Rolls-Royce Archives
| Identifier | Entry | ||
| img001 | Description of an oil leakage prevention method using glands and a Jubilee clip, with notes on a magnesium alloy cylinder casting. | ||
| View original record | -2- The method employed to prevent oil leakage is rather complicated, and as can be seen on the attached drawing, requires four rubber or composition glands, the large outer gland being rather crudely… | ||
| img002 | Results of an engine acceptance and endurance test, including a failure analysis of a flexible drive. | ||
| View original record | -2- Test (b) was run simultaneously with a detonation test which was being carried out on the engine as a supplement to the evaporatively cooled type test on K.II.MS.39. (a) Acceptance Test. This test… | ||
| img003 | Gearbox issues, experiments, and proposed solutions for gear change problems. | ||
| View original record | ORIGINAL To M. from Hs/Gry. c. to Dr. c. to F. Ry. c. to M. I.II. FOUCARMONT. X7 310. It was reported on LY-1 in France, that top gear worked out as well as 3rd. The former we could not understand… | ||
| img004 | Blueprint detailing modifications for an evaporative cooling system on a Kestrel engine. | ||
| View original record | EVAPORATIVE COOLING IB KESTREL NEW CARBS IN VEE MODIFICATIONS REQUIRED TO MAKE THE TOP WATER SYSTEM EFFICIENT WHEN OPERATING UNDER EVAPORATIVE COOLED CONDITIONS HOLDING DOWN STUDS & CONTROL TUBES… | ||
| img005 | Blueprint showing an alternative evaporative cooling system with extra water pipe leads for a Kestrel engine. | ||
| View original record | EVAPORATIVE COOLING IB KESTREL NEW CARBS IN VEE. SKETCH 2. ALTERNATIVE METHOD OF EXTRA WATER PIPE LEADS. ALL OTHER MODS AS FOR SCHEME 1. FRONT. REAR. A BLOCK CYLINDERS. B BLOCK CYLINDERS. CARB. CARB.… | ||
| img006 | Comparison between an existing and proposed new gland fitting to improve water flow for an evaporative cooling system on a 1B Kestrel engine. | ||
| View original record | FIG I EXISTING GLAND FITTING & INTERCONNECTING PIPE CYL BLK WATER OUTLET PORT 1.6" DIA. GLAND FITTING 1.434" DIA. INTERCONNECTING PIPE 1.25" DIA SCALE 1/1 FIG II SKETCH 3 PROPOSED NEW GLAND FITTING &… | ||
| img007 | Chassis wiring, the condition of existing cables, and retaining the current conduit system. | ||
| View original record | R. from Hs/Wst. c.c. Hy. c.c. SBr. c.c. HW ORIGINAL Hs/Wst.5/LES.4.32. CHASSIS WIRING X6040 With reference to NS/MR.4.32 on the above, we had no intention of recommending any change from our colour… | ||
| img008 | Tracking test comparing Bosch moulded insulation with standard bakelite for ignition coils. | ||
| View original record | R. from HE/Wst. c. Sg. c. WOY. E. c. EV. Dn. He/Wst.9/ADB.4.32. X6110 BOSCH MOULDED INSULATION With reference to H1/HP23.3.32. addressed to R, we have carried out a tracking test on a sample of this… | ||
| img009 | Design and performance of the Bentley & Draper shock absorber. | ||
| View original record | R. From Hs/Rn. C. to Sg. Nor. C. to A. Ey. Hs/Rn. 9/M.S. 4. 4. 32. BENTLEY & DRAPER SHOCK ABSORBER. X832 With reference to Sg.12/L.4.4.32. We attach print and description of the B. & D. shock absorber… | ||
| img010 | Description of the design features and operation of the Bentley & Draper shock damper. | ||
| View original record | BENTLEY & DRAPER SHOCK DAMPER. The most peculiar feature of this damper is the diameter of the piston, which, being only .875" must generate very high internal pressures for given ball pin loads when… | ||
| img011 | Misfiring at low speeds and the impact of spark plug gap size on slow running performance. | ||
| View original record | To H. From Hs. c. to __ By. c. to __ For. c. to FK. ORIGINAL CHASSIS BATTERY IGNITION. X6095 With reference to the attached. The mis-firing at low speeds has been difficult to locate. On the last 25… | ||
| img012 | Violent flow reversal issues during tests of Gyrol clocks on a Whirlwind EA 10 engine. | ||
| View original record | -4- HS/GJB.3/21.11.41.cont'd GYROL CLOCKS AT V.T.N.A. TARLETON on Whirlwind Engine. EA 10. In the early stages of our tests the reversal of flows were so violent that we were not surprised at anything… | ||
| img013 | Comparing the performance of a new coil versus an old coil with varying plug gaps. | ||
| View original record | A. From HS/Hst. c. to Sy. c. to Ss. H.T. c. to M. IGNITION APPARATUS PLUG AND SPARKING VOLTAGE We thank you for your E.1/M.2.4.32., with reference to the above. Before we standardized our new coil we… | ||
| img014 | Potential causes for engine misfiring, focusing on spark plug gaps, point erosion, and tungsten contact point oxidation. | ||
