Rolls-Royce Archives
| Identifier | Entry | ||
| Scan1 | Observations on the manufacturing process of Bakelite commutators. | ||
| View original record | ORIGINAL FC 4 TO BY. from R. R7/G4/8421 Copy to G.J. HY. EPC. AUG 5 RECEIVED X.3573. RE BAKELITE COMMUTATORS. X.3945 X 3348 We notice that the commutator plates are made from drawn section and the… | ||
| Scan2 | The design of inspection and filler plugs for the Goshawk II gearbox. | ||
| View original record | To HS. from R. Copy to CJ. " " DA. " " DY. (Stamp: RECEIVED) X4247 ORIGINAL. RE "GOSHAWK II" GEAR BOX. The inspection plugs shewn on LeC.1360 were intended for the oil level, the plug at the top being… | ||
| Scan3 | Calculations and the practical mechanical construction of the Goshawk II starter motor. | ||
| View original record | 2 FO To JUEFCs from R. Copy to CJ. ORIGINAL. R1/G7/7/21. [Handwritten:] X.438 4 [PURPLE TRIANGLE STAMP] RE "GOSHAWK II" STARTER MOTOR. RECEIVED We are very pleased to receive your calculations which… | ||
| Scan4 | Modifications to the hot throttle induction pipe to improve engine performance with poor quality petrol. | ||
| View original record | To HS. from R. Copy to CJ. " " BJ. " " WOR. " " BY. " " R.R. of America Inc. (For the attention of OY.) ORIGINAL X4305 RE HOT THROTTLE INDUCTION PIPE. With reference to Mr. Olley's cablegram, though… | ||
| Scan5 | Failure of a cell in an Exide battery due to faulty components and a request for a replacement. | ||
| View original record | To EFC. from R. Copy to SJ. [struck through] ORIGINAL. [stamp] X.3619. RE FAILURE OF CELL OF EXIDE BATTERY ON 6 EX. We are endeavouring to tinker up the Exide battery so as to keep the car going. I am… | ||
| Scan6 | Instruction on the cross steering tube, advising that a hole should not be made and precautions taken to prevent spelter formation. | ||
| View original record | To HS. from R. Copy to CJ. " " DJ. " " BY. " " R.R. of America Inc. (For the attention of OY.) ORIGINAL X3441 RE CROSS STEERING TUBE. With reference to OY6/G19/7/21 regarding the above, the hole… | ||
| Scan7 | The bump test comparison between American-made front springs and standard Woodhead springs. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Dn. c. to EY. c. to EWT. for R.R.Inc. – ORIGINAL Hal/LG10.8.31. X2628 X3764 PARTS FITTED TO 4.EX CAR IN U.S.A. X3900. The front springs fitted to 4.EX Car were… | ||
| Scan9 | The quality and testing of Bleriot Phi cutouts. | ||
| View original record | 5EX ORIGINAL. To R. & E. from EPC. c. to CJ & FN. c. Ey & Rg. c. Da & EP. c. R.H. of American Inc. EFC1/T11.8.21. X.4215 - BLERIOT PHI CUTOUTS. Since last reporting on the above (see our report… | ||
| Scan11 | Laboratory analysis comparing the chemical composition of an American spring and a Woodhead's spring. | ||
| View original record | COPY Hs. H11/KB11.S.21. Laboratory. Re American Spring and Woodhead's Spring Analysis. American. Woodheads. Carbon .42 .55 Manganese .85 .40 Nickel nil nil Phosphorus .017 .032 Silicon 1.78 .85… | ||
| Scan12 | Letter regarding a new 'hot spot' induction pipe design using a butterfly valve to improve heating. | ||
| View original record | To R.R. of America Inc. from R. (For the attention of C.Y.) Copy to Mr HS. ORIGINAL RECEIVED AUG 12 1921 X4305 RE HOT SPOT INDUCTION PIPE. I have received your letter with reference to the hot… | ||
| Scan13 | Letter detailing design improvements for a 40/50 HP rear tank, proposing a new lighter construction and fittings. | ||
