | ||
| scan 174 | Current experiments on ignition system components including ballast resistance, coils, condensers, contact breakers, distributors, and magnetos. | ||
| View original record | X 3199 6.3.28. IGNITION SECTION CURRENT EXPERIMENTS. Ballast Resistance. Volt-ampere characteristic of double ballast. Coil. General, temperature and high frequency load tests of special coils as… | ||
| scan 175 | Continued document outlining comparative tests on High Tension (H.T.) wiring for chassis and aero applications. | ||
| View original record | -2- Contd. H.T. Wiring. Chassis. Comparative bench and chassis tests of Maconits, super-Glover, Gloverite and Helsby cables. Aero. Bench test comparison of new Glover, Helsby and Henley braided cables… | ||
| scan 176 | Extract from H.E. West's report on the 1929 Motor Show at Olympia, detailing a dual ignition device from S.E.V. Co. | ||
| View original record | X3199 21.10.29. MOTOR SHOW OLYMPIA 1929. X430 Extract from H.E.West's report WD.85. The S.E.V. Co. exhibit a dual ignition device incorporating a rotating magnet, magneto and battery ignition set.… | ||
| scan 177 | Family tree diagram of battery ignition and coil part numbers. | ||
| View original record | X3199. X.3199 - TREE OF BATTERY IGNITION AND COIL NUMBERS Battery ignition (general) X.3199. R.R. trembler ignition (chassis) X.1520 R.R. non-trembler ignition (chassis) X.3129. R.R.non-trembler… | ||
| scan 178 | Letter from W. D. Foster & Co. regarding a new ALCO Combined Magneto and Battery Ignition Unit. | ||
| View original record | X8199. Telephone and Telegraph: MUSEUM 4507 LONDON MUSEUM 3213 LONDON Cables: FOSTERBOSC, LONDON W. D. FOSTER & CO. (PROP.: W. D. FOSTER) SOLE REPRESENTATIVES FOR THE British Isles FOR AMERICAN BOSCH… | ||
| scan 179 | Business letter from W. D. Foster & Co. discussing aeroplane magneto failures and proposing a new instrument. | ||
| View original record | W. D. FOSTER & CO. Continuation Sheet No. 2. Messrs. Rolls Royce, Ltd. experienced this failure. With the ordinary type of Magneto on an Aeroplane, if any Insulator Part burns out, the engine has to… | ||
| scan 180 | Product specification sheet for the S.E.V. 'ALCO' ignition apparatus. | ||
| View original record | N° 624-A. THE S.E.V. “ALCO” the highest ignition apparatus and the most complete It is both : a S.E.V. Allumo (battery ignition) and a S.E.V. Cobalto (rotary cobalt steel magnet magneto) S.E.V. ALCO… | ||
| scan 181 | Dimensional drawing for an ALCO distributor for 4 and 6 cylinder engines. | ||
| View original record | OVERALL DIMENSIONS of the ALCO for 4 and 6 cylinders Total length { with resistance: c¹, without resistance: c } Taper driving end Kind of fixing system { 2 smooth holes, depth V } Parallel driving… | ||
| scan 182 | Letter to Messrs. W.D. Foster & Co. declining interest in the ALCO Combined Magneto and Battery Ignition Unit. | ||
| View original record | X3199 EFCL/AD. 18th February, 1930. Messrs. W.D. Foster & Co. 24 & 26 Hampstead Road, London, N.W.1. Dear Sirs, We thank you for your letter reference WDF.ES. of the 17th inst. dealing with the ALCO… | ||
| scan 183 | Design and potential benefits of the 'Mallory' battery igniter. | ||
| View original record | Btn-6 To Mr Hives X3199 June 25, 1930. [STAMP: RECEIVED JUL 14 1930] To: Mr. Olley From: Mr. Burton BATTERY IGNITION Are you acquainted with the "Mallory" Igniter? I understand Packard are… | ||
| scan 184 | Requesting a Mallory igniter for comparative laboratory testing. | ||
| View original record | X3199. To Oy. from EFC. EFC1/BE23.7.30. MALLORY IGNITER Referring to Mr. Burton's note to you of 25.6.30. which has been passed on to us, we consider it would be of interest to have one of these… | ||
| scan 185 | Battery ignition sparking plug voltage tests carried out on 20/25 and 40/50 chassis. | ||
| View original record | E7C. X3199 Date 5-12-30 Ref No. WE63 X.NOS 5970, 8970, 5680, 7680, 8712. Battery ignition sparking plug voltage tests on 20/25 and 40/50 chassis We have carried out a series of road tests on the… | ||
| scan 186 | Test report on sparking plug performance on experimental Phantom II and production 20/25 chassis. | ||
| View original record | W.E. 63 (2) Contd. on experimental Phantom II chassis 19EX with standard compression ratio 4.6 to 1 and with the sparking plug gaps set at .025" and at .030" (.025" standard setting), also with… | ||
| scan 187 | Test results comparing plug voltage at different plug gaps and water temperatures. | ||
| View original record | W863 contd (3) 4 7800 5 6200 6 5920. Average max voltage per plug 6015. b) Plug gaps .025" Water temp' 95 to 100°C Cylinder No. Plug voltage 1 5300 3 6020 6 4700 c) Plug gaps .030" Water temp' 70°C… | ||
| scan 188 | Test results for sparking plug voltages on a 20/25 HP chassis at different plug gaps. | ||
| View original record | (4) very hot there is a voltage reduction of about 15%. 20/25 HP Chassis. a) Plug gaps .020" Water temp. 70°C Cylinder No. Plug voltage 1 5920 2 6020 3 7200 4 6600 5 6300 6 5920 Average max. voltage… | ||
| scan 189 | Ignition coil performance, voltage output, and spark plug gap settings for battery ignition engines. | ||
| View original record | WE63 (5) Contd should be the normal plug setting for our engines on battery ignition but with this plug gap the conditions would be so severe such that in certain circumstances our ignition coil would… | ||
| scan 190 | Recommendation to experiment with a higher voltage ignition coil to address engine missing issues on various chassis. | ||