| View original record | -2- Whilst we agree that with smaller plug gaps the H.T. electric stresses are less we do feel that a plug gap below .020" will increase spark point erosion and make the KLG gas setting more critical… | ||
| img015 | Engine testing and the fitting of a completely mounted body for J.3. | ||
| View original record | SECRET. To R. From Hs. c. to Sk. Dr. c. to Rs. Da. c. to Ry. J.3. We expect to fit the body completely mounted and finished, on J.3., sometime next week. We have run the second engine unit on the test… | ||
| img016 | Details and specifications for an Alfa-Romeo clutch. | ||
| View original record | ORIGINAL To E. From He/Gry. c. to Da. By. c. to Wor. c. to Da/Ev. Ha/Gry./W.J.11.4.32. 14483. ALFA-ROMEO CLUTCH. Replying to Ev.1/HP.6.4.32., we have collected the following details :- (1) The clutch… | ||
| img017 | Engine mounting modifications for the 89UL chassis, series N.2 onwards. | ||
| View original record | ORIGINAL X7 005. E. From Hs/Les. c. to Hy. c. to Nor. c. to Sft. Hs/Les.1/MA.11.4.32. E.2. ENGINE MOUNTING FOR 89UL. CHASSIS IN N.2. SERIES ONWARDS. Owing to the pedals now being no longer supported… | ||
| img018 | Agreement on a procedure for setting clearances on rubbers due to frame deflection from engine weight. | ||
| View original record | -2- HS/Les.1/A.11.4.32.cont'd. We agree to this as the first part of the procedure, but owing to the frame deflection from the weight of the engine, the slight difference between the jig and the… | ||
| img019 | Investigation into high pressure in an engine's evaporative water cooling system and proposals for modifications. | ||
| View original record | R. From AG/GMD. C. to Mr. C. to Mr. H. C. to Mr. HV. x2965. x2444. EXPERIMENTAL ENGINES. SPECIAL AERO WATER SYSTEM. (CLAIM NO. 2444.) Further investigation has been carried out on a 1S engine fitted… | ||
| img020 | Modifications to engine piping systems, including increasing pipe diameters and refining outlet connections under different schemes. | ||
| View original record | -2- HA/R18.A24/AM.11.4.32 cont'd (2) Parts to be modified :- The interconnecting pipe. Modification:- The dia of the pipe to be 1.5" O.D and to have a connection fitted to take a 1" O.D pipe. (3)… | ||
| img021 | Tests and recommendations for modifying a cooling system to reduce pressure and prevent flow reversal. | ||
| View original record | -3- TEST RESULTS. The foregoing schemes are satisfactory in that cyl block pressures are effectually reduced and thereby minimising the risk of a reversal of flow. IMPORTANT. Apart from the… | ||
| img022 | Sending of an arrangement drawing for an Alfa Romeo clutch. | ||
| View original record | E. From Hs/Gry. C. to Da. Hs/Gry.2/MA.13.4.32. ALFA ROMEO CLUTCH. We are sending you herewith an arrangement drawing of this clutch. Would Da. say whether he would like the clutch sent to W.W. Hs/Gry.… | ||
| img023 | The investigation of engine cutting out trouble on Kestrel F/S engines at high altitudes and low temperatures. | ||
| View original record | C.c. From Hx/Mrx. C.c. Sg. Mr. C.c. Sw. Jr. C.c. Hy. Cr. C.c. Lp. 23933 No./ARK.1/AL.18. 4. 32. R.A.E. CUTTING OUT OF KESTREL F/S ENGINES AT HIGH ALTITUDES AND LOW TEMPERATURES. (Signed) R.A.E.… | ||
| img024 | Investigation into engine cutting out, focusing on petrol heating and ignition system performance at high altitude. | ||
| View original record | By applying heat to the petrol, a slight improvement was noted. This was done in several ways; by jacketing the petrol filter, by having heated air intakes, and by having the diffuser, and throttle… | ||
| img025 | Analysis of high-altitude engine cut-out issues, comparing Antelope and Fury aircraft configurations and testing solutions. | ||
| View original record | An AVM Antelope with Kestrel I & 103 with a heated elbow on the blower casing, had been going up to 27,000 quite regularly; the temperature reached being in the neighbourhood of -45°C without cutting… | ||
| img026 | Carburettor performance issues regarding fuel mixture, low temperatures, and potential solutions. | ||
| View original record | -2- FW/CRW/LGM. 26.8.29. Cont'd This theory was upheld until it was pointed out that if the diffuser did fill with petrol, the engine would be cut right out due to excessive richness when the machine… | ||
| img027 | Missing Buick gearbox drawing and the dispatch of a Delco Buick damper with design notes. | ||
| View original record | To Dn. From Hs/Rm. Ha/Rm.3/MJ.19.4.32. We are unable to trace what happened to the drawing of the Buick gearbox. The Mailing Dept., here have records which show that it was sent off. I have despatched… | ||
| img028 | Experimental work and solutions for a transmission vibration and rattle complaint. | ||
