Rolls-Royce Archives
| Identifier | Entry | ||
| Scan0 | List of new parts fitted to a car for a 10,000-mile run, with corresponding remarks. | ||
| View original record | EAC 2 -2 EX ORIGINAL. To R. from EH. c.c. to CJ. c.c. to BM. c.c. to L. c.c. to DA. c.c. to EP. C.R. 2 Hs2/LGS.1.20. X.3743. RE CAR TO RUN 10,000 MILES. X.3644 This car will leave here on Wednesday.… | ||
| Scan1 | Continued list of new parts fitted, including part numbers, descriptions, and remarks for changes. | ||
| View original record | R.R. 235 A (100 T) (S F. 575. 16-4-19) G. 2354. Contd. -2- Hs2/LG5.1.20. New parts fitted. Remarks. 11. New type Magneto Drive. X.3530 This is the type with Fabric discs. ✓12. New position of Coil… | ||
| Scan1.1 | Continuation page listing newly fitted parts with their corresponding part numbers and remarks. | ||
| View original record | Contd. -3- New parts fitted. 24. Petrol tank filler brought to the sides. X.3755 25. Luggage Grid. X.3807 26. Silencer .5 lower than standard. X.3642. 27. Transverse wire tube for motor leads. X.2778… | ||
| Scan2 | Mr. Royce's approval and further modifications for the 3/19 gear box drawing. | ||
| View original record | To DA. from E. Copy to Gd. " " BN. " " CK. ORIGINAL X.3/20 RE 3/19 GEAR BOX. E2/G5/1/20. In reply to your memo DAL/CB29/12/19, would you kindly note that Mr. Royce approves of the arrangement shown in… | ||
| Scan3 | Confirmation of a telegram regarding pistons for a ten thousand mile trial. | ||
| View original record | CONFIRMATION OF TELEGRAM. ROYCAR DERBY. HIVES RE PISTONS FOR TEN THOUSAND MILES TRIAL CONSULT MR WORMALD ENDEAVOUR TO FIT TYPE TO DRAWING SENT ON SATURDAY SLIPPER TYPE ADJUSTABLE COLLAPSABLE IF TIME… | ||
| Scan4 | Two schemes related to the gearbox: brake/gear control levers and a front supporting bracket. | ||
| View original record | To DA. from E. Copy to C.L. " " BN. " " HS. " " CK. X.3720 RE 3/19 GEAR BOX. ORIGINAL E2/G6/1/20. D. 8 3 RECEIVED We send you herewith the following two schemes - Lec.1181 - Brake and Gear Control… | ||
| Scan5 | Letter providing drawing No. LeC.1183 with final particulars of the gear box arms. | ||
| View original record | To DAR from E. Copy to C.I. " " DM. " " HC. " " CK. X.3720. ORIGINAL E3/G7/1/20. RE 3/19 GEAR BOX. We send you herewith drawing No. LeC.1183 giving the final particulars you require of the gear box… | ||
| Scan6 | Faults and modifications for the Sylphon water temperature regulator unit for the 40/50 H+P chassis. | ||
| View original record | To BN. from E. Copy to Mr. " " BN " " OY. No. HC. " " CK. X.3563 ORIGINAL EA/07/1/20. 3 RE SYLPHON UNIT FOR WATER TEMPERATURE REGULATOR - 40/50 H+P. CHASSIS. We send you herewith blue print No.3548 of… | ||
| Scan7 | Cover note for re-assembling instructions for the 3/19 gear box. | ||
| View original record | TO DA. from E. Copy to C.J. " " BN. " " HB. " " CK. X.3720 E2/G10/1/2Q. CF RE ASSEMBLING INSTRUCTIONS FOR 3/19 GEAR BOX. ORIGINAL Please find attached some assembling instructions for the 3/19 gear… | ||
| Scan8 | Design and manufacturing advantages of a diagonal web scraper piston with a spring skirt. | ||
| View original record | To BA. from E. Copy to OJ. BN. (struck through) HS. V.329 q. CK. ORIGINAL (stamp) D (stamp) 3 (handwritten) E6/G13/1/20.9 RE DIAGONAL WEB SCRAPER PISTON IN CAST IRON WITH SPRING SKIRT. We send you… | ||
| Scan9 | Providing final drawings and adjustment information for a starter on an American chassis. | ||
| View original record | 4 TO DA. from E. Copy to CJ. " " BN. " " HS. " " CK. X.3740 ORIGINAL RE STARTER FOR AMERICAN CHASSIS. X.3757. We send you herewith drawings Lec. 1185, 1188, and 1189, giving you final information… | ||
| Scan10 | Simplified oil pressure regulating valve for the Goshawk engine. | ||
| View original record | To Da. from E. Copy to CJ. " " Bn. " " Hs. " " Ck. ORIGINAL E1/G15.1.20. X.3784. - GOSHAWK. OIL PRESSURE REGULATOR. In accordance with our memo on the modification to the Goshawk engine starter, we… | ||
| Scan11 | Effect of temperature on dynamo regulation systems, comparing the trembler and third brush methods. | ||