| View original record | (6) the fact of the plug voltage being reduced due to the plug electrode temperature also being high. On both 19EX and the 20/25 HP missing occurred on the pick up with '.030' gaps, being worse on the… | ||
| scan 191 | Arranging for a visit to Cricklewood to improve electrical fault diagnosis procedures. | ||
| View original record | Y3199 Wor. from Hs. c. Ry. Hsl/AD18.5.31. X8783 X2199 With reference to the attached report, we are arranging that West shall visit Cricklewood and go over with them the correct methods of diagnosing… | ||
| scan 192 | Ignition faults on customer chassis and the issue of non-faulty components being returned for repair. | ||
| View original record | X3199 Wor. from Hs/LSW. c. Hy. c. Bft/Mr. Brock. Hs/HSWl/AD18.5.31. X8783 X3199 IGNITION FAULTS ON CUSTOMERS CHASSIS. When a customer's car reported with ignition trouble is examined by our Repair… | ||
| scan 193 | Instructing repair depots on the preliminary checks to perform for ignition troubles before removing units. | ||
| View original record | Hs/HEW/ADL 8.5.31 contd. -2- We should like our repair depots, before removing units in a case of ignition trouble on customers chassis, to first verify the correct setting and condition of plugs and… | ||
| scan 194 | New procedure for diagnosing battery ignition troubles on customer chassis, particularly for the 20/25 HP model. | ||
| View original record | X3199 W/S. H. from Hs/HEW. Hs/HEW/WGL.20.5.31. RE : BATTERY IGNITION TROUBLES ON CUSTOMERS CHASSIS. X.3199 X.8783. With reference to our conversation of this afternoon with your Mr. Davis re ignition… | ||
| scan 195 | Battery ignition troubles and the possibility of issuing volt meters to engineers and testers. | ||
| View original record | X3199 X8783. X3199. S/W (Hs/HEW) H10/H23.5.31. RECEIVED 1931 MAY 27 Battery Ignition Troubles on Customers chassis. ----- Thank you for your HS/HEW/WG1.20.5.31. - the only comment we have to make is… | ||
| scan 196 | New suggested method for diagnosing battery ignition troubles on customer chassis. | ||
| View original record | X3199. Hd. from Hs/HEW. c. Hy. Hs/HEW4/AD23.5.31. X3199 X8783 RE : BATTERY IGNITION TROUBLES ON CUSTOMERS CHASSIS. We are sending you herewith copy of the suggested method of diagnosing ignition… | ||
| scan 197 | Suggested procedure for tracing ignition troubles on a customer's chassis. | ||
| View original record | SUGGESTED PROCEDURE TO ADOPT IN TRACING IGNITION TROUBLES ON CUSTOMERS CHASSIS. Before removing any units proceed as follows :- (a) In the case of the 20/25, test the high tension wiring and… | ||
| scan 198 | Visit to Cricklewood to resolve misunderstandings regarding the diagnosis of faulty electrical ignition components. | ||
| View original record | Wor. from Hs/HLW. c. Hy. c. Brt/Mr.Brock. c. Hs/GWH. X3199. Hs/HEW6/AD23.5.31. X3199 X8782. VISIT TO CRICKLEWOOD. We visited Cricklewood on the 20th and 21st inst. and were enabled to clear up several… | ||
| scan 199 | Continued discussion on customer complaints regarding a starter, switchbox repairs, and ignition failures. | ||
| View original record | Hs/H&W6/AD23.5.31. contd. -2- The complaint of the starter on 34-XJ was gone into and has been reported to Ry. and Wor. The question of N. repairing switchboxes has been gone into with Ry. and he has… | ||
| scan 200 | Confirming the provision of a free set of H.T. spark gaps and an old 20 HP battery ignition distributor to a Mr. Kemp. | ||
| View original record | X3199. D/BP. from Hs/HEW. Hs/HEW1/AD2.6.31 We are handing to Mr. Kemp of N. a set of H.T. spark gaps and an old 20 HP. battery ignition distributor to enable them to set up a small ignition testing… | ||
| scan 201 | Visit to Messrs. Lucas to discuss technical collaboration, testing facilities, and components. | ||
| View original record | X3199 Wor. from Hs/HEW. c. Ry. Hs/HEWl/AD5.6.31. X3199 X3374 VISIT TO MESSRS. LUCAS. By/RD. and myself visited Messrs. Lucas on Wednesday last to discuss several points with their technical… | ||
| scan 202 | The design and performance of horns, battery ignition, headlamps, and windscreen wipers. | ||
| View original record | Hs/HEW/AD5.6.31. contd. -2- that samples of each of these horns shall be sent to us for trial. They considered that our horn should be placed outside the bonnet and we are inclined to agree with them… | ||
| scan 203 | Re-arranged proportions for a Battery Ignition H.T. Rotor Drive to facilitate production. | ||
| View original record | X3199 BY. FROM E. E1/M8.6.31. C. to SG. WOR. HS. BATTERY IGNITION H.T. ROTOR DRIVE. We send herewith LeC. 2917. shewing the re-arranged proportions for the above which we think will facilitate the… | ||
| scan 204 | Letter to the British Thomson-Houston Co. Ltd. regarding the ignition system of a Daimler double six. | ||
| View original record | X3199 Hs/HEW2/AD. August 18th, 1931. The British Thomson-Houston Co.Ltd. Lower Ford St, Coventry. For the attention of Mr. Vinsen. Dear Sirs, Thank you very much much for your kindness in getting us… | ||
| scan 205 | Design modification for the Peregrine engine's battery ignition system. | ||
| View original record | X3199. BY. FROM E. E3/M12.1.32. C. to SG. HS. PEREGRINE - BATTERY IGNITION. We send you herewith Lec.2990. shewing the distribution to design Lec.2987. mounted on the engine. It will be noticed that… | ||
| scan 206 | Causes and potential remedies for ignition missing fire at slow speed. | ||
| View original record | HS/WST. E.) FROM R. X3199 BY. DA.} (At Le Canadel.) C. to SG. WOR. PN. R1/W4.4.32. 2 Sent from WW. 16.4.32 X.3199 CAR BATTERY IGNITION. The missing fire at slow speed must be cured, by firstly finding… | ||
