Rolls-Royce Archives
| Identifier | Entry | ||
| Scan0 | The audibility of Klaxon horns and diaphragm breakages, recommending a spare be carried. | ||
| View original record | To CJ. from Hs. c. to R. c. to Bn. c. to EP. ORIGINAL EFC Hs7/LG9.4.20. 2 X.1163. X.3443. RE. KLAXON HORNS. With reference to your memo CJ12/9.3.20, requesting that experiments should be carried out… | ||
| Scan1 | Experiments and specifications for a number of special ignition coils. | ||
| View original record | H-N Chassis 3EX. COPY [struck through] ORIGINAL To R. from EFC. c. to CJ. c. to E. c. to Bn. c. to Da. c. to EP. c. to Hs. X.3775 - RE SPECIAL IGNITION COILS. We have now made experiments on the bench… | ||
| Scan2 | The testing and comparison of ignition coils, their performance, specifications, and fitting to a specific chassis. | ||
| View original record | Contd. -2- EFC2/T13.4.20. 10,000 mile run, and as reported in HSL/LG9.4.20, this coil has given no trouble. It is wound with 16,000 turns of standard secondary wire allowing of more liberal insulation… | ||
| Scan3 | The bench testing and analysis of various ignition coil designs, noting differences in insulation and secondary wire. | ||
| View original record | Contd. -3- EFC2/T13.4.20. maximum gap length for regular firing and the number of secondary turns, from which it will be seen that this maximum is roughly proportional thereto. The running currents… | ||
| Scan4 | Further notes on the performance of standard coils and spark gap tests. | ||
| View original record | FURTHER NOTES- 16.4.20. It will have been noted that the maximum gap curves for the standard coils on the two sheets of curves herewith do not show so good a performance as a similar curve given under… | ||
| Scan5 | Graph showing maximum spark gap and average current versus contact breaker speed for various ignition coils. | ||
| View original record | Average Current (Amperes) Max. Gap. (Inches) Curve A Max. Gap-Speed Curve for S.R.14 coil. Curve B '' '' '' '' '' poor standard coil. Curve C '' '' '' '' '' normal '' '' Curve D Average Current-Speed… | ||
| Scan6 | Blank document stamped by the Print Room in Derby. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 10 MAR. 20 DERBY | ||
| Scan7 | Graph of maximum gap-speed curves for five different special ignition coils. | ||
| View original record | MAXIMUM GAP-SPEED CURVES for SPECIAL COILS. USING 12 VOLT BATTERY AND R.R. CONTACT BREAKER WITH SINGLE PLATINUM POINT SPARK GAP. I CURVE No. 1 - COIL No. S10. (x) " " 2 - " " S12. (o) " " 3 - " " E14.… | ||
| Scan8 | Blank document page with a Print Room stamp from the Derby facility. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 15¹ APR. 20 DERBY | ||
| Scan9 | Graph showing the variation of maximum gap with the number of secondary turns for special battery ignition coils. | ||
| View original record | X.3775. VARIATION OF MAXIMUM GAP AT 50 S.P.S. WITH NUMBER OF SECONDARY TURNS FOR SPECIAL R.R. BATTERY IGNITION COILS WITH STANDARD PRIMARY CONDITIONS. MAXIMUM GAP (Inches) AT 500 R.P.M. (for coils… | ||
| Scan10 | 10,000-mile test of a small Chloride battery type 6 BXE 4, which failed due to faulty manufacture. | ||
| View original record | R.R. 235 A (100 T) (S.F. 846. 6-8-19) G. 2460. To R. from EFC. c. to CJ. c. to E. c. to Bn. c. to Da. c. to EP. c. to By. c. to Wd. ORIGINAL EFC7/T20.4.20. X.3619 - SMALL CHLORIDE BATTERY TYPE 6 BXE 4… | ||
