Rolls-Royce Archives
| Identifier | Entry | ||
| img001 | Experiments investigating 25 HP engine flywheel vibration and the effects of balance weights. | ||
| View original record | ORIGINAL To R. From Hs/Gry. c. to Rg. Sor. c. to RE. R. c. to By. Da. 25 HP. FLYWHEEL VIBRATION. As suggested by R. we have carried out experiments on a balanced crankshaft with our optical apparatus… | ||
| img002 | Blueprint of a mechanical component cross-section with dimensional and force annotations. | ||
| View original record | 1/2 lb, 2", 4", 1/2 lb | ||
| img003 | The lubrication of the 3rd motion shaft in a Chrysler spool gear box. | ||
| View original record | ORIGINAL To E. From Hs/Gry c. to Da. Hs/Gry.6/A.1. 12. 31. X2061 We send herewith a sketch of the lubrication of the nose of the 3 rd. motion shaft in the Chrysler spool gear box. This method by the… | ||
| img004 | Blueprint of a Chrysler 1st Motion Shaft with a spherical motion shaft bearing for testing. | ||
| View original record | 3 HOLES EQUALLY SPACED, STOCK GEAR, BRONZE, CHRYSLER 1ST MOTION SHAFT, SPHERICAL (3") MOTION SHAFT BEARING, SPHERICAL TESTS., MAX SPL. LOAD 625 PER STEP | ||
| img005 | Water leak issues with evaporatively cooled 'Kestrel' engines in the 'Southampton Flying Boat'. | ||
| View original record | ORIGINAL To R. From Hs. c. to Sg. Wor. c. to Rg. H. c. to By. Hs.2/WJ.1.12.31. X.4657. X.2444. 'KESTREL' ENGINES EVAPORATIVELY COOLED. The 'Kestrel' engines which are running in the "Southampton… | ||
| img006 | The results of tests on exhaust system losses using a 114° camshaft. | ||
| View original record | To R. FROM Ha/Sn. c. to Eg. ur. c. to S. Da. c. to By. HB/SR.4/HA.2.12.31. X7230. X7090. EXHAUST LOSSES 114° CAMSHAFT. We have now repeated the tests of the exhaust system losses using the 114°… | ||
| img007 | Performance graph comparing manifold only and full exhaust systems on a Phantom II engine. | ||
| View original record | RM. P.40 30/11/31 COMPARISON OF MANIFOLD ONLY. C.O OPEN & FULL EXHAUST SYSTEM P.II COMPLETE SHORT TYPE EXHAUST SYSTEM 1 1/4" CAMSHAFT TO F.B.23448 4.65 C/R STD. CYL HEAD. 1.9" VALVE THROAT MANIFOLD… | ||
| img008 | Performance analysis graph of various short-type exhaust system configurations against engine RPM. | ||
| View original record | ANALYSIS OF EXHAUST SYSTEM SHORT TYPE RM. P.42 30/11/31 P II 448 114° CAMSHAFT TO E.82/1 4.65 C/R STD. CYL. HEAD 1.5" VALVE THROAT R.R. TWIN CARBS. 1.4" DIA. CHOKES. ① MANIFOLD ONLY ② " + FRONT EXP.… | ||
| img009 | The effect of jacket water temperature on detonation in 'Buzzard' engines. | ||
| View original record | To R. From Hs/Yng. c. to Bg. Wor. c. to Rg. E. c. to Dy. c. to Mr. Jaques. Hs./Yng.1/MJ.4.12.31. x3991 x4483 'BUZZARD' ENGINES. THE EFFECT OF JACKET WATER TEMPERATURE ON DETONATION. When the 110º "R"… | ||
| img010 | Comparative power and detonation curve graph for a Buzzard modified supercharged engine at normal and boiling water outlet temperatures. | ||
| View original record | BUZZARD MOD. SUPERCHARGED ENGINES CURVE 71H COMPARATIVE POWER AND DETONATION CURVES WITH WATER OUTLET TEMPS. NORMAL AND BOILING ENGINE 'H' MS-3 WITH CAMSHAFTS C35035 TIMED 1C 50 &80C MAGS 38/40 BTDC… | ||
| img011 | The development and testing of a water level indicator for an aircraft engine header tank. | ||
| View original record | To R. from Hs/Cib. C. EG. MOR. C. EG. S. C. EV. L. EVAPORATIVE COOLING. X4520 WATER LEVEL INDICATOR FOR HEADER TANK. A device has been developed in conjunction with evaporative cooling to be fitted to… | ||
| img012 | Specifications and testing details for a tank warning level device, including ejector pipe and bottle particulars. | ||
| View original record | -2- He/Gib.1/ADM.12.31 contd. (3) The position of the end of the ejector pipe in the mouth of the tank outlet pipe. (4) The bottle containing the bi-metal contact thermo should not be enclosed but… | ||
| img013 | Blueprint detailing the leading particulars of a water level indicator for aircraft cooling systems. | ||
| View original record | LEADING PARTICULARS OF WATER LEVEL INDICATOR. THE GENERAL APPLICATION OF THIS DEVICE WAS FULLY DEALT WITH IN L.R.S. MEMO LRI/AD/14 11-10-31. WATER LOSS INDICATORS ON COOLING SYSTEMS IN AIRCRAFT.… | ||
| img014 | Correspondence concerning a sample Polarised Moving Iron Ammeter from the Weston Electrical Instrument Co. | ||
| View original record | To R. from Hs/wst. C. Sg. WOR. ORIGINAL Hs/wst.1/AD6.12.31. X6132 POLARISED MOVING IRON AMMETER. We have approached the Weston Electrical Instrument Co. and they are forwarding to us a sample… | ||
| img015 | Test report on 1st and 2nd gears with removed overhanging bosses for a PII Synchromesh gearbox. | ||
| View original record | DA FROM Hs/Gry. ORIGINAL Hs/Gry.6/MA.7.12.31. X7310. PII SYNCHROMESH. As requested in DAL/M31.10.31. we have tried out a set of 1st and 2nd gears with the overhanging bosses removed as shown on Hs.460… | ||
| img016 | Blueprint of a machined part with dimensional annotations and modification notes. | ||
| View original record | ROLLS-ROYCE LTD. PRINT ROOM 2 DEC 31 1.800 .900 .200 Boss REMOVED .150 Boss REMOVED 1.025 1.925 MODIFICATIONS TO 67664/2/3 HS 460 | ||
| img017 | Test drive report and description of the Denison-Burney Streamline Car. | ||
| View original record | R. From Hs. c. to Wg. Wor. c. to Da. Hy. c. to K. HS.1/MA.7.12.31. ORIGINAL DENISON-BURNEY'S STREAMLINE CAR. X3531 FN. and myself tried one of these cars last Friday. We went from London to Maidenhead… | ||
| img018 | Review of a competitor's car design, focusing on its features, performance, and business potential. | ||
| View original record | (3) One of the troubles they have had is with the cool-ing and on the later cars they have a conventional radia-tor at the front of the car besides the radiators at the rear. The radiator in front… | ||
| img019 | Summary of two tests conducted on the Development Hawk 114° camshaft regarding exhaust duration and valve lift. | ||
| View original record | R. FROM HR/sn. c. to Mr. H.F. c. to Mr. Ds. c. to Hy. HR/sn.2/HA.7.12.31. X7010 DEVELOPMENT HAWK 114° CAMSHAFT. We carried out two tests on this camshaft. (1) M.P.37. This test was to determine… | ||
| img020 | Performance comparison graph of a 114° camshaft versus a two-inlet-cam camshaft setup, showing BHP and BMEP against RPM. | ||
| View original record | RM. P.37 27/11/31 DIRECT COMPARISON OF 114° CAMSHAFT WITH TWO INLET CAMS AND CAMSHAFT TO LE C 2918 E 82448 TWIN CARBS. 1.4 CHOKES. OPEN EX MAN. ONLY. HIGH LIFT ROCKERS C/R 4.65-1 A B NORMAL To LEC2918… | ||
| img021 | Performance graph comparing high and low lift rockers on the 114° camshaft E 82448. | ||
| View original record | RM. P.38 28/11/31 COMPARISON OF HIGH AND LOW LIFT ROCKERS ON THE 114° CAMSHAFT E 82448 TWIN CHOKE CARBS 1·4 CHOKES OPEN EX. MANIFOLD ONLY C/R 4·65-1 STD. CYL HEAD AND VALVES 1·9 VALVE THROAT I.H.P.… | ||
| img022 | Test drive and evaluation of Sir Denistoun Burney's car, comparing its performance and lack of engine noise to other models. | ||
| View original record | ORIGINAL To R. From Hs. c. to Sg. Wor. c. to E. Da. c. to By. Hs.3/W.7.12.31. Y3531 SIR DENISTOUN-BURNEY'S CAR. Since writing the last report, Sir Denistoun Burney has visited Derby and brought with… | ||
| img023 | Modifications and tests to overcome water flow reversals in the 'Kestrel' 25 engine's water system. | ||
| View original record | To R. From Hs/Fkn. c. to Sg. Wor. c. to Rg. c. to Ly. L. ORIGINAL Hs/Fkn.1/MJ.8.12.31. x2965 x3866 REVERSALS OF WATER FLOW ON 'KESTREL' 25 WITH TWO-PIECE CYLINDERS. It was found necessary to modify… | ||
| img024 | Results of tests investigating the reversal of water flow in an engine under three different configurations. | ||