| scan 207 | Potential advantages of a suction-operated ignition control switch for cars and aircraft. | ||
| View original record | S/W X3199. WST To Hs/Wst. from F.C Copy to Wor. F10/JL.20.9.32. SUCTION-OPERATED IGNITION CONTROL SWITCH. The attached paper has been sent in to us. Do you think there would be any advantage in… | ||
| scan 208 | Advertising leaflet for the UTEX Ignition Switch, a safety device for vehicles. | ||
| View original record | How often do you read this in your Papers? Newspaper Clipping: TWO DEAD IN BLAZING CAR FIRE FOLLOWS SMASH A man and his wife were burnt to death near here to-day when their car crashed into a ditch by… | ||
| scan 209 | Advertisement leaflet for a UTEX suction-operated ignition switch, detailing its benefits and installation. | ||
| View original record | WHY RUN THE RISK OF RUINED BATTERIES AND BURNT OUT IGNITION COILS — LET UTEX PROTECT THEM! HAVE YOU EVER DONE THIS? If You Haven't, You Might! Have you ever jumped into your car first thing in the… | ||
| scan 210 | Arguing against the fitting of a suction-operated ignition control switch, citing modern alternatives and increased unreliability. | ||
| View original record | X2199 F. from Hs/Wst. C. to Wor. Hs/Wst.10/KT. 21.9.32. SUCTION-OPERATED IGNITION CONTROL SWITCH. We thank you for your FIO/JL. 20.9.32, and the attached leaflet describing the above. We do not think… | ||
| scan 211 | Advantages of implementing an automatic ignition advance and retard system. | ||
| View original record | X.3949 To R. from Hs. c. to CJ. c. to Bn. c. to E. c. to Da. Hs2/LG28.2.20. X.3749. AUTOMATIC IGNITION ADVANCE. X.699. X.435. In considering a new car, we think we should gain some definite advantage… | ||
| scan 212 | Implementation of automatic ignition advance, its advantages over hand control, and a proposal for testing ignition timing. | ||
| View original record | To Hs. from R. Copy to CJ. " " Bn. X.3949 R18/G1.3.20. X.3949. RE AUTOMATIC IGNITION ADVANCE. X.3883. X.699. I am in receipt of your memo (Hs2/LG28.2.20.) with reference to automatic ignition advance,… | ||
| scan 213 | Continued page of a report discussing information gathering from testing minimum to maximum speeds. | ||
| View original record | H.R. 355a (800 T) (S F. 651. 22-5-19) G. 2376 Contd. -2- R18/G1.3.20. the minimum speed to the maximum speed would give us about the information we wish for. R. | ||
| scan 214 | Article from 'The Motor' magazine about a new S.E.V. automatic advance magneto. | ||
| View original record | The Motor | 118 | February 18, 1920. Handwritten: X 3949 NEW MAGNETO WITH AUTOMATIC ADVANCE. A French Design Embodying a Simple Self-timing Device. THE S.E.V. electrical productions have an excellent… | ||
| scan 215 | New worm gear record and a discussion on the economic considerations for automobile engineers. | ||
| View original record | February 18, 1920. 117 The Motor NEW WORM GEAR RECORD.—Contd. Worm wheels, like worms, are cut by a generating process. This is performed by means of a hob which resembles a finished worm, except that… | ||
| scan 216 | Special ignition coil tests and requesting optimal ignition advance settings for various engine speeds. | ||
| View original record | X 3949 To EFC. from R. Copy to CJ. " Bn. " Hs. R3/G20.4.20. RE SPECIAL IGNITION COILS - X.3775.EFC2/T13.4.20. X.3949. I read the result of your tests of the coil with much interest. You will remember… | ||
| scan 217 | Test results and specifications for a Packard 12-cylinder engine. | ||
| View original record | X3949 To R. from Hs. c. to CJ. c. to Bn. c. to E. c. to Da. Hs7/LG25.6.20. X.435. RE PACKARD 12-CYLINDER ENGINE. X3949 We have been running the Packard 12-cylinder engine on the Test Bed. We found it… | ||
| scan 218 | Engine power testing through various gears and observations on a Packard engine's ignition advance. | ||
| View original record | Contd. -2- Hs7/LG25.6.20. Whilst we were testing this engine on the Bench as the gearbox was fitted, we tried the HP. on the various gears with the idea of ascertaining what loss there was when… | ||
| scan 219 | Test report on engine spark timing at different speeds, with a table of ignition points versus RPM and comparison to a Packard car. | ||
| View original record | Contd. -3- Hs7/LG25.6.20. long as they have sufficiently long contact to avoid the spark jumping. We have taken a test with the automatic advance on the engine to see at what point the spark occurs at… | ||
| scan 220 | Notes on ignition timing settings, Packard clutch specifications, and engine performance from bench tests. | ||
| View original record | Contd. -4- Hs7/LG25.8.20. lever is fully advanced the spark takes place 8° B.T.D.C. We found on the Bench Test that this setting of the ignition gave us the best results. It was, however, necessary to… | ||
| scan 221 | Requesting information on optimal ignition advance settings for various engine speeds to prevent backfiring. | ||
| View original record | X 3949 To Hs. from EFC. EFC6/T22.9.20. X.3775 - SPECIAL IGNITION COILS. X 3949 I would like to draw your attention to the paragraph in M3/G20.4.20 addressed to me, which reads as follows :- "I am now… | ||
| scan 222 | Ignition timing specifications, including lead and retard angles for a magneto-equipped engine at various RPMs. | ||
| View original record | R.R. 554. (100 T) R.W. 728. 10.12.20. C. 2927 X.3949 To Hs. from R. c. to CJ. c. to EFC. R9/G15.2.21. X.699 - RE IGNITION TIMING. X.928. X.3949. With the magneto, we find the little engine here which… | ||