| View original record | To R.R. of America Inc. from R. (for the attention of Gr.) Copy to Gd. " " HS. ORIGINAL.R5/G11/8/21 X3451 X3701 RE REAR TANK - 40/50 H.P. We hope to send you a print of the drawing of the rear tank,… | ||
| Scan14 | The design and sourcing of 40/50 HP hand-operated louvres. | ||
| View original record | To R.R. of America Inc: from R. (For the attention of OY.) Copy to CJ. " " HS. " " BY. ORIGINAL R6/G11/8/21. 2 X3456 RE 40/50 H.P. HAND OPERATED LOUVRES. Owing to the pressure of other work, we have… | ||
| Scan15 | The Delco combined lighting and ignition switch, noting potential design flaws and reliability issues. | ||
| View original record | To R.R. of America Inc. from R. (For the attention of O.Y.) Copy to G.J. " " H.S. " " EPC. X X.805 RE IGNITION SWITCH. With reference to combined lighting and ignition switch, it is assumed that you… | ||
| Scan16 | Modifications to the 'Goshawk II' flywheel casing. | ||
| View original record | TO BY. from R. Copy to: GJ, NOR, HS, DA, EPC ORIGINAL X4244 RE "GOSHAWK II" FLYWHEEL CASING. Herewith please receive drawing Lec.1437 shewing modifications to "Goshawk II" flywheel casing. The… | ||
| Scan17 | The design and drawing Lec.1436 for the 'Goshawk II' dynamo. | ||
| View original record | To DY. from R. Copy to CR. " " MOR. " " HS. " " DA. ORIGINAL R9/013/8/21. X4383 RE "GOSHAWK II" DYNAMO. X1815 Herewith please receive drawing Lec.1436 shewing the dynamo for "Goshawk II". The… | ||
| Scan18 | Declining interest in the cold moulded insulation materials Thermoplax and Pyroplax. | ||
| View original record | To EFC. from R. Copy to CJ. ORIGINAL. R4/G15/8/21. X.2494 - COLD MOULDED INSULATION - THERMOPLAX AND PYROPLAX. I thank you for yours (EFC1/T10/8/21) attaching description of Thermoplax and Pyroplax,… | ||
| Scan19 | Sending drawings for 'Goshawk' dashboard and footboard brackets. | ||
| View original record | To D.A. from E. Copy to C.I. " " WOR " " DV " " HS " " E.O. ORIGINAL EL/G19/8/21. x4264 x4270 RE "GOSHAWK" DASH AND FOOTBOARD BRACKETS FOR "B" AND "D" STEERING. We send you herewith drawings Lec.1424… | ||
| Scan20 | Suggestion for a method to expand tubes in the 'Goshawk II' cylinder block, approved by Mr. Royce. | ||
| View original record | To HS. from E. Copy to CJ. Copy to WOR. Copy to DA. Copy to BY. ORIGINAL REC'D AUG 27 X4225 RE "GOSHAWK II" CYLINDER STUD TUBES. Referring to the method of opening out the tubes in the "Goshawk II"… | ||
| Scan21 | With a sketch detailing a modification to the Goshawk II cylinder head for oil drainage. | ||
| View original record | To PA. from E. Copy to Cdr. WORX BY HS. ORIGINAL. X4225 RE "GOSHAWK II" CYLINDER HEAD. Referring to the question of the oil drainage of the top face of the cylinder head, the way through for the oil… | ||
| Scan22 | The dynamo and starter motor for the 'Goshawk II'. | ||
| View original record | To EFC. from E. ORIGINAL E1/G24/8/21. X.4342 X.4359. RE DYNAMO AND STARTER MOTOR FOR "GOSHAWK II". X.4342R. In reply to your memo EFC1/T15/7/21, and with reference to your EFC6/T19/8/21, giving… | ||
| Scan23 | Requesting an order be placed with the Lucas Company for a dynamo and starter motor for the 'Goshawk II'. | ||
| View original record | To WD. from DA/T. COPY: DA/T1/G15/8/21. X.4342L X.4359L X.4342R RE DYNAMO AND STARTER MOTOR FOR "GOSHAWK II". In reply to your memo WD5/NJ10/8/21, we should be glad if you would kindly place on order… | ||
| Scan24 | The chief features of the non-trembler battery ignition system for the 'Goshawk II' engine. | ||
