Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Cross-reference note for previous correspondence regarding a 40/50 N.B. dynamo. | ||
| View original record | X.7660 For previous correspondence re 40/50 N.B. dynamo with 28 slot armature; see X.8672 . | ||
| Scan002 | Order request for 6 sets of Dynamo Brushes for an E.A.C. Dynamo, along with blueprints. | ||
| View original record | X8673 C. EFC. BY/RD20/ML.14.8.25. X.8660 - E.A.C. DYNAMO. Will you please order 6 sets of Dynamo Brushes, one set consisting of:- Main Brush D.70964. - 2 off. " " D.70965. - 2 " Control " D.70966. - 1… | ||
| Scan003 | Stock levels and distribution of narrow type brushes. | ||
| View original record | EFC. X8673 13.4.26. NARROW TYPE BRUSHES IN STOCK+ Six sets of the above type brushes were received by us 2.9.25. Of these, five complete sets, and one odd control brush, have been handed to the shop,… | ||
| Scan004 | Internal request to order six further sets of experimental dynamo brushes for use with special brush holders. | ||
| View original record | To Wd. from EFC. X8673 EFCL/T15.4.26. X.8671 - EAC. DYNAMO WITH NARROWER BRUSHES. Would you please order six further sets of dynamo brushes, each set consisting of :- Main Brush - D.70964. 2 off. " "… | ||
| Scan005 | Table of dimensions for dynamo brushes for Goshawk and E.A.C. models. | ||
| View original record | 11.5.26. DYNAMO BRUSH DIMENSIONS. MAIN. | CONTROL. --- Row 1: Goshawk. MAIN: .300, .750, .225 sq." CONTROL: .200, .750, .150 sq." --- Row 2: E. A. C. MAIN (left cell): .375, .500, .1875 sq." MAIN… | ||
| Scan006 | Instruction sheet detailing the components of a narrow type brush set for an EAC Dynamo and noting an order discrepancy. | ||
| View original record | RR 238 (150 BKS.) (SH57.29-6-20.) MP 224358 X.8678 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.F.C. Order No.: P.C. 105 Customer's No.: X 8671 Date: 21st May. 1926 Narrow Type Brushes for EAC Dynamo. One set… | ||
| Scan007 | Adapting standard experimental brushes for testing on an N.B. type machine. | ||
| View original record | EFC. X673 419.26. POSSIBLE ADAPTATION OF STANDARD SIZE EXPL. BRUSHES FOR TEST ON N.B. machine. X673 In connection with the suggestion that the experimental brushes of standard size that we have, might… | ||
| Scan008 | The differences between three groups of brushes for Standard EAC and N.B. dynamos. | ||
| View original record | X8673 EFC. 10.9.26. DIFFERENCES BETWEEN BRUSHES FOR STD. X8670/3 EAC. AND N.B. DYNAMOS. The brushes in question are divided into three groups :- 1. Those under D numbers 70619-22 2. " " " " 70910-13… | ||
| Scan009 | Test results for narrow brushes on a K machine, comparing wear against standard brushes. | ||
| View original record | RR 238.(150 BKS.) (SH57.29-6-20.) MP 224358 ROLLS-ROYCE LTD. INSTRUCTIONS. To: EFC Order No.: PC117 Customer's No.: X 8673 Test of Narrow Brushes on K Machine. A set of narrow brushes of standard… | ||
| Scan010 | Report comparing the wear and noise of control brushes against standard brushes, attributing lower wear to cooler running conditions. | ||
| View original record | RR 238 (150.BKS.) (SH57.29-6-20.) MP 224358 ROLLS-ROYCE LTD. INSTRUCTIONS. To_____________________ 19 Order No. PC 117 (2) Customer's No._____________ the control brushes where the wear is .003" to… | ||
| Scan011 | List of finally fixed quantities and specifications for a new experimental standard EAC Dynamo. | ||
| View original record | X 7660. 7.12.26. X.8660. EAC. DYNAMO - QUANTITIES FINALLY FIXED FOR NEW EXPERIMENTAL STANDARD. Brush widths :- Main .280" Control .187" Field winding (19- SWG) Air gap. .022" Main brush position angle… | ||
| Scan012 | Letter from Le Carbone regarding a trial of new dynamo brushes to reduce noise. | ||
| View original record | X8671 CONTRACTORS TO THE ADMIRALTY, WAR OFFICE, POST OFFICE, &c. Suppliers to the Principal Railways, Tramways, Corporations and Electric Light and Power Undertakings throughout the World. CARBON… | ||
| Scan013 | Revised and corrected page from a letter detailing sample dynamo brushes for 20 HP and 40/50 HP lighting sets. | ||
| View original record | Page 2 of Le Carbone letter of 27th January revised and corrected. Details of sample brushes submitted under separate cover:- ITEM 1:- DYNAMO BRUSHES TO DRAWINGS D.51325/6 FOR 20 HP. DYNAMO LIGHTING… | ||
| Scan014 | Letter to Messrs. Le Carbone about an error in a dynamo brush shipment and clarifying the correct requirements. | ||
| View original record | X 8673 EFC6/T. 28th January, 1927. Messrs. Le Carbone, Ceventry House, South Place, London, E.C.2. Dear Sirs, We have your letter of the 27th inst. ref. 5868/P.5263 concerning dynamo brushes, and we… | ||
| Scan015 | Letter from supplier Le Carbone regarding a shortage of two dynamo brushes in a sample delivery for testing. | ||
| View original record | X8673 CONTRACTORS TO THE ADMIRALTY, WAR OFFICE, POST OFFICE, &c. Suppliers to the Principal Railways, Tramways, Corporations and Electric Light and Power Undertakings throughout the World. CARBON… | ||
| Scan016 | Letter to The Morgan Crucible Co. Ltd. concerning the supply of pigtail end terminals for experimental dynamo brushes. | ||
| View original record | X8678 EFC4/T. 4th February, 1927. Messrs. The Morgan Crucible Co.Ltd., Battersea Works, Church Road, S.W.1. Dear Sirs, With reference to your telephone message of to-day, concerning pigtail end… | ||
| Scan017 | Letter from The Morgan Crucible Company regarding the trial production of experimental dynamo brushes. | ||
| View original record | ea 2886 X8671- CODES, A.B.C. 4TH 5TH & 6TH (5 LETTER) EDITIONS, A.I. LIEBERS & WESTERN UNION (UNIV. & 5 LETTER EDIT.) & BENTLEY'S. Inland Telegraphic Address: "CRUCIBLE, PHONE, LONDON" (2 words only… | ||
| Scan018 | Letter from Le Carbone regarding the dispatch of two missing brushes from an original consignment. | ||
| View original record | X9679 CONTRACTORS TO THE ADMIRALTY, WAR OFFICE, POST OFFICE, &c. Suppliers to the Principal Railways, Tramways, Corporations and Electric Light and Power Undertakings throughout the World. LE CARBONE… | ||
| Scan019 | Letter to Messrs. Le Carbone confirming receipt of satisfactory brushes. | ||
| View original record | CERTIFICATE OF INSPECTION BY A.I.D. ROLLS-ROYCE ENGINES AND SPARES X8673 Name of Customer Address Engine No. Customer's Order No. R.R. Card No. EFC5/T. 23rd. February, 1927. DETAILS Messrs. Le… | ||
| Scan020 | Advice note from The Morgan Crucible Company Limited listing various types of electrographitic brushes. | ||
| View original record | EL 2128 X8678 CODES, A.B.C. 4TH, 5TH & 6TH (5 LETTER) EDITIONS, A.I. LIEBER'S & WESTERN UNION (UNIV. & 5 LETTER EDIT.) & BENTLEYS. INLAND TELEGRAPHIC ADDRESS. "CRUCIBLE, PHONE, LONDON." (2 WORDS ONLY… | ||
| Scan021 | Advice note from The Morgan Crucible Company for electrographitic brushes for trial on generators. | ||
| View original record | EL 2128 CODES, A.B.C 4th. 5th & 6th (5 LETTER) EDITIONS, A.I. LIEBER'S & WESTERN UNION (UNIV. & 5 LETTER EDIT.) & BENTLEYS. INLAND TELEGRAPHIC ADDRESS. "CRUCIBLE, PHONE, LONDON." (2 WORDS ONLY… | ||
| Scan022 | Instruction sheet detailing the receipt of experimental Morgan brushes for NB type dynamos. | ||
| View original record | ROLLS-ROYCE LTD. INSTRUCTIONS. RR 238 (150 BKS.) (SH57. 29-6-20.) MP 224358 x8671 To EFC Order No. PC 127 Customer's No. X7670 Mar. 11th 1927 Morgan Brushes for NB Dynamos We have to-day received from… | ||
| Scan023 | Letter to The Morgan Crucible Co. Ltd. acknowledging receipt of brushes for testing. | ||
| View original record | X8678 EFC2/T. 14th March, 1927. Messrs. The Morgan Crucible Co.Ltd., Battersea Works, Church Road, London, S.W.11. Dear Sirs, We beg to acknowledge receipt of brushes as per your Advice Note… | ||
| Scan024 | Test report on Morganite EG2 narrow brushes for the M Machine. | ||
| View original record | RR 238 (150 BKS.) (SH57.29-6-20.) MP 224358 ROLLS-ROYCE LTD. INSTRUCTIONS. To E F C Order No. PC 142 Customer's No. X 8673 July 12th 1927 Test of Morganite EG2 Narrow Brushes on M Machine A test of a… | ||
| Scan025 | Instruction sheet detailing the wear and condition of positive, negative, and control brushes. | ||
| View original record | RR 238 (150 BKS.) (SH57.29-6-20.) MP 224356 ROLLS-ROYCE LTD. INSTRUCTIONS. 19 To Order No. PC 142 (2) Customer's No. The positive brushes were blackened along the trailing edges, while the negative… | ||
| Scan026 | Test report comparing the performance of standard brushes on a modified machine. | ||
| View original record | RR 23S (100 BKS.) (SH57.29-6-20.) MP 224358 ROLLS-ROYCE LTD. INSTRUCTIONS. To EFC Order No. PC 143 Customer's No. X8673 July 13th 1927 Test of Standard Brushes on Modified Std Machine WD.75 For the… | ||
| Scan027 | The wear measurements of brushes, comparing results to a previous machine test. | ||
| View original record | RR 238 (15Q BKS.) (SH57. 29-6-20.) MP 224358 ROLLS-ROYCE LTD. INSTRUCTIONS. 19 To Order No. PC 143 (2) Customer's No. The amount of wear of the brushes was as follows:- | | Positive | Negative |… | ||
| Scan028 | Continuation of a report discussing brush tests on the standardised 40/50 dynamo. | ||
| View original record | EFC3/T18.8.27. Extract X8673 Contd. Speaking of the 40/50 dynamo, now that we have standardised the N.B. (narrower brush and larger air gap) machine, a corresponding series of brush tests, i.e. with… | ||
| Scan029 | Test report detailing observations on brush wear for I and K type dynamos. | ||
| View original record | RR 238 (150 BKS.) (DB 461-B-12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To EFC. Order No. P.D.9. Customer's No. X 8673 Miscellaneous Tests of Narrow Brushes. It is thought worthwhile recording the… | ||
| Scan030 | The condition of brushes and commutators, comparing the N13 and standard WB machines. | ||
| View original record | RR 238 (150 BKS.) (DB 461-8.12.24) MP 306975 ROLLS-ROYCE, LTD. INSTRUCTIONS. To_________________________19__ Order No. P.D.q. (2) Customer's No. __________ On both machines the brushes were well… | ||
| Scan031 | Test report on Le-Carbone EG3417 narrow brushes on an M Machine, including brush wear results. | ||
| View original record | RR 239 (150 BKS.) (DB 461-8-12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.F.C. Order No.: P.D.8. Customer's No.: X 8673 Date: Oct. 24th 1927 Test of Le-Carbone EG3417 Narrow Brushes on M… | ||
| Scan032 | The performance of a type of brush, noting wear, dust, surface condition, noise, and commutation qualities. | ||
| View original record | RR 23B (150 BKS.) (DB 461-8-12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To__________________________________________________________19__ Order No. PD 8 (2) Customer's No.___________________ This… | ||
| Scan033 | Arranging the swap of a dynamo between experimental chassis for a 10,000-mile test. | ||
| View original record | To Hs/AJL. from EFC. X.8673 EFC1/T22.11.27. DYNAMO FOR 10,000 MILE TEST. In view of the proposed and impending 10,000 mile test on 12-EX, and the fact that we would like to get the type EG2 Morganite… | ||
| Scan034 | Experimental testing of an auto charge control switch and related components. | ||
| View original record | To R. from EFC. c. BJ, Wor. X8673 EFC5/T5.12.27. AUTO CHARGE CONTROL SWITCH. X.4008 Reference your R3/M2.12.27; we would prefer to look upon the above unit as being too experimental at the moment to… | ||
| Scan035 | Continued memo discussing the comparison between a 'Midgley unit' and their own system, referencing past tests and future experiments. | ||
| View original record | -2- Contd. something that is different. On going into the matter thus deeply we find that although we have had a combined Midgley unit (we have never had a Midgley dynamo) and we have previously made… | ||
| Scan036 | Internal instruction memo regarding a Dynamo with EG2 Morganite brushes for Chassis 12-EX. | ||
| View original record | X8873 To RHU. from EFC. EFC3/T21.12.27. N.B. DYNAMO I WITH EG2 MORGANITE BRUSHES FOR CHASSIS 12-EX. We now hand you this machine for placing on 12-EX in accordance with our previous instruction… | ||
| Scan037 | Instruction sheet detailing the test results of Morganite narrow brushes on an M machine. | ||
| View original record | RR 238 (150 BKS.) (DB 451-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.F.C. Order No.: PD 17. Customer's No.: X 8673 Test of Morganite EG6630 Narrow Brushes on M Machine. Two sets of narrow… | ||