| scan 223 | Assessment of an American Bosch battery ignition system, comparing its governor, contact maker, and coil. | ||
| View original record | H.R. 555A (100 T) R.N. 798. 10-12-20: G. 2947 X. 3949 Extract from Rll/G16.2.21. X.4275 - RE AMERICAN BOSCH BATTERY IGNITION. GOVERNOR. X.3949. We do not think the Governor is as efficient as the… | ||
| scan 224 | Table showing the timing in degrees for both magneto and battery governed ignitions at various engine speeds. | ||
| View original record | X.3949. 2.3.21. Hs. RE GOVERNED IGNITION. The table below gives in degrees the timing position of both magneto and battery ignitions where H.P. commences to drop at various speeds. All readings… | ||
| scan 225 | Test results for governed ignition timing, comparing different spark plug positions. | ||
| View original record | X.3949. 10.3.21. Hs. RE GOVERNED IGNITION. Further tests as below:- | Intermediate Plugs. | Plugs over inlet valves. R.P.M | Retard. | Advance. | Retard. | Advance. 500 | 10° | 20° | 10° | 21.5° 1000… | ||
| scan 226 | Ignition advance test results for Goshawk and 40/50 engines. | ||
| View original record | x3949 R R (M) (a) T/S H. 936. 19-4-21; G 3008 To R. from Hs. c. to C.J. c. to B.V. c. to E. c. to Da. Hs5/LG14.4.21. x 699 [crossed out] x3949 IGNITION ADVANCE ON 40/50 AND GOSHAWK ENGINES. X928 We… | ||
| scan 227 | Procedure for marking ignition timing using a dynamometer shaft-mounted drum and a high tension wire. | ||
| View original record | Contd. -2- Hs5/LG14.4.21. the ignition is taking place. This arrangement is especially useful when automatic advance is used. A drum marked off in degrees is fixed to the dynamometer shaft; round this… | ||
| scan 228 | Test data for starting the Goshawk I engine, including torque measurements and spark advance figures. | ||
| View original record | To R. from Hs. c. to CJ. BN. E. c. to DA. BY. X.3949. Hs9/LG28.4.21. X.3481. RE GOSHAWK I ENGINE. X.3949. We are running Goshawk I engine on the test bench. We have measured the torque necessary to… | ||
| scan 229 | Goshawk I engine battery ignition timing data at various speeds. | ||
| View original record | Contd. (2)" Hs9/LG28.4.21. Goshawk I Battery Ignition. Positions on flywheel B.T.D.C. at which horse power drops by retard or advance at various speeds. (Columns added by EFC) Revs. Retard. Advance.… | ||
| scan 230 | Table of Goshawk II ignition settings showing flywheel degrees where horsepower falls off at various RPMs. | ||
| View original record | 3949. Hs. 3.2.22. GOSHAWK II IGNITION. Degrees on flywheel at which HP. falls off advanced and retarded. R.P.M. Retarded. Advanced. Range. B.T.D.C. B.T.D.C 500 16.5° 32° 15.5° 750 22 37 15 1000 27.5… | ||
| scan 231 | Criticisms of the Goshawk car, focusing on suggestions for the carburetter mixture and ignition controls. | ||
| View original record | Y3949 Ee. C/o R. Le Canadel. from EP. EP3/LG23.3.22. GOSHAWK. Y3949 CARBURETTER CONTROL. X4239 Y4219 Amongst the criticisms made on the Goshawk car, is one relating to the carburetter mixture control… | ||
| scan 232 | Continued internal memorandum discussing a report and sales considerations to answer future criticisms. | ||
| View original record | contd:- -2- attach a copy of report he-is-making-out in connection with this matter. It is quite possible that this point has already received Sales consideration and what we are now proposing is to… | ||
| scan 233 | Proposing to fit a Goshawk-style governed ignition to the 40/50 model due to its advantages in slow running. | ||
| View original record | X3949 To Hs. from R. c. to CJ. BJ. c. to PN. Wcr. c. to By. EP. R4/M17.10.22. 40/50 & No.6 GOSHAWK GOVERNED IGNITION. X.3485. X.3949 X.3129 During some investigations with No.6 Goshawk I have noticed… | ||
| scan 234 | Causes of harsh engines, attributing the issue to overly advanced ignition timing. | ||
| View original record | TO Hs EP } from R. OY PN } CJ BJ } X.3949 R3/M18.10.22. HARSH ENGINES - X.4219 X.928 X.3949 I shall be pleased if Mr. Hives and Mr. Platford will on every possible occasion find out whether my… | ||
| scan 235 | Continued note detailing how extra retarding enabled the engine to start on the switch. | ||
| View original record | contd:- -2- the extra retarding enabled the engine to nearly always start on the switch. R. [Watermark: MADE AT CROWLEY 1904] | ||
| scan 236 | Characteristic curves of a Bregshana automatic ignition advance governor. | ||
| View original record | CHARACTERISTIC CURVES OF BREGSHANA AUTOMATIC IGNITION ADVANCE GOVERNOR I. CURVE REQUIRED BY ENGINE II. NEAREST CURVE TO I OBTAINED BY CALCULATION. III. ACTUAL CURVE OBTAINED WITH GOVERNOR. (SYMBOL)… | ||
| scan 237 | Reverse side of a document showing an official date stamp. | ||
| View original record | ROLLS-ROYCE PRINT 18 OCT. 22 OE | ||
| scan 238 | Standard ignition timing specifications for the Goshawk engine. | ||
| View original record | X.3949 EFC/T24.11.22. X.3485 - GOSHAWK IGNITION - STANDARD TIMING X.928. X.3949. The hand advance allows for 20º advance on the distributor or 40º on the engine. The automatic advance is 15º on the… | ||
| scan 239 | Covering memo for a letter received from Springfield regarding the Spark Advance Mechanism. | ||
| View original record | To H. from B.J. Copy to Hs. BJ19/H20.8.23. X.3949 Re Spark Advance Mechanism. I attach a letter on the above subject, reference Oy5/W8823, which has been received from Springfield this morning. B.J. | ||
| scan 240 | Letter discussing developments in spark advance mechanisms, particularly automatic systems. | ||