| View original record | To R. From Hs. R. Da. c. to Gr. for. Rk. c. to PN. SP. 20/25 - TRANSMISSION VIBRATION. Replying to F.1/214.4.32. A considerable amount of experimental work has been done in connection with this… | ||
| img029 | Photograph of the latest Satellite gearbox, which has three synchro-mesh gears. | ||
| View original record | To From Hs/Dm. S. to W. C. to Ry. C. to Wor. Hs/Fm.1/W.26.4.32. X 1779 Enclosed is a photograph of the latest Satellite gearbox, which you will observe has three synchro-mesh gears. Hs/Fm. Attachment. | ||
| img030 | Sectional view and adjustment instructions for a Cadillac/LaSalle 'Triple-silent, Syncro-mesh' transmission. | ||
| View original record | 50 Cadillac 355-B, 370-B, 452-B—LaSalle 345-B [Diagram Labels] Synchronizing Yoke Stop High Speed Synchronizing Yoke Second Speed Synchronizing Yoke Splined Sleeve Back-up light switch Low Speed Gear… | ||
| img031 | Transmission disassembly instructions and a speedometer pinion selection chart. | ||
| View original record | Preliminary Service Information 51 moved equal distances and should be located in exactly the same position as indicated by the graduation marks. Adjust the travel of the front yoke by moving the… | ||
| img032 | Experimental items for the electrical system of the 19-EX, including a voltage-regulated dynamo, universal battery, and starter motor. | ||
| View original record | To R. from Hs/Wst. c. SG. c. WOR. E. c. Ev. R. Hs/Wst.6/AD20.4.32. EXPERIMENTAL ITEMS ON ELECTRICAL SYSTEM OF 19-EX. Voltage Regulated Dynamo. We have converted one of our standard 40/50 dynamos to a… | ||
| img033 | Tests and modifications to a starter motor, switch, horn, instruments, and windscreen wiper. | ||
| View original record | -2- This motor has maintained its lubrication during severe load tests on the bench and has also been frozen in a refrigerator without the motion being sluggish or affected in any way. Starter… | ||
| img034 | Modifications to the handstarter for 'Buzzard' engines to resolve an issue with the worm return spring. | ||
| View original record | To 1. From Ha/Yng. c. to EF. c. to AP. c. to Mr. Jaques. MODIFIED HAND STARTER - SCHEME 1591 - 'BUZZARD' ENGINES. Trouble has been experienced in service with the standard handstarter on Buzzard… | ||
| img035 | Fitting a voltage-controlled dynamo to the 19-FX model for experience gathering. | ||
| View original record | To S. From Hs. C. to SE. C. to Or. E. C. to Dy. De. Hs.1/WJ.22.4.32. X6084 ELECTRICAL SYSTEM - 19-FX. On 19-FX. we have fitted a voltage controlled dynamo. The reason for doing this is because we… | ||
| img036 | Test report and specification list for the 19-EX car following a 10,000 miles post in France. | ||
| View original record | To R. From Hs. c. to Hr. c. to Or.S. c. to EY. Da. 19-EX. CAR FOR 10,000 MILES POST IN FRANCE. This car was tested at Brooklands yesterday by W.H., I.N., Hm., & Hs. There was a high wind, which made… | ||
| img037 | Updates and proposed changes to various vehicle components, including chassis, engine, and electrical systems. | ||
| View original record | -2- Ha.2/WJ.22.4.32. Cont'd. £3.10.0d. per set fitted. The price we paid for the four fasteners on 19-EX. was 6/4d. per set. It is not proposed to standardise these fasteners, the object is to gain… | ||
| img038 | Customer demand for, and testing of, permanent jacks for installation on cars. | ||
| View original record | -3- Hm.2/AL.22.4.32. Cont'd. Jacks. This car is fitted with permanent D.W.S. jacks. We have an insistent demand from customers which is becoming more and more definite, that they require something… | ||
| img039 | The initial tests and modifications of a new semi-expanding carburetter, detailing performance, power output, and restarting issues. | ||
| View original record | To R. From Hs/Lov. c. to EG. For. c. to RG. Do. c. to Ry. Hs/Lov.S/HJ.25.4.32. X7080 R.R. SEMI EXPANDING CARBURETTER. We have now had the first tests on a chassis with the new semi-expanding… | ||
| img040 | Carburetter performance, focusing on issues with slow running, mixture control, noise, and building up. | ||
| View original record | -2- to be forced downwards from the holes in the diffuser tube. We did not have a chance to investigate this at the time. It is, however, receiving attention. It was found necessary in order to get a… | ||
| img041 | Test conducted on a Kestrel VIM blower with its inlet guide vanes removed to assess performance impact. | ||
| View original record | ORIGINAL. R. From HS/Alm. c.c. to SJS. c.c. to OY. c.c. to W. c.c. to F. c.c. to SV. c.c. to LF. (KESTREL VIM BLOWER WITH INLET GUIDE VANES REMOVED) We have carried out a test on a .I blower with the… | ||
| img042 | Performance characteristics graph from rig tests of an 'R' supercharger with inlet guide vanes. | ||