| Scan038 | Inspection report on the condition of control brushes and commutator segments, with a recommendation for further testing. | ||
| View original record | RR 238 (150 BKS.) (DB 431-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To__________________________________ 19__ Order No. P.D. 17 (2) Customer's No.__________________ trailing half, while the… | ||
| Scan039 | Specifications and part numbers for a modified S.S. Dynamo installation on chassis L.C.2501. | ||
| View original record | X7660 C. EFC. BY/RD7/ML.30.5.28. S.S. DYNAMO - L.C.2501. SECTIONS 8070, 80, 90 & 8100. The dynamo for this chassis is placed on the near side of engine, turned through 45° to accomodate the dowel and… | ||
| Scan040 | Recommending the instructioning of a 28 slot armature for the Phantom dynamo. | ||
| View original record | To BY. from EFC. c. BY/RD. c. RHC. X7660 EFC1/T7.6.28. S.S. DYNAMO. On referring to your BY/RD7/ML.30.5.28, we note that the standard 29 slot D.79050 armature has been instructed for this machine. We… | ||
| Scan041 | Instruction to fit a 28 slot Armature D.71347 in place of the standard armature for a specific chassis. | ||
| View original record | X7660 C. EFC. BY/RD/J/ML8.6.28. SS. DYNAMO - LEC.2501. SEC:8070 - ARMATURE. Referring to our BY/RD7/AL.30.5.28 instructing the dynamo for the above chassis, will you kindly note that EFC. wishes to… | ||
| Scan042 | Requesting a new armature be instructed for an S.S. Dynamo machine. | ||
| View original record | X7660 To BY/RD. from EFC. c. RHC. EFC2/T9.6.28. S.S. DYNAMO. LeC.2501. Referring to your BY/RDll/ML8.6.28, we consider that a new armature should be instructed for this machine, as those which we… | ||
| Scan043 | Instruction regarding the unavailability of an S.S. Dynamo Armature and the need to order a new one. | ||
| View original record | X7660 C. EFC. BY/RD5/ML13.6.28. S.S. DYNAMO ARMATURE. The Armature D.71347 (28 slots) already made will not be available for use on this chassis, therefore, will you please put in hand 1 Armature… | ||
| Scan044 | Instructions regarding a change to a new Dynamo Armature and the dispatch of corresponding blueprints. | ||
| View original record | X7660 To RHC [Struck Through] C. EFC. BY/RD6/ML21.6.28. S.S. DYNAMO - L&C.2501. SECTION 8070. In our previous instructions for the Armature of the Dynamo on this chassis we were anticipating using an… | ||
| Scan045 | Suggesting tests on brushes with modified bevels to investigate brush noise. | ||
| View original record | X8673 11.7.28. BRUSH CONTROL TESTS In connection with brush control tests, and investigations into brush noise generally, we think that a set of brushes, with the bevels increased (by filing) from 15°… | ||
| Scan046 | Requesting an adjustment to the commutator connections of an S.S. dynamo based on preliminary test results. | ||
| View original record | To RHC. from EFC. Y7660 EFCL/T1 2.9.28. X.7660, S.S. DYNAMO. From preliminary tests on the first S.S. dynamo received, we find that the angle between the main brushes and the neutral commutating… | ||
| Scan047 | List of various grades of brushes for possible testing, separated by manufacturer and application. | ||
| View original record | X8673 EFC/T19.9.28. X8673 BRUSHES OF VARIOUS GRADES FOR POSSIBLE TEST. (Std. narrow brushes). Le Carbone. EGA. Main and control. 1 set. EG.3417. Main and control. 1 set (awaiting road test) LFC.3AB8.… | ||
| Scan048 | Suggesting an increase in brush bevel angle from 15° to 45° to address brush noise issues. | ||
| View original record | EFC. X8673 16.10.28. BRUSH CONTROL TESTS. I should like to anticipate the results of the above tests, and suggest that we ask the Le Carbone people to make us up two sets of brushes, in the standard… | ||
| Scan049 | Test results and required modifications for an S.S. Dynamo. | ||
| View original record | To EY. from EFC. c. EY/RD. X7660 EFC1/T16.10.28. X.7660. S.S. DYNAMO. As a result of tests carried out on the first of the S.S. type of machine received from the expl. shop, we find that, with the… | ||
| Scan050 | Fitting a new S.S.1 dynamo to an S.S. engine and returning the old TL.95 dynamo. | ||
| View original record | To RHC. from EFC. c. Hs/AJL. X7660 EFC2/T15.10.28. S.S. DYNAMO. We hand you herewith dynamo S.S.1. This machine has been tested by us, and we should be pleased if you would now have this fitted to the… | ||
| Scan051 | Improvement to Phantom dynamo brushes by altering the bevel angle to reduce chattering. | ||
| View original record | X8673 To BY. from EFC. c. BY/RD. EFC3/T16.10.28. PHANTOM DYNAMO BRUSHES. We have reason to believe that an improvement in the minimisation of brush chattering would result in the utilisation of a… | ||
| Scan052 | Recommending a new commutator position for the S.S. Chassis dynamo, enclosing updated diagrams for modification. | ||
| View original record | X7660 C. EFC. BY/RD3/ML.27.10.28. S.S. CHASSIS - DYNAMO - SEC:8070/8100. After testing the first machine EFC. recommends a new commutator position and we therefore send you herewith Winding Diagram… | ||
| Scan053 | Request to supply blueprint parts including brushes, cable eyes, and springs for testing on a Phantom Dynamo. | ||
| View original record | X 7660 To RHC. C. EFC. BY/RD3/ML6.11.28. PHANTOM DYNAMO - SEC:8080. Will you supply EFC. with two sets of brushes to the following blueprints:- D.71907 - Comm: Brush - Control - 1 off) D.71908 - " " -… | ||
| Scan054 | Extract from a CWH (France) report on dynamo and electrical issues with vehicle 18-EX. | ||
| View original record | *7660 Extract from report of CWH. (France) on 18-EX. 18.12.28. The dynamo gives a very poor output, its maximum charging rate being 6 amps. This is insufficient to maintain the lights for all-night… | ||
| Scan055 | Instructions regarding two lots of Morganite EG2 grade brushes received for the Phantom dynamo. | ||
| View original record | ROLLS-ROYCE LTD. INSTRUCTIONS. To: FFC Order No.: PD 31 Customer's No.: X 8673 We have received from the stores two lots of Morganite, E.G.2 grade brushes, of the narrow type, for the Phantom dynamo.… | ||
| Scan056 | Requesting the removal of dynamo I from car 9-EX to examine its experimental armature and brushes after 10,000 miles. | ||
| View original record | To RHC. from EFC. c. Hs/AJL. X8672 EFCL/T13.12.28. N.B. DYNAMO. We should be pleased if you will at your early convenience have dynamo I removed from 9-EX, and dynamo K at present with us fitted in… | ||
| Scan057 | Specification for the inspection and test of an N.B. type dynamo with a 28 slot armature. | ||
| View original record | X.7660 19.12.28. R.R. EAC DYNAMO OF THE N.B. TYPE WITH 28 SLOT ARMATURE. SPECIFICATION OF INSPECTION AND TEST. VERSION 7. Applicable to normal output dynamos with 28 slot armatures, and S.S. type… | ||
| Scan058 | Procedure for testing and bedding the brushes of a dynamo. | ||
| View original record | -2- Contd. (e) The connections of the pigtail conductors are not in any way damaged. (f) The initial bedding of the brush shows partial contact reasonably well distributed over the working surface.… | ||
| Scan059 | Test procedure for a dynamo, covering brush bedding, load tests, and noise/vibration checks. | ||
| View original record | -3- Contd. ferentially, and between the bottom of the holder and the commutator, do not exceed the specified amount. Also that the bedding of the spring on the bevel of the brush and of the brush on… | ||
| Scan060 | Instructions for examining and testing a machine's armature, bearings, and insulation. | ||
| View original record | -4- Contd. (9) Examine also for rubbing armature, slack bearings, cracked insulation and final condition of commutator and brush surfaces. (10) The insulation of the machine should be tested whilst… | ||
| Scan061 | Test report for an S.S. dynamo No.SS5, detailing performance data and faults. | ||
| View original record | X7660 EFC. 22.12.28. S.S. dynamo No.SS5. Output 14 amps. at 18 volts 1300 R.P.M. Peak at 1300 r.p.m. O.C. volts 15.2 at 590 r.p.m. Bad electrical howl over 1350 r.p.m. Slight burning on control and… | ||
| Scan062 | Requesting verification of an unfavourable test report for a Phantom S.S. dynamo intended for France. | ||
| View original record | EFC. X7660 22.12.28. You will have noticed that Mr. Watson's report on the test of the dynamo (Phantom S.S.) that is to go to France is not very favourable. This is the first of this type to be tested… | ||
| Scan063 | Extract detailing an adjustment to a Dynamo's control brush and its effect on battery charge. | ||
| View original record | X7660 Extract from FJA1/C28.12.28 X.7780 18 EX DYNAMO X.7860 The control brush had been moved before my arrival here and the peak output raised to approximately 11.0 amperes. The spare machine has not… | ||
| Scan064 | Request for an additional S.S. motor and dynamo to replace ones not yet returned from Chateauroux. | ||
| View original record | To BY/RD. from EFC. X7660 EFC1/T8.1.29. S.S. MOTOR AND DYNAMO. Will you please instruct one further S.S. motor and dynamo (over and above those already instructed). These are required to replace those… | ||
| Scan065 | Letter to Mr G.W. Hancock in France requesting the urgent return of a dynamo and starter motor. | ||
| View original record | X7660 EFC2/T8.1.29 Expl. Dept., Rolls-Royce, Ltd., Derby. 8th January, 1928. c. Paris. c. Shipping Office. Mr. G.W. Hancock, Hotel de France, Chateauroux, Indre, France. GWH. from EFC. We are urgently… | ||
| Scan066 | Test report on the performance of a green-lamp switch and dynamo for car 20EX. | ||
| View original record | RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 X7660 1 ROLLS-ROYCE LTD. INSTRUCTIONS. To EFC Order No. PD 35 Customer's No. X7660 x 4040 Date Jan. 11th 1929 Green-Lamp Switch and Dynamo Tests. Some… | ||
| Scan067 | Instruction sheet detailing the peak output test of a dynamo (SS2). | ||
| View original record | RR 238 (150 BKS.) (DB 431-8 12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To_____________________19__ Order No. PD 35 (2) Customer's No.__________ Dynamo (SS2) The peak output of the dynamo,… | ||
| Scan068 | Request to examine Morganite dynamo brushes from chassis 9-EX after 10,000 miles of use. | ||
| View original record | RHC. from EFC. c. Hs/AJL. X8673 EFC3/T17.1.29. 28 SLOT ARMATURE DYNAMO WITH MORGANITE BRUSHES May we refer you to our EFC1/T13.12.28 asking for the removal of the dynamo from chassis 9-EX. This dynamo… | ||
| Scan069 | Instruction memo for the construction of a special S.S. Dynamo, a modified Phantom Dynamo. | ||
| View original record | X7660 TO RHO [crossed out] C. EFC. BY/RD3/ML.26.1.29. S.S.DYNAMO. Will you please put in hand 1 Dynamo to the following particulars:- ARMATURE - SEC:8070:- All standard material to L.O.P. D.71653 but… | ||
| Scan070 | Modifications to dynamos to improve charging current at high speeds. | ||
| View original record | EFC. Hs. ) E. Da. By. ) from R. SECRET c. SG. Wor. PN. CWB. X7660 R3/M27.1.29. REC'D AT WW. 30.1.29 SS. ON G4. ELECTRICAL EQUIPMENT X.7660. X.8664. X.5663 DYNAMOS. It is understood that the only… | ||
| Scan071 | Requesting a new commutator and bearing be fitted to a 28 slot Dynamo L. | ||
| View original record | X8673 To FHC. from EFC. EFC4/T1.2.29. DYNAMO L. (28 slot) We should be glad if you could have a new commutator and bearing fitted to this dynamo, the one at present on the machine being loose. The… | ||
| Scan072 | Dynamo output in response to sales department concerns and increased electrical demand. | ||
| View original record | To R. from EFC. c. SG. CWB. c. Cx. PN. c. Wor. E. x7660 EFC1/T5.2.29. x8664 DYNAMO OUTPUT. Further to our EFC2/T1.2.29, there appears to be some anxiety on the part of Sales in regard to the output of… | ||
| Scan073 | Increasing machine output, weight considerations, and the inclusion of a green lamp indicator in the chassis electrical system. | ||
| View original record | Contd. -2- EFC/T5.2.29. output with the same cutting in. For instance, it is estimated that in the extreme cases, with an additional 9 lbs. on the machine, making the weight 40 lbs., we could produce… | ||
| Scan074 | Recommending the standardisation of Morganite Grade EG2 brushes for Phantom and S.E. dynamos following successful 10,000-mile testing. | ||
| View original record | X8673 To R. from EFC. c. SG. E. c. Ds. Wor. c. Ev. EFC1/T7.2.29. MORGANITE GRADE EG2 BRUSHES FOR PHANTOM AND S.E. DYNAMOS X7670 We have run these brushes experimentally for some considerable time with… | ||