| View original record | Oy5-W-8823 [STAMP: RECEIVED 15 AUG 1923 H2] August 3, 1923. Mr. Claude Johnson, Rolls-Royce, Limited, London, England. (Copy for attention of Mr. Royce) Mr. Hives) ✓ Dear Sir: Re Spark Advance… | ||
| scan 241 | Impressions and objections regarding automatic spark advancement in engines. | ||
| View original record | x3949 To CY. From R. c. CJ. BJ. c. HS. EP. c. PN. EY. c. H. R2/M21.8.23 AUTOMATIC SPARK ADVANCEMENT. X.3949. X.928. X.699. I was very interested in Prof. Upton's paper on automatic spark advancement.… | ||
| scan 242 | From EFC requesting ignition timing diagrams for the 40/50 and 20 HP models. | ||
| View original record | X3949 To By/Shn. from EFC. EFC2/T12.10.23. X928 X3949 As arranged in conversation with you a day or two ago, you are getting out for us ignition timing diagrams for the 40/50 and 20 H.P., showing the… | ||
| scan 243 | The relative timing of the battery and magneto ignition systems. | ||
| View original record | X3949 To EY. from EFC. c. By/Shn. c. EF. c. Hs/TMW. EFC2/T17.10.23. X.3485 - RELATIVE TIMING OF BATTERY AND MAGNETO. X1551 X3949 X928 X4357 At speeds below that at which the automatic advance of the… | ||
| scan 244 | Modifications to rotor blades for the magneto spark system. | ||
| View original record | Contd. -2- EFC2/17.10.23. lever is advanced, becoming only .060" at fully advanced. The amount of course would be again reduced the moment the automatic advance comes into play. It is suggested that… | ||
| scan 245 | Relationship between magneto and battery controls, and proposing a new hydraulic ignition advance mechanism. | ||
| View original record | X 3949 To Hs. from R. c.c. EEC. R2/M18.10.23. IGNITION ADVANCE. X.3949. X.928. X.9780. Owing to the greater range if ignition timing required by the EAC. the relationship between the magneto and… | ||
| scan 246 | Definition and settings for the 20 HP battery ignition timing. | ||
| View original record | x3949 To EY. } " EP. } from EFC. " Ey/Shn.} EFC5/T23.10.23. X.928 - IGNITION TIMING. X.3949. It would appear that some want of definition exists in the setting of the 20 H.P. battery ignition. It will… | ||
| scan 247 | Continued discussion on ignition timing adjustments and the effectiveness of the retard feature. | ||
| View original record | Contd. -2- EFC5/T23.10.23. too early and that the increased range is not being used for the reason for which it was originally added, viz. to improve the starting by retarding the ignition lever, so… | ||
| scan 248 | Ignition timing specifications for the Goshawk engine. | ||
| View original record | X.3949 EFC/T23.10.23. X.3485 - RE GOSHAWK IGNITION TIMING. X.3949. The hand advance allows for 20° advance on the distributor, or 40° on the engine. The automatic advance is 15° on the distributor 30°… | ||
| scan 249 | Diagram illustrating the battery and magneto ignition advance for a Goshawk engine. | ||
| View original record | X3485 X3949 Battery Ignition advance. (Fully advanced automatically) Advance allowed by rotor blade (Full automatic retard) Advance Magneto Battery Ignition advance. (Fully retarded automatically)… | ||
| scan 250 | Back page with a Print Room date stamp. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 25 OCT. 1924 DERBY | ||
| scan 251 | The starting procedure and ignition settings for the Goshawk engine. | ||
| View original record | To EY. from EFC. c. EP. Hs. c. Hs/IMW. X3949 EFC2/T9.1.24. X.3485 - GOSHAWK BATTERY IGNITION. X.3948. Herewith please receive copy of matter relating to the starting of the Goshawk engine, which… | ||
| scan 252 | Design of an oil retainer, magneto governing, and ignition systems for the 3rd E.A.C. engine. | ||
| View original record | SECRET X3949 To Hs. from R. RG. E. DA. c. CJ. BJ. BY. WOR. PN. EP. R1/M1.2.24. 3rd E.A.C. ENGINE X.3949. X.9790. I was extremely pleased to hear that the design of oil retainer at the rear end, that… | ||
| scan 253 | To determine the required degree of ignition advance on an EAC engine. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. COPIES TO: R.CJ. BJ. WOR. By. E. Da. EP. PN. OY. Expl. No. x3749 REF. HS2/LGL.4.24. OBJECT OF TEST. To find degree of ignition advance… | ||
| scan 254 | The ignition advance required to maintain power for an E.A.C. engine. | ||
| View original record | B.R. 493A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. REF: Hs/ACL1.4.24. E.A.C. ENGINE. Ignition advance required to maintain power. Figures obtained from 3-EAC.1 Engine - 4.6… | ||
| scan 255 | Engine performance data with synchronized and magneto-only ignition systems. | ||
| View original record | B.R. 403A (40 H) (SL 42 12-7-23). J.H. D. EXPERIMENTAL REPORT. Expl. No. REF: Hs/ACL/1.4.24. (3) Both Ignition synchronized. REVS. | LBS. | MAX. | MIN. | MEAN. 2500 | 113 | --- | 43º | 45º 2250 | 125… | ||
| scan 256 | Performance data from an ignition test at various engine speeds. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H.D. EXPERIMENTAL REPORT. Expl. No. REF: HS/ACL/1.4.24. (5) Both Ignitions. REVS. | LBS. | MAX. | MIN. | MEAN. 2500 | 132 | --- | 42° | 44.5° 2250 | 141 | --- | 40°… | ||
| scan 257 | Graph of ignition advance curves versus engine speed for an S.A.C. engine, with Hispano engine curves for comparison. | ||
| View original record | IGNITION CURVES. CURVES 1. 2. 3. S.A.C. ENG. MEAN POSNS FOR MAINTAINING OUTPUT. HISPANO CURVES FOR COMPARISON. DEGREES ADVANCE. REVS/MIN. BATTERY (1) ONLY MAG ONLY (2) BOTH IGNS. (3) HISPANO 1 PLUG… | ||
| scan 258 | Graph of ignition curves for an E.A.C. engine, plotting ignition advance against engine speed for different ignition systems. | ||