| View original record | RIG TESTS OF "R" SUPERCHARGER CHARACTERISTICS WITH INLET GUIDE VANES DATE OF TEST: 8. 4. 32 BAR ["HG]: 29.88 AIR TEMP: 13°C ENGINE R.P.M.: 3200 x 7. Left Y-Axis: PRESSURE ["HG] -5, 0, 5, 10, 15, 20,… | ||
| img043 | Performance graph plotting Horse-Power and Temperature Rise against Mass Flow Rate with vanes removed. | ||
| View original record | ER VANES REMOVED. ROTOR R.P.M. CONDITIONS DIFFUSER .7 = 23900 AIR ONLY STD. 7 1/2 ° TEMP EFFY [AS STANDARD] DELIVERY [AS STANDARD] TEMP RISE [C°] 100° 90° 80° 70° 60° HORSE - POWER 190 180 170 160 150… | ||
| img044 | Technical memorandum comparing the coefficient of friction of an Alfa Romeo clutch to a Rolls-Royce clutch. | ||
| View original record | Da. From Hs/Rm. Hs/Rm.6/MA.25.4.32. ALFA ROMEO CLUTCH. With reference to Da.1/M.21.4.32. We think that the actual coefficient of friction of the R.R. clutch is very different from the apparent… | ||
| img045 | Performance of standard car sparking plugs and the testing of potential replacements. | ||
| View original record | R. From TS/lid. c. to SH. c. to DT. c. to W H. c. to DA. c. to V. SPARKING PLUGS, CARS. ---------------------- Our present standard plugs for cars are :- Full Lodge 'C.3' Type (Mica and Porcelain).… | ||
| img046 | The difficulty of changing into 3rd gear in a gearbox, detailing issues with resistance and cone synchronisation. | ||
| View original record | R. From RM/Dry. c. to S.G. c. to Mr.F. c. to A. c. to JV. ORIGINAL X7310. RM/Gry.13/A. 28.4.32. P.11 of [illegible] The trouble we are having with this gearbox is the difficulty of changing into… | ||
| img047 | Gearbox and gear lever operational issues, including synchronisation problems and sticking cones. | ||
| View original record | -2- EA/Gry. 15/44, 30.4.22. contd. a 500 can angle did not make the first part of the gear lever movement any easier but it became unecessary to crash the gears before the wheels had synchronised. The… | ||
| img048 | Correction regarding the operation of helical gears, dog-clutch cones and jaw clutches. | ||
| View original record | ORIGINAL TO Mr. Platt DA/Am. C. Mr. Day Ex. C. Mr. Hall P.V. C. Mr. Ellor Ex. X17727 DA/Am.6/11.36. A. 53. ================================ Re letter to correct our letter DA/11/ J.S. d 14-6-24. It… | ||
| img049 | Series of experiments concerning piston bedding and cylinder liner distortion on Kestrel engines. | ||
| View original record | 1. From MR/AEC. c. to JS. c. to MR. RM. c. to H. IV. c. to LP. KESTREL CYLINDER. A series of experiments have been carried out with the object of producing properly bedding pistons on Kestrel engines.… | ||
| img050 | Analysis of cylinder liner distortion and buckling based on tests with various crankcase and liner configurations. | ||
| View original record | -2- was found to be one similar to a standard with regard to form and top portion, but with lower panel tapered in to the bottom groove (Fig. 11) the groove being produced in the form of a true… | ||
| img051 | Distortion issues leading to piston seizures and cylinder liner failures. | ||
| View original record | -3- It would also appear that distortion referred to would account for the earlier troubles of coupler failures and piston seizures. At that time the troubles were attributed to too tightly fitting… | ||
| img052 | Comparative blueprint of a standard Kestrel cylinder liner and an improved type with a stiffened skirt. | ||
| View original record | KESTREL CYLINDER LINERS. COMPARATIVE BEDDING OF STANDARD AND IMPROVED TYPE. STANDARD LINER - E.30298. LINER - Ex.7890. WITH STIFFENED SKIRT, AND SEMI-CIRCULAR RUBBER GROOVE | ||
| img053 | Blueprint showing twelve different design proposals for engine cylinder liners. | ||
| View original record | Fig.1: PLAIN LINER, STIFFEST. POSSIBLE SECTION FOR EXISTING CYL-BLOCKS. Fig.2: LINER WITH FLANGE UNDERCUT FOR FLEXIBILITY. Fig.3: LINER WITH REDUCED DIA. FLANGE. Fig.4: LINER WITH RAISED RUBBER… | ||
| img054 | Providing further particulars on B & D shock absorbers. | ||
| View original record | Da. From Hs/Rm. Hs/Rm.3/MA.27. 4. 32. K2048. Herewith further particulars of the B & D shock absorbers which may be of some interest to you. Hs/Rm. | ||
| img055 | Analysis of a C.A.V.-Bosch shunt wound dynamo and regulator. | ||
| View original record | To E. from Hm/Pgt. c.c. Fg. W.R. c.c. Fa. c.c. Sa. W.L. Hs/Sgt.1/ADST.4.32. X4562 X6092 C.A.V.-BOSCH SHUNT WOUND DYNAMO AND REGULATOR. We recently obtained a C.A.V.-Bosch shunt wound dynamo fitted… | ||
| img056 | Performance tests of a machine, detailing its output capabilities and the unsteadiness of the regulator under hot conditions. | ||