| View original record | RESULTS OF TESTS. These tests were carried out as follows :- (1) With standard horn pipes and top water rails, a very violent reversal of flow occurred at 1600 R.P.M. (2) With 13/16" dia. restriction… | ||
| img025 | Tests carried out on a higher compression cylinder head, comparing twin choke and single expanding carburetors. | ||
| View original record | R. From Hs/sn. C. to Sg. Rr. C. to S. Ds. ORIGINAL TM/sn.7/MA.9.12.31. x7050 x7080 HIGHER COMPRESSION HEAD 40/50. No. f2456 We have carried out tests on a Cyl Head piece a drawing of which we attach.… | ||
| img026 | Visit to Martlesham investigating engine 'cutting out' issues on a Hawker Fury aircraft at high altitude. | ||
| View original record | To R. From Hs/Lov. c. to Sg. Wor. c. to Rg. E. c. to By. EP. c. to Lr. c. to Mr. Jaques (A.I.D.) K1908 Hawker's VISIT TO MARTLESHAM - 'CUTTING OUT' TROUBLE ON 'FURY'. Yesterday I went to Martlesham… | ||
| img027 | High-altitude engine performance issues, including fuel distribution and freezing, with proposed solutions. | ||
| View original record | -2- Hs/Lov.1/MJ.9.12.31.Cont'd. port side cylinders and any attempt to reduce this with the A/C. results in a "cut out". The starboard cylinders remain quite normal. This is quite in agreement with… | ||
| img028 | Ongoing tests on induction pipes to solve issues of bad distribution and diffuser freezing at low temperatures. | ||
| View original record | (3) HS/Lov.1/MT.9.12.31. Cont'd. object in view we are perservering with induction pipe tests on the engine and blower rig and shall endeavour to get an improved pipe before the winter weather ceases… | ||
| img029 | The rating and preliminary development tests for the 1000 HP Buzzard engine. | ||
| View original record | R. From Hs/WG. c. to Sg. Mer. c. to R. H. c. to RY. x4674 x4453 RATING OF THE 1000 HP 'BUZZARD'. It is our intentions to build a Buzzard engine to develop a 1000 HP utilising the knowledge which we… | ||
| img030 | Engine test results and recommendations concerning detonation at various speeds and loads. | ||
| View original record | -2- Engine. R.P.M. Det.Pt. C/BHP. Boost. "Hg. Abs. C.R. ---------------------------------------------------------------------------------------- Std. Buzzard. 2000 'Y' 6 ft. 830 32.5 5.5/1 R.25 2000… | ||
| img031 | Power curve graph for an 'R' Mod Supercharged Engine at full throttle between 1800 and 2400 R.P.M. | ||
| View original record | 'R' MOD SUPERCHARGED ENGINES CURVE 101 R POWER CURVE AT FULL THROTTLE 1800 - 2400 R.P.M. ENGINE:- R.MS. 2B WITH 9/1 C.R. PISTONS & S.S% GEARS CAMSHAFT:- E 38035 VALVES TIMED T.C. 50° A.B.D.C.… | ||
| img032 | Graph of detonation intensity at varying speeds for 'R' Mod supercharged engines. | ||
| View original record | "R" MOD SUPERCHARGED ENGINES CURVE 102 'R' DETONATION INTENSITY AT VARYING SPEEDS WITH ENGINE DEVELOPING 1000 B.H.P. & ALSO AT CORRESP.G TAKE-OFF POWERS AND SPEEDS ENGINE: R MS 25 WITH 6/1 CR PISTONS… | ||
| img033 | The condition of an engine stripped after a 25,000-mile test run on Aero Shell oil. | ||
| View original record | ORIGINAL To R. from Hm/Rm. c. SG. c. WOT. c. GM. HV. He/Rm.1/ADJ.12.31. X7941. X544. 25-EX - 10,000 MILES. The following were the main points in connection with the strip of the above car at the… | ||
| img034 | Chassis condition report detailing wear and issues on components like axles, brakes, and clutch. | ||
| View original record | -2- CHASSIS. FRONT AXLE AND BRAKES. Pivot pins in fairly good condition. Actuating shafts dry due to Bijur drips having failed, drip plugs Brake drums - Worn .040 on the diameter. Cross steering tube… | ||
| img035 | The condition of road springs and hydraulic shock dampers. | ||
| View original record | -3- ROAD SPRINGS Front Road Springs - These were excellently lubricated except for the rear of the right-hand spring which was rather short of oil. There was no appreciable wear on the shackle pins.… | ||
| img036 | Summary of issues regarding brake wear, drip plugs, and crankshaft bearings, along with proposed improvements. | ||
| View original record | Ha/BM.1/ADD.12.31 contd. -4- SUMMARY The worst fea ture on the car was the brake wear. We hope to cure this trouble by getting heat away more readily with the ribbed brake drums which have already… | ||
| img037 | Cylinder bore wear measurements for a 25 EX engine after mileage on Shell oil. | ||
| View original record | 25 EX ENGINE BORES OF CYLINDERS AFTER 30000 MILES ON Shell Oil [Struck-out text: 34,000 ON SHELL OIL] TABLE DATA: BORE N° | MEASURED AT | DIAMETER | WEAR 1 | CROWN | 4.2522 | .0022 1 | CENTRE | 4.253… | ||
| img038 | Investigation into the method of regulation for an engine-driven aero generator with a Mark II regulator. | ||
| View original record | To R. from Hs/Wst. c.c. Sg. Hcr. c.c. E. Ry. c.c. Rc. LD. Lr. ORIGINAL. He/wst.4/AD9.12.31. X6130. ENGINE DRIVEN AERO GENERATOR WITH MARK II REGULATOR. We have now investigated the method of… | ||
| img039 | Description of the regulator's function in limiting charging current to the accumulator. | ||
| View original record | -2- charging current flowing in the regulator field winding. The effect then is to limit the charging current to a small value, as any tendency for it to rise results in an increased back E.M.F. in… | ||
| img040 | Fuel distribution tests on vertical carburettors and induction systems. | ||
| View original record | R. From Ha/Ma. C. to BG. MrT. C. to S. Da. C. to Ey. ORIGINAL X1487 Y5080 DISTRIBUTION. VERTICAL CARB. J.I. In curve No.51, we shewed that, except at full throttle speeds below 1000 RPM, the induction… | ||
| img041 | Performance graph comparing two vertical S.U. carburettor setups based on air valve orientation. | ||
| View original record | COMPARISON OF DISTRIBUTION VERTICAL S U 112° CAMSHAFT WITH TWO INLET CAMS. HIGH LIFT ROCKERS OPEN EXHAUST INLET VALVE DIA. 1/4 WITH MIN HEAD CLEARANCE OF .225 ROUND VALVE. VERTICAL CARB. 1 7/8… | ||
| img042 | Power curves and performance tests for engines with higher compression pistons and different exhaust systems. | ||
| View original record | R. From Ha/mn. c. to EG. mor. c. to E. Ba. c. to Hy. x5771. x5090. POWER OUTPUT INCE VAN STEEL. We have now had power curves off three further engines fitted with the higher compression pistons and… | ||
| img043 | Performance graph showing power output for a CXII high-lift unit with varying manifold and exhaust configurations. | ||
| View original record | RM 33 UNIT FITTED TO 20 G I CHINA POWER OUTPUT CXII UNIT HIGH LIFT CAMSHAFT E 57177 (110 S°) 5.76 C/R. ① CUT OUT OPEN INSIDE DIA ② SMALL MANIFOLD (1.6 DOWNTAKE) FRONT EXP. BOX. PII SILENCER 1.5"… | ||
| img044 | Power output chart for a C18 unit with camshaft E57177, showing performance with a larger carburetter under various exhaust configurations. | ||
| View original record | POWER OUTPUT C18 UNIT CHINA CAMSHAFT E 57177 (110.5°) C/R 5.74 STANDARD 15% LARGER R.R. CARBURETTER LEGEND: ① OPEN EXHAUST ② C.O. OPEN ③ COMPLETE EXHAUST SYSTEM & DOWNTAKE VALVE TIMING DIAGRAM: Ex In… | ||
| img045 | Power output performance graph for a CTR Unit China RM 55 engine. | ||
| View original record | POWER OUTPUT C.TR. UNIT CHINA R.M. 55 CAMSHAFT E.57177 (110.5°) C/R 5.74 STANDARD 1 5/8" LARGER R.R. CARBURETTER ① COMPLETE EXHAUST SYSTEM T.G. PIPES PT. SHORT ② SILENCER. SMALL FRONT EXPANSION BOX.… | ||
| img046 | Blueprint graph showing engine power output curves for a C10 unit for a 19.G.IV engine. | ||
| View original record | R.M. 57 POWER OUTPUT C 10 UNIT FOR 19 G IV ① CAMSHAFT E.57177 110 S° PITSONS E.57122 COMPRESSION RATIO 5.7 - 1 1.5 DIA 1 1/8 INSIDE DIA P II SHAFT TYPE CAMSHAFT/VALVE TIMING DIAGRAM: 26° .020 CLOSE Ex… | ||
| img047 | Series of tests to eliminate induction pipe power roar. | ||