| View original record | IGNITION CURVES. MIN ADVANCE TO MAINTAIN OUTPUT. E.A.C. ENGINE. ADVANCE. DEGS. REVS/MIN. BATTERY ONLY MAG ONLY BOTH IGNS. R.H.Yarrow 31-3-24. | ||
| scan 259 | Drawing and description of a combined magneto and battery ignition automatic advance hydraulic relay. | ||
| View original record | To E. from R. c. CJ. RG. c. HS. BY. Mr. Claremont. X 3949 SECRET RL/M3.4.24. E. A. C. X.3949. X.9780. X.9040. COMBINED MAGNETO & BATTERY IGNITION AUTOMATIC ADVANCE. (R.R. HYDRAULIC RELAY). I have done… | ||
| scan 260 | Design document explaining the operation of a multi-piston valve system with diagrams. | ||
| View original record | -2- As you will remember the central valve is in equilibrium and should take practically no force to move. It only needs to move .1 up and down to uncover inlet and exhaust ports. I found considerable… | ||
| scan 261 | Design of an automatic ignition advance mechanism using a floating lever and oil pressure. | ||
| View original record | (3) To keep all dirt out of the central valve there will be a fine gauze filter at the entrance. The piston unit, valve, and cyl. should easily come away for cleaning. Somewhere in the circuit of… | ||
| scan 262 | Proposed ignition governor and advance curve for the EAC engine. | ||
| View original record | To Hs. from E. c. to CJ. c. to EFC. c. to EY. X3949 S E C R E T E1/M9.8.24. E. A. C. X.9140. X.3949. X.9780. IGNITION GOVERNOR. In dealing with the proposed ignition governor for the EAC. engine,… | ||
| scan 263 | Automatic advance settings for the HAC.2 engine, showing maximum and minimum engine degrees B.D.P. at various speeds. | ||
| View original record | X.3949. 21.8.24. X.3949. AUTOMATIC ADVANCE FOR HAC.2 ENGINE. (Figures supplied by Hs. showing maximum and minimum engine degrees B.D.P. at which maximum power is maintained for various speeds). Speed.… | ||
| scan 264 | The specifications for four sheets of automatic advance curves for various ignition systems. | ||
| View original record | X.3949. EFC3/T27.8.24. AUTOMATIC ADVANCE CURVES. We want to date to have four sheets of automatic advance curves, respectively labelled :- (A) (B1) (B2) (C) Group A. will be with reference to the… | ||
| scan 265 | List describing various ignition advance curves for the EAC engine. | ||
| View original record | -2- Contd. Group C. This group of curves is with reference to the EAC. engine. (1) The actual average representative curve of the automatic advance (of the R.R. Battery Ignition Governor) obtained on… | ||
| scan 266 | Dispatch of automatic advance curves for the EAC.II and 20 HP engines. | ||
| View original record | x3949 SECRET To R. from EPC. c. E. c. CJ. E. A. C. EFC9/T27.8.24. AUTOMATIC ADVANCE - EAC.II. (AND 20 HP.) ENGINE. x3949 x9780 X-3485 Reference E1/M9.8.24. We are sending, addressed to R. under… | ||
| scan 267 | Continued page describing various ignition system curves and their application for 20 HP and EAC.2 models. | ||
| View original record | Contd. -2- EFC9/T27.8.24. These tracings are labelled (in red) "R.R. Battery Ignition" "Scintilla AG-6-A Magnetos (average curve), "Scintilla AG-6-A Magnetos" and "General Magneto Specification". All… | ||
| scan 268 | Comparison of engine performance curves and automatic advance characteristics. | ||
| View original record | Contd. -3- EPC9/T27.8.24. This is put on tracing paper so that it may be compared by super-position with the curves for the 20 HP., from figures supplied by Hs. on 3.2.22, but the absolute position of… | ||
| scan 269 | List categorizing ignition advance curves for various engines, chassis, and magnetos. | ||
| View original record | Contd. -4- EFC9/T27.8.24. Of these,:- Sub-group A is with reference to battery ignition on 20 HP. chassis only, and contains:- (1) A curve obtained by calculation judged to be the nearest possible to… | ||
| scan 270 | Page discussing average advance curves for various Scintilla magnetos and their application to a 20 HP engine. | ||
| View original record | Contd. -5- EFC9/T27.8.24. (4) Average advance curve of AM-6-A Scintilla magnetos (5) Average advance curve of AG-6-A Scintilla magneto No. 21523. (6) Average advance curve of AG-6-A Scintilla magneto.… | ||
| scan 271 | Adjustments to magneto and battery ignition timing specifications for the 20 HP and EAC.2 engines. | ||
| View original record | Contd. -6- EFC9/T27.8.24. this is liable to be exceeded by a few degrees, so that the maximum advance of the battery ignition may be this amount less than the 60° b.d.p. stated. A photostat diagram… | ||
| scan 272 | Synchronizing the advances of battery and magneto ignition systems. | ||
| View original record | Contd. -7- EFC9/127.8.24. The two advances of the battery ignition in this diagram are the same as at present on the 20 HP. Those for the magneto ignition are as specified in our general specification… | ||
| scan 273 | Continued response to a query regarding the battery ignition governor spring and distributor speed limits for a 20 HP engine. | ||
| View original record | Contd. -8- EFC9/T27.8.24. between the degrees of advance on the battery ignition and the hand lever. Lastly, with reference to E's final query, there is a slight initial set on the 20 HP. battery… | ||
| scan 274 | Diagram illustrating the ignition timing advance for battery and magneto systems. | ||
| View original record | X.3949 70° 60° 50° 40° B.D.P. 30° 20° 10° RETARD. 0° 10° A.D.P. 20° BATTERY IGNITION ADVANCE. (FULLY ADVANCED AUTOMATICALLY) MAGNETO ADVANCE. (FULLY ADVANCED AUTOMATICALLY) BATTERY IGNITION ADVANCE.… | ||
| scan 275 | Blank page marked with a red 'Print Room, Derby' stamp. | ||