| View original record | -2- PERFORMANCE From running tests made on the bench, it was found that the machine was capable of giving an output, under night running conditions, of 13.5 amperes without overheating. This output… | ||
| img057 | The road behaviour and faults found in a new limousine model following a short road test. | ||
| View original record | SECRET. To R. From Hs. c. to Eg. Wor. c. to Ha. c. to Fy. J.S. This car is now fitted up complete with enclosed limousine body, and has been run on the road 2 or 3 miles. The general appearance of the… | ||
| img058 | Continued list of design points needing immediate attention and areas for experimental work. | ||
| View original record | -2- Hs./W1.29.4.32. Cont'd. are :- The immediate points which need design attention (1) Improved slipper wheel. (2) Automatic tappets and modified rocker gear. Experimental work is required on shock… | ||
| img059 | 3rd gear disengagement fault on the 40 HP Ghost chassis gearbox and the successful trial of a modified spline arrangement. | ||
| View original record | R. From RE/GF/. C. to Mr. Wor. C. to Mr. D.H. C. to Mr. Hy. XS310. HS/GP/1/WLC. 5. 5. 22. 40 H.P. GHOST CHASSIS 3RD. GEAR JUMPING OUT OF GEAR. This trouble has occurred on a large proportion of cars… | ||
| img060 | Blueprint diagram illustrating the operation of the 20/25 synchromesh system for top and 3rd gear. | ||
| View original record | 20/25 SYNCHROMESH (1) TOP 3RD DRIVE (2) DRIVE (3) DRIVE IN 3RD DRIVE IN TOP 1. TOP GEAR COMES OUT OF MESH 2. 3RD GEAR COMES OUT OF MESH 3. NEITHER GEAR WORKS OUT TYPES OF TOP AND 3RD GEAR SLIDING… | ||
| img061 | Investigation into cylinder joint failures and high temperatures on evaporatively cooled Kestrel engines. | ||
| View original record | From RB/LAV. C. to Mr. H. C. to Mr. S. L. C. to Mr. S. F. KESTREL ENGINE - CAUSE OF FAILURE OF CYLINDER JOINT RING. ------------------------------------------------------- ALLOY CYLINDER BLOCKS -… | ||
| img062 | Continuation of a report on engine component testing, detailing failures of valves, plates, and joints under various boost and tightening conditions. | ||
| View original record | EA/Cov. & Cyl. Heads. Cont'd. rapidly when a low boost was reached which was also sufficient for failure of the shrunk in steel seat. The relaxed plates were in a different cyl. to the other couplings… | ||
| img063 | Cylinder block construction, discussing deflection, cooling, and joint face issues. | ||
| View original record | L.R. & V.A. T. & S. Cont'd etc. the new piece of cylinder block construction a certain amount of deflection of cranks and inserts must take place during running – particularly so with the light cast… | ||
| img064 | Returned valve and its fitting issues. | ||
| View original record | DEFECTIVE VALVES In view of the valve sent back under our evaporatively cooled conditions, we are arranging to fit a batch of valves as listed, in a new batch of cylinders, in order to retrieve the… | ||
| img065 | Blueprint detailing the placement of thermocouples in a cylinder head joint for an evaporative cooling system test. | ||
| View original record | KES.25 F/SC STD. EVAP. COOLING SYSTEM THERMO COUPLES IN CYLINDER HEAD JOINT. No.3 BORE FOR THE TESTS THE JOINT RING IS IN COPPER WITH COUPLES INSERTED DIRECT INLET COPPER JOINT RING No. 4 BORE No. 3… | ||
| img066 | Graph plotting cylinder head temperatures, BHP, and water temperatures against varying boost pressure at a constant speed. | ||
| View original record | Top Right Corner: 27-4-32 No.1 Top Left Box: KES.25 FULL/S.C. CYLINDER HEAD TEMPS. THERMO COUPLES IN CYL. HEAD JOINT. No.3 CYL. (COPPER RING) STANDARD EVAP COOLING SYSTEM USED. WATER COOLED. D.T.D.… | ||
| img067 | Graph plotting Kestrel engine performance metrics including BHP, temperature, and fuel consumption against boost pressure. | ||
| View original record | KES IZS FULL S/C CYLINDER HEAD TEMPS THERMO COUPLES IN CYL. HD. JOINT RING N°3 CYL. (COPPER RING) STD. EVAP COOLING SYSTEM USED WATER COOLED TEL FUEL A.2. PLUGS CONST SPEED 1900 RPM VARYING BOOST N°3… | ||
| img068 | Internal water leaks in Kestrel engines due to insufficient tightening of holding down nuts. | ||
| View original record | Q. From HS/L.RH. c. to Ag. Wo F. c. to Sq. E. c. to Ly. L. FL. EP. x3866 X1849 KESTREL CYLINDER BLOCKS. USE OF SLIPPING CLUTCH SPANNER FOR TIGHTENING CYLINDER HOLDING DOWN NUTS. We have now had 16… | ||
| img069 | Proposal to use a slipping clutch spanner to ensure correct loading on cylinder joints and improve reliability. | ||
| View original record | -2- Ha/ZPH.4/14.4.32.cont'd. Cylinder troubles being our main weakness, anything that will help to improve the reliability of this assembly deserves careful attention. As the use of a slipping clutch… | ||