| View original record | ORIGINAL To R. from Hs/Rm. c. to Sg. c. to P. c. to By. Hs/Rm.1/WJ. 12.12.31. x7070. x7080. INDUCTION PIPE POWER ROAR. We have now completed a series of tests on the elimination of this phenomenon.… | ||
| img048 | Induction pipe arrangement and carburettor trials with associated blueprint sketches. | ||
| View original record | -2- He/Em.1/WJ.12.12.31.Cont'd. Sketch (1). INTAKE SILENCER SCHEME FOR RAMMING TWIN CARBS. INDUCTION PIPE ARRANGEMENT. We tried three entirely separate types of carburetter on three cyl. ramming pipes… | ||
| img049 | Report page detailing experiments and blueprints for modifying induction pipes and carburettors to reduce engine roar. | ||
| View original record | -3- Ha/Rm.1/WJ.12.12.31.Cont'd. (Sketch (3)) [Blueprint Sketch 3 Text] 2.450 1.750 .500 DIA 1.875 1.875 BORE TWO 1.875 THROTTLE S.U'S PIPE. NON RAMMING. ③ [Typed Text] The induction pipes were then… | ||
| img050 | Test report on carburettor and induction pipe configurations, including a blueprint for a single S.U. induction pipe. | ||
| View original record | -4- A further test with this balance piece was then carried out joining the two halves of the induction pipe by means of a pipe 1.25" dia. This resulted in a further 60% reduction in the roar which in… | ||
| img051 | Carburettor, induction pipe, and silencer performance tests, including a blueprint diagram for a silencer. | ||
| View original record | -5- Ha/Rm.1/WL.12.12.31 Cont'd. power. On the road the single S.U. behaves exceedingly well It will slow run at 180 R.P.M. with 5.25 c/r and will accelerate without hesitation throughout the whole… | ||
| img052 | Photograph of an engine bay, focusing on the engine and its components. | ||
| View original record | 1. | ||
| img053 | Photograph of an engine bay showing twin carburettors with large circular air cleaners. | ||
| View original record | 3. | ||
| img054 | Photograph of a car engine bay, viewed from the side. | ||
| View original record | 5. | ||
| img055 | Performance graph showing the effect of induction pipe diameter on a twin carburetor engine. | ||
| View original record | RM P.36 27/11/31 EFFECT OF PIPE DIA ON TWIN CARB. 114° CAMSHAFT T-H-O INLET CAMS HIGH LIFT ROCKERS OPEN EXHAUST COMP. RATIO 4·65:1 1·3" CHOKES INDUCTION PIPE DIA 1·875 1·550 Valve Timing Diagram:… | ||
| img056 | Performance graph comparing different carburetter and induction pipe layouts. | ||
| View original record | R.M. D45 COMPARISON OF CARBURETTERS AND INDUCTION PIPE LAY-OUTS P1 114° CAMSHAFT E.62448 MANIFOLD ONLY STD. VALVES 1.9 INLET THROATS 5.22 C/R ① STANDARD R.R CARB ② R.R TWIN CARB BALANCED ABOVE CHOKES… | ||
| img057 | Flexo Mono carburetters being ready for road use on a 16-G-IV model, with an attached power curve from testing on a Japan I unit. | ||
| View original record | To R. From Hs/Rm c. to Sg. Mor. c. to E. Da. c. to By. ORIGINAL x5080. x5771. TO FLEXO.MONO.CARBURETTERS TO Lst.2224 We have now got these carburetters to a condition where they are ready for the… | ||
| img058 | Power output graph for a 'Japan Unit' engine with specified carburettor, camshaft, and valve modifications. | ||
| View original record | RM. 58 POWER OUTPUT WITH R.R. CARBS TO LEC 2924 JAPAN UNIT. 112° SHAFT. INLET & EXHAUST CAMS TO E.55358 HIGH LIFT ROCKERS OPEN EXHAUST INLET VALVE DIA 1.4 MACHINED TO GIVE MIN CLCE .225 ROUND VALVE… | ||
| img059 | Performance and design of shock absorbers mounted outside the frame. | ||
| View original record | To Ds. from Hs/Rm. Hs/Rm.2/AD14.12.31. x7520. P.II. SHOCK ABSORBERS OUTSIDE THE FRAME. With reference to your note De3/M11.12.31. The model we are running at Derby with dampers outside the frame is… | ||
| img060 | Requesting the replacement of a print due to an error in its title. | ||
| View original record | To R. From Hs/Rs. c. to AG. Wor. c. to E. Dn. c. to RY. ORIGINAL Hs/Rs.3/MA.14.12.31. X5080. X5771. DISTRIBUTION AND NUMBER AUDIT L.I. Will you please replace print No. Rn.31 attached to memo… | ||
| img061 | Blueprint graph showing engine power output and performance characteristics against RPM. | ||
| View original record | POWER OUTPUT JAPAN UNIT C/R 5.65-1 RM. 51 112° CAMSHAFT INLET & EX. CAMS TO E.55358 HIGH LIFT ROCKERS. OPEN EXHAUST INLET VALVE DIA 1·4 MIN CLCE ROUND INLET VALVE ·225 1 7/8 S.U. ① CLAUDEL ② MIXTURE… | ||
| img062 | Why Delco hydraulic shock dampers operate without a filter. | ||
| View original record | To Da. from Hs/Rm. Hs/Rm. 3/AD4.12.31. X235 HYDRAULIC SHOCK DAMPERS. With reference to Da2/Mll.12.31. we consider that the reason why Delcos could do without a filter was because they had no small air… | ||
| img063 | Suggestion to redesign the battery ignition distributor head using moulded bakelite components. | ||
| View original record | To E. From Hs/Wst. ORIGINAL Hs/Wst.6/KT.14.12.31. Y6118 BATTERY IGNITION DISTRIBUTOR. In redesigning this distributor head we suggest that the threads in the terminal bosses be all of moulded… | ||
| img064 | Technical memorandum detailing three issues with the 25 HP Synchromesh gearbox. | ||
| View original record | To R. from Hs/Gry. c. to SE. Wor. c. to E. Ds. c. to Hy. 25 HP. SYNCHROMESH. We have had, in addition to reverse gear coming out, three troubles with this gearbox :- (1) Noise both idling and running… | ||
| img065 | Gearbox performance, detailing issues with gear noise, 3rd gear engagement, and top gear disengagement. | ||
| View original record | (2) We copper deposited a set of gears to examine the bedding after some hard use and found the bedding to be good. This set of gears in whatever box, has always been the best. We have also made sets… | ||
| img066 | Issues with the battery ignition lever flinging and bouncing at high engine speeds, with reference to a Lucas redesign. | ||
| View original record | ORIGINAL. To E. from Hs/Wst. Hs/Wst.1/AD.16.12.31. X6095 J.3. BATTERY IGNITION. We have had a suspicion for some time now that at the very high speeds at which we are running engines, the battery… | ||
| img067 | Preliminary calculations for a 4 1/4 inch diameter J.3. starter motor (Semience). | ||
| View original record | To R. E. From Hs/Wst. ORIGINAL Hs/Wst.3/MA.17.12.31. J.3. STARTER MOTOR (SEMIENCE) X5620 We give below preliminary calculations for this 4 1/4" dia. motor which are being tried out by W. to see if the… | ||
| img068 | 100-hour engine test report on leaded Anglo Persian Spirit fuel to observe its effects on engine condition. | ||
| View original record | ORIGINAL To R. from Hs/Yng. c. to J.S. c. to Re. c. to By. X2765. X12821. Hs/Yng.2/KT.18.12.31. ANGLO PERSIAN SPIRIT + 3¾ ccs TEL/gal. We intend to run a 100 hours test on a leaded fuel in order to… | ||
| img069 | Performance comparison between Anglo Persian fuel and D.T.D.134 fuel, covering detonation, power, and consumption. | ||
| View original record | -2- (1) At the rated boost the power difference between the Anglo Persian fuel and D.T.D.134 is negligible. (2) That at 2000 r.p.m. the initial detonation point of the Anglo Persian fuel is at + 3"… | ||
| img070 | Comparative power curves at constant speed and varying boost for a Kestrel supercharged engine. | ||
| View original record | KESTREL SUPERCHARGED ENGINES CURVE 266 F COMPARATIVE POWER CURVES AT CONSTANT SPEED AND VARYING BOOST ENGINE - K.MS-27 WITH 6/1 C.R. PISTONS 2600 R.P.M. FUELS - D.T.D. 134 AND ANGLO-PERSIAN 3½ c.c… | ||
| img071 | Comparative power curves at constant speed and varying boost for Kestrel supercharged engines. | ||
| View original record | KESTREL SUPERCHARGED ENGINES, CURVE 287 F, COMPARATIVE POWER CURVES AT CONSTANT SPEED, AND VARYING BOOST, FUELS - DTD 134 + 3ccs TEL/GALL AND ANGLO-PERSIAN + 3ccs, ENGINE K-IIS-27 WITH 5/1 G.R.… | ||
| img072 | Comparative power curves for a Kestrel K II-27 supercharged engine at rated boost, comparing two different fuels. | ||