| Scan075 | 10,000-mile test of Morganite EC2 dynamo brushes. | ||
| View original record | PB.37 EFC. COPIES. Contd. 10,000 MILES TEST OF MORGANITE EC2 BRUSHES. A set of the above brushes was fitted to dynamo I on 13.4.28, together with a 28 slot armature, and the output set to half way… | ||
| Scan076 | Experimental record sheet tracking mileage and performance tests for Morganite Brushes EG2. | ||
| View original record | ELECTRICAL EXPERIMENTAL RECORD SHEETS X.&No:- X8673 Morganite Brushes EG2 Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total miles.… | ||
| Scan077 | Dynamo output, weight reduction, and lighting for a chassis. | ||
| View original record | EFC. H.J. ) FROM R. D.A. E. ) (At Le Canadel.) X7660 SECRET. ? R2/M8.2.29. REC'D AT WW. 11.2.29. SS. CHASSIS. DYNAMO OUTPUT. X.7660 We must not add weight to this chassis, and we must work hard to… | ||
| Scan078 | Specifications for dynamos on 'SS' chassis, detailing differences for test and production models. | ||
| View original record | X7660 X.7660 - DYNAMOS FOR 'SS' CHASSIS. For 10,000 miles test chassis : Opposite rotation machine fitted with Morganite E.G.2. grade brushes with 45° bevel, machine otherwise standard with thick… | ||
| Scan079 | Directive to test Morganite dynamo brushes as an alternative to Le Carbone brushes for 20 HP & 40/50 HP chassis. | ||
| View original record | X8673. D Dept. O.O. EFC. By 5/G1 3.2.29. 20 HP. & 40/50 HP. CHASSIS - BRUSHES FOR DYNAMO X.7670 X.5670. X.8673. In EFCL/T4 7.2.29 EFC. confirms that EG2 Morganite brushes are satisfactory as… | ||
| Scan080 | Letter from a supplier confirming various grades of brushes have been sent for testing purposes. | ||
| View original record | x8673 CONTRACTORS TO THE ADMIRALTY, WAR OFFICE, POST OFFICE, &c. Suppliers to the Principal Railways, Tramways, Corporations and Electric Light and Power Undertakings throughout the World. CARBON… | ||
| Scan081 | Specifications for 'LE CARBONE' dynamo brushes submitted for trial. | ||
| View original record | Messrs. Rolls Royce Ltd. -2- 13th February,1929 "LE CARBONE" Dynamo Brushes submitted for trial To Drawings D70966/67. with curved face, slot riveted connection, and flexible. 4..EG3502 } size 27.6 x… | ||
| Scan082 | Alternative Morganite and Le Carbone Z. brushes for the dynamo on 20 HP & 40/50 HP chassis. | ||
| View original record | X8673 D. Dept. [crossed out] O.C. [crossed out] EFC. BY5/G.13.2.29. 20 HP. & 40/50 HP. CHASSIS - BRUSHES FOR DYNAMO. X8673 X5670 In EFC1/T.7.2.29, EFC. confirms that EG.2 Morganite brushes are… | ||
| Scan083 | Letter to The Le Carbone Co. Ltd. acknowledging receipt of brushes and confirming they will be tested for quietness. | ||
| View original record | X.8673 EFCL/T. 14th February, 1929. The Le Carbone Co.Ltd., Coventry House, South Place, E.C.2. Dear Sirs, We are in receipt of your letter ref. R/EC. of the 13th inst., for which many thanks. We… | ||
| Scan084 | The standardisation of Morganite dynamo brushes and the timing of new mould production. | ||
| View original record | Hs RECEIVED 20 FEB 1929 X8673. EFC. BY/RD5/N.20.2.29. Re: Morganite Brushes for Dynamo. I understand the recent experiments on dynamo brushes having a greater angle on the spring pad are likely to be… | ||
| Scan085 | Recommendations for an intermediate dynamo armature between the standard and higher output versions. | ||
| View original record | X6004. BY. from EFC. EFC1/LG20.2.29. X5663 DYNAMO OUTPUT. X6003 X8664 Herewith please receive copies of my report EFC2/T1.2.29, and R's memo R2/M8.1.29, also copy of Sg4/CM7.5.28. In accordance with… | ||
| Scan086 | Experiments on Morganite brushes for the 40/50 dynamo and proposing further road tests. | ||
| View original record | To BY. from EFC. c. to BY/RD. X8673 EFC3/LG21.2.29. X. 8673 - MORGANITE BRUSHES FOR 40/50 DYNAMO. In reply to BY/RD5/N20.2.29. Our bench experiments on brushes indicate that brushes having an… | ||
| Scan087 | Design of an intermediate output armature, focusing on slot count and conductor sizes to reduce noise. | ||
| View original record | X 6004 BY. from EFC. c. to BY/RD. EFC4/LG21.2.29. X 5663 INTERMEDIATE OUTPUT ARMATURE. X 6003 X 8664 As referred to in our EFC1/LG20.2.29 we have now looked closely into the matter of an intermediate… | ||
| Scan088 | Discussion and recommendation for an experimental 24 slot Phantom armature. | ||
| View original record | -2- (1) Though the total iron armature section is somewhat less than in the 32 slot case, the copper résistance is less to a much greater extent, thus providing a better alround performance. (2) There… | ||
| Scan089 | Urgent internal memo requesting the fitting of dynamo L to car 14-EX for testing a new brush design. | ||
| View original record | To RHC. from EFC. X8673 EFCL/LG1. 3. 29. Would you kindly have dynamo L (herewith) fitted to car 14-EX in place of the early type of machine at present thereon. This is rather urgent as a new design… | ||
| Scan090 | Dynamo output and proposing the instruction of three intermediate output dynamos to fix battery charging issues. | ||
| View original record | BY/FD. EFC. HS. X7660 BY8/G.4.3.29. DYNAMO OUTPUT. X8664 Referring to R2/M8.2.28. and EFC's memo (EFC4/LG. 21.2.29. and EFC2/T.1.2.29.) I consider that we should, immediately we get an opportunity,… | ||
| Scan091 | Specifications for dynamos on the 'SS' chassis for both test and production models. | ||
| View original record | E.T.C. X7660 X.7660 - DYNAMOS FOR 'SS' CHASSIS. For 10,000 miles test chassis : Opposite rotation machine fitted with Morganite E.G.2. grade brushes with 45° bevel, machine otherwise standard with… | ||
| Scan092 | Urging the instructioning and testing of intermediate output dynamo armatures due to insufficient charge issues. | ||
| View original record | X 6004. BY. from EFC. c. BY/RD. c. Hs/AJL. EFC2/T4.4.29. INTERMEDIATE OUTPUT DYNAMO ARMATURES. We should like to urge with you the instructioning of the intermediate output armatures as dealt with in… | ||
| Scan093 | Trials of intermediate armatures to ensure interchangeability with standard carcasses. | ||
| View original record | Contd. -2- EFC2/T4.4.29. It will be necessary for us to make trials of the first intermediate armature of each size in standard carcases to obtain the correct relation of commutator to armature… | ||
| Scan094 | Specification for the electrical operation of a dynamo for the R.R. S.S. car. | ||
| View original record | X7660 6.4.29. X. 7660. SPECIFICATION OF ELECTRICAL OPERATION OF DYNAMO FOR R.R. S.S. CAR. The dynamo, after being run on load on the bench, clamped by means of metal clamps to an iron bed plate, for… | ||
| Scan095 | Specifications for dynamo performance under fully hot conditions, including a table of speed, voltage, and output. | ||
| View original record | Contd. -2- Up tot this point (1650 R.P.M.) the ampere output speed curve should lie completely above that given by the following figures, the dynamo operating terminal voltage being adjusted to be… | ||
| Scan096 | Discovered positional fault with the commutator on the first 'Inveried' type S.S. Dynamo armature. | ||
| View original record | RHC. from EFC. X7660 EFC1/T8.4.29. FIRST S.S. DYNAMO WITH ARMATURE OF THE 'INVERIED' TYPE. Though the drawing for this armature appears O.K., the commutator position in relation to the armature has… | ||
| Scan097 | Specification of inspection and test for Phantom & S.S. dynamos with 28 slot armatures and tunnel stampings. | ||
| View original record | Issued 19.4.29. X7666 EFC/TLC.4.29. R.R. PHANTOM & S.S. DYNAMOS WITH 28 SLOT ARMATURE WITH TUNNEL STAMPINGS. SPECIFICATION OF INSPECTION AND TEST. VERSION 9. Applicable to dynamos as above. Upon… | ||
| Scan098 | Instructions for dynamo testing, covering pigtail conductors, insulation resistance, and brush bedding procedures. | ||
| View original record | -2- Contd (e) The connections of the pigtail conductors are not in any way damaged. (f) The initial bedding of the brush shows partial contact reasonably well distributed over the working surface.… | ||
| Scan099 | Dynamo testing procedures covering brush bedding, running on load, and checks for mechanical and electrical noise. | ||
| View original record | -3- Contd. circumferentially, and between the bottom of the holder and the commutator, do not exceed the specified amounts. Also that the bedding of the spring on the bevel of the brush and of the… | ||
| Scan100 | Inspection and testing procedures for a dynamo, including physical checks and insulation tests. | ||
| View original record | -4- Contd. (9) Examine also for rubbing armature, slack bearings, cracked insulation and final condition of commutator and brush surfaces, and see also that with the dynamo hot, the end cover can be… | ||
| Scan101 | Winding table for 20 HP or 40/50 HP armatures. | ||
| View original record | X7660 E.T.F. 11.4.29. WINDING TABLE. 20 H.P. OR 40/50 H.P. ARMATURES. 28/56/4. COM. BARS. | CONDUCTORS. | COM. BARS. | CONDUCTORS. | COM. BARS. 1 | 1 26 | 2 | 55 80 | 3 | 109 24 | 4 | 53 78 | 5 | 107… | ||
| Scan102 | Particulars of the winding and commutator setting for intermediate output armatures for 20 HP and 40/50 HP dynamos. | ||
| View original record | To BY. from EFC. c. BY/RD. X6004 EFC1/T17.4.29. INTERMEDIATE OUTPUT ARMATURES. Further to our EFC4/LG21.2.29, we now give further particulars of the winding and commutator setting of these two 24 slot… | ||
| Scan103 | Specification sheet for an armature detailing its construction and winding data. | ||
| View original record | X6004 ARMATURE :- 24/48/4. NO. OF SLOTS OR SECTIONS 24 NO. OF COILS OR COMM. BARS. 48 " " CONDUCTORS TO COMM. 96 " " CONDUCTORS 384 COILS PER SLOT 2 TURNS PER COIL 4 CONDUCTORS PER SLOT 16 SLOT PITCH… | ||
| Scan104 | Winding table for a 40/50 HP S.S. 6-volt armature with duplex or doubly-re-entrant wave winding. | ||
| View original record | X.7660 19.4.29. WINDING TABLE. 40/50 H.P. S.S. 6-VOLT ARMATURE (DUPLEX OR DOUBLY-RE-ENTRANT WAVE WINDING) X 1640 Com. bars. Conductors. Com. bars. Conductors. 1 1 + 26 + 28 55 + 80 + 55 109+ 22 + 26… | ||
| Scan105 | New armature scheme for a 6-volt dynamo intended for U.S.A. SS. models. | ||
| View original record | EY. from EFC. c. Ey/RD. EFCl/T19.4.29. 6-VOLT DYNAMO FOR U.S.A. SS. We have schemed out an armature for this dynamo which utilises the same armature core, commutator and winding step as the present… | ||
| Scan106 | Testing a new dynamo for an SS chassis and ordering new armatures. | ||
| View original record | x7660 To. RHC. C. EFC. BY/RD4/N.24.4.29. SS. CHASSIS DYNAMOS. By/RD3.ML.26-1-29 Some time ago we instructed you to put in hand a special dynamo for the above chassis to D.71999. This has now been done… | ||
| Scan107 | Confirming a modified armature winding diagram for a dynamo fitted to an S.S. chassis. | ||
| View original record | X7660 To BY/RD. from EFC. EFC1/LG24.4.29. We are now able to say that the modified armature winding diagram D. 71998 is correct for the inverted type of dynamo to be fitted to S.S. chassis giving, as… | ||
| Scan108 | The unsuitability of the current S.S. chassis dynamo and the plan to produce a new version. | ||
| View original record | X7660 RHC. from EFC. c. BY/RD. EFC4/T25.4.29. S.S. CHASSIS DYNAMO. X8664 Referring to BY/RD4/N24.4.29, we are of the opinion that the machine which we have in here and which is representative of S.S.… | ||
| Scan109 | Instructions regarding modifications to dynamos for the 21-EX and other SS chassis. | ||
| View original record | To. RHC. C. EFC. 17660 BY/RD1/N.26.4.29. SS. CHASSIS DYNAMOS. Further to our BY/RD4/N.24.4.29 and EFC4/T. 25.4.29. the position as I see it therefore is as follows:- (a) The dynamo for 21-EX should… | ||
| Scan110 | Instructions for manufacturing and modifying armatures and commutators for the SS Chassis Dynamo, with an attached list of blueprints. | ||
| View original record | To RHC, C. EFC. X6004 BY/RD8/M.16.5.29. X 6004. Re: SS. Chassis Dynamo. X. 7660 Will you please put in hand 3 armatures and commutators, intermediate output type, to Part List D.72238 - Armature and… | ||
| Scan111 | Extract from Mr. Hancock's report on a dynamo's performance. | ||
| View original record | 30.5.29. Extract taken from Mr. Hancock's report of 2.5.29. X.7660. DYNAMO. Apart from a slight brush noise it has been quite satisfactory. | ||