| img070 | Design and testing report for a dynamo drive on a Kestrel K.II M.S. 93 engine. | ||
| View original record | To R. from Hs/Yng. c. Sg. c. Wor. c. Rg. E. c. Fv. EP. Hs/Yng.1/AD31.5.32. KESTREL DYNAMO DRIVE - DES.1661 ENGINE K.II M.S. 93. A dynamo drive to the above scheme has been designed to meet the demands… | ||
| img071 | The unreliability of evaporative cooling systems in engines compared to water-cooled systems, detailing faults and proposed modifications. | ||
| View original record | ORIGINAL To R. From Hs. c. to Sg. Wor. c. to RE. E. c. to By. Lr. c. to EP. EVAPORATIVE COOLING. 376 Tests on the bench and tests in the air have proved that an engine running under evaporative… | ||
| img072 | The development challenges and future prospects of evaporatively cooled engines versus water-cooled systems. | ||
| View original record | -2- It must be recognised that to produce a satisfactory evaporatively cooled engine of low weight/HP. and small frontal area which limits the possible water spacing and size of pipes, is a very big… | ||
| img073 | Phantom II synchromesh gearbox issues, focusing on oil friction, torque, and gear engagement difficulties. | ||
| View original record | To R. from Hs/Gry. c. Sg. c. Wor. E. c. Ds. EV. ORIGINAL Hs/Gry.1/AD7.5.32. P.II SYNCHROMESH. K7310. We suggested in our Hs/Gry.13/MA25.4.32 that the resistance met when changing gear on this gear box… | ||
| img074 | Testing plunger springs and alternatives for gear synchronization involving different cam angles and rollers. | ||
| View original record | Hs/Gry.1/AD7.5.32 contd. -2- We therefore tried plunger springs 1 1/2 times the standard strength. With thick oil in the box the cones were unable to synchronise third speed but on using a lower level… | ||
| img075 | Graph showing power losses due to 1st and 2nd motion shafts for a Phantom II Synchromesh system. | ||
| View original record | P.II SYNCHROMESH POWER LOSSES DUE TO 1ST AND 2ND MOTION SHAFTS TORQUE AT A = 96 LBS. INS. REQUIRING 15 LBS. ON LEVER B = 65 LBS. INS. 10 " " TO CHANGE INTO TOP GEAR H.P. R.P.M. COLD OIL OIL AT 40°C NO… | ||
| img076 | Graph showing power losses due to 1st and 2nd motion shafts for the 20/25 Synchromesh gearbox. | ||
| View original record | 20/25 SYNCHROMESH POWER LOSSES DUE TO 1ST AND 2ND MOTION SHAFTS PI OIL AT 40°C H.P. R.P.M. OIL TEMP RISING COLD OIL OIL AT 40° C NO OIL 0 1 2 3 4 5 6 7 8 9 10 0 500 1000 1500 200 | ||
| img077 | Performance and potential modifications of the synchro-mesh gearbox. | ||
| View original record | ORIGINAL To R. From Hs. c. to Sg. Wor. c. to E. Da. c. to By. Hs.5/MJ.7.5.32. X 7310. X 5310. SYNCHRO-MESH GEARBOX. On the 25 HP. the synchro-mesh part works very much better than any other car we… | ||
| img078 | Standardisation sheet detailing alterations for the Kestrel G/1 Plunger Blown Piston. | ||
| View original record | ORIGINAL R. From Hs/LRH. c. to SS. c. to O'R. c. to Rg. c. to Fl. c. to Dy. c. to EP. c. to L. X3996. Hs/LRH.10/HA. 9.5.32. Re: STANDARDISATION SHEET No: KESTREL G/1 PLUNGER BLOWN PISTON 1695. The… | ||
| img079 | Issues with the exhausted boost regulator aneroid and proposing a simplified version sealed at atmospheric pressure. | ||
| View original record | P. From Hs/Pms. c. to Sg. Mor. c. to Rs. R. C. to By. Hs/Pms.10/MA.11.5.32. ORIGINAL X4033 BOOST REGULATOR ANEROID. The boost regulator aneroid, which is exhausted to + 1bs/sq.in., absolute for the… | ||
| img080 | Test bed characteristic curve for a boost regulator with an aneroid sealed at atmospheric pressure, showing performance up to 12,000ft and return. | ||
| View original record | BOOST REGULATOR ANEROID SEALED AT ATMOSPHERIC PRESSURE TEST BED CURVE OF CHARACTERISTICS UP TO 12000FT AND RETURN BOOST PRESSURE LBS [] ALTITUDE IN FEET TAKE OFF GATED RATED BOOST LINE A.H.F. 19.5.32 | ||
| img081 | Sketch showing the layout of a generator drive for supercharge Kestrel engines. | ||
| View original record | SKETCH SHEWING LAYOUT OF GENERATOR DRIVE FOR SUPERCHARGE KESTREL ENGINES, D.E.S 1661., S/R WEB., 6 HOLES, FORGED ALUM., R.H., L.H., S/M., 8 HOLES., .125 GROOVE, 8 - START, R.H. ACME GROOVE,… | ||
| img082 | Strip condition of a flexible drive and the functional testing of its associated electrical equipment. | ||
| View original record | -3- Hs/Yng.l/ADSL.S.32 contd. of a core of several strands of wire bound with two layers of wire which are superimposed and wound in opposite directions. Photograph (c) shows the driven end of the… | ||
| img083 | Conclusions from tests on a dynamo drive, outlining its performance and proposals for future testing on the flexible drive and supercharger clutch. | ||