| View original record | KESTREL SUPERCHARGED ENGINES CURVE 268 F COMPARATIVE POWER CURVES AT RATED BOOST OF 28.92 HG ABS - 2700 TO 1800 R.P.M. ENGINE K II-27 WITH 6/1 C.R. PISTONS FUELS A. D.T.D. 134 (75/25 AVIATN/BENZ) B.… | ||
| img073 | Graph showing a consumption loop at rated boost for a Kestrel supercharged engine. | ||
| View original record | KESTREL" SUPERCHARGED ENGINES CURVE 269'F' CONSUMPTION LOOP AT RATED BOOST (2250 R.P.M.) ENGINE - K-IIS-27 WITH 6/1 C.R PISTONS + 28-82' HG ABS FUELS - I D.T.D. 134 (75/25 AVIATN/BENZOLE) II… | ||
| img074 | The gear and brake lever positions on a 20.G.IV chassis. | ||
| View original record | from Hs/Lid. Hs/Lic.6/KT.18.12.31. x8995 x8995 Hs/Lid GEAR & BRAKE LEVER POSITION ON 20.G.IV. The gear lever and brake lever positions on 20.G.IV. were made to .sch.3328; we have not seen any… | ||
| img075 | The condition of an 18-GIV engine unit after a 10,000-mile test. | ||
| View original record | ORIGINAL To R. from Hs/Fm. c. Sg. c. AOF. c. Dea. B. Hs/Rm.1/AD21.12.31. X5770 X5840 STRIP OF 18-GIV AFTER 10,000 MILE TEST. ENGINE UNIT. Oil. - This unit has been run on Castrol XL oil. The most… | ||
| img076 | The condition and performance of various chassis components. | ||
| View original record | -2- Flywheel and Clutch. - The automatic clutch spigot lubrication caused trouble as it was found to be erratic in behaviour. We have temporarily reverted to the original scheme whilst we find out how… | ||
| img077 | Inspection report detailing the condition of the rear axle, propeller shaft, pedals, and gearbox. | ||
| View original record | -3- Hs/Rm.1/ADZ1.12.31 contd. Rear Axle - Condition good except for shortage of oil on the brake actuating shafts. We found on investigation that the oil was running back along the small pipes which… | ||
| img078 | Table of measurements for cylinder bore diameter and wear after 16,000 miles. | ||
| View original record | CX - 19 GTV 17-12-31 BORES OF CYLINDERS AFTER 16000 MILES BORE N° | MEASURED AT | DIAMETER | WEAR 1 | CROWN | 3.2515 | .0015 1 | CENTRE | 3.2515 | .0015 1 | MOUTH | 3.251 | .001 2 | CROWN | 3.2513 |… | ||
| img079 | Photograph showing sets of engine bearing shells arranged in two rows for inspection. | ||
| View original record | ", | ||
| img080 | Proposed modifications to improve the performance of the Continental Phantom II. | ||
| View original record | To Sg. From Hs. c. to Wor. E. c. to By. Hs.1/WJ.22.12.31. X7120 IMPROVED CONTINENTAL PHANTOM II. The improved performance of the 25 HP. as on 2J-G4, and the further improvements which we think can… | ||
| img081 | List of proposed modifications to retain reliability and develop a fast Continental sports car. | ||
| View original record | -2- The following is a list of modification which we think are desirable in order to retain reliability :- (1) Modified crankshaft with the larger journals. This can be obtained from existing… | ||
| img082 | The development and testing of R.R. Twin, Two Single, and Single carburetters. | ||
| View original record | -3- this carburetter on the Napier. The S.U. is used on all high class British cars. The position of the Rolls-Royce carburetters are as follows :- R.R. Twin Carburetters. We have been working… | ||
| img083 | Carburetter development options and timelines for the improved Phantom II Continental car. | ||
| View original record | -4- based on these results was first on test. We have since gone off the twin carburetter and suggested a single. We have now gone off the single and require two separate carburetters. We believe… | ||
| img084 | Potential improvements to the power output of the 25 HP engine unit fitted to 20-G-4. | ||
| View original record | H. From Hs/Rn. C. to SG. Mr. C. to R. By. C. to DA. Ha/EAL/MA. 22.12.31. X5120. X5771. FURTHER IMPROVEMENT IN POWER OUTPUT 20-G-4. We have been considering means of improving the power output of the… | ||
| img085 | Analysis of vehicle performance increases from various modifications, comparing against previous results at Brooklands. | ||
| View original record | -2- Ha/BM/M.22.12.31. cont'd At 70 M.P.H. Carb. 8 B.H.P. Comp Ratio. 4 B.H.P. Cut Out. 7 B.H.P. --- 19 B.H.P. on 70 B.H.P. or 27% increase. At 80 M.P.H. Carb. 11 B.H.P. Comp Ratio. 4 B.H.P. Cut Out. 7… | ||
| img086 | Performance graph comparing standard, 50% larger, and 100% larger chokes on a China CIS unit. | ||
| View original record | R.M. 61 COMPARISON OF STANDARD 50% LARGER AND 100% LARGER CHOKES. CHINA CIS UNIT ALL TESTS C.O. OPEN 20G & 1S. EXHAUST SYSTEM C/R 874 CAMSHAFT E.57177 110.5° 22/12/31 Ex IN 6 .020 CLCE 40.5 44 CARB AS… | ||
| img087 | Comparing the performance of silent gearboxes from several competitor cars. | ||
| View original record | To R. from Hs/Gry. c. SG. for. c. F. Da. c. By. ORIGINAL Hs/Gry.6/KT.22.12.31. K2061. SILENT GEARBOXES. We have just had an opportunity to test several cars with a constant mesh indirect gear. The… | ||
| img088 | Noise improvements and experiments for the 25 HP Synchromesh Gearbox. | ||
| View original record | To R. from Hs/Gry. c. to G. Wr. c. to E. Ds. c. to Hy. HRC. Y5310. 25 HP. SYNCHROMESH GEARBOX. Noise. We have effected an improvement in the idling noise of our gearboxes in two recent experiments. We… | ||
| img089 | Difficulty with brake ropes fouling the cross member on diamond engine mounted cars. | ||
| View original record | ORIGINAL. Da. from Hs/Rm. Hs/Rm.1/AD30.12.31. K7005 85005 There is a difficulty which has arisen on diamond engine mounted cars. The brake ropes foul the big cross member in the normal running… | ||
| img090 | Fouling of brake ropes on a cross member in a 25 HP vehicle. | ||
| View original record | 25 HP. brake ropes foul cross member appreciably in the normal riding position and start pulling the brakes on in the maximum bump position. Countershaft A has been raised to avoid fouling the… | ||
| img091 | Tests and proposed improvements for internal support for side spare wheel carriers. | ||
| View original record | ORIGINAL From Hs/Les. To R. DA/EV. Hs/Les.3/MA.30.13.31. X/600 x5b00 INTERNAL SUPPORT FOR SIDE SPARE WHEEL CARRIERS. 25 HP. N.S.3358 effected a large reduction of the movement of the side spare wheels… | ||
| img092 | Deflection tests for a bumper chassis, detailing reductions in frame movement and the importance of a rigid dash attachment. | ||
| View original record | -2- On the bumper chassis we have taken deflection tests and have reduced the frame movement by 60% by using Fig.II. The external connection between the dash and the frame reduces the frame movement… | ||
| img093 | Blueprint of a test apparatus for a 25 HP side spare wheel bracket. | ||
| View original record | TEST APPARATUS FOR SIDE SPARE WHEEL BRACKET 25. H.P Fig. 1 | ||
| img094 | Blueprint diagram illustrating the clutch pedal assembly and linkage. | ||
| View original record | CLUTCH PEDAL FIG 1 P2 Y | ||
| img095 | Oil consumption issues in Kestrel engines related to cylinder liner construction and distortion. | ||
| View original record | ORIGINAL To-R. from Hs/Yng. cc to Mr. Ever. c. to Mr. H. c. to Mr. Hs/Yng.7/KT.30.12.31. X3866 X2965 CYLINDER LINER CONSTRUCTION & OIL CONSUMPTION - KESTREL ENGINES - We have considered for some time… | ||
| img096 | Blueprint diagram comparing two arrangements of cylinder liners for a Kestrel engine. | ||
| View original record | FIG. I ARRANGEMENT OF CYLINDER LINER (STDº KESTREL ENG) RUBBER PACKING RING STANDARD LINER SHOWS HARD BEDDING MARKS OVER THIS PORTION LINER LOCATED ON CRANKCASE FIG. II GAS JOINT RING WATER JOINT RING… | ||
| img097 | Calculations on the Peregrine crankshaft's critical speed and inertia using Carter's formula. | ||