| Scan112 | Request to draw three armature slot diagrams for dynamos and a sequence starter motor. | ||
| View original record | X7660 By/RD. from EFC. EFC3/AD7.6.29. ARMATURE SLOT DIAGRAMS. X7660 Will you please arrange to have drawn out at your convenience, 3 armature slot diagrams similar to D.70974/5. Of two of these each… | ||
| Scan113 | The performance and testing of higher and intermediate output dynamos for 40/50 HP and 20 HP chassis. | ||
| View original record | X.6064 R. from EFC. c. Sg. c. E. By. EFCL/AD5.7.29. x 5663 HIGHER AND INTERMEDIATE OUTPUT DYNOS. x6003 X6064 We have previously reported particulars and output characteristics of both 40/50 and 20… | ||
| Scan114 | The development and planned testing of new experimental armatures for chassis. | ||
| View original record | -2- these have been developed with a view to their becoming the standard armatures for both chassis if they shew satisfactory performance. The present position is, that we have just received for… | ||
| Scan115 | The production and supply of higher output dynamos for various car models. | ||
| View original record | X6004. EFC. BY/RD5/N.6.7.29. X5663 X6002. X8664. Re: Higher Output Dynamos. Referring to your EFC2/AD4.7.29, we would say that we have instructed three higher output machines suitable for the 20 h.p.… | ||
| Scan116 | Standardisation of dynamo brushes, proposing a Morganite EG2 grade as an alternative to Le Carbone grade. | ||
| View original record | RR 755 REVISED (10H) (D.C. 777-29-2-28) MS C. LTD X8673 Completed 9/7/29. STANDARDISATION of CHASSIS PARTS. Date 14.3.29 Description of Parts. MORGANITE EG2 GRADE BRUSHES FOR 40/50 & 'S.S.' DYNAMOS… | ||
| Scan117 | Calculations and test results for setting angles on an intermediate output S.S. dynamo. | ||
| View original record | X6004. X.8665. INTERMEDIATE OUTPUT S.S. DYNAMO. N angle determined by F.J.A. geometrically from winding diagram = 55.5° B angle required by C.A.P. tentatively for this machine = 9° Therefore M angle… | ||
| Scan118 | Electrical experimental record sheet for the testing of Morganite Brushes EG2 with a 45° bevel. | ||
| View original record | X8673. ELECTRICAL EXPERIMENTAL RECORD SHEET Date:- 22-2-29 X.8673 Morganite Brushes EG2 with Bevel of 45° | Date on. | Location | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. |… | ||
| Scan119 | Electrical experimental record sheet for Morganite E.G.2 brushes with a 45° bevel. | ||
| View original record | X8673 1-3-29 ELECTRICAL EXPERIMENTAL RECORD SHEETS. Morganite E.G.2 Brushes With 45° Bevel. Date on. Location. Date off. REMARKS. Miles reading start. Miles reading finish. Miles covered. Total miles.… | ||
| Scan120 | Request for the overhaul of a 40/50 dynamo bench-rig motor commutator due to sparking and black patches. | ||
| View original record | X 7660. RHC. from EFC. EFC1/AD27.7.29. We should be pleased if you would arrange for the commutator of our 40/50 dynamo bench-rig motor to be skimmed up, the mica between the segments under-cut, and… | ||
| Scan121 | Request to remove dynamo SS2 from vehicle 21-EX for bench testing and replace it with dynamo SS3. | ||
| View original record | X7660 RHC. from EFC. c. Hs/AJL. EFCL/AD13.8.29. Will you please have dynamo SS2 at present fitted to 21-EX, taken off and returned to us, and dynamo SS3 herewith fitted in its place. Dynamo SS2 has… | ||
| Scan122 | Comparison of S.M.M.&T and R.R. standards for Dynamo Brush Design. | ||
| View original record | RR 238 (150 BKS.) (DB 461-8-12 24) MP 306975 X8673 ROLLS-ROYCE LTD. INSTRUCTIONS. To E F C. Order No. PD 40. Customer's No. X 8673. Standardised Details of Dynamo Brush Design. Below are given the… | ||
| Scan123 | Instruction sheet detailing specifications and tolerances for brushes, comparing S.M.M.+T and R.R. standards. | ||
| View original record | RR 238 (150 BKS.) (DB 461-8-12 24) MP 306975 ROLLS-ROYCE, LTD. INSTRUCTIONS. To_____________________________________19___ Order No. PD40 (2) Customer's No.__________________ | Detail. | S.M.M.+T… | ||
| Scan124 | Instructions for modifying S.S. Intermediate Output Armatures by adjusting commutator connections and angles. | ||
| View original record | X6004 RHC. from EFC. EFC1/AD21.9.29. 6004 X.8665. S.S. INTERMEDIATE OUTPUT ARMATURES. We are handing to Mr.Tooby, two of the S.S. intermediate output armatures. Will you please arrange for the… | ||
| Scan125 | Tests to determine the optimal brush and winding angles for an intermediate output S.S. Dynamo. | ||
| View original record | X6004 By. from EFC. c. Ry/RD. EFC1/AD23.9.29. 6004 X.8665. INTERMEDIATE OUTPUT S.S. DYNAMO. We have now completed careful tests with the three intermediate output S.S. armatures in standard S.S.… | ||
| Scan126 | Standardising a machine with different output settings based on control brush angles for the S.S. chassis. | ||
| View original record | -2- for 10,000 mile test with a view to standardisation, but new commutator end plates will be required. In regard to the position of the control brush, the higher output setting requires a control… | ||
| Scan127 | Instruction to check the M angle of a dynamo armature before winding due to a slight discrepancy. | ||
| View original record | X6004 By/RD. from EFC. EFC5/AD24.9.29. 6004 X.8665. INTERMEDIATE OUTPUT S.S. DYNAMO. Further to our EFC1/AD23.9.29, owing to the slight discrepancy in the M angle, would you please instruct that we… | ||
| Scan128 | Follow-up letter from Le Carbone regarding a trial of dynamo carbon brushes. | ||
| View original record | X8673 CONTRACTORS TO THE ADMIRALTY, WAR OFFICE, POST OFFICE, &c. Suppliers to the Principal Railways, Tramways, Corporations and Electric Light and Power Undertakings throughout the World. LE CARBONE… | ||
| Scan129 | Letter to The Le Carbone Co. declining to test experimental brushes due to other priorities and a lack of issues with the standard ones. | ||
| View original record | X8673. EFCA/AD. 27th September, 1929. The Le Carbone Co. Coventry House, South Place, London, E.C.2. Dear Sirs, Answering your letter ref.1622/P. of the 26th inst. we regret to have to inform you of… | ||
| Scan130 | Request to manufacture three armatures for a 40/50 HP Chassis Dynamo with an intermediate output. | ||
| View original record | X6004 RHC. EFC. BY/RD9/N.2.10.29. Re: 40/50 HP. Chassis Dynamo - Intermediate Output. Will you please put in hand three armatures to our Part List D.72238, blueprints of which are already in your… | ||
| Scan131 | Inspection, records, and despatch checklist for dynamo particulars. | ||
| View original record | X7660. 23.10.29. X.294. DYNAMO PARTICULARS. X.5660 X.7660 INSPECTION. Insulation End-plates etc. tight Boxes axial " horizontal " to comm. clearance " radial Brush bedding " freedom " circumferential… | ||
| Scan132 | Test report on Morganite EG2 brushes with an increased bevel to reduce noise. | ||
| View original record | RR 238 (150 BKS.) (D9 451-8-12-24) MP 306975 X8673. ROLLS-ROYCE LTD. INSTRUCTIONS. To: EFC Order No. PD 41 Customer's No. Nov 25th 1929 X8673. Tests of Morganite EG2 Brushes with Increased Bevel. Car… | ||
| Scan133 | Test report on dynamo brushes detailing issues of irregular charging, sticking, sparking, and heavy wear. | ||
| View original record | RR 238 (150 BKS.) (DB 431-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. 19 To Order No. PD 41 (2) Customer's No. The results of these tests were as follows:- Dynamo L on 14 EX. These brushes were… | ||
| Scan134 | Instruction sheet detailing a report on dynamo brush wear after extensive mileage. | ||
| View original record | ROLLS-ROYCE LTD. INSTRUCTIONS. To___________________________19__ Order No. PD 41 (3) Customer's No.____________ Brush wear was as follows:- Position | Positive | Negative | Control Inner. | .010" |… | ||
| Scan135 | Brush wear and performance, concluding that a new type is less reliable and not recommended. | ||
| View original record | RR 238 (150 BKS.) (D3 451-B 12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To__________________________19___ Order No. PD 41 (4) Customer's No.____________ Brush-dust deposit was not excessive but… | ||
| Scan136 | Instruction sheet comparing the properties of different grades of Morganite and Le-Carbone brushes. | ||
| View original record | ROLLS-ROYCE LTD. INSTRUCTIONS. To: EFC Order No.: PD42 Customer's No.: X8673. Special Grade of Morganite Brushes; EG6630. As the result of enquiries concerning details of the above grade of brush, the… | ||
| Scan137 | Confirming the use of a standard dynamo for the 18-EX chassis. | ||
| View original record | X7660 RHC. from EFC. EFC3/AD26.11.29. X.7660. DYNAMO FOR 18-EX. As we now understand that a new engine unit complete with dynamo has been obtained for 18-EX, and that the armatures instructed in… | ||
| Scan138 | Dynamo output insufficiency and battery charging for 20 HP and Phantom II models. | ||
| View original record | X7660. To R. From EFC. c. Sg. c. Wor. By. c. Hs. PN. EFC3/AD28.11.29. X.5664. X.8665. X5663 X7660 X8664 X5661 DYNAMO OUTPUT 20 HP. AND PHANTOM II REF: R1/M16.11.29 and R1/M21.11.29. It is agreed that… | ||
| Scan139 | The development and specifications of Intermediate Output dynamos, detailing 'major output' and 'minor output' settings. | ||
| View original record | -2- EFC3/AD28.11.29 contd. reported. A number of these machines have been supplied to clients in special cases. They were initiated as a result of our report EFC3/T27.2.28 and your memo R5/M9.3.28. As… | ||
| Scan140 | Dynamo output tests for the 20 HP model compared to the Phantom model. | ||
| View original record | EFC3/AD28.11.29 contd. -3- In the 20 HP. case tests so far indicate that whereas the cutting in and minor output can be suitable and as described for the Phantom case, the possible major output will… | ||
| Scan141 | Request for an up-to-date Standard Phantom II dynamo for comparison testing against an experimental machine. | ||
| View original record | Sft/Mr Brock. X.7660. EFC2/ADL 3.12.29. X.7660. UP-TO-DATE STANDARD PHANTOM II DYNAMO. It is important at this stage, especially now that there is considerable discussion with regard to dynamo output,… | ||
| Scan142 | Performance comparison table for PI and PII type dynamos with 56 coils and thinner armature stampings. | ||
| View original record | X7660 40/50 J.B. MACHINES. 56 Coils and Thinner Armature Stampings PI and PII X.7660. PERFORMANCE COMPARISON OF DYNAMOS. (on routine procedure of 1.4.27) | Date. | Dynamo. | Particulars and remarks |… | ||
| Scan143 | Performance comparison data table for various dynamo models. | ||
| View original record | -2- 40/50 C.B. MACHINES. PERFORMANCE COMPARISON OF DYNAMOS. (On routine procedure of 1.4.27) | Dynamo. | (4) Speed for 10V. 14V. 17V. | (5) Speed for O amperes. | Peak Speed. Amperes. | 2500 RPM.… | ||
| Scan144 | Performance comparison table for various dynamos, based on a routine procedure. | ||
| View original record | (03) 4_60 N.B. DYNAMOS. PERFORMANCE COMPARISON OF DYNAMOS (On routine procedure of 1.4.27). Dynamo. (8) Speed for 10V. 14V. 17V. Speed for 0 amperes at 12.4 V. (9) Peak. Speed. Amperes. 2500 RPM.… | ||
| Scan145 | Urging the production of three intermediate Phantom II armatures due to insufficient dynamo output. | ||
| View original record | .X6004 RHC. from EFC. EFC6/AD1 3.12.29. 6004 X.8665. PHANTOM II INTERMEDIATE OUTPUT DYNAMOS. We would like to urge with you the production of the three intermediate Phantom II armatures as instructed… | ||
| Scan146 | Graph of 40/50 H.P Dynamo Output Curves. | ||
| View original record | 40/50 40/50 H.P DYNAMO OUTPUT CURVES AMPERE OUTPUT OPERATING VOLTAGES SPECIFIED CURVE OF OUTPUT REQUIREMENTS FOR 40/50 H.P S.S. DYNAMO 1. REPRESENTATIVE CURVE OF N.B. STANDARD (29 SLOT ARMATURE)… | ||
| Scan147 | Instructing an experiment with reduced gauge field coil windings for 20 HP and Phantom dynamos. | ||
| View original record | X.6008. By. from EFC. c. By/RD. EFC7/ADL3.12.29. X 6007 20 HP. AND PHANTOM DYNAMOS. X.6008 FIELD COIL WINDINGS OF REDUCED GAUGE. In connection with the question of dynamo output, we are anxious at… | ||
| Scan148 | Performance of dynamo battery systems in relation to demand for the Phantom II and 20 Hp models. | ||
| View original record | X6004. To R. from EFC. c. Sg. c. Wor. E. c. Da. PN. By. EFC2/AM4.12.29. X294 X6003 X6004 X8780. PERFORMANCE OF DYNAMO BATTERY SYSTEM IN RELATION TO DEMAND. References R1/M21.11.29, PN1/WT2.12.29,… | ||
| Scan149 | Dynamo output, control limitations, and safety margins related to heating. | ||