| View original record | Hs/Yng.1/ADS1.5.32 cont -4- being in open circuit until the cutout closed - the cutout came into operation at 1086 engine R.P.M. CONCLUSIONS. The dynamo drive has stood up to the tests very well and… | ||
| img084 | Photograph showing an engine test rig with a large control panel in a workshop environment. | ||
| View original record | 1796/42 A | ||
| img085 | Close-up photograph of a universal joint and associated drive mechanism. | ||
| View original record | D 9 B | ||
| img086 | Photograph of a threaded and splined shaft assembly, with a handwritten note indicating the direction of rotation. | ||
| View original record | C DIRECTION OF ROTATION | ||
| img087 | Results and conclusions of various piston tests, noting scoring issues and proposing further investigation. | ||
| View original record | -2- HS/Yng.1/ANL2.5.32 contd. to settle this point. No improvement resulted from the modification and the remaining tests were of various piston profiles and clearances. RESULTS. None of the types of… | ||
| img088 | Test report on piston development for the Buzzard evaporatively cooled engine. | ||
| View original record | WORK CARRIED OUT ON PISTON DEVELOPMENT FOR BUZZARD EVAPORATIVELY COOLED TYPE TEST. Test No. | Engine No. | Date of test | Spec'n Ref. | Type of Piston. | Details of piston | Remarks.… | ||
| img089 | The performance of Smith instruments, specifically the speedometer and clock, on the 20/25 chassis. | ||
| View original record | R. From Hs/Wat. c. to Sa. c. to Wor. c. to S. c. to Na. c. to Hy. ORIGINAL Hs/Wat.l/MA.13. 5. 32. SMITH INSTRUMENTS ON R.R. 20/25 CHASSIS. X6135 We have now got these instruments reasonably… | ||
| img090 | The testing and modification of various vehicle instruments including ammeters, petrol meters, and gauges. | ||
| View original record | -2- Ammeter. Smiths recommended us to buy the Lucas moving iron ammeter. As our tests shewed the Lucas ammeter to be sound electrically, this was agreed to especially as Smiths have a commercial… | ||
| img091 | The unsatisfactory lighting and glare from the instrument patch, affecting the driver's ability to read the gauges. | ||
| View original record | -3- Hs/Wst.1/RH.11.5.32.Cont'd. Lighting of the Patch. The lighting of the instrument patch we agree with Mr. Sg. is still unsatisfactory especially in view of the efforts of other makers on cheaper… | ||
| img092 | 2-hour acceptance test for a rebuilt and modified Ricardo sleeve valve engine following failure. | ||
| View original record | ORIGINAL To R. from Hs/Yng. c. to Sg. Wor. c. to Rg. E. c. to Hy. Hs/Yng.1/KT.18.5.32. X4840. RICARDO SLEEVE VALVE ENGINE. REPORT ON 2 HOURS ACCEPTANCE TEST FOR MODIFIED CYLINDER BLOCKS, WATER HEADER… | ||
| img093 | Engine endurance test detailing power output, cylinder detonation, piston and sleeve wear, and jointing material performance. | ||
| View original record | (2) light load, it was opened up to full throttle to check the power, this was 516 c/BHP @ 2250 RPM. Detonation was not observed on this run since the engine was running with open exhausts. On the… | ||
| img094 | Analysis of engine detonation, comparing different cylinder constructions and valve types. | ||
| View original record | (3) is most marked. A characteristic of the detonation marking, common to our poppet valve engines, is also evident, i.e. in the poppet valve types the detonation marking has occurred at the inlet end… | ||
| img095 | Continued note on the effect of sleeve and trapped water circulation on cylinder temperature. | ||
| View original record | (4) Ha/Yng.1/KT.1.5.32.cont'd. of the sleeve, in conjunction with the trapped water circulation in the junk head, raises the general cylinder temperature which to some extent defeats the original… | ||
| img096 | General performance report on an engine unit, detailing horsepower, acceleration, and detonation characteristics. | ||
| View original record | (2) system which has a P.II. rear expansion box. GENERAL PERFORMANCE. This unit has given 110 B.H.P. with no air intake sil-encer, the same carbs with 1.0" chokes, and a two exhaust cam… | ||
| img097 | Sending sketches of a modified brake layout for a J.III car. | ||
| View original record | R. From Ha/Gry. c. to Wor. c. to E. c. to By. c. to Da. c. to Hdy. ORIGINAL X5360. Ha/Gry.1/Ms.31.12.32. BRAKES J.III We are sending you sketches of the brake layout fitted to 1 J.III car. It is not… | ||
| img098 | Tests and proposed modifications to a synchromesh gearbox's 1st gear. | ||
| View original record | R. From Hs/Gry. c. to SG. c. to Sor. c. to E. c. to Da. c. to By. N7310 Hs/Gry.S/MA. 23. 5. 32. P.11 1st GEAR. Tests on the synchromesh gear box have shown that 1st gear works further into mesh under… | ||