| View original record | ROLLS-ROYCE PRINT ROOM 28 AUG. 24 DERBY | ||
| scan 276 | Graph showing the required ignition advance curves for the 20HP engine. | ||
| View original record | 20.HP. CURVES SHOWING THE IGNITION ADVANCE REQUIRED ON R.R. 20HP ENGINE. (FIGURES SUPPLIED BY H.R.) 3.2.22 THESE CURVES DEFINE THE LIMITS OF IGNITION RANGE, AS EXPERIMENTALLY DETERMINED, OVER WHICH… | ||
| scan 277 | Blank document page with a Print Room date stamp. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 28 AUG. 24 DERBY | ||
| scan 278 | Graph showing the maximum and minimum ignition advance curves required for the E.A.C.II engine. | ||
| View original record | E.A.C.II. CURVES SHOWING THE IGNITION ADVANCE REQUIRED ON E.A.C.II. ENGINE. (FIGURES SUPPLIED BY Hs.) 22-8-24 THESE CURVES DEFINE THE LIMITS OF IGNITION ADVANCE AS EXPERIMENTALLY DETERMINED, OVER… | ||
| scan 279 | Blank document page with a Print Room stamp from Derby. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM 29 AUG. 24 DERBY | ||
| scan 280 | Characteristic curves for the Goshawk automatic ignition advance governor. | ||
| View original record | CHARACTERISTIC CURVES OF R.R. GOSHAWK AUTOMATIC IGNITION ADVANCE GOVERNOR A. I. A CURVE OBTAINED BY CALCULATION JUDGED TO BE THE NEAREST POSSIBLE TO THE EXPERIMENTALLY FOUND REQUIREMENTS OF THE ENGINE… | ||
| scan 281 | Stamped document from the Print Room in Derby. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 29 AUG. 24 DERBY | ||
| scan 282 | Graph showing the automatic advance of cam with speed for Scintilla Magnetos types AG6A and AM6A. | ||
| View original record | TITLE: AUTOMATIC ADVANCE OF CAM WITH SPEED ON SCINTILLA MAGNETOS TYPE'S AG6A AND AM6A. REFERENCE (TOP RIGHT): B.I. GRAPH LABELS: R.R. GOSHAWK. DISTRIBUTOR AM6A NO 26485. AM 6A No 34397. AG6A. No… | ||
| scan 283 | Blank page with a red 'PRINT ROOM' date stamp. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 29 AUG. 24 DERBY | ||
| scan 284 | Graph and table detailing the automatic and hand advance characteristics of an R Distributor and various Scintilla Magnetos. | ||
| View original record | AUTOMATIC ADVANCE CHARACTERISTICS OF R DISTRIBUTOR AND SCINTILLA MAGNETOS. TABLE OF AUTOMATIC AND HAND ADVANCE IN ENGINE DEGREES TABLE DATA: UNIT: DISTRIBUTOR, AUTOMATIC ADVANCE: 40°, HAND ADVANCE:… | ||
| scan 285 | Blank document page with a print room date stamp. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 29 AUG. 24 DERBY | ||
| scan 286 | Graph and table detailing the automatic advance characteristics of Distributor, Scintilla, and Eisemann magnetos. | ||
| View original record | AUTOMATIC ADVANCE CHARACTERISTICS OF DISTRIBUTOR, SCINTILLA AND EISEMANN MAGNETOS. TABLE OF AUTOMATIC AND HAND ADVANCE IN ENGINE DEGREES. UNIT | AUTOMATIC ADVANCE | HAND ADVANCE DISTRIBUTOR | 40° |… | ||
| scan 287 | Blank document cover sheet with a red ink 'Print Room' stamp. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 29 AUG. 24 DERBY | ||
| scan 288 | Diagram of the 40/50 model's battery and magneto ignition advance curves. | ||
| View original record | B D P A D P -10° 0 3° Retard IGNITION LEVER TRAVEL Advance 433 11 2/3 ° Battery Ignition Advance. Magneto Advance 40/50 BATTERY AND MAGNETO IGNITION DIAGRAM 40° 30° 23° 20° 10° 0° | ||
| scan 289 | Stamped document from the print room in Derby. | ||
| View original record | ROLLS-ROYCE LIMITED PRINT ROOM 24 APR. 1926 DERBY. | ||
| scan 290 | Diagram showing battery and magneto ignition timing advance curves. | ||
| View original record | 70° 60° 50° BATTERY IGNITION ADVANCE. (FULLY ADVANCED AUTOMATICALLY) 40° 30° B.D.P. BATTERY IGNITION ADVANCE 30° (FULLY RETARDED AUTOMATICALLY) 20° MAGNETO ADVANCE 10° RETARD. 0° IGNITION LEVER TRAVEL… | ||
| scan 291 | Stamped cover page from the archives. | ||
| View original record | ROLLS-ROYCE LIMITED PRINT ROOM 24 APR. 1928 DERBY | ||
| scan 292 | Secret internal memorandum discussing the development of an automatic ignition advance system and other modifications for the 40/50 model. | ||
| View original record | X3949 TO HS. FROM R. SECRET. R4/M5. 9.24. Copy to C.I. " " EBG. E. A. C.11. IGNITION &C. COMBINED AUTOMATIC ADVANCE BY RELAY. Y3949 X8680 We have nearly completed the R-R automatic combined advance… | ||
| scan 293 | Secret memo discussing drawings for an automatic advance system for battery and magneto ignitions. | ||
| View original record | X3949 S E C R E T. To EY. from E. c. to CJ. c. to HS. E1/M13.9.24. E.A.C. II. AUTOMATIC ADVANCE FOR BATTERY AND MAGNETO IGNITIONS. X.3949. X.8680, X.8685 We send herewith drawings Lec.1916/17/19/21.,… | ||
| scan 294 | Blueprints, patent work for an automatic relay device, and the importance of keeping the information secret. | ||
| View original record | E1/M13.9.24. -2- Contd. complete, as you will find, but we have retained blue prints of the drawings requiring attention, and will send on the remaining particulars as soon as ever possible. In the… | ||
| scan 295 | General magneto specification document featuring two performance curves. | ||
| View original record | General Magneto Specification X3949 | ||
| scan 296 | Graph illustrating performance curves for a Scintilla AGGA component. | ||
| View original record | Scintilla AGGA | ||
| scan 297 | Hand-drawn graph of curves for a Scintilla amba device. | ||
| View original record | Scintilla amba. | ||
| scan 298 | Hand-drawn graph with two curves related to battery ignition. | ||
| View original record | Battery Ignitions | ||
| scan 299 | Hand-drawn graph with two curves, supplied by Scintilla & Co. | ||
| View original record | Figure Supplied by Scintilla & Co | ||