| View original record | -2- EFC2/AD14.12.29 contd. which means of practical necessity cases where there is no control, the great limitation of output as mainly determined by control brush setting, is that of armature heating… | ||
| Scan150 | Dynamo performance and requirements for Australian driving conditions. | ||
| View original record | -3- EFC2/AM4.12.29 contd Mr.Peat's memos concerning the higher output dynamo, dated 4.7.28, still exists :- "As a matter of fact I do not think the type of dynamo mentioned (in paragraph a) would be… | ||
| Scan151 | Dynamo cut-in speed and the instability of the dynamo-battery-load system, leading to overcharging or undercharging issues. | ||
| View original record | EFC2/AM4.12.29 contd. -4- We consequently recommend that we should be cautious in too far increasing the road speed at which dynamo cut-in occurs. It will be gathered from the above that in our… | ||
| Scan152 | Battery consumption, charging issues, and the need for external automatic dynamo control. | ||
| View original record | -5- EFC2/AD14.12.29 contd. Further, lamp consumption and particularly starter consumption is not reduced proportionally and the rate of loss of charge of the battery is accelerated. Particularly is… | ||
| Scan153 | Description of various dynamo output curves shown on a blueprint for a 20 HP unit. | ||
| View original record | -6- EFC2/AH4.12.29 contd. The curves shown on the blue print for 20 HP. comprise :- Firstly, our original specified curve of output requirements of 20 HP. dynamo. Secondly, the representative output… | ||
| Scan154 | Analysis of intermediate output dynamo performance curves and investigation into control brush spring pressure. | ||
| View original record | -7- EFC2/AM4.12.22 contd. It will be noted that the intermediate output curve is quite a good curve with the exception of its rate of fall at high speeds which is rather more than in the other two… | ||
| Scan155 | Comparison of output curves for various armature machine configurations for Phantom I and II models. | ||
| View original record | -8- Secondly, representative output curve of Phantom I standard 57 coil 29 slot armature machine (Labelled 1). Thirdly, representative output curve of Phantom II 56 coil 28 slot thinner armature… | ||
| Scan156 | Modifying windings for 20 HP and Phantom II dynamos to improve performance at high speeds. | ||
| View original record | -9- EFC2/ADL4.12.29 contd. The question of modification of existing arrangements of machines to keep up the curve at high speeds rather higher than it is in some cases at present, is having… | ||
| Scan157 | Graph showing output curves for a 20 HP dynamo. | ||
| View original record | M (High Output Armature) 7° 126° July '28 N (Inter-Output) 7½° 123° at 80°C 20 H P REPRESENTATIVE OUTPUT CURVE OF STANDARD 20 H.P DYNAMO AT 80°C SPECIFIED CURVE OF OUTPUT REQUIREMENTS FOR 20 H.P… | ||
| Scan158 | Blueprint graph showing 40/50 HP Dynamo Output Curves. | ||
| View original record | AMPERE OUTPUT OPERATING VOLTAGES 40/50 SPECIFIED CURVE OF OUTPUT REQUIREMENTS FOR 40/50 HP SS DYNAMO I=0.2 40/50 H.P DYNAMO OUTPUT CURVES. 1. REPRESENTATIVE CURVE OF NB STANDARD (29 SLOT ARMATURE)… | ||
| Scan159 | Performance and future development of the dynamo battery system. | ||
| View original record | X6004 To EFC. from Sg. Copy to Wor. E. Dq. PN. BY. Sg13/E19.12.29. X.294 X.5664 X.8665 X.8780. X 6003 X 6004 PERFORMANCE OF DYNAMO BATTERY SYSTEM IN RELATION TO DEMAND. I have read your… | ||
| Scan160 | Dynamo capacity and proposing a two-way switch scheme for summer and winter charging. | ||
| View original record | Sg.13/E19.12.29 contd. -2- should not be led into the feeling that we had overcome our difficulties in design in connection with this very important subject of adequate dynamo capacity, merely by the… | ||
| Scan161 | Performance of dynamo battery systems in relation to demand, and the issues of under and over-charging the battery. | ||
| View original record | To Sg. from EFC. To E. To PN. c. Wor. Ey. c. Da. EP. X6004 EFC3/AD27.12.29. PERFORMANCE OF DYNAMO BATTERY SYSTEM IN RELATION TO DEMAND. X.294 X.8780 | ||
| Scan162 | Half-charge switching idea for the dynamo and battery charging system. | ||
| View original record | -2- EFC3/AD27.12.29 contd. In our EFC5/T26.7.28 we referred to the half charge switching idea, which is now again to the fore, in the following terms :- "One other point - many people advocate the use… | ||
| Scan163 | Auto charge control system and comparing it to other vibrator control systems. | ||
| View original record | EFC3/AD27.12.29 contd. -3- be looking into in detail with a view to putting to R. the case exactly. The remarks contained in the opening paragraphs of Mr.Elliott's memo E1/M21.12.29 fully confirm our… | ||
| Scan164 | Comparison of vibrator control systems, including carbon plate regulators and metallic 'dithering' contact points. | ||
| View original record | EFC3/AD27.12.29 contd. -4- scheme also is subject to what appears to us the one objection to such schemes, namely the lightness of the pressure on the contact points during normal working. With regard… | ||
| Scan165 | Dynamo noisiness and a proposed solution using bimetal thermostat control. | ||
| View original record | EFC3/AD27.12.29 contd. -5- seemed to be completely spoilt by the noisiness of the dynamo, which feature seemed to have had little or noattention in the design of that unit. We will look up this… | ||
| Scan166 | Move to an intermediate output dynamo and a reliable battery charge indicator. | ||
| View original record | X6004 EFC. } FROM R. PN. } (At Le Canadel). R2/M28.12.29. C. to Sg. Wor. E. C. to Da. By. Hs. ~~X.5664.~~ X6003 ~~X.8665.~~ X6004 X.1589. X.4040. CAR DYNAMOS AND CHARGE INDICATOR. I think that at once… | ||
| Scan167 | Instruction to replace an obsolete dynamo (SS1) with a medium output version (SS2) on chassis 22-EX. | ||
| View original record | X 6004 RHC. from EFC. c. Hs/AJL. EFC4/AD30.12.29. X.6004. MEDIUM OUTPUT 40/50 DYNAMO. We now hand you dynamo SS2. fitted with a medium output type of armature. Will you please have this machine fitted… | ||
| Scan168 | The completion of Phantom II intermediate output dynamos and armatures. | ||
| View original record | X6004 RHC. from EFC. EFC2/AD3.1.30. 6004 X.8665. PHANTOM II INTERMEDIATE OUTPUT DYNAMOS. May we again urge with you the rapid completion of the three intermediate output Phantom II armatures as… | ||
| Scan169 | The differences and testing procedures for new intermediate output dynamos for 20 HP and 40/50 HP models. | ||
| View original record | By. from EFC. c. Wor. X6004 EFC3/AD3.1.30. [Struck through: X6003 X.5664] [Struck through: X6004 X.8665] INTERMEDIATE OUTPUT DYNAMOS. In view of the first paragraph of R2/M28.12.29. will you please… | ||
| Scan170 | Confirming receipt of a previous letter and issuing instructions for the production of one dozen intermediate output dynamos for testing. | ||
| View original record | X6004 To R. from EFC. c. Sg. c. PN. c. E. Wor. c. By. Da. EFC4/AD3.1.30. X6003 X.5664 X6004 X.8665 INTERMEDIATE OUTPUT DYNAMOS We have received your R2/M28.12.29, and are at once taking all steps to… | ||
| Scan171 | Modifications and assembly instructions for an intermediate output dynamo for road testing. | ||
| View original record | X6004. To RHC, from EFC. EFC1/AD6.1.30. 6004 X.8665. INTERMEDIATE OUTPUT DYNAMO. In connection with the above we now hand you dynamo carcase SS.7. together with some dynamo insulating pieces in Super… | ||
| Scan172 | To Mr. Brock from EFC revising the dynamo test programme and cancelling a previous arrangement. | ||
| View original record | X7660 Sft/Mr Brock, from EFC. EFC2/AD10.1.30. X.5660 DYNAMOS FOR TEST. X.7660 Now that we have received from you the 40/50 HP. dynamo for test we should like to cancel the arrangement made in our… | ||
| Scan173 | Internal works order for two sets of parts for 40/50 and 20-HP dynamos. | ||
| View original record | X.6008 EFC. BY/RD1/DM.10.1.30. X6007 X.6008 40/50 & 20-HP. Dynamo. (Field Winding 20 S.W.G. .036 dia.) Will you please put in hand 2 sets of each of the following:- 40/50 Dynamo complete as under:-… | ||
| Scan174 | Modifying the 40/50 HP and 20 HP dynamos with finer field windings. | ||
| View original record | X6008. RHC. from EFC. EFC3/ADL3.1.30. X6007 X.5660 X6008 X.8660 40/50 HP. AND 20 HP. DYNAMO WITH FINER FIELD WINDINGS. The question of modification of dynamo output is very much to the fore at the… | ||
| Scan175 | Production test report for a Dynamo AH.35.SS, detailing two points of failure. | ||
| View original record | X7660. Mr. Brock. from EFC. EFC2/AD22.1.30. X.7660. PRODUCTION TEST OF DYNAMO AH.35.SS. We have now returned the above machine duly tested by us. This machine is found to be O.K. in all respects… | ||
| Scan176 | Request to check and skim an intermediate output armature due to unevenness causing brush chattering. | ||
| View original record | X6004. RHC. from EFC. EFC2/AD24.1.30. 6004 X.8665. INTERMEDIATE OUTPUT ARMATURE. We are sending to you one of the above type of armatures, and we should be pleased if you would have the commutator… | ||
| Scan177 | Specifications for a higher output dynamo for the Prince of Wales' car 115-WJ. | ||
| View original record | x 7660. By. from EFC. c. Mx. EFC3/AD28.1.30. X.8664. X.7660. DYNAMO FOR PRINCE OF WALES CAR 115-WJ. This dynamo will be of the Phantom II higher output type, i.e. it will bear the same relation to the… | ||
| Scan178 | Specification for a dynamo for the Prince of Wales' car 115-WJ. | ||
| View original record | X8664b By. from EFC. c. Mx. EFC3/AD28.1.30. X.8664b X.7660. DYNAMO FOR PRINCE OF WALES CAR 115-WJ. This dynamo will be of the Phantom II higher output type, i.e. it will bear the same relation to the… | ||
| Scan179 | Urgent internal memo regarding the swapping and fitting of dynamos on test vehicles. | ||
| View original record | URGENT. X6004 RHC. from EFC. c. Hs/AJL. EFC2/AD30.1.30. 6004 X.6665. DYNAMOS. 22-EX and 23-EX. Will you please arrange to have dynamo No.SS2. removed from 22-EX and sent in to us. The machine already… | ||
| Scan180 | Testing dynamo SS.7, noting noise issues and harsh brushes, and requesting further tests on a rig. | ||
| View original record | X.6004. To EFC. 3.2.30. We have run dynamo SS.7 on a chassis .70 miles and it seems O.K. for moan and sing. The brushes seem very harsh and scratchy. The output we did not take as we had not got an… | ||
| Scan181 | Modification of an intermediate output dynamo with a new armature and bracket. | ||
| View original record | X 6004. To RHC. from EFC. EFC6/AD4.2.30. 6004 X.8665. INTERMEDIATE OUTPUT DYNAMOS. We now hand you dynamo SS2, together with the second of the three new armatures you recently had made for us. Will… | ||
| Scan182 | Instructions on 48 coil armature dynamos for 20HP and 40/50HP cases, detailing changes to brush angles and pole pieces. | ||
| View original record | X6004 By. from EFC. EFC6/AD5.2.30. X6003 X6004 48 COIL ARMATURE DYNAMOS. This constitutes a further instruction to our report EFC1/AD5.2.30 shortly being issued, our ideas of the best steps to be… | ||
| Scan183 | Arrangement for testing and standardisation of 20 HP and 40/50 HP machines. | ||
| View original record | -2- Will you please arrange for two machines each of 20 HP. and 40/50 HP. (i.e. two of the original 12 asked for) to be arranged in this way, all of these four machines to be handed to us for test… | ||
| Scan184 | Performance of a modified dynamo for the Prince of Wales car 115-WJ. | ||
| View original record | By. from EFC. c. Mx. X 8664 b. EFC7/AD5.2.30. X.8664b. DYNAMO FOR PRINCE OF WALES CAR 115-WJ. This machine, an ordinary standard production Phantom II machine provided with Mr.Brocks modification to… | ||
| Scan185 | The dynamo for the Prince of Wales' car, 115-WJ. | ||
| View original record | X8664b. To EP. from EFC. EFC2/AD8.2.30. We attach for your information copies of information/memos ref. EFC3/AD28.1.30 and EFC7/AD5.2.30 regarding dynamo for Prince of Wales car 115-WJ. EFC. | ||
| Scan186 | Methods to increase dynamo output for the Phantom and 20 HP models. | ||
| View original record | X6004 To R. from EFC. c. Sg. c. Wor. E. c. Da. Ry. c. PN. EP. EFC1/ADL0.2.30. X.8664. INTERMEDIATE AND HIGHER OUTPUT X.5663. X.8665.X6004 DYNAMOS PHANTOM AND 20 HP. X.5664.X6003 The problem of… | ||