| img099 | 6th order vibration characteristics and damping for a 12-cylinder V-engine. | ||
| View original record | a. From Hs/Gry. c. to Sd. c. to W.R. c. to Rg. c. to Ev. X.634. X.4024. Hs/Gry.1/MA.24.5.32. 12 CYLINDER ENGINE. Replying to R.S/11.5.32 concerning the severity of the 6th order vibration for a 60 Vee… | ||
| img100 | Gearbox and sideshaft failure on a 25-EX left hand chassis. | ||
| View original record | ORIGINAL To R. from Hs/Lid. c. to Sg. Wor. c. to E. Da. c. to By. Hs/Lid.2/KT.24.5.32. x 310 P.II. GEARBOX - SIDESHAFT FAILURE. We have experienced a failure in the gearbox on 25-EX (left hand… | ||
| img101 | Photograph showing a damaged 2nd motion shaft gear with a broken bolt and fractured retaining piece. | ||
| View original record | Broken Bolt Gear Retaining Piece Fractures 2nd Motion Shaft. Continuous Gear Teeth Damaged By Contact With Outer Ball Race of Ball Bearing on First Motion Shaft. G7944 S/ZNX | ||
| img102 | Photograph showing a fractured 2nd motion shaft continuous gear and a broken outer ball race from a 1st motion shaft. | ||
| View original record | OUTER BALL RACE (1st MOTION SHAFT) BROKEN BY CONTACT WITH 2nd MOTION SHAFT CONTINUOUS GEAR. 2nd MOTION SHAFT CONTINUOUS GEAR - FRACTURE. | ||
| img103 | Experiments using a modified dash pot to cure servo-brake thumps on the 20/25HP car. | ||
| View original record | R. From Hs/Ltd. c. to Ss. Mor. c. to E. Da. c. to Hy. HS/Ltd.2/HA. 26.5.32. x5360 x5370 20/25HP CAR SERVO-BRAKE THUMPS. On the 20/25HP car it has always been more difficult to cure front brake thumps… | ||
| img104 | The development of a differential valve for the Farnboro' indicator on an 'R' single cylinder unit. | ||
| View original record | To R. from Hs/Yng. c. to Sg. Wor. c. to Rg. E. c. to By. Hs/Yng.2/KT.26.5.32. X4687 REPORT ON THE DEVELOPMENT OF A DIFFERENTIAL VALVE FOR THE FARNBORO' INDICATOR - 'R' SINGLE CYLINDER UNIT. - In order… | ||
| img105 | Tests on a single-cylinder unit's valve, its reliability, and readiness for main engine tests. | ||
| View original record | -2- Ha/Yng.2/KT.26.5.32. R. Single Cylinder Unit. This gives a good idea of the efficient working of the valve. As many as thirteen diagrams have been taken under boosted conditions before it has been… | ||
| img106 | Continued memo discussing modifications to a brake damper to prevent thump and clank noises. | ||
| View original record | -2- HS/Lid.2/MA.26.5.32.Cont'd We feel sure that there will be serious brake thump complaints and that we should anticipate them by a modification similar to what we have tried out. The damper itself… | ||
| img107 | Preliminary test run report on the Peregrine power unit, detailing crankshaft, valve gear, and lubrication observations. | ||
| View original record | ORIGINAL x4027 R. From Ha/Rn. c. Sg. Wor. c. E. Ey. c. Da. Hs/Rn.3/MA.26.5.32. PEREGRINE. We have now had some preliminary runs on this power unit. Crankshaft The crankshaft half speed periods were as… | ||
| img108 | Preliminary power curve tests and engine smoothness, with a postscript on tappet clearance experiments. | ||
| View original record | -2- Hs/Rn.3/MA. 28.5.32. Contd. Power Curve. Attached is the first power curve. We have temporarily rigged up an expanding carburetter on a T pipe. Obviously this curve is of a very preliminary… | ||
| img109 | Wiring arrangement diagram for a RAE MK IV 1000 Watt generator for testing purposes. | ||
| View original record | RAE MK IV 1000 WATT GENERATOR GENERAL ARRANGEMENT OF WIRINGS FOR TEST PURPOSES. VOLT & AMP. METER CUT-OUT RESISTANCE BATTERY AMP METER MOTOR FIELD. REGULATOR MOTOR DYNAMO FIELD. DYNAMO | ||
| img110 | Performance graph for a Peregrine 5.85 C/R engine, showing BHP, BMEP, and Induction Depression against RPM, with a valve timing diagram. | ||
| View original record | PEREGRINE 5.85 C/R. OPEN F SINGLE SU 1 5/8 THROTTLE B.H.P. R.P.M. 1° BEFORE Ex. In. .020 CLCE 46 41 VALVE LIFT .320 B.M.E.P. INDUCTION DEPN. | ||
| img111 | Graph plotting various engine performance curves, including B.M.E.P., induction, and compression pressures. | ||
| View original record | EXHAUST IA S.U. COMPRESSION PRESSURE COMPRESSION PRESSURES BS / ☐" B.M.E.P. INDUCTION DEPN INS. Hg. 130 120 110 100 90 80 70 3 2 1 3500 4000 4500 5000 | ||
| img112 | Blueprint showing a cross-section of a valve and fixed leak piston assembly. | ||
| View original record | VALVE FIXED LEAK PISTON BENTLEY 8 | ||
| img113 | Blueprint diagram of a Draper Shock Damper with component labels. | ||
| View original record | DRAPER SHOCK DAMPER, MAIN BEARING & COVER, BEARING ADJUSTMENT, ECCENTRIC, INTER-LEVER, PISTON, GUIDE-BLOCK, RUBBER GLANDS, MAIN LEVER, RUBBER PACKING IN, CLAMPING SLOT, NOT SHOWN, ECCENTRIC,… | ||