| Scan11 | Letter detailing the results and investigation following a 10,000-mile test on a 6 BXE4 Type Chloride Battery. | ||
| View original record | R.R. & B. 322 (100 T.) J.B.(?) 8-12 c. 3120 EFC3/T. 20th April, 1920. The Chloride Elec: Storage Co.Ltd., Clifton Junction, Nr. Manchester. Dear Sirs, X.3619 (crossed out) Re 6 BXE4 Type Chloride… | ||
| Scan12 | Letter detailing battery failure analysis, including issues with wooden separators and ebonite rings. | ||
| View original record | -2- Contd. has exercised sufficient force to enable the wooden separator beyond to be compressed sufficiently to allow the plates to make contact one with another. We may say that we have had one case… | ||
| Scan13 | The conclusion of a letter discussing a fault but expressing overall confidence in battery performance. | ||
| View original record | -3- Contd. Apart from this one fault, we still have great confidence in the performance of these batteries. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||
| Scan14 | Comments on a 10,000-mile test of various electrical components. | ||
| View original record | R.R. 235 A (100 T) (S.F. 846. 6-8-19) G. 2460. To R. from EFC. c. to CJ. c. to E. c. to Bn. c. to Da. c. to EP. c. to By. ORIGINAL. EFC1/T21.4.20. X.3647 ✓ 10,000 MILE TEST OF ELECTRICAL PARTS ON 2… | ||
| Scan15 | Report discussing coil winding specifications and the performance of a Lucas dynamo. | ||
| View original record | R.R. 235 A (100 T) (S.F. 846. 6-8-19) G. 2460. Contd. -2- EFC1/T21.4.20. curves given under cover of our report EFC2/T13.4.20, although the curve for this particular coil is not there given. Owing to… | ||
| Scan16 | The performance of electrical parts after a 10,000-mile run on a 2.EX car. | ||
| View original record | To EFC. from Hs ORIGINAL HsG/LG20.4.20. X.364Ya ELECTRICAL PARTS RUN 10,000 MILES ON 2.EX CAR. X.3748 1. X.60Y X.3619 Battery. The Battery on this car failed after approx. 7000 miles. We notice that… | ||
| Scan17 | Dynamo and wiring performance, with a recommendation to continue work on coils for an experimental car. | ||
| View original record | Contd. -2- Hs6/LG20.4.20. ---------- think it advisable to recommend it for standardisation. Owing to Mr. Platford's complaints of the present coils, we think that we should continue to work on coils… | ||
| Scan18 | The flow of water through an engine with and without a thermostat fitted at various engine RPMs. | ||
| View original record | To R. From Hs. c.c. to CJ c.c. to BH c.c. to EE c.c. to Da. c.c. to HY. EFC [STAMP] ORIGINAL [STAMP] EFC APR 24 1920 Hs2/LGS.4.20. X.3563. THERMOSTAT CONTROL FOR WATER TEMPERATURE. [STAMP] RECEIVED We… | ||
| Scan19 | Design and manufacture of a switchboard for a Smith dynamo. | ||
| View original record | To EFC. from R. Copy to CJ. " " BN. " " WOR. ORIGINAL 6 RL/G12/4/20. APR 1920 X.3975 X.3958 RE DYNAMO AND SWITCHBOARD. X.295 X.1815 Do as you suggest about the switchboard for Smith dynamo. Use any… | ||
| Scan20 | Requesting a new set of rear springs be made with specific design changes to prevent wear and squeaking. | ||
| View original record | To HS. from R. Copy to CJ. " " BN. " " DA. ORIGINAL R10/G14/4/20 X.3981. RE REAR SPRINGS. X.2628 I should be glad if you and Mr. Day will have a set of springs made in the style we want to adopt… | ||
| Scan21 | Car accumulator construction and proposing an experiment to measure charge loss. | ||