| Scan187 | The development and advantages of a 48 coil armature machine over standard and higher output types. | ||
| View original record | -2- EFC1/AMO.2.30 contd. The 48 coil armature of the "intermediate" output type offers certain advantages over the standard and "higher" output type 56 coil armatures from a manufacturing point of… | ||
| Scan188 | Dynamo and armature modifications and testing for 20 HP, 40/50 HP, and Phantom models. | ||
| View original record | EFC1/ADLO.2.30 contd. -3- circuit to produce higher output is now available and will be put on the 20 HP. 10,000 mile test chassis. In the 40/50 HP. case we have one 48-coil armature machine arranged… | ||
| Scan189 | The production of higher output dynamos for the Phantom II, comparing 48-coil and 56-coil designs. | ||
| View original record | X8664b. By. from EFC. EFC4/AD10.2.30. X.8664b. HIGHER OUTPUT PHANTOM II DYNAMOS. It is now considered expedient to produce three higher output Phantom II dynamos similar to the one required for the… | ||
| Scan190 | Request for a new carcase and end bracket for a 48-coil armature dynamo, with instructions for modification. | ||
| View original record | X6004 RHC. from EFC. EFC5/AD10.2.30. 6004 X.8665. 48-COIL ARMATURE DYNAMOS. For one of the three 48-coil armatures you have recently produced for us we shall require a new carcase and end bracket from… | ||
| Scan191 | Complaints of dynamo brush noise and considering alternative brush grades. | ||
| View original record | X8673 COPY. PD.43 10.2.30. X.8673. DYNAMO BRUSH NOISE X.5670. As a result of complaints of brush noise on Phantom II dynamos, having occurred from time to time the possibility of obtaining an all… | ||
| Scan192 | Specification table for different grades of brushes, detailing their physical and electrical properties. | ||
| View original record | e2- Grade of Brush Spec.Res. ohms per In. cube Coeff. of Friction Contact at normal current density Approx. max. commutator speed. Ft. per min. Normal current density ampere Morganite Link 5. .00075… | ||
| Scan193 | The manufacture of 10 Intermediate Output Dynamos for the 40/50 Chassis. | ||
| View original record | X6004. To. Royce C. BFW. C. [Redacted] C. [Redacted] c. EFC. C. [Redacted] 40/50 Chassis. Dynamos. Will you please order the necessary material to manufacture 10 Intermediate Output Dynamos to the… | ||
| Scan194 | Letter to The Morgan Crucible Co. Ltd. regarding different grades of carbon brushes for chassis dynamos. | ||
| View original record | X.8673. EFC2/AD. 12th February, 1930. The Morgan Crucible Co.Ltd. Battersea Works, Church Rd. S.W.1. Dear Sirs, X.8673. Brush Grades for our Phantom II X.5670. and 20 HP. chassis dynamos. As you are… | ||
| Scan195 | Letter from The Morgan Crucible Company about dynamo brushes for the Phantom II and 20 HP chassis. | ||
| View original record | X8673. ea 2886 CODES, ABC 4TH 5TH & 6TH (5 LETTER) EDITIONS. A.I. LIEBER'S & WESTERN UNION (UNIV. & 5 LETTER EDIT.) & BENTLEYS. Inland Telegraphic Address, "CRUCIBLE, PHONE, LONDON" (2 words only… | ||
| Scan196 | Testing of a high output Phantom dynamo for the Prince of Wales' car. | ||
| View original record | X8664b. 19.2.30. To EFC. Herewith high output Phantom dynamo for Prince of Wales' car. Will you please test this as soon as possible. E.J.Brock. | ||
| Scan197 | Production test log for 56 coil higher output narrow brush machines of the SS type. | ||
| View original record | +4838 X 56 Coil Higher Output Machines. PRODUCTION TEST. 8664. b. 6088 X. R.R. EAC. DYNAMO X. do. (NARROW BRUSH MACHINES OF THE SS. TYPE) Date Dynamo (1) Remarks. (2)(3)(4) Remarks (5) Output at 1700… | ||
| Scan198 | Performance comparison log sheet for PI and PII type dynamos. | ||
| View original record | X.8664. 40/50 B. MACHINES. PI and PII 56 Coil Higher Output Machines PERFORMANCE COMPARISON OF DYNAMOS. (on routine procedure of 1.4.27) Table Headers: Date. | Dynamo. | Particulars and remarks. | (1)… | ||
| Scan199 | Performance comparison table for various dynamos based on routine procedures. | ||
| View original record | -2- 40/50 L.B. MACHINES. PERFORMANCE COMPARISON OF DYNAMOS. (On routine procedure of 1.4.27) Dynamo. (4) Speed for 10V. 14V. 17V. (5) Speed for 0 amperes. Peak Speed. Amperes. 2500 RPM. amperes. (6)… | ||
| Scan200 | Performance comparison table for various dynamos. | ||
| View original record | (0%) 40.O N.B. DYNAMOS. PERFORMANCE COMPARISON OF DYNAMOS (On routine procedure of 1.4.27). Dynamo. | (8) Speed for 10V. 14V. 17V. | (9) Speed for 0 amperes at 12.4 V. | Peak. Speed. Amperes. | 2500… | ||
| Scan201 | Phantom 48-coil dynamo (SS.7) being fitted to engine 23-EX for a 10,000-mile test. | ||
| View original record | X6004. EFC. 19.2.30. 6004 X.8665. PHANTOM 48-COIL DYNAMO FOR 10,000 MILE TEST. We have now handed over to the shop, 48-coil medium output dynamo SS.7. This is to be fitted to the engine of 23-EX for… | ||
| Scan202 | Arrangements for the despatch and fitting of a special dynamo for the Prince of Wales' car. | ||
| View original record | D/BP c. Mt. c. EFC. c. JLE. Lillie Hall. X86640. EP/Thn11/H21.2.30. re. 115-WJ. Prince of Wales. Special Dynamo with larger output. EFC. informs us that the above is now ready, and we have asked him… | ||
| Scan203 | Despatch instructions for a higher output dynamo for the Prince of Wales' car. | ||
| View original record | X8664b. Despatch stores from EFC. c. EP. EFC3/AD21.3.30. X.8664b. HIGHER OUTPUT DYNAMO 18.H.O.S.S. FOR PRINCE OF WALES' CAR. This machine is being sent into the Despatch Stores. Will Mr.Matthews… | ||
| Scan204 | Instructions regarding experimental brushes for Phantom II and 20HP Dynamos. | ||
| View original record | ROLLS-ROYCE LTD. INSTRUCTIONS. To: EFC. Order No. PD 44 X8673. Experimental Brushes for Phantom II, X 5670 and 20HP Dynamos. From a consideration of the Morganite Company's letter, dated 18-2-30, we… | ||
| Scan205 | Instruction regarding the hardness of natural graphite grades for HM5 and HM6 type brushes. | ||
| View original record | RR 238 (150 BKS.) (DB 461-8-12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To 19 Order No. PD 44 (2) Customer's No. the hardest of the natural graphite grades in the event of the HM5 type showing… | ||
| Scan206 | Letter to The Morgan Crucible Co. Ltd. regarding an order for dynamo brushes for a Phantom. | ||
| View original record | X8673 c. Roy c. Mailing. EFC2/AD. 24th February, 1930. The Morgan Crucible Co.Ltd. Battersea Works, Church Rd, S.W.1. Dear Sirs, We duly received yours of the 18th inst., reference Zha/WH. and have… | ||
| Scan207 | Request to order experimental dynamo brushes for the Phantom II model. | ||
| View original record | X8673. Roy. from EFC. EFCL/AD24.2.30. X.8673. EXPERIMENTAL BRUSHES FOR PHANTOM II DYNAMOS. We have been in communication with the Morgan Crucible Co. concerning brush grades other than the present… | ||
| Scan208 | Test report for a higher output dynamo for a Phantom II chassis, made for the Prince of Wales' car. | ||
| View original record | X8664b. COPY. PD.45. 25th February, 1930. X.8664b. PHANTOM II. 56 COIL HIGHER X.7660 OUTPUT DYNAMO 18.HO.SS. FOR THE PRINCE OF WALES' CAR. This machine, the first 56 coil higher output dynamo made for… | ||
| Scan209 | Production test report for a machine intended for Phantom I H.O. models, detailing output and performance adjustments. | ||
| View original record | -2- Production test. The machine was found to comply with the specification of test, issued for Phantom I H.O. machines as follows :- Output. 16.6 amperes at 1700 r.p.m. C.C. volts at 840 r.p.m. =… | ||
| Scan210 | The performance of a modified 56 coil dynamo (OS.95.SS) for the Phantom II, fitted to the Prince of Wales' car. | ||
| View original record | X.7660 7660 X.5664D. PHANTOM II. 56 COIL DYNAMO OS.95.SS. WITH POLAR MODIFICATION. The polar modification to this otherwise standard Phantom II machine on the Prince of Wales' car 115-WJ. was put in… | ||
| Scan211 | Fitting of a new medium output dynamo and the return of the old one. | ||
| View original record | X.6004. To RHC. from EFC. c. Hs/AJL. EFC2/AD28.2.30. 6004 X.8665. MEDIUM OUTPUT DYNAMO (48 COIL) We now hand you dynamo SS.2. which is the second complete machine of the above type, and which is… | ||
| Scan212 | Requesting modification to the poles on a 48 Coil Armature Dynamo for a higher output machine. | ||
| View original record | To Mr. Brock from EFC. X.6004. EFC. absent. EFC/CAP1/MS8.3.30. 6004 X. 8665 48 Coil Armature Dynamo. 600.6 We should be pleased if you would kindly have the poles on dynamo I.O.1. herewith, modified… | ||
| Scan213 | Performance graph showing output requirements for a 40/50 HP S.S. Dynamo, plotting Amperes and Volts against RPM and MPH. | ||
| View original record | AMPERE OUTPUT OPERATING VOLTAGES DYNAMO R.P.M. S.S. CHASSIS M.P.H. WITH 11/41 AXLE & 33.0" TYRE DIA. SPECIFIED CURVE OF OUTPUT REQUIREMENTS FOR 40/50 HP S.S. DYNAMO. 40/50. LUTON - Bleakley Dynamo… | ||
| Scan214 | Urging the fitting of a Medium Output Dynamo to a car for rapid testing and standardization. | ||
| View original record | X. 6004 To RHC. from EFC. EFC2/MG11.3.30 6004 X.8665. MEDIUM OUTPUT DYNAMO We should like to urge the fitting of Dynamo S.S.2 to 2.O.E x as asked for in our EFC2/AD28.2.30. This job is important as… | ||
| Scan215 | From EFC to Roy requesting an order of copper wire for experimental dynamo field windings. | ||
| View original record | X6008 To Roy. from EFC. EFC3/MG11.3.30. X6007 X.6025. X.6026. X6008 20 SWG. D.C.C. WIRE FOR EXPERIMENTAL FINER DYNAMO FIELD WINDINGS. Will you please order 10 lbs 20 S.W.G. D.C.C. Copper Wire for… | ||
| Scan216 | Urging the production of medium output dynamos and requesting advance samples for testing. | ||
| View original record | To Sft. from EFC. c. to BY. X6004 EFC5/MS17.3.30. | ||
| Scan217 | Instructions regarding the performance investigation of modified medium and high output 48 coil dynamos. | ||
| View original record | RR 23B (150 BKS.) (DB 431-8.12.24) MP 306975 X6004 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E F C. Order No.: PD 47 Customer's No.: 6004 X.8665 - Medium and High Output 6006. 48 Coil Dynamos. Attached is a… | ||
| Scan218 | Instruction sheet specifying modifications to brushes and springs for an order. | ||
| View original record | RR 238 (150 BKS.) (DB 431-8 12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To 19 Order No. P.D.47 (2) Customer's No. specifying as follows:- 1 The C angle to be 133°. 2 Morganite brushes of the… | ||
| Scan219 | Specifications and modifications for medium and high output 48 coil dynamos. | ||
| View original record | X 6006. EFC. PD.47. March 21st 1930. X.6004. X.6007. MEDIUM AND HIGH OUTPUT 48 COIL DYNAMOS Attached is a sheet of two curves showing the performance of 48 coil dynamo IO.1.M. first as a normal medium… | ||
| Scan220 | The necessary modifications for the experimental high output 48-coil Phantom II dynamo. | ||
| View original record | X.6006 Ey. from EFC. EFC5/AD24.3.30. X 6006. X.8667. HIGH OUTPUT 48-COIL PHANTOM II DYNAMO. Further to our EFC6/AD5.2.30, we are now able to give the necessary particulars for the experimental high… | ||
| Scan221 | Test report on the suitability of a field resistance for a 40/50 high output dynamo. | ||
| View original record | COPY. X6006 EFC. /P.D.48. March 24th, 1930. X.6016. X.6007. FIELD RESISTANCE FOR 40/50 HIGH OUTPUT DYNAMO. Tests have been made to determine the suitability, for use in conjunction with the 40/50 high… | ||
| Scan222 | Requesting to fit a medium output dynamo with experimental parts to machine 19-EX and return the old one. | ||
| View original record | X6004 RHC. from EFC. c. Hs/AJL. EFC2/AD7.4.30. X.6004. MEDIUM OUTPUT DYNAMO. X8673. We are handing to you a dynamo of the above type SS.7. fitted with bakelaque insulating pieces and an experimental… | ||
| Scan223 | Fitting of a medium output dynamo with experimental parts to car 19-EX. | ||
| View original record | X.8673 RHC. from EFC. c. Hs/AJL. EFC2/AD7.4.30. X.6004. X.8673. MEDIUM OUTPUT DYNAMO. We are handing to you a dynamo of the above type SS.7. fitted with bakelaque insulating pieces and an experimental… | ||
| Scan224 | Modification of standard Morganite brushes for a Phantom I dynamo, increasing the bevel from 15° to 30°. | ||
| View original record | X.8673 RHC. from EFC. c. Hs/AJL. EFC3/AD9.4.30. X.8673. STANDARD MORGANITE BRUSHES WITH 30° BEVEL. We are sending into the shop, 56 coil Phantom I dynamo L.28.S. fitted with a set of standard (EG2.)… | ||