| View original record | To Mr. Walker, from R. ORIGINAL Copy to C.W. * * H.S. R6/G29/8/21. X 4403 RE CATALOGUE AND INSTRUCTION BOOK FOR THE ELECTRICAL AND IGNITION SYSTEM FOR "GOSHAWK II". The chief features of our… | ||
| Scan25 | Special features of an ignition system, including a trailing edge rotor to prevent engine back-firing. | ||
| View original record | To Mr. Walker, from R. -2- R6/G29/8/21 Contd. of providing a spark gap in front of the plug, and so demanding less perfect insulation of the ignition plug. (5) It is fitted with a R.R. special feature… | ||
| Scan26 | Performance of different battery makes and proposing continued tests on the Peto & Radford battery. | ||
| View original record | To EFC. from R. Copy to OJ. [Strikethrough] " " TN. [Strikethrough] CONFIDENTIAL. ORIGINAL [Stamp] R4/G30/8/21. X.3398 [Handwritten and underlined] RE STORAGE BATTERIES. X.607 [Handwritten and struck… | ||
| Scan27 | Continued list of three desirable characteristics for an electrical storage component. | ||
| View original record | To EFC. from R. -2- R4/G30/8/21 Contd. (1) Durability. (2) Capacity for high rate of discharge without excessive drop of voltage for short intervals. (3) Absence of internal and external leakage so as… | ||
| Scan28 | Requesting the standardisation of an improved rocker shaft for the 40/50 HP steering box. | ||
| View original record | To HS. from R. Copy to C.J. ORIGINAL. 2300 JJ(12-S-91) 989 H.2 (T 90) A88 2 R14/G31/8/21. X.3920 - IMPROVED ROCKER SHAFT FOR 40/50 H.P. STEERING BOX. With reference to your memo HS5/LG25/8/21, would… | ||
| Scan29 | Mr. Royce's decision on approved suppliers for dynamos and motors, cancelling an enquiry with Messrs. Brolt. | ||
| View original record | To EFC. from DA. Copy to BY. ORIGINAL DA1/G31/9/21 X.4359B & 4342B - BROLT DYNAMO AND STARTER. Replying to your EFC5/T19/8/21 and EFC2/T11/7/21, we have taken this question up with Mr. Royce and he… | ||
| Scan30 | Requesting the standardisation of the X.4373 radiator support bracket. | ||
| View original record | To HS. from R. Copy to CJ. [struck through] ORIGINAL [stamp] RECEIVED [stamp] SEP 5 1921 [stamp] R15/G31/8/21. X.4373 - RADIATOR SUPPORT BRACKET. With reference to your memo HS4/LG25/8/21, would you… | ||
| Scan31 | Spark test report on the carbonization of Elo and Bakelite materials compared to ebonite. | ||
| View original record | EFC. AB.15 4th Aug. 1921. X.3513 - SPARK TEST OF ELO AND BAKELITE. The piece of Elo received from Mr. Bailey under By5/P7.7.21 has now been tested for carbonization due to surface sparking. A very… | ||
| Scan32 | Cover memo for an assistant's report on spark test experiments on 'ELO' and 'BAKELITE'. | ||
| View original record | ORIGINAL To By. from EFC. c. to R. c. to CJ. c. to Da. EFC3/T5.8.21. X. 3513 - SPARK TEST OF "ELO" AND "BAKELITE". Referring to your By5/P7.7.21, please find attached copy of my assistant's report on… | ||
| Scan33 | Criticisms of the Goshawk 11 engine, specifically addressing a seizing clutch trunnion sleeve during testing. | ||
| View original record | [Crossed out illegible text] ORIGINAL Hal/LCS. 8. 21. "GOSHAWK 11" CRITICISMS CONTD: X4219 Clutch Trunnion. On the engine on test we have had the sleeve seize up which operates the clutch levers. This… | ||
| Scan34 | Issues found during tests on the spring drive, a retaining bolt, and induction/exhaust pipes. | ||
| View original record | contd. -2- Hal/LGS. 8. 21. ************ Spring Drive. When making tests on the Spring Drive, we finally assembled it as we imagined, standard. We found by the terrific noise which came from the… | ||