| View original record | To E. From Hs/Gry. ORIGINAL Hs/Gry.9/KT.30.12.31. PEREGRINE CRANKSHAFT. (K4027) We have done some calculations by Carter's formula on this crankshaft to see up to what speed we shall be able to run.… | ||
| img098 | Detonation tests carried out on detachable head cylinders for the Kestrel engine. | ||
| View original record | To R. from Hs/Yng. c. to Secr. c. to Rg. E. c. to By. ORIGINAL DETACHABLE HEAD CYLINDERS - KESTREL - The detachable head type cylinders fitted to Kestrel II.S.25 have recently been subjected to an… | ||
| img099 | Engine strip-down, detailing component damage and proposing further comparative testing. | ||
| View original record | -2- cylinder block and head was blowing in the region of A.J. inlet plug. Condition of the Engine. When the engine was stripped it was found that all the head gas joint rings had burnt on a portion of… | ||
| img100 | Photograph of an engine cylinder head showing the combustion chambers and valve ports. | ||
| View original record | E36157 PL. 40 | ||
| img101 | Close-up photograph of an engine cylinder head, showing the combustion chambers and valve guides. | ||
| View original record | ", | ||
| img102 | Close-up photograph of an engine cylinder block's top deck. | ||
| View original record | ", | ||
| img103 | Photograph showing a close-up view of an engine cylinder head. | ||
| View original record | ", | ||
| img104 | Type test report on the Sleeve Valve Kestrel engine, detailing endurance tests and modifications. | ||
| View original record | To R. from Hs/Yng. c. to Rg. Yor. c. to Rg. E. c. to Hy. TYPE TEST ON THE SLEEVE VALVE KESTREL ENGINE. It was decided to submit this engine for a 50 hours Civil Type Test to the provisions of… | ||
| img105 | Endurance test report detailing fuel, timing settings, component failures, and performance metrics. | ||
| View original record | -2- For all endurance running the mixture control was adjusted to give the position of maximum fuel economy (i.e. below the weakest maintained position). For all power curves and throttle curves,… | ||
| img106 | Engine condition following an endurance test, detailing issues with gears, leakage, and plugs. | ||
| View original record | -3- Initial Strip after Endurance Test. The general condition of the engine was good with the exception of the following points :- (1) The reduction gears were scrapped due to the teeth being very… | ||
| img107 | Engine test failure, detailing power observations and the subsequent examination of seized and damaged components. | ||
| View original record | -4- at 90% load was run off satisfactorily - (the auxiliary oil pressure was 4 lbs/sq.in.) - but after one minute at 2800 R.P.M. the header joint blew out at the rear end of B. bank. The joint was… | ||
| img108 | Analysis of gear lubricant, spark plug performance, and a potential engine failure due to pre-ignition. | ||
| View original record | Hs/Yng.S/KK.31.12.31. -5- the gears were not scrapped it appears that the lubricant is not capable of the duty imposed on it by the gears. PLUGS. Lodge A.55. All the central electrodes showed signs of… | ||
| img109 | Photograph of a flanged and threaded machined component. | ||
| View original record | ", | ||
| img110 | Photograph of a damaged piston and connecting rod assembly with fragments. | ||
| View original record | G.44521 | ||
| img111 | The rapid wear of distributor contact points due to excessive cooling of the ballast resistance. | ||
| View original record | To R. from Hs/wst. c.c. Sg. Mor. E. R. W. Ey. ORIGINAL. BALLAST RESISTANCE We have noticed that on 10,000 mile test cars where the average road speeds are high the tungsten contact points in the… | ||
| img112 | Test report on improving gear rattles in the Phantom II Spring Drive through adjustments to ignition, compression, and spring loading. | ||
| View original record | To R. from Ha/LHS. c. Sg. Wor. c. Dm. E. c. Ry. PHANTOM II SPRING DRIVE (S.79915) Tests have been carried out on the Test Bed Unit in order to improve gear rattles at 550 to 650 R.P.M. full load.… | ||
| img113 | Gear rattle, spring driving load, and frictional load settings. | ||
| View original record | -2- and a heavy spring driving load of 30 lbs. at 17.5" radius. This is a big improvement as far as gear rattles are concerned at low speeds full throttle over the standard spring drive setting which… | ||
| img114 | Successful test of a 25 HP synchromesh reverse gear. | ||
| View original record | To R. from Ha/Gry. c. Sg. Wor. c. E. Da. c. Hy. ORIGINAL X5310 Ha/Gry.4/KT.2.1.32. 25 HP. SYNCHROMESH REVERSE GEAR. We have now completed a successful test of the Reverse gear to M.Sch.3374, but with… | ||
| img115 | Cover note attaching a licence for 20.G.IV. | ||
| View original record | ORIGINAL To R. from Hs/Lid. Hs/Lid.6/KT.2.1.32. Attached herewith Licence for 20.G.IV. Hs/Lid. | ||
| img116 | Comparative costs and design of a cast iron ribbed drum versus a pressed steel drum. | ||
| View original record | De. from Hs/Rm. c. E. Hs/Rm.1/AD4.1.32. x4612 We were going into the question of the cost of the cast iron ribbed drum because we think that this should be very little, if any more expensive than the… | ||
| img117 | 25 HP engine clutch slipping issues, comparing spring loads with the 40/50 model and detailing proposed modifications. | ||
| View original record | ORIGINAL To E. From Hs/Rm. c. to Da. c. to By. Hs/Rm.1/MJ.5.1.32. X8480 25 HP. CLUTCH. With the increased size of the 25 HP. engine the clutch has always been on the point of slipping. The original… | ||
| img118 | Blueprint comparing standard and modified clutch leverage for a 25 HP engine. | ||
| View original record | 25 HP CLUTCH OPERATION, MODIFIED LEVERAGE., CLUTCH FINGERS AND LEVERS 'A' AND 'B', ALSO STIFFENED UP IN SECTION, 'A', 2.3", 'B', 3.75", DIA. OF TRUNNION SHAFT, 1.250", -E- TILTED BACK, 1.250, STANDARD… | ||
| img119 | Test report on a modified intermediate gear bush for a Kestrel engine supercharger due to issues with the white metal lining. | ||
| View original record | ORIGINAL x2965 Re. From Hs/YAG. c. to Sor. c. to Sy. c. to Mr. Jaques. Hs/YAG.S/14.S.1. 30.4.35. SUPERCHARGER DRIVING SHAFT - R.28354/1 KESTREL INTERMEDIATE GEAR. Trouble has been experienced with the… | ||
| img120 | Further running tests on bushes in a development engine. | ||
| View original record | -2- Hs/Yar.6/Web.A. 1. 3. 38. GMB'T Further running will be carried out on a set of these bushes in a development engine. Hs/H. R. Young. | ||
| img121 | Sketch showing the position and oil feed to the 'Kestrel' supercharger intermediate gear bushes. | ||
| View original record | SKETCH SHOWING THE POSITION OF & OIL FEED TO THE "KESTREL" S/C INTERMEDIATE GEAR BUSHES ROTOR SPINDLE INTER. GEAR. BUSH E.28254/1 OIL IS FED IN UNDER THE AUXILIARY PRESSURE HERE GEAR CASE VOLUTE.… | ||
| img122 | Test report on a Kestrel-IIS-325 engine before dispatch for flight tests. | ||
| View original record | Rg. From Hs/Yng. c. to Mr. E. c. to Mr. EP. c. to Mr.James. ORIGINAL Hs/Yng./WMA. 5. 1. 32. KESTREL - IIS - 325 FOR TOLLERTON. We have now completed the schedule of tests requested for… | ||
| img123 | Power curves for Kestrel IIS-325 supercharged engine flight tests at Tollerton. | ||
| View original record | KESTREL SUPERCHARGED ENGINES CURVE 276 'F' KESTREL IIS-325 FOR FLIGHT TESTS (TOLLERTON) POWER CURVES 1. AT RATED ALTITUDE (11,500FT) 2. AT RATED BOOST (28.92" HG ABS) FUEL - D.T.D. 134 PLUGS - LODGE… | ||
| img124 | Resolving fuel/air distribution issues in supercharged Kestrel engines at high altitudes and low temperatures. | ||
| View original record | To R. from Hs/Lov. c. to Sg. Wor. c. to RE. R. c. to By. Lp. c. to ME. Lr. c. to Mr.Jaques. ORIGINAL X1908 x3933. Hs/Lov.9/ET.5.1.32. DISTRIBUTION AT HIGH ALTITUDES AND LOW AIR TEMPERATURES.… | ||