| View original record | To EFC. from R. Copy to OJ. " " BN. ORIGINAL. R9/G14/4/20. X 664 X 3980 RE BATTERIES (EFC2/T12/4/20) X.607. It is understood to be generally advantageous that accumulators should be fitted up in… | ||
| Scan22 | Changing the insulation material for a main switch from vulcasbestos to micanite. | ||
| View original record | To EFC. from R. Copy to CJ. BN. ORIGINAL R5/G15/4/20. 4 X.3034 RE MAIN SWITCH - EFC3/T10/4/20. I quite agree to changing the insulation from vulc-asbestos to micanite if there is any sign of the… | ||
| Scan23 | Adoption of a rubber hose type joint for the thermostat water connections to improve fool-proofness. | ||
| View original record | To HS. from R. Copy to OJ. " " BN. " " DA. X.3563 ORIGINAL. RE THERMOSTAT. R2/G19/4/20. 4 20 APR 1920 Regarding the thermostat and the slight want of fool-proofness in making the water connections, I… | ||
| Scan24 | The design for a luggage carrier bracket, criticising poor modifications by coachbuilders. | ||
| View original record | 3 To BA. from R. Copy to C.L. " " RN " " HS. " " EFC. ORIGINAL X.3507. RE LUGGAGE CARRIER. R5/D19/4/20. 20 APR 1920 With reference to the bracket to fix the luggage carrier, I am pleased that the… | ||
| Scan25 | Manufacturing specifications for a magneto drive shaft. | ||
| View original record | To HS. from R. Copy to CJ. BN. DA. BY. ORIGINAL X.3530 RE MAGNETO DRIVE. Providing you are satisfied that the exhaust pipe will not damage by heat, the fabric universal joints, this is the best… | ||
| Scan26 | Improvements to the starter motor's gearbox shaft and slipper drive, requesting testing and standardisation. | ||
| View original record | To HS. from R. Copy to C.L. EPC. DY. ORIGINAL 4 R11/D/19/4/20. 21 APR 1920 X.3082 X.3350 RE STARTER MOTOR. Regarding the starter motor, I was pleased to hear that the shaft in the gear box had its… | ||
| Scan27 | Effectiveness of a heat-insulated dashboard and the need for temperature measurement. | ||
| View original record | To Mr. from R. Copy to CJ. " HS. " LHS. " BP. X.3973 RE HEAT INSULATED DASHBOARD. ORIGINAL R10/G20/4/20. With reference to your memo BN6/W13/4/20, I have little faith in any appreciable change in… | ||
| Scan28 | Effectiveness of a heat-insulated dashboard, with a handwritten note to take measurements. | ||
| View original record | [Handwritten]: R Heat Insulated Dashboard BN has no fault to find [struck through] H.S. to take some measurements [Typed - Reversed]: From Short to R. ob. good copy HC: THE ES X3622 RE HEAT INSULATED… | ||
| Scan29 | Different designs and testing procedures for road springs. | ||
| View original record | TO HS. from R. Copy to C.L. [Illegible strikethrough text] ORIGINAL. R10/C19/4/20. 5 DF.V.2628 RE ROAD SPRINGS. X.3922 X.3981 I think it is highly desirable for you to get Mr. Northey - (1) a set of… | ||
| Scan30 | Manufacturing defects in road springs, including improper bending and flatness. | ||
| View original record | To WOR. from R. Copy to G.I. BN WD SA HS ORIGINAL X 2628 RE ROAD SPRINGS. With reference to road springs, I understand that on examination of these the manufacture has been found somewhat defective. A… | ||
| Scan31 | Modifications to rear springs, proposing a second clip and a return to tapered ends. | ||
| View original record | To WOR. from R. -2- R12/G16/4/20 Contd. at present adopted, we think it would be better to use a second clip to prevent all the plates from turning but the very short ones. This would make it easy to… | ||