| View original record | To CK. from R. Copy to CJ. " " BN. ORIGINAL X.294. RE DYNAMOS. X.1402 X-4148 R11/G20/1/20. 5 It has occurred to me that as regards the exact time of cutting in and cutting out that the trembler system… | ||
| Scan14 | Potential sound effect of Michelin wheels on the back axle and proposing further tests. | ||
| View original record | To HS. from R. Copy to C.I. (struck through) BN. X.3482 Ref CJH/D23-1-30 ORIGINAL R3/G28/1/20 3 RE MICHELIN WHEELS. Since you have got the impression that Michelin wheels may have some effect on the… | ||
| Scan16 | Dynamo cutting-in speeds, electrical loads, and performance issues. | ||
| View original record | ORIGINAL. D To DN. from R. Copy to CJ. " " CK. " " HS. " " PN. X.3014 RE DYNAMOS. I have received your memo BN12/W16/1/20 relating to cutting in speed of dynamos. Our specification is that the dynamo… | ||
| Scan17 | Dynamo performance, potential modifications, and a recent failure. | ||
| View original record | To BN. from R. -2- R2/G23/1/20 Contd. from the lighting system in series with one of the incandescent lights of the garage. If, however, the lighting of the garage is done by an alternating current,… | ||
| Scan18 | Letter discussing the ineffectiveness of a ballast resistor as a fuse replacement in a constant current dynamo's field circuit. | ||
| View original record | To CK. from R. Copy to CJ. " " BN. " " OY. X 294 ORIGINAL RE CONSTANT CURRENT GENERATORS. X.3Y/6 X.2875 I am sorry you went to the trouble of putting the ballast resistance in place of a fuse in the… | ||
| Scan19 | Desaxé Crossley piston design and its potential to cause seizing. | ||
| View original record | To EN. ) from R. " HS. ) ✓ Copy to CG. ORIGINAL 3 R6/G27/1/20. X.2/48 RE PISTONS. The Crossley piston is desaxé in the piston pin. This might well cause it to seize as the out of centre load due to… | ||
| Scan21 | Evaluating American-made pressure gauges for use on American chassis, comparing them to existing Salter gauges. | ||
| View original record | To R. from Hs. c.c. to C. c.c. to BN. c.c. to OY. c.c. to Na. c.c. to Wor. ORIGINAL 2 Hs4/LG27.1.20. X.3493. RE. PRESSURE GAUGES FOR AMERICAN CHASSIS. We have received an oil pressure and an air… | ||
| Scan23 | Discussion about designing a suitable petrol gauge for a rear fuel tank, abandoning one design and proposing alternatives for consideration. | ||
| View original record | To BN. from R. Copy to CJ. " " DA. " " HS. " " PN. X.3882 ORIGINAL R1/G28/1/20. 4 RE PETROL GAUGE ETC. ON THE FUEL TANK OF CAR. I have spent a considerable amount of time in attempting to make the… | ||
| Scan24 | Hand-drawn diagram of a petrol level measuring device. | ||
| View original record | HAND PUMP ON CHASSIS ABOUT 4" VV GALLONS 18 16 14 12 10 8 6 4 2 0 By delivering a small quantity of air with a gentle stroke of the pump the U tube is made to indicate the difference in pressure due… | ||
| Scan25 | List of modifications and improvements made to a brush holder for a 40/50 HP starter motor. | ||
| View original record | To DA. from E. Copy to Cdr " HN. " HS. " CK. X.3886 ORIGINAL. RE BRUSH HOLDER FOR STARTER MOTOR. 40/50 H.P. CHASSIS. On the 24th instant we sent to you drawing No. Lec.1193 shewing a design of brush… | ||
| Scan26 | Design of a luggage carrier, comparing the viability of drop forgings versus sheet metal pressings. | ||
| View original record | To DA. from R copy to CJ. BM. HS. CK. X.3507. RE LUGGAGE CARRIER ETC. ORIGINAL. R1/G28/1/20. 24.1.20 3 I think it would be advisable to complete the whole design of this luggage carrier, as well as… | ||
| Scan27 | Design suggestions for a highly stressed hinge, sheet metal brackets, and a luggage grid. | ||
| View original record | To D.A. From R. -2- R1/G28/1/20 Contd. I do not suggest that you follow drawing Lec.178, but the design may be useful. The highly stressed type of hinge is easily applied if you make the bracket of… | ||
| Scan28 | Modifications for petrol tanks, luggage carriers, fillers, and gauge fittings. | ||