| Scan35 | Oil pump noise, engine suspension vibrations during testing, and carburettor flow issues. | ||
| View original record | contd. -3- HS1/LGS.3.21. ============== extended so that the nut is above the diameter of the pipe. We also recommend that brass nuts should be used on the exhaust pipe studs. Noise from Oil Pump.… | ||
| Scan36 | Carburetter flooding issues, jet adjustments, lever grip, and the oil level indicator. | ||
| View original record | Contd. -4- HAL/LGS+S.21. ************** minute to pass the needle valve and at the same time for the carburetter not to flood. We have looked into this and suggest that it is due to the float not… | ||
| Scan37 | Suggested improvements for oil measurement markings, oil filter accessibility, and flywheel inspection cover design. | ||
| View original record | Contd. -2- marked off in .3, .5, .7, and 1 gallons. We think it would be much more easily read by the average person if it was marked off in ¼, ½, ¾, and 1 gallons. Quite a number of people do not… | ||
| Scan38 | Recommendations for improving cover detachment and standardising plugs in cylinders and gearboxes. | ||
| View original record | Contd. -6- There is no location for the cover at present so that it is a two-handed job to start the first screw. We recommend that the fixing of this cover should be made more easily detachable. Core… | ||
| Scan39 | Outlining criticisms and proposed changes for the 'Goshawk 11' oil pump and valve push rods. | ||
| View original record | Hs2/LG ORIGINAL. To R. from Hs. c. to CJ. c. to E. c. to Da. - c. to BY. - c. to Wor. Hs2/LGd. 8.21. X4219 "GOSHAWK 11" CRITICISMS CONTD: Oil Pump. We have had trouble with the steel connections which… | ||
| Scan40 | Fire risk associated with the steering column switch. | ||
| View original record | R.R. 235B (100 T) (S.H. 798 10-12-20) C.2948 From Hs. ORIGINAL c. to CJ. c. to E. c. to EY. c. to Da. c. to EF. H.G.6/L.G.8.21. X1413 X3431 STEERING COLUMN SWITCH. We think the danger of fire pointed… | ||
| Scan41 | Proposed and inexpensive vent for the 40/50 chassis crankcase. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Hs. c. to EY. ORIGINAL. HsB/LCS.8.21. X3908 VENT FOR 40/50 CHASSIS CRANKCASE+ During our last visit to Mr. Royce, we left with Mr. Elliott a blue-print showing… | ||
| Scan42 | Test results for a starter motor on a car with a 3-speed gearbox under cold, warm, and hot conditions. | ||
| View original record | TESTS ON STARTER MOTOR FOR CAR WITH 3-SPEED GEAR BOX. Conditions - Engine cold - car having been left all night. Temperature of motor carcase 13°C. Voltage of battery 12.4 Resistance in switch .201… | ||
| Scan43 | Comparative test results for a motor with and without an epicyclic gear, and with varying numbers of brushes. | ||
| View original record | -2- Comparative test taken with and without epicyclic gear fitted to motor - no quantity of oil in gear. Resistance in switch .201 Ohms. Test No. Voltage at motor. Amps. Speed of motor. Whether Epic:… | ||
| Scan44 | Receipt, inspection, and potential use of cold moulded insulation samples named Thermoplax and Pyroplax. | ||
| View original record | To R & E from EFCl c. to CJ & PN. c. to Ry. & Rg. c. to EP. & Da. c. to R.R. of America Inc. c. Wd. ORIGINAL X.2494 - COLD MOULDED INSULATION - THERMOPLAX AND PYROPLAX. We have recently received from… | ||
| Scan45 | Continued page of a letter concerning an enquiry to the Igranic Electrical Co. for raw materials. | ||