| Scan225 | Blueprint and production of a higher output dynamo for the 40-50 HP Chassis. | ||
| View original record | RHC. EFC. X6006 BY/RD6/W.23-4-30. Re :- 40-50 H.P. Chassis : Dynamo. We send you herewith Blue Print of L.O.P. D.72738, Frame and Field Winding, for use on the 40-50 H.P. Dynamo, 48 Coil, higher… | ||
| Scan226 | Extract from Mr. Hancock's report on vehicle 23-EX after 5,000 miles, focusing on the dynamo. | ||
| View original record | X6006. 4.5.30. Extract from Mr.Hancock's report on 23-EX after 5,000 miles. DYNAMO. The arrangement for a less charge during the day of the dynamo has not been satisfactory. The output is too great… | ||
| Scan227 | The arrangement and exposure of motor and dynamo terminals on Phantom and 20/25 HP models. | ||
| View original record | X7660 COPY. AD.58. 14.5.30. X.7625. X.5620. PHANTOM AND 20/25 HP. MOTOR & DYNAMO TERMINALS. X.7660. X.5660. A point on the sequence motor is the arrangement of terminals. These are rather inaccessible… | ||
| Scan228 | Extract from Mr. Hancock's report on the dynamo of vehicle 23-EX after a 9,000-mile test. | ||
| View original record | X6006. 21.5.30. Extract from Mr.Hancock's report on 23-EX after 9,000 miles. DYNAMO. The dynamo has remained quiet and functioned satisfactorily throughout the test. There is a discharge of approx. 2… | ||
| Scan229 | Investigation of a finer field winding on a 43 coil medium output type dynamo. | ||
| View original record | RR 238 (150 BKS.) (D3 431-B 12 24) MP 306975 X6004. ROLLS-ROYCE LTD. INSTRUCTIONS. To EFC Order No. PD 51 Customer's No. Investigation of Finer Field Winding on 43 Coil Medium Output Type Dynamo. In… | ||
| Scan230 | Performance comparison report on a machine with finer winding versus a standard machine. | ||
| View original record | RR 238 (150 BKS.) (DB 431-B 12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To_____________________________________________ 19 Order No. PD 51 (2) Customer's No. ________________________ over the… | ||
| Scan231 | Request to modify a 48 coil armature dynamo by increasing the concentric air gap for testing purposes. | ||
| View original record | X6028 To RHC. from EFC. EFC2/AD26.5.30. X.6028. 48 COIL ARMATURE DYNAMO WITH INCREASED CONCENTRIC AIR GAP. In connection with the improvement of the output characteristics of the above type of… | ||
| Scan232 | Urging the production of two Phantom II high output 48 coil armature dynamos for further testing. | ||
| View original record | X6006 To RHC. from EFC. EFC4/AD26.5.30. X.6006. PHANTOM II HIGH OUTPUT 48 COIL ARMATURE DYNAMO. May we please urge with you the production of the two machines instructed by By/RD6/W23.4.30 as one of… | ||
| Scan233 | Requesting to fit temperature indicating sentinels to Phantom dynamos during routine road tests. | ||
| View original record | X7660 To Mx. from EFC. EFC5/AD26.5.30. X.7660. WORKING TEMPERATURE OF PHANTOM DYNAMO. Arising out of the development which is taking place on 40/50 dynamo as a result of the necessity of evolving the… | ||
| Scan234 | Handover of an experimental medium output dynamo for testing. | ||
| View original record | X6004. RHC. from EFC. c. Hs/AJL. EFC1/AD28.5.30. X.6004. MEDIUM OUTPUT DYNAMO. We are now handing over to you a dynamo of the above type S.S.7. fitted with an experimental grade of Morganite brush and… | ||
| Scan235 | Suggesting improvements to the protection of dynamo wiring, using flexible brass or metallic tubing. | ||
| View original record | X7660 To E. from EFC. c. By. EFC7/AD29.5.30. X.5660. X.7660. CONNECTIONS TO DYNAMO. Some amount of criticism arises out of the fact that the wires leading to the dynamo look a rather poor job, being… | ||
| Scan236 | Instruction sheet detailing tests conducted on 40/50 dynamo brush noise. | ||
| View original record | RR 238 (150 BKS.) (DB 431-8.12.24) MP 306975 X8673. ROLLS-ROYCE LTD. INSTRUCTIONS. To EFC Order No. PD 53 Customer's No. June 5th 1930 X.8673. 40/50 Dynamo Brush Noise Tests. A number of experiments… | ||
| Scan237 | Instructions detailing experiments on commutator brushes and holders to reduce vibration and friction. | ||
| View original record | ROLLS-ROYCE LTD. INSTRUCTIONS. RR 238 (150 BKS.) (DB 461-8-12 24) MP 306975 To Order No. PD 53 (2) Customer's No. 19 C. The inside of the trailing wall of the holder forming the bearing surface for… | ||
| Scan238 | Instructions detailing a preliminary experiment on a special brush-holder and findings on commutator skimming to reduce brush noise. | ||
| View original record | RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To _________ Order No. PD 53 (3) Customer's No. _________ A preliminary experiment was made using a special brush-holder in… | ||
| Scan239 | Instruction sheet detailing tests on lubricated and graphitic brushes to reduce shrieking. | ||
| View original record | RR 238 (150 BKS.) (DB 461-8-12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To____________________________________________________ 19__ Order No. PD 53 (4) Customer's No.__________________ 2… | ||
| Scan240 | Instruction sheet detailing experiments with special holders, springs, and brushes. | ||
| View original record | RR 238 (150 BKS.) (DB 481-8-12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. 19 To Order No. PD 53 (5) Customer's No. (a) Special holder and special spring. With each combination were tried, standard,… | ||
| Scan241 | Instructions for an investigation into a new grade of brush, spring pressure, and commutator surfaces to reduce noise. | ||
| View original record | RR 238 (150 BKS.) (DB 461-8-12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To__________________________________________________________19__ Order No. P.D. 53 (6) Customer's No.___________________… | ||
| Scan242 | Request to manufacture one dozen Dynamo Temperature Indicating Sentinels with a specific melting point. | ||
| View original record | X7660 To H.L. from E.F.C. EFC1/ADL 2.6.30. X.7660. DYNAMO TEMPERATURE INDICATING SENTINELS. A considerable time ago you kindly made up for us some of the above type sentinels consisting of small… | ||
| Scan243 | Control brush position and output issues for 40-50 HP higher-output dynamos. | ||
| View original record | EFC. X8664 BY/RD6/W.2-7-30. Re :- 40-50 H.P. Higher-output Dynamos. (28 Slots. 56 Coils.) We have now produced several high-output Machines with a control brush position of 127°, and the Works tell us… | ||
| Scan244 | Issue with the output of 40/50 HP high output dynamos and arranging for a trial. | ||
| View original record | X8664. Ey/RD. from EFC. EFCl/AD3.7.30. X.8664. 40/50 HP. HIGH OUTPUT DYNAMOS (56 COIL) Referring to your Ey/RD6/W2.7.30 we will look into this matter, but understand, as mentioned in conversation,… | ||
| Scan245 | Requesting the skimming of a dynamo commutator due to noisy brushes and surface irregularity. | ||
| View original record | X6006 To RHC. from EFC. EFC3/AD7.7.30. X.6006. 40/50 48 COIL HIGH OUTPUT DYNAMO. We are sending in to you an armature taken from a machine of the above type, 1.24S.HO. The brushes on this machine,have… | ||
| Scan246 | Extract from C.W. Hancock's report on the dynamo output and condition on chassis 24-EX at 6,000 miles. | ||
| View original record | X6006 Extract from C.W.Hancock's report dated 20.7.30. on 24-EX at 6,000 miles. X6006 X6016 The output of the dynamo is as follows :- Half charge : 20 M.P.H. Cuts in 30 M.P.H. 5.5 amps. 40 M.P.H. 8.0… | ||
| Scan247 | Request to modify the armature connections for a Standard Phantom II dynamo. | ||
| View original record | X7660 RHC. from EFC. EFC5/ADL 2.8.30. X. 7660. STANDARD PHANTOM II DYNAMO. Herewith we hand to you the armature taken from dynamo XI.15.SSX. Will you please arrange to have the commutator end… | ||
| Scan248 | Requesting road and bench testing for a Dynamo IO.1M on chassis 23-EX. | ||
| View original record | X6006 Hs/AJL. from EFC. EFC1/ADL 3.8.30. X.6006. DYNAMO IO.1M. on 23-EX. The question of the capability of the Phantom dynamo of balancing the lighting load being still under consideration, we are… | ||
| Scan249 | Extract from G.W. Hancock's report on the failure of a dynamo on vehicle 24-EX at 10,000 miles. | ||
| View original record | X6006 Extract from G.W.Hancock's report dated 15.8.30 on 24-EX at 10,000 miles. X6006 DYNAMO TO SUIT HALF-CHARGE SCHEME. X 6016 We gave the output of the dynamo in our 6,000 mile report. This did not… | ||
| Scan250 | Lamp specifications for car 24-EX and reporting a dynamo failure. | ||
| View original record | X6006 To E. From Hs/GWH. Hs/GWH. 1/MJ.19.8.30. X6006 X1269 Re. Improved Dynamo Arrangement. In reply to your memo E1/M11.8.30. We herewith give you the particulars of the lamp bulbs in use on 24-EX.… | ||
| Scan251 | Instructions regarding the failure and subsequent testing of a 48 Coil High Output Dynamo. | ||
| View original record | RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 X6006. ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.F.C Order No.: PD 54 Customer's No.: Date: Aug. 25th 1930 X 6006. 48 Coil High Output Dynamo L.H.2.M on Car 24… | ||
| Scan252 | Inspection report on a faulty machine detailing the cause of severe flashing. | ||
| View original record | Order No. PD54 (2) insulation of the main brush-holders. When this was removed, the insulation was quite O.K. The machine was then given a short run on the bench when it appeared to excite and charge… | ||
| Scan253 | The investigation of commutator and armature issues causing charging failure and clicking noises. | ||
| View original record | RR 238 (150 BKS.) (DB 431-8 12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To............ Order No. PD 54 (3) Customer's No. ..........................19 Commutator; mainly at the positive brushes.… | ||
| Scan254 | Failed 48 coil armature from dynamo 24-EX being sent for stripping and rewinding. | ||
| View original record | X6006 RHC. from EFC. c EFC2/AD26.8.30. X.6006. 48 COIL ARMATURE FROM DYNAMO OFF 24-EX. We are sending to you 48 coil armature No.3 taken from high output dynamo LH.2.M. which failed on 24-EX. There is… | ||
| Scan255 | Advising on the re-winding or replacement of a Phantom Dynamo armature for chassis 25-EX ahead of a 10,000-mile test. | ||
| View original record | X6006 RHC. from EFC. EFC4/AD26.8.30. X.6006. PHANTOM DYNAMO. The high output dynamo L.H.1.M. appertaining to 25-EX is one of two whose end connections to the commutator have been moved round, the… | ||
| Scan256 | Explaining the cause of a dynamo armature failure on chassis 24-EX during a 10,000-mile test. | ||
| View original record | Y6006 To R. from EFC. c. Sg. Wor. c. Rg. E. c. Da. Py. c. EP. MX. EFU5/AD26.8.30. X.6006. DYNAMO ARMATURE FAILURE ON CHASSIS 24-EX ON 10,000 MILE TEST. In case misgivings should exist regarding the… | ||
| Scan257 | Urging the completion of work on a 48 coil dynamo armature for vehicle 25-EX. | ||
| View original record | X6066. RHC. from EFC. EFC7/AD29.8.30. X.6006. 48 COIL ARMATURE FROM DYNAMO OFF 25-EX. We would like to urge with you he work to be done on the armature of the dynamo belonging to 25-EX, given in our… | ||
| Scan258 | Road test report on a 48 coil high output dynamo and reduced charge scheme. | ||
| View original record | RR 238 (150 BKS.) (DB 431-8.12.24) MP 306975 X6006. ROLLS-ROYCE LTD. INSTRUCTIONS. To EFC Order No. PD 55 Customer's No. August 29th 1930 X.6006. 48 Coil High Output Dynamo X6016 and Reduced Charge… | ||
| Scan259 | Instructions and observations from a test on dynamo output under different lamp loads. | ||
| View original record | RR 238 (150 BKS.) (DB 431-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To Order No. PD 55 (2) Customer's No. ammeter as a maximum discharge of 13.5 amperes. (6 watt lamps were used in the side… | ||
| Scan260 | Proposal for a new scheme to lubricate the dynamo on the Phantom II & 25 HP models. | ||
| View original record | BY. From Hs/GWH. 87660 Hs/GWH.1/MJ.30.8.30. Re. Lubrication to Dynamo Phantom 11 & 25 HP X.3806: X.7660 X.5660. We should like a scheme of lubricating the dynamo from the central lubrication scheme to… | ||
| Scan261 | Comparing a quotation for sample carbon brushes from British Carbons with current prices. | ||
| View original record | X8673 Hs. from Roy/Ms. Roy/Msl/P12.9.30. X.5670. X.8673. Please receive herewith the following sample Carbon Brushes, received from Messrs. British Carbons, Crowther Street, Bradford :- D.51325. 20/25… | ||