| Scan32 | Instructing alterations to 'Buzzard' connecting rods, referencing drawing LeC.1226. | ||
| View original record | To DA. from E. Copy to Sd. " " BN. [crossed out] " " HS. [crossed out] " " EPC. [crossed out] " " EY. [crossed out] [STAMP] ORIGINAL. [STAMP] RECEIVED [HANDWRITTEN] X.3790. [HANDWRITTEN SIDE NOTE] MAR… | ||
| Scan33 | Drawing for modifying the front chassis frames of 'Buzzard' and 'Vulture' bonnet models. | ||
| View original record | To B.A. from E. Copy to CJ. " " BN. " " HS. " " EFC. " " BY. ORIGINAL. E2/G24/4/20. 4 RE "BUZZARD" AND "VULTURE" BONNET MODELS. X.3822. X.3662. X.4293c/d RECEIVED We send you herewith drawing No.… | ||
| Scan34 | Postscript to a memo relaying Mr. Royce's concerns about frame strength and requesting a revised blueprint. | ||
| View original record | To DA. from E. -2- E2/G24/4/20 Contd. P.S. Mr. Royce is inclined to think that the front portion of the frame opposite the front springs looks rather weak in depth compared with the main portion of… | ||
| Scan35 | Inquiring about the desirability of using sherardised oil tubes for connecting rods. | ||
| View original record | To HS. from R. Copy to CJ. BN. ORIGINAL. 4 R5/G26/4/20. 28 APR 1920 X.361 X.3429 RE SHERARDISED TUBES FOR CONNECTING RODS I should be pleased to know if you consider the sherardised oil tubes for the… | ||
| Scan36 | The performance of the thermostat control for water temperature and a request for corrected drawings. | ||
| View original record | To HS. from R. Copy to CJ. " " BM. " " DA. " " EFC. " " DY. ORIGINAL HS/CSB/28/APR/20. X.3563 RE THERMOSTAT CONTROL FOR WATER TEMPERATURE. HS2/LG23/4/20 - With reference to the thermostat control of… | ||
| Scan37 | Material composition of 'Sparkite' contact points and considering alternatives like tungsten or silver. | ||
| View original record | To EFC. from R. Copy to CJ. " " BN. ORIGINAL R8/G26/4/EO. 28 APR 1920 X.3468 X.1818 RE "SPARKITE" CONTACT POINTS. X.2894 X.1819 X.806 I am pleased to hear you have found "Sparkite" Contact Points are… | ||
| Scan38 | Testing methods for pre-war car connecting rods and referencing aero engine practices. | ||
| View original record | 3 To BN. from R. Copy to CJ. " BY. " HS. ORIGINAL. R5/G28/4/20. X.34 29. RE PRE-WAR CAR CONNECTING RODS (BN14/W9/3/20) With reference to the above, Mr. Hives can test the directly drilled hole, but… | ||
| Scan39 | Testing of 'ferodo' material for the bedding between leaves on road springs. | ||
| View original record | To-WOR. from R. Copy to OJ. " HS. ORIGINAL R1/G28/4/20. 4 X.2628 X.3981 RE ROAD SPRINGS. Thank you for your note WOR3/M26/4/20, I think the bedding between the leaves to be of great importance. I want… | ||
| Scan40 | Risks and viability of fitting a smaller battery versus improving existing cells. | ||
| View original record | 4 To EFC. from R. Copy to CJ. " " BN. ORIGINAL R6/D/28/4/20. 29 APR 1920 X.3619. X.607 RE BATTERY FOR INSIDE FRAME POSITION With reference to EFC7/T20/4/20, I quite agree that until we have proved… | ||
| Scan41 | Mr. Royce's agreed modifications to Lucas dynamo terminals. | ||
| View original record | Re-File from E. Copy to CD. A.W. WY. HS. EFC. ORIGINAL E1/G28/4/20. 29 APR 1920 2 X.3954. RE MODIFICATIONS TO LUCAS TERMINALS. In reply to your memo DA9/CB26/4/20, would you kindly note that Mr. Royce… | ||