| View original record | Contd. -2- EFC/T10.8.21. various properties and uses of these materials. We have had no direct answer to our enquiry to the Igranic Electrical Co. as to whether they are prepared to supply the raw… | ||
| Scan46 | Vibration test report for a standard Exide battery, including charge and discharge data. | ||
| View original record | R.R. 235A.(100 T) (S.H. 159. 11-8-20) G. 2800 ORIGINAL To R & E. from EFC. c. to CJ. & PN. c. to By. & EP. c. to Rg. & Da. c. to R.R. of America Inc. EFC1/T12.8.21. X.3937 - VIBRATION TEST OF STANDARD… | ||
| Scan47 | Results of a battery vibration test and the subsequent examination of the cells. | ||
| View original record | Contd. -2- Examination of these figures will show that the ampere-hours of each charge have been roughly the same. It will be noted that the ampere-hours of discharge have not materially altered… | ||
| Scan48 | Battery cell failures, comparing the effects of mechanical vibration and incorrect electrical treatment. | ||
| View original record | Contd. -3- EFC1/T12.8.21. This fact, together with the fact that we have, on cells with elements insufficiently separated, experienced failures by buckling and shorting when the cell has done nothing… | ||
| Scan49 | The condition and performance testing of battery cells. | ||
| View original record | Contd. -4- EFC1/T12.8.21. This has been accomplished by placing the cell in one of the supply mains in our laboratory, so that it would be receiving normally about 10 amperes charging current, and… | ||
| Scan50 | Battery plate deterioration due to cycles of overcharging and discharge, with plans for further vibration and electrical tests. | ||
| View original record | Contd. -2- EFC1/T12.8.21. having flaked off the surfaces of the plates. This rather bears out, as we have heard, that continuous overcharging alone does not deteriorate the plates very much, but what… | ||
| Scan51 | Performance report on two Peto & Radford batteries, No.14 and No.40, detailing their on-road and bench test results. | ||
| View original record | To H.R.X. from EFC. c. to CJ. & PM. c. to Hy. EP. &: to R.R. of America Inc. ORIGINAL EFC2/T12.8.21. X.3368 - PETO & RADFORD BATTERIES - X664 The two more recently received Peto & Radford batteries (… | ||
| Scan52 | Comparison of car batteries, including Peto & Radford and C.A.V-Willard, based on performance, efficiency, and weight. | ||
| View original record | Contd. -2- EPCR/T12.8.21. has been running on the Demonstration Car since January last, having run 15,000 miles in all. We have had several satisfactory reports of this battery, the last one stating… | ||
| Scan53 | Comparison of C.A.V-Willard, U.S.A. Willard, and Exide batteries, discussing weight, capacity, efficiency, and lifespan. | ||
| View original record | Contd. -3- EFC2/T12.8.21. C.A.V-Willard are round about 80 lbs. only, whereas their lighting capacities are about 55 and 65 ampere-hours. The U.S.A. Willard battery, also of weight round about 80… | ||
| Scan54 | Bent side steering rod on car 4.EX, concluding the pendulum lever does not need strengthening. | ||
| View original record | To R. From Hs. c. to CJ. c. to E. c. to Da. c. to BY. c. to EWT.for R.R.Inc. ORIGINAL. Hs2/LG15.8.21. X205 x3764 PENDULUM LEVERS. When I was with 4.EX Car in U.S.A. last Winter the side steering rod… | ||
| Scan55 | Experiments and further tests of tungsten contact points. | ||