| Scan262 | Standardisation of a 48 coil armature dynamo with pole piece modification for high output. | ||
| View original record | RR 755 REVISED (10H) (DF 637 4-1-29) BM. 2/5943. X6006 COMPLETED 12.9.30. STANDARDISATION of CHASSIS PARTS. Date 18.6.30. Description of Parts. 48 coil armature dynamo with pole piece modification for… | ||
| Scan263 | Requesting a road test for a 48-coil high-output dynamo on the 24-EX experimental car. | ||
| View original record | X6006 Hs/AJL. from EFC. EFC1/AD15.9.30. X.6006. 48-COIL HIGH OUTPUT DYNAMO ON 24-EX. X.6016. In connection with our work on dynamo output and the reduced charge switching scheme, we would now like to… | ||
| Scan264 | Specification sheet for standard carbon brushes used in various vehicle components and models. | ||
| View original record | X. 8673 15.9.30. X.5670 X.8673. STANDARD CARBON BRUSHES. PHANTOM II AND L.H. Starter. D.71279 Morganite C.M.3. Dynamo. Main D.70912/3 Le Carbone Z } Control D.70966/7 " " " } 50% each. Main D.71256/7… | ||
| Scan265 | Electrical experimental record sheet logging mileage for a test on Morganite Brushes. | ||
| View original record | X8673. ELECTRICAL EXPERIMENTAL RECORD SHEETS. Tube:- 20-2-30 X 8673. Morganite Brushes. E.G.O. Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles… | ||
| Scan266 | Specifying the brush angle for a 40/50 48-coil high output dynamo and requesting production samples for testing. | ||
| View original record | X6006 By/RB. from EFC. EFC3/AD2.10.30. X.6006. 40/50 48-COIL HIGH OUTPUT DYNAMO. We are now able to give the angle between the main positive brush and the control brush for the above type of machine… | ||
| Scan267 | Requesting an explanation for electrical equipment failures on a left-hand chassis following a 10,000-mile test. | ||
| View original record | X6006 To Wor. from Hs. c. Ev. c. EFC. Hs2/MJ6.10.30. X.6021. X.6006 X.7740 LEFT-HAND CHASSIS. We are about to issue a standardisation sheet for the left-hand car, but in reviewing the failures which… | ||
| Scan268 | The failure of a battery and dynamo following a 10,000-mile test on a 24-EX vehicle. | ||
| View original record | X6006 Wor. from EFC. c. Hy. c. Hs. EFC6/AD6.10.30. X6021 X6006 X7740 ELECTRICAL EQUIPMENT ON 24-EX 10,000 MILE TEST. Referring to Hs2/MJ6.10.30 our remarks on the three items are as follows :-… | ||
| Scan269 | Failure analysis report on a dynamo and cutout unit following a 10,000-mile test, continued on page 2. | ||
| View original record | -2- due to the use of an armature which had had the end connections lifted and moved round one segment subsequently to original manufacture. We have run many other armatures so altered on experimental… | ||
| Scan270 | Request to arrange for the check-testing of 48-coil dynamos for 'N2b' Series and L.H.S.S. Chassis. | ||
| View original record | X6006. ⑫ 1/30 SFI. c - EFC. BY/RD2/W.7-10-30. Re :- 48-coil Dynamos : Higher Output. "N2b" Series and L.H.S.S. Chassis. Will you please arrange to let EFC.have the first three machines of each type… | ||
| Scan271 | Requesting to fit a 48 coil high output dynamo with special Morganite brushes to chassis 23-EX for testing. | ||
| View original record | X6006. RHC. from EFC. c. Hs/AJL. EFCL/AMO.10.30. X.6006. 48 COIL HIGH OUTPUT DYNAMO WITH SPECIAL MORGANITE BRUSHES. We are now sending in to you a dynamo of the above type No. 2.24S.HO fitted with a… | ||
| Scan272 | Modification of 56 coil armature dynamos into 48 coil high output machines. | ||
| View original record | To EFC. X6006. 15.10.30 X.6006. 48 COIL HIGH OUTPUT DYNAMO. We have in the laboratory two spare present production 56 coil armature dynamos which we think might usefully be modified into 48 coil high… | ||
| Scan273 | Request for two 48 coil armatures to replace existing 56 coil armatures for dynamo performance experiments. | ||
| View original record | X6006 RHC. from EFC. EFC2/AD16.10.30. X.6006. 48 COIL HIGH OUTPUT DYNAMO. We require two 48 coil armatures to replace in two present production machines at present fitted with 56 coil armatures. In… | ||
| Scan274 | Performance comparison log for various dynamo models. | ||
| View original record | X.6006 40/50 I.B. MACHINES. 48 Coil High Output Machines (EJB modification) X.6006. PERFORMANCE COMPARISON OF DYNAMOS. (on routine procedure of 1.4.27) Date. | Dynamo. | Particulars and remarks. | (1)… | ||
| Scan275 | Performance comparison table for various dynamo models based on a routine procedure. | ||
| View original record | -2- 40/50 H.P. MACHINES. PERFORMANCE COMPARISON OF DYNAMOS. (On routine procedure of 1.4.27) Dynamo. | (4) Speed for 10V. 14V. 17V. | (5) Speed for O amperes. | Peak Speed. Amperes. | 3,400 2500 RPM.… | ||
| Scan276 | Performance comparison table for various dynamos, based on a routine procedure. | ||
| View original record | (03) 40/'60 N.B. DYNAMOS. PERFORMANCE COMPARISON OF DYNAMOS (On routine procedure of 1.4.27). TABLE HEADERS: Dynamo. (8) Speed for 10 V. 14V. 17V. Speed for 0 amperes at 12.4 V. (9) Peak Speed.… | ||
| Scan277 | Specification for the inspection and testing of a 40/50 HP high output dynamo with a 48 coil armature. | ||
| View original record | X6006. 25.10.30. X.7781. R.R. 40/50 HP. HIGH OUTPUT DYNAMO WITH X.6006. 48 COIL ARMATURE. VERSION 10. SPECIFICATION OF INSPECTION AND TEST. Applicable to dynamos with 48 coil armatures and with field… | ||
| Scan278 | Instructions for inspecting springs and testing dynamo insulation and brush bedding, continued on page 2. | ||
| View original record | -2- Note (1) It is possible that a spring which is noticeably weak is cracked and requires replacing. Note (2) It will usually be found that a spring which is good has a uniformly expanding spiral.… | ||
| Scan279 | Instructions for checking and rectifying a noisy dynamo, including brush bedding and output testing procedures. | ||
| View original record | -3- which is noisy, it should be again checked that the clearances between the brush and its holder both axially and circumferentially, and between the bottom of the holder and the commutator, do not… | ||
| Scan280 | Dynamo testing procedures, including running at speed, checking for vibration, and insulation testing. | ||
| View original record | -4- (8) The dynamo shall now be run up to 3600 r.p.m. still on load, and shall show no abnormal brush sparking. Further, the mechanical vibration due to any want of balance shall not be excessive. (9)… | ||
| Scan281 | Inspection and test specification for a Phantom II high output dynamo with a 48 coil armature. | ||
| View original record | X6006 Ey. from EFC. c. Sft/Mr.Brock. EFC3/AD27.10.30. X.7781. R.R. Phantom II. High output Dynamo X.6006. with 48 coil armature. Herewith please receive copy of Specification of Inspection and Test… | ||
| Scan282 | The examination and bench testing of a 48 Coil High Output Dynamo, model I.O.I.M. | ||
| View original record | RR 238 (150 BKS.) (D3 431-8 12 24) MP 306975 X.6006 ROLLS-ROYCE LTD. INSTRUCTIONS. To EFC. Order No. PD 56. Customer's No. Oct. 29th 1930 x6006 48 Coil High Output Dynamo I.O.I.M. This machine, the… | ||
| Scan283 | The examination and testing of a 48 coil high output dynamo from chassis 23-EX after completing 18,674 miles. | ||
| View original record | X6006. To R. from EFC. c. Sg. c. Wor. E. c. Da. By. EFC2/AD3.11.30. X.6006. 48 COIL HIGH OUTPUT DYNAMO I.O.I.M. EX CHASSIS 23-EX. This dynamo is the machine which satisfactorily passed the 10,000 mile… | ||
| Scan284 | Confirming the dispatch and completion of an order for various dynamo types. | ||
| View original record | X6004. EFC. 5.11.30. X.6003 X.6004. Herewith four off 20 HP. Intermediate output dynamos (24 slot). This completes the order for ten that you instructed. You have now had 10 off of both 40/50 abd… | ||
| Scan285 | Replacement of field windings on a Phantom Dynamo S.S.X. | ||
| View original record | X6006 RHC. from EFC. EFC5/ADL2.11.30. X.6006 PHANTOM DYNAMO S.S.X. X.6008. We are handing to you the above dynamo which at present is fitted with pole pieces giving an increased concentric air gap… | ||
| Scan286 | Request to service a 48 coil dynamo S.S.X. by skimming the commutator to fix sparking and uneven output. | ||
| View original record | X6006 RHC. from EFC. EFCL/ADL4.11.30. X.6006. 48 COIL DYNAMO S.S.X. Will you please have the commutator of the armature fitted in the above dynamo, which we are handing to you, skimmed up. Sparking… | ||
| Scan287 | Request from Malcolm Campbell for a higher output dynamo to resolve issues with his car's lamps. | ||
| View original record | RECEIVED [clock face stamp] 1930 NOV 19 X6006. EFC. BY11/G.19.11.30. X7660 X6006 MALCOLM CAMPBELL - RE HIGHER OUTPUT DYNAMO. The above owner is asking us for an increased output from his electrical… | ||
| Scan288 | Production test log for Phantom II type dynamo machines with 56 coil armatures, recording output, volts, and brush settings. | ||
| View original record | Top Right Reference: X.7660 Top Center Title: PRODUCTION TEST. Handwritten Subtitle: P II type machines with 56 coil armatures and thinner stampings Type Line: Rolls Royce. E.A.C. DYNAMO 6088 do.… | ||
| Scan289 | Higher output dynamo for a customer named Malcolm Campbell, comparing a new 48 coil machine to an older one. | ||
| View original record | X6006. By. from EFC. EFC4/AD20.11.30. MALCOLM CAMPBELL. - HIGHER OUTPUT DYNAMO. The average 48 coil high output machine recently standardised for use with the half charge switching system has a… | ||
| Scan290 | Request to skim a worn dynamo commutator for a Phantom 48 coil dynamo in preparation for a test. | ||
| View original record | X6006 RHC; from EFC. EFC3/AD25.11.30. X.6006. PHANTOM 48 COIL DYNAMO I.O.M.1. We are now handing you the armature from the above dynamo, which has run about 19,000 miles, and the commutator of which… | ||
| Scan291 | Replacement of a Phantom II dynamo on car 20-EX after a 10,000-mile test. | ||
| View original record | X 6004. RHC. from EFC. c. Hs/AJL. EFC2/ADL.12.30. PHANTOM II DYNAMO. The dynamo at present on 20-EX has just completed 10,000 miles with special Morganite E.G.O. brushes, will you please arrange to… | ||
| Scan292 | Request to remove a 48 coil high output dynamo from vehicle 23-EX. | ||
| View original record | X6006 RHC. from EFC. c. Hs/AJL. EFC2/AD10.12.30 X.6006. 48 COIL HIGH OUTPUT DYNAMO ON 23-EX. We should be pleased to have removed from 23-EX and returned to us, the 48 coil high output dynamo No.… | ||
| Scan293 | Technical note discussing improvements to the performance characteristics of car dynamos. | ||
| View original record | EFC; } FROM R Hs. } c. Sg. Wor. Ey. X6006 R1/M13.12.30. X.6005 X.6006. CAR DYNAMOS X.6016. We must always cut in at 15 M.P.H. We must have current enough to maintain all the running demands at all… | ||
| Scan294 | Test report on Morganite E.G.O dynamo brushes following bench and road testing. | ||
| View original record | RR 238 (150 BKS.) (DB 431-8.12.24) MP 306975 X. 8673 ROLLS-ROYCE LTD. INSTRUCTIONS. To E F C Order No. PD57 Customer's No. Dec. 16th 1930 x.8673. Test of Morganite E.G.O Brushes. These brushes… | ||
| Scan295 | The condition and performance of brushes, including a table of wear measurements. | ||
| View original record | ROLLS-ROYCE LTD. INSTRUCTIONS. To Order No. PD 57 Customer's No. segment. The surfaces of the brushes were in good condition, the positives only being blackened over about one quarter of the widths,… | ||
| Scan296 | The decision to proceed with a half-charge dynamo scheme using a 6-inch resistance. | ||
| View original record | X6006 Wor. c. EFC. X.6006. RE : DYNAMOS By5/N16.12.30. X.6016. As we must proceed with the manufacture of dynamos for chassis we are producing, after going carefully into the position, I am satisfied… | ||
| Scan297 | High output dynamos and the two-rate charge scheme. | ||
| View original record | X 6006 Wor. from EFC. c. By. EFC1/AD18.12.30. X.6005. HIGH OUTPUT DYNAMOS AND THE X.6016. X.6006. TWO-RATE CHARGE SCHEME. By5/N16.12.30. We agree with By. in general that the new 48 coil high output… | ||
| Scan298 | Dynamo limitations, battery charging schemes, and potential improvements to the system. | ||
| View original record | -2- EFCL/AD18.12.30. contd. We have endeavoured to explain in recent reports the reasons of the limitations and the fact that we cannot, for certain definite reasons e.g. the absence of automatic… | ||