| img125 | Flight test report on engine performance with heated air intakes at various altitudes and temperatures. | ||
| View original record | -2- the A/C at full rich due to the concentrated wet mixture favouring only these cylinders. Returning to the heated air intakes at 20,000 ft, there was naturally a gain in R.P.M. using full A/C but… | ||
| img126 | Note on figures obtained for water temperature during a climb with heated intakes. | ||
| View original record | NOTE ON FIGURES OBTAINED DURING CLIMB WITH HEATED INTAKES. On appended curve is given the temperature of the water flowing out from the water jacket under the carburetter diffusers. This did not fall… | ||
| img127 | Graph showing test results for water-heated air intakes on a Fairey 3.F with a modified supercharged Kestrel engine during a climb. | ||
| View original record | TESTS WITH WATER HEATED AIR INTAKES OF FAIREY 3.F. MOD. SUPERCHARGED KESTREL CLIMB. AT 90. A.S.I.V. 2200 R.P.M. FALLING TO 2140 AT 18000 FT. Left Y-Axis: AIR TEMP. STRUT THERMOMETER °C Right Y-Axis:… | ||
| img128 | Blueprint for water-heated air intakes for the Kestrel supercharged engine. | ||
| View original record | WATER HEATED AIR INTAKES FOR KESTREL SUPERCHARGED ENGs. NORMAL INTAKES CARRIED OUTSIDE COWLING TO VENTURI NOZZLES SPECIAL UNIONS SCREWED IN PLACE OF CORE PLUGS ½ DIA WATER PIPES HONEYCOMB RADIATOR… | ||
| img129 | Fuel consumption tests for a fully supercharged 'Kestrel' engine throttled to, and below, the rated boost. | ||
| View original record | ORIGINAL To R. From Ha/Yng. c. to Sg. Wor. c. to RE. Ir. c. to By c. to c. to Mr. Jaques. Ha/Yng.2/WJ.6.1.32. x2965 x2431 FUEL CONSUMPTIONS OF FULLY SUPERCHARGED 'KESTREL' ENGINE THROTTLED TO, &… | ||
| img130 | Graph of Brake Horse Power against Specific Fuel Consumption for Kestrel Supercharged Engines. | ||
| View original record | KESTREL SUPERCHARGED ENGINES CONSTANT SPEED THROTTLE CURVES FROM RATED BOOST POSITION. CURVE 274 °F ENGINE - K-IIS2T 6/1 C.R. STANDARD E32801 CAMSHAFTS - VALVES I.C. 40° ABDC MAGS 38° BTDC AT F.T.… | ||
| img131 | Performance graph showing the consumption loop for a Kestrel Supercharged Engine. | ||
| View original record | KESTREL SUPERCHARGED ENGINES CURVE. 275 'F' CONSUMPTION LOOP - THROTTLE AND MIXT. CONTROL ADJUSTED TO OBTAIN RATED BOOST AT POSN. OF MAX. POWER AT NORMAL R.P.M - 2250 THROTTLE SET AT THIS POSITION AND… | ||
| img132 | Induction pipe tests for Kestrel supercharged engines to improve distribution. | ||
| View original record | From HS/PKN. c. to Wor. Rs. c. to E. Ry. c. to Lr. EP. c. to Mr. Jaques. ORIGINAL x2965 x3874 HS/PKN.2/MA.6. 1. 32. DISTRIBUTION ON KESTREL ENGINES - INDUCTION PIPE TESTS. With a view to improving the… | ||
| img133 | Summary report on tests conducted on standard induction pipe E.3229, concluding that no changes are justified. | ||
| View original record | -2- HS/PIOL.2/MA.6.1.32.cont'd. (4) Standard pipe E.3229 with side-by-side manifolds, but with redistributor between the front and rear portions of the pipe. and Curves 263, 264, 265,/270 "F" show the… | ||
| img134 | Graph of consumption loops at 2250 RPM versus brake horse power for a Kestrel modified supercharged engine. | ||
| View original record | KESTREL MOD. SUPERCHARGED ENGINES CURVE 203F CONSUMPTION LOOPS AT 2250 R.P.M. ENGINE: K-II MS - EXP. 2 WITH SPECIAL INDUCTION PIPE FRONT SECTION OF P/E E.32229 WITH MANIFOLDS E.35840/1 REAR " E.36501… | ||
| img135 | Performance graph showing consumption loops for Kestrel Mod Supercharged engines at 2250 RPM. | ||
| View original record | KESTREL Mod SUPERCHARGED ENGINES CURVE D34F CONSUMPTION LOOPS AT 2250 RPM ENGINE - K-II MS - EXPTL WITH INDUCTION PIPE E30521 LODGE A2 PLUGS FUELS USED - RT 20% - DTD 134 BT FT - DTD 134 + 3cc TEL/GAL… | ||
| img136 | Performance graph showing consumption loops for Kestrel modified supercharged engines at 2250 RPM. | ||
| View original record | KESTREL MOD. SUPERCHARGED ENGINES CURVE 865F CONSUMPTION LOOPS AT 2250 R.P.M. ENGINE - K.II MS - EXCI WITH INDUCTION PIPE E.38182 LODGE H2 PLUGS FUELS USED:- AT 90% - D.T.D. 134 AT F.T. - D.T.D. 134 +… | ||
| img137 | Graph of fuel consumption loops for a Kestrel modified supercharged engine at 2250 RPM. | ||
| View original record | KESTREL MOD. SUPERCHARGED ENGINES CURVE 270 F CONSUMPTION LOOPS AT 2250 R.P.M. ENGINE:- K-II MS. EXP. E WITH INDUCTION PIPE E.32229 AND TWO REDISTRIBUTORS IN INDN. PIPE LODGE A.R. PLUGS FUELS USED:- I… | ||
| img138 | Performance of a P.2 gearbox with an epicyclic third gear. | ||
| View original record | ORIGINAL To R. (At Le Canadel). From Hs. c. to Sg. c. to Wor. c. to E. Da. c. to By. Hs.3/W.8.1.32. X7310 P.2 GEARBOX WITH EPICYCLIC THIRD. We have 27-KX. car running fitted with the gearbox with… | ||
| img139 | The progress of quieting a 25 HP Synchro-Mesh gearbox and standardizing its design. | ||
| View original record | To R. (At Le Canadel). From Hs. c. to Ag. c. to Sg. c. to Wor. c. to S. c. to Ja. c. to Ry. Horiginal Hs/MJ.8.1.32. X7310 +5310 25 HP. SYNCHRO-MESH GEARBOX. It will be seen from the report on 1S-U4… | ||
| img140 | Development and road testing of a modified throttle-edge carburettor for a 25 HP car. | ||
| View original record | ORIGINAL. To R. (At Le Canadel) From Hs. c. to Sg. c. to WCr. c. to E. c. to Da. c. to By. Hs.7/WJ.8.1.32. X5080. 25 HP. CARBURRETTER. We have a 25 HP. car running on the road with a modified standard… | ||
| img141 | Proposal to change the 40/50 chassis batteries to a more cost-effective and internationally standard type from the Exide Co. | ||
| View original record | ORIGINAL To R. from Hs/Wst. c.c. Sg. c.c. Wor. E. c.c. Ds. RV. Hs/Wst.3/AUG.1.32. X6054 X6122 40/50 CHASSIS BATTERIES. For some time we have been considering how it would be possible to reduce the… | ||
| img142 | Comparing a Bosch starter motor's 'teazer' circuit with other systems, including those on Alfa Romeo and Bentley vehicles. | ||
| View original record | To R. from Hs/wet. c.c. Ev. M. c. Sg. WGT. ORIGINAL Hs/wet.7/ADS.1.32. X6079 STARTER MOTOR With reference to your RL/M4.1.32, Bosch certainly has a similar teazer circuit to ours and they also now… | ||
| img143 | Engine strip-down report for model 18.G.IV after a 10,000-mile test. | ||
| View original record | To R. from Hs/GWH. c. Sg. For. c. Da. c. Hy. FN. ORIGINAL Hs/GWH.4/RT.8.1.32. STRIP OF 18.G.IV. AFTER 10,000 MILES TEST. Engine. The engine generally was in a very good condition. The bearings are the… | ||
| img144 | The condition of various vehicle components after testing, including springs, clutch, gearbox, and radiator. | ||
| View original record | -2- EH/GW.4/ET.8.1.32.cont'd. good condition. The valve packings had again collapsed, the steel cups being choc-a-bloc. We have instructed these to be made with more material in them and compressed… | ||
| img145 | Vehicle inspection report detailing the condition of pedals, tank, axles, and shock absorbers. | ||
| View original record | -3- Ha/O.W.H./XT.B.1.32.cont'd. Pedals. The bearings of the pedals were good, only a small amount of slack could be felt. Petrol Tank. The condition of the tank and suspension is good. Front Axle. A… | ||
| img146 | Photograph of a piston crown showing its surface condition. | ||
| View original record | ", | ||
| img147 | Photograph displaying main and big end bearing shells for a 20 HP Chassis. | ||
| View original record | 20 HP CHASSIS | ||
| img148 | Visit to Martlesham discussing high altitude carburation issues on supercharged engines. | ||
| View original record | ORIGINAL To R. from Hs/Lov. c. Sg. Wor. c. Rg. E. c. By. EP. c. Lr. Lp. Hs/Lov.3/KT.9.1.32. X1908. X3933. HIGH ALTITUDE CARBURATION ON SUPERCHARGED ENGINES - VISIT TO MARTLESHAM. On Thursday I visited… | ||