| View original record | To Rh E. from c. CJ & FB. c. Dy & Da. c. Rg & Mr. c. R.R. of America Inc. ORIGINAL EFCS/316.8.21. X. 2894 - TUNGSTEN CONTACT POINTS. x 3129 Herewith please receive copy of my assistant's report on… | ||
| Scan56 | Potential causes for roller rusting, suggesting oscillatory discharges and sparking from induced high-frequency oscillations. | ||
| View original record | Contd. -2- EFCG/T16.8.21. as our experiments have recently suggested to us that the condenser capacity might be increased a little to advantage. With reference to the rusting up of the roller, this… | ||
| Scan57 | Further tests of two sets of tungsten contact points supplied by the Fansteel Co. | ||
| View original record | EFC. AB.18 X.2894 - FURTHER TESTS OF TUNGSTEN CONTACT POINTS. Two further sets of tungsten points by the Fansteel Co. have been tested; one (AD) using a condenser with an earthing terminal, and the… | ||
| Scan58 | Results of a 180-hour test on tungsten contacts, noting misfiring, metal transfer, and rust. | ||
| View original record | -2- Contd. for 180 hours during which time misfiring and contact sparking became worse. During the run the make ratio of the contacts had altered from the standard .5 to .83. This was probably due to… | ||
| Scan59 | Engineering memo detailing observations and proposed modifications for the Goshawk 11 engine. | ||
| View original record | To R. from Hs. c.c. to CJ. c.c. to E. c.c. to Da. c.c. to BY. c.c. to Wor. ORIGINAL. X4219 GOSHAWK 11 ENGINE. The bolts carrying the front springs are at present instructed with the end of them… | ||
| Scan60 | Testing, cost, and potential local sourcing of extruded copper tubes for radiators. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to HY. c. to EWT. for R.R.Inc. ORIGINAL. Hal/LGEO.8.21. X.X3456 EXTRUDED COPPER TUBES FOR RADIATORS. Y3678. We have completed 100 hours running on the… | ||
| Scan61 | Letter regarding a list of complaints for the Goshawk 11 engine, detailing issues with parts and recommending changes. | ||
| View original record | E. from Hs. ORIGINAL. Hs2/LG23. 8. 21. X4219 RE. GOSHAWK 11. ENGINE. Attached herewith is a list of complaints which we have made On Goshawk 11. engine unit. It would help us tremendously if you could… | ||
| Scan62 | List of complaints and suggested improvements for various vehicle components. | ||
| View original record | COMPLAINT YOUR REMARKS. Spring Drive can easily be assembled with the friction plates in the wrong position. Retaining bolt for spring drive turns round in crankshaft. Deeper bosses in inlet and… | ||
| Scan63 | List of complaints and requested modifications for various automotive components. | ||
| View original record | COMPLAINTS YOUR REMARKS Lubricators all over chassis should be modified to take "Enots" 1/8" gas lubricator. 2.BA Bolts in front cross member not strong enough. All over the chassis there are… | ||
| Scan64 | Recommending the standardisation of a radiator support bracket after successful testing. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to HY. ORIGINAL. Hs4/LG25.8.21. X.4373 - RADIATOR SUPPORT BRACKET. We have completed 100 hours running on the Bump with the radiator support brackets… | ||
| Scan65 | Performance estimate comparing a Goshawk II motor applied to a Goshawk I engine with a different reduction ratio. | ||
| View original record | To R. from EFC. ORIGINAL EFC1/T30.8.21. c.c. to CJ. c.c. to E. c.c. to Da. c.c. to Da/T. } at W. Wittering. X.4384 - "GOSHAWK II" MOTOR APPLIED TO "GOSHAWK I" ENGINE. We attach table showing our… | ||