| scan 300 | Specifying ignition timing settings for an engine. | ||
| View original record | X3949 14.5.25. X.8680/5. EAC. IGNITION TIMING. X.3949. Range of automatic control 28° Full battery retard 10° after top centre. Full magneto retard 12° before top centre. Point of synchronisation 16°… | ||
| scan 301 | Automatic advance mechanism issues for the Phantom model, including magneto noise and governor modifications. | ||
| View original record | To Hs/HM. from R. EFC c. to BJ Wor. Hy. X3949 RL/M4.5.26. PHANTOM AUTO. ADVANCE. X.8685. X.3949. (A) Referring to your memo of 23.4.26. I understand the noise is caused by the swing of the magneto… | ||
| scan 302 | Inefficiency and proposing modifications to a governor springing mechanism, including a diagram. | ||
| View original record | Contd. -2- RL/M4.5.26. coming to zero with a governor starting to open at 250 revs. equalling 500 crankshaft speed. We think there should be an initial advance of anything up to crankshaft 30 to be… | ||
| scan 303 | Typed memorandum discussing design improvements and specifications for a governor system, including pistons, weights, and springs. | ||
| View original record | Contd. -3- RL/M4.5.26. Relay centre piston is better light but its gravity could be used if not exceeding 250 governor revs. The governor weights we should like heavier (but lead is too plastic) and… | ||
| scan 304 | Graph and notes analyzing engine ignition advance curves and governor performance. | ||
| View original record | RL/M4.5.26. -4- GRAPH: Vertical Axis: ADVANCE (0, 10, 20, 30, 40, 50) Horizontal Axis: ENGINE REVS (0, 1000, 1900, 3008) Annotations on graph: HAND CONTROL SERVO PISTON STROKE 4" 5 Oil pressure… | ||
| scan 305 | Concluding remarks on improvements to hydraulic cylinders, governor springs, and engine performance. | ||
| View original record | Contd. -5- RL/W4.5.26. CONCLUDING REMARKS. Controls ought to be casehardened and fitted up and maintained with the minimum slack possible. (1) Improvement to hydraulic cylinder (2) " collar… | ||
| scan 306 | Drawings and design issues for the Phantom Automatic Ignition Advance system. | ||
| View original record | TO BY. FROM E. C. to HS. HS/RM. N3949 ORIGINAL E1/M17.5.26. PHANTOM AUTOMATIC IGNITION ADVANCE. X8685 We send you herewith drawings LeCs. 2242. & 2244., dealing with the above. The former shews… | ||
| scan 307 | Technical memo discussing modifications to ignition timing, governor mechanisms, and firing point diagrams for the Phantom model. | ||
| View original record | (2) It is intended that the differential mechanism regulating the hand advance should be left unaltered. We realise this will not allow us to obtain a full 30° governor advance on the flywheel as the… | ||
| scan 308 | Ignition advance requirements and control modifications for an aluminium engine with a turbulent head. | ||
| View original record | X 3949 To R. from Hs/Rm. c. to BJ. Wor. c. to RG. R. c. to DA. BY. Hs/Rm2/LG6.5.27. EAC.7. - IGNITION ADVANCE CURVES. X7685 As we have now got the ignition advance requirements of the aluminium engine… | ||
| scan 309 | Blueprint comparing ignition advance curves for the Lighter Phantom model up to LEC 2230. | ||
| View original record | IGNITION ADVANCE FOR LIGHTER PHANTOM TO LEC 2230 (BOTH IGNITIONS BEING SYNCHRONISED) DEGREES ADVANCE ON FLYWHEEL PRESENT COMPROMISE REQD CURVE THIS CURVE IS BETTER FOR ANTI DETONATING PROPOSED R.P.M.… | ||
| scan 310 | Blank cover page with a print room stamp. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM, 6 MAY 1927 DERBY. | ||
| scan 311 | Blueprint graph comparing ignition advance curves for a Lighter Phantom engine up to LEC 2230. | ||
| View original record | X59441 IGNITION ADVANCE FOR LIGHTER PHANTOM TO LEC 2230 (BOTH IGNITIONS BEING SYNCHRONISED) DEGREES ADVANCE ON FLYWHEEL A PRESENT COMPROMISE REQD CURVE 13° M&B 1" M M1° 13°B M1° 8.25° B THIS CURVE IS… | ||
| scan 312 | Simple pencil sketch of a diagram with four nodes. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM, -6 MAY 1927 DERBY. | ||
| scan 313 | Ignition timing diagram for the E.A.C.10 engine. | ||
| View original record | DEGREES OF ADVANCE ON ENGINE -20, -10, 0, 10, 20, 30, 40, 50 FULL BATTERY RETARD 0° FULL MAG RETARD 5° HAND ADV. BATTERY IGNITION 30° HAND ADV. MAGNETO 15° IGNITION TIMING DIAGRAM FOR E.A.C.10 ENGINE… | ||
| scan 314 | Heavily faded document, possibly a carbon copy, with a handwritten reference number and an ink date stamp. | ||
| View original record | Y3949 S. LIMITED ROOM 28 SEP 1928 DERBY. | ||
| scan 315 | Specification sheet comparing present and revised ignition timing settings for the Phantom engine. | ||
| View original record | X 3949 27.9.28. PHANTOM IGNITION TIMING. x928 XC680 Present. RL/M19.9.28. Battery hand range. 30° 30° Magneto hand range. 8° 15° Auto range. 28° to 30° 25° Full battery retard. 10° A.T.C. 10° Full… | ||
| scan 316 | Request for a quotation on a rectifier set for charging chassis batteries from an alternating current supply. | ||
| View original record | X1589. Roy. from EFC. EFCl/AD18.12.29. X.1589. RECTIFIER SUITABLE FOR CHARGING CHASSIS BATTERIES FROM ALTERNATING CURRENT SUPPLY. Will you please obtain from the Westinghouse Brake & Saxby Signal… | ||
| scan 317 | Obtaining a quotation for a car dynamo rectifier unit from the Westinghouse Brake & Saxby Signal Co. | ||
| View original record | X1589. PN. from EFC. c. Hs. EFC2/ADL8.12.29. CAR DYNAMO OUTPUT. Reference RL/M16.12.29. We are obtaining a quotation from the Westinghouse Brake & Saxby Signal Co. for one of their RP.10.F. rectifier… | ||