| img149 | Testing a water-heated honeycomb radiator system for the 'Fury' aircraft to resolve high-altitude performance issues. | ||
| View original record | -2- Ha/Lov.3/KT.9.1.32. We showed them the J.F. system of water heated honeycomb radiators in the air intakes, and from their experience they feel that this is the scheme required. Sq/Ldr. McKenna is… | ||
| img150 | The condition of various experimental electrical units after a 10,000-mile test. | ||
| View original record | To R. from Hs/wst. c. Sg. Wor. c. E. De. c. FW. FN. c. SP. MX. ORIGINAL Hs/wst.2/AEM.1.1.32. X6083 19-GIV ELECTRICAL EQUIPMENT. The condition of the various experimental units after a 10,000 mile test… | ||
| img151 | Description of the R.R. Automatic Boost Regulator and its operation. | ||
| View original record | ORIGINAL BP. From Ha/FRL c. to Dr. Rs. c. to DV. Fl. c. t Lr. Ha/FRL.3/MA.11. 1. 32. Y4033 DESCRIPTION OF R.R. AUTOMATIC BOOST REGULATOR. The boost regulator is a device by which the boost of the… | ||
| img152 | Technical description of the operation of a boost control system for an engine. | ||
| View original record | -2- The piston valve then uncovers the edges of the ports, which allow the suction of the supercharger to be exerted on the front end of the relay piston, and the rear end, due to the arrangement of… | ||
| img153 | Continued description of the relay piston and throttles' operation at increasing altitudes. | ||
| View original record | -3- HS/FPL.S/A.11. 1. 32.cont'd. rear of the relay piston causing it to recede, and in doing so, will operate the throttles sufficiently to increase the boost to the rated pressure. This operation… | ||
| img154 | Diagrammatic sketch of a boost regulator, showing the relay piston and pilot's controls in the take-off position. | ||
| View original record | DIAGRAMMATIC SKETCH OF R.R. BOOST REGULATOR. SHEWING RELAY PISTON AT END OF STROKE WITH PILOT'S CONTROL AT GATE POSN. THE CONTROLS SHEWN DOTTED INDICATE THE TAKE OFF POSITION OBTAINED BY OVER RIDING… | ||
| img155 | Diagrammatic sketch of the boost regulator, showing a section and pressure passages from the supercharger. | ||
| View original record | DIAGRAMMATIC SKETCH OF THE R.R. BOOST REGULATOR. SHEWING SECTION & PRESSURE PASSAGES FROM SUPERCHARGER. TO RELAY PISTON, VIA ANEROID PISTON VALVE. THE POSITION OF THE VARIOUS PARTS ARE SHOWN WHEN AT… | ||
| img156 | New Smith instrument board for the 20/25 HP chassis, including cost comparisons. | ||
| View original record | To R. from Hs/Wst. C. Eg. Wor. C. E. De. C. Ev. Roy. ORIGINAL Hs/Wst.1/ADL2.1.32. X6135 20/25 INSTRUMENT BOARD Further to our report ref. Hs/Wst.1/ADL.11.31 dealing with Messrs. Smith's proposed… | ||
| img157 | Cost savings on instrument boards by using sheet metal stampings instead of aluminium castings. | ||
| View original record | -2- Hs/Wst.1/AR.2.1.32 contd. Assuming £1 tool charge extra per patch for the first 240 we should therefore save £10 per instrument board. The Smith panel follows our shape and design but is made of… | ||
| img158 | Experiments conducted on a 4-litre Bentley regarding crankshaft torsional periods. | ||
| View original record | ORIGINAL R. From He/Gry. c. to. SS. or. c. to. R. W. c. to. Sa. He/Gry.3/WA.12. 1. 32. x634. X3805. 4 LITRE BENTLEY - CRANKSHAFT PERIODS. We have recently had an opportunity to carry out experiments… | ||
| img159 | Springing for the 24/25 HP car, recommending against higher rating springs in favor of the standard low rating springs. | ||
| View original record | To Sg. From Hs. c. to Wor. By. c. to Dx. H. c. to De. Hs.6/WJ.16.1.32. X5410 24/25 HP. SPRINGING. Replying to Sg.2/El.1.32 and Cx.5/KW15.1.32. Originally the Expl. Dept. suggested that we should try… | ||
| img160 | Improvements and solutions for 25 HP synchro gearbox difficulties. | ||
| View original record | From Hs/Gry. To Ad. To Mr. c. to RV. ORIGINAL Hm/Gry.S/MA.18. 1. 32 25 HP. SYNCHRO GEAR GEARBOX. X5310. We have now overcome all the difficulties with this gearbox. The idling of the gears is as good… | ||
| img161 | Bench tests conducted on a Scintilla shunt-wound dynamo and regulator. | ||
| View original record | To R. from Hs/Pgt. C. Sg. C. WCR. E. C. Da. EV. ORIGINAL. Hs/Pgt.1/AWR.9.1.32. X6133 SCINTILLA SHUNT-WOUND REGULATED DYNAMO. We have now carried out some bench tests on a Scintilla shunt-wound dynamo… | ||
| img162 | Performance analysis and comparison of Scintilla and Bosch dynamo regulators against a standard 20/25 machine. | ||
| View original record | -2- quickly, and so close the field circuit as soon after it is broken as possible, an additional winding is put on which is excited by the discharge of the field at break. This winding speeds up the… | ||
| img163 | Graph of Dynamo Output Curves under night-running conditions at 80°C. | ||
| View original record | AMPERE OUTPUT DYNAMO OUTPUT CURVES TAKEN UNDER NIGHT-RUNNING CONDITIONS AT 80°C. 1. STANDARD 20/25 MACHINE 2. AS 1. BUT WITH FIELD COILS RE-WOUND FOR SHUNT CONNECTION 3. SCINTILLA SHUNT-WOUND… | ||
| img164 | The wear of brake linings in a P.2 gearbox with an epicyclic third gear. | ||
| View original record | COPY. ORIGINAL To R. From Hs. c. to Sg. Wor. c. to E. Da. c. to By. Hs.6/MJ.19.1.32. x7310. x7360. P.2 GEARBOX WITH EPICYCLIC THIRD. When the gearbox was dismantled after the last run, we reported… | ||
| img165 | Performance improvements and power loss analysis for a compression ignition engine. | ||
| View original record | ORIGINAL R. From HS/EXP. C. to Mr. H.R. C. to Mr. K. C. to Mr. By. Hs/C.F.4/HA.20. 1. 32. COMPRESSION IGNITION ENGINE. x4433. We are now in a position to report an improvement in our performance on… | ||
| img166 | Engine performance improvements related to volumetric efficiency and fuel injection systems. | ||
| View original record | -2- our output at 2000 R.P.M. to 102.8 lbs/sq.in. BMEP at 1447 lbs/HP/HR. We are very anxious for the new cylinder to be pushed on at utmost speed, as we feel confident that its expected improved… | ||
| img167 | Technical memorandum discussing empirical data and design requirements for Phantom II and 25 HP valve springs. | ||
| View original record | E. From Hs/Gry. c. to Ry. Wor. ORIGINAL Hs/Gry.1/MA.21. 1. 32. P.II VALVE SPRINGS. X290. We have the following empirical data to work on :- Camshaft. Rockers. Valve lift. Spring. lbs (valves open.)… | ||
| img168 | Difficulties of jacking cars and evaluating two permanently fitted four-wheel jacking systems. | ||
| View original record | ORIGINAL X3117. S. From HS/Lid. c. to Sg. Nor. c. to S. Da. c. to Ry. FOUR WHEEL JACKING. The problem of jacking a car up with the present method of using one mechanical (or hydraulic) jack placed by… | ||
| img169 | Operation and numerous disadvantages of a vehicle jacking system. | ||
| View original record | -2- Hw/J.Ad.3/34.31.1.32.contd the pistons are forced downwards out of the cylinders, the ends of the pistons having round metal pads come into contact with the ground and further pumping lifts the… | ||
| img170 | The D.W.S. mechanical jacking system and its fitment. | ||
| View original record | -3- HB/Lid.3/MA.21.1.32. (7) Fitting the jacks to the rear axle necessitates altering the shape of our exhaust swan neck to accommodate them. (8) It is very difficult to let the car down off the jack… | ||
| img171 | Comparison of 'Jackall' and 'D.W.S.' jacking systems, including weight, clearance, and cost. | ||
| View original record | -4- We have a second car (27-EX) fitted with two D.W.S. jacks to the front axle, but we are inclined to agree with the makers that two are unnecessary. Lubrication of the jacks is provided for in a… | ||
| img172 | Blueprint illustrating the components and operation of the D.W.S. four-wheel jacking system. | ||