| View original record | To DA. from R. -3- 3 R1/G28/1/20 Contd. which serves as a better protection for the petrol tank. This other design will require considerable modifications to the various fittings and will have to… | ||
| Scan29 | Modifications to the carburettor and fuel tank filter for American cars, referencing the 'Condor' design. | ||
| View original record | 3 To DA. from R. -4- R1/G28/1/20 Contd. it appears impossible to damage it or for it to leak the air pressure, which is so very important, and it avoids a cock lubricated with petrol in a dirty place,… | ||
| Scan30 | The starter gear for the Goshawk chassis, referencing drawing No. LeC.1192. | ||
| View original record | To DA. from E. Copy to CI. " " BN. " " CK. " " HS. ORIGINAL X-3616 RE STARTER GEAR - Goshawk CHASSIS We send you herewith drawing No. LeC.1192 shewing the above. We have already described the… | ||
| Scan31 | The Goshawk engine's water inlet pipes and connections, referencing drawing No. 1196. | ||
| View original record | To DA. from E. Copy to CJ. BN. CK. X.3586 ORIGINAL RE Goshawk WATER INLET PIPES AND CONNECTIONS. We send you herewith drawing No. 1196 shewing the above. You will notice that the pipe has been taken… | ||
| Scan32 | Telegram regarding Condor rod modifications and a subsequent bearing failure after testing. | ||
| View original record | ORIGINAL. 8.1.20. ROYCE, "ELMSTEAD" WEST WITTERING. X.2059 X.3254 CONDOR RODS ALL THE MODIFICATIONS INSTRUCTED BY YOU LAST JUNE WITH THE EXCEPTION OF THE NEW FORGING FOR THE PLAIN ROD WERE… | ||
| Scan34 | Petrol and air leak in a new type of rear shock absorber, recommending a design alteration. | ||
| View original record | To R. from Hs. c. to CJ. c. to BN. c. to Du. c. to E. c. to EP. ORIGINAL C.R. HS3/LG19.1.20. X.34616. NEW TYPE REAR SHOCK ABSORBERS. X 3451 We have had a case where petrol and air pressure has leaked… | ||
| Scan35 | Experiments investigating spark length in a chassis battery ignition system at various speeds. | ||
| View original record | To R. from Ck. c. to CJ. c. to E. c. to Bn. c. to Da. c. to EP. c. to Ba. ORIGINAL X.3129 - CHASSIS BATTERY IGNITION X.3199 (A) Loss of Spark Length due to Seconda Variable Gap. (B) Spark Length at… | ||
| Scan36 | Calculated figures for the current in a contact breaker coil at various speeds. | ||
| View original record | Contd. -2- CK3/T20.1.20. Our calculated figures for the coil at 500 R.P.M. of the contact breaker show that the final current to which the rise of current approximates is 2.9 amps, that the current at… | ||
| Scan37 | The loss of spark length in a chassis battery ignition system due to a second variable gap. | ||
| View original record | X.3129. CHASSIS BATTERY IGNITION A. Loss of spark length due to second variable gap using R.R. standard ignition coil and contact breaker. The H.T. lead of an R.R. ignition coil was connected to a… | ||
| Scan38 | Test results on the effect of contact breaker speed on spark length. | ||
| View original record | -2- Contd. B. Effect of contact breaker speed on length of spark. Coil. R.R. standard. Spark Gap. Platinum point gap as previously used for various spark tests. (a) The high tension cable (1 1/4 feet… | ||
| Scan41 | Starter motor failure caused by grease working its way onto the commutator. | ||
| View original record | R R 235 A (100 T) (S.F. 846. 6-8-19) G. 2460. ORIGINAL. To Bn. from Hs. c. to Da. c. to EP. c. to CK. Hs1/LG20.1.20 X.3082 RE STARTER MOTOR FAILURE DUE TO GREASE WORKING ITS WAY ON TO THE COMMUTATOR.… | ||
| Scan42 | Experiment testing the use of ballast resistance in place of a fuse in constant current generators. | ||
| View original record | To R. from Ck. c. to CJ. c. to Bn. c. to OY. ORIGINAL Ck9/T21.1.20. X.294. - CONSTANT CURRENT GENERATORS. X.3716. Use of Ballast Resistance in place of Fuse. X.3014b. Referring to Mr.Olley's note… | ||
| Scan43 | Continued report on dynamo performance, discussing the effects of adding ballast resistance to the field current. | ||
| View original record | Contd. -2- Whereas a material reduction in the field current is secured by the addition of this amount of ballast resistance, which reduction would lessen the possibility if the field coil being… | ||