| View original record | D.W.S. FOUR WHEEL JACKING SYSTEM., JACK CLOSED (FRONT AXLE), JACK EXTENDED (REAR AXLE), SPRING SAFETY LOCK-WASHERS, GREASE NIPPLE, BALL RACE, HINGE LOCKING COLLAR, ADJUSTABLE SHAFT, FOOT & EXTENSION… | ||
| img173 | Comparative test report on various sports cars, with performance data for the Alfa Romeo engine. | ||
| View original record | ORIGINAL To R. From Hs. c. to SS. Wor. c. to S. Da. c. to By. PN. SPORTS CARS. X3531. X3993. We have recently tried a number of sports cars. Namely, as follows :- (1) Alfa Romeo. (2) 4 1/2 Litre… | ||
| img174 | Report comparing the performance of a supercharged Lagonda, the 16-34 model, the Phantom II, and American cars. | ||
| View original record | -2- Hs.8/MJ.21.1.32. Cont'd. The supercharged Lagonda satisfied us that it was possible to fit a covered body to a supercharged car and still obtain reasonable silence. Actually the performance of… | ||
| img175 | Crankshaft period issues, comparing a car's performance to a Bentley's and detailing ongoing tests. | ||
| View original record | ORIGINAL To R. From Hs. c. to Sg. c. to Wor. c. to E. c. to Rg. Hs.9/W.21.1.32. X.634. X.29849. X.3805. CRANKSHAFT PERIODS. We ought to have mentioned in our report Hs/Gry.3/ MA.12.1.32 that although… | ||
| img176 | Weights for the 20.G.IV model, broken down into complete, body only, and chassis. | ||
| View original record | DA/EV. From Hs/Lid. c. to Hn. Hs/Lid.1/MA.22. 1. 32. x4538 ORIGINAL 20.G.IV. In reply to DA/EV.6/M.20.1.32., the weights you ask for are as follows :- 20.G.IV Complete. 35 cwt. 2 qrs. 21 lbs. " " Body… | ||
| img177 | Road test results for a Continental 25 HP car comparing performance with different engine configurations and components. | ||
| View original record | To R. From Hs/ c. to Sg. Wor. c. to S. Da. c. to By. ORIGINAL Hs.2/W.22.1.32. CONTINENTAL 25 HP. CAR. X5120 We have now carried out a number of road tests on the 25 HP. with the throttle edge slow… | ||
| img178 | The internal condition of a 25 HP engine and the adaptation of a J.1 head for a Continental 25 HP car. | ||
| View original record | -2- Hs.2/WJ.22.1.32.Cont'd. The inside of the engine with these powers is looked after by the fact that 1G-G4, the last 10,000 miles car, was the best 25 HP. we have ever stripped, due to the balance… | ||
| img179 | Comparison graph of proposed Continental 25 HP engine power curves with an open exhaust. | ||
| View original record | COMPARISON OF PROPOSED CONTINENTAL 25 H.P. POWER CURVES OPEN EXHAUST CURVE A: J1 HEAD. TWO RR CARBS. TO LEC 2924. 1.00 CHOKES 6.34 C/R TIMING ① CURVE B: CHINA HEAD 5.75 C/R STD CARB. AS 20G IV LAST… | ||
| img180 | Experiments to improve mixture distribution in a supercharged Kestrel engine at high altitudes. | ||
| View original record | ORIGINAL R. From Hs/Aln. c. to Sg. Mor. c. to RS. E. c. to RY. Hs/Aln.S/MA.22. 1. 32. X4550 X3933 SUPERCHARGED KESTREL - MIXTURE DISTRIBUTION. We have been running a Kestrel blower unit on a rig,… | ||
| img181 | The design and testing of an 'introverter' deflector for improving induction mixture spray. | ||
| View original record | -3- inclined as in fig.1. This was partly effective; spray could be seen issuing from the discharge at the centre of the main pipe, but the peripheral embrace of the scoop is not sufficient for it to… | ||
| img182 | Experiments on a device to vary liquid discharge and distribution, with a note on suction in the induction pipe. | ||
| View original record | -3- Turning the device makes slight variations in the direction and density of liquid discharge. We did a certain amount of running in several of the above experiments with a standard induction pipe… | ||
| img183 | Blueprint showing various designs for Kestrel mixture re-distributors. | ||
| View original record | KESTREL MIXTURE RE-DISTRIBUTORS BLOWER ELBOW 20% Bypass of gas Fig. 1. ENTRY EXIT BLOWER ELBOW 20% Bypass of gas Fig. 2 ENTRY EXIT BLOWER ELBOW 45 deg of gas Fig. 3 ENTRY EXIT ENTRY END FIG 4 EXIT END… | ||
| img184 | The deletion of the magneto from the 20/25 chassis. | ||
| View original record | To R. & S. From Hs/Wst. Ref. No. Hs/Wst.8/AEW.1.32. X6095 X6063 MAGNETOS ON 20/25 CHASSIS We would suggest that it is now opportune for us to delete the magneto from the 20/25 chassis. Our reasons for… | ||
| img185 | Performance issues and subsequent modifications for the Phantom II Petrol Pump, model LEC 2951. | ||
| View original record | R. From Hs/S1. c. to Ss. Mor. c. to E. Da. c. to W. Ay. Hs/S1.6/MA.25. 1. 32. X7460 P.II PETROL PUMP. LEC 2951. When first supplied, this pump gave a delivery of only 30-40 pts/hr between 1000 and… | ||
| img186 | Continuation of a report discussing the curve of deliveries at various RPMs. | ||
| View original record | -2- The curve of the deliveries with this setting was rather irregular between 500 and 750 RPM, but rose continually between 750 and 2000 RPM, with a rather large increase between 1500 and 1750 RPM,… | ||
| img187 | Performance graph for a Phantom II petrol pump, plotting delivery rate against pump speed for a test bed engine. | ||
| View original record | P.II PETROL PUMP. L.E.C. 2961 FOR TEST BED ENGINE. FITTED WITH 10 C.C. INLET BOTTLE AS IN SCHEME, ALSO WITH ADDITIONAL BOTTLE (MS 509) OVER OUTLET VALVE. HEAD MODIFIED TO MS 508 (.250 DIA. PORTS)… | ||
| img188 | The rehearsal of a French type test, including rating and backfire tests, for the Kestrel III S. Exp.11 engine. | ||
| View original record | ORIGINAL To R. From Hs/Yng. Hs/Yng.1/MJ.27.1.32. Y4514. c. to Rg. Vor. c. to Rg. c. to By. Fi. c. to Lf. Lr. FRENCH TYPE TEST - RATING & BACKFIRE TESTS. KESTREL III S. EXP.11. Before the Delage Co.… | ||
| img189 | Engine safety tests, including performance data, backfiring issues, and cylinder testing. | ||
| View original record | -2- Rs/Yng.1/W.27.1.32. Cont'd Nominal R.P.M. (Normal) Rated Altitude Nominal BHP. at Rated Alt. (O.L.) Power. Air 6101. AP.840. French Rating. 2500 11,500 460 515 530 English " 2250 11,500 428 ---… | ||
| img190 | Test report detailing engine backfire tests, consumption loops, and performance analysis. | ||
| View original record | -3- then run up to nominal power at nominal R.P.M. Heavy backfires were produced by earthing the inlet mag. Backfires carried out on this brake setting were as follows :- 20 at 2500 R.P.M. 20 2250 "… | ||
| img191 | Procedure for determining torque, power, and consumption curves at full throttle. | ||
| View original record | COPY. 5 - DETERMINATION OF TORQUE, POWER & CONSUMPTION CURVES AT FULL THROTTLE. The torques, powers and consumptions developed by the engine at various engine speeds at full throttle are measured. The… | ||
| img192 | Procedure for conducting a safety test on an engine, focusing on provoking and observing backfires. | ||
| View original record | COPY. 7 - SAFETY TEST - (a) The inlet valves of one cylinder are set to remain open from 1 to 3 mm. (.040 to 120"). The engine is run from extreme slow running R/3 to nominal speed N. at speeds… | ||
| img193 | Blueprint graph showing comparative power curves for a Kestrel supercharged engine during French type test rating tests. | ||
| View original record | "KESTREL" SUPERCHARGED ENGINES CURVE 279 "F" FRENCH TYPE TEST RATING TESTS COMPARATIVE POWER CURVES OBTAINED AT 11-500 FT. BY APPLYING: A - STANDARD A.P. 840 CORRECTIONS B - CORRECTIONS TO FRENCH T.T.… | ||
| img194 | Formulas for temperature and pressure corrections on engine power. | ||
| View original record | COPY. Courbevoie, January 7th, 1932. TEMPERATURE AND PRESSURE CORRECTIONS. 1° - Back pressure corrections. C1 = (18p x Pb) / 100 where p back pressure (back pressure in the exhaust pipes in Kgs per… | ||
| img195 | Page of calculations for determining engine power using several variables and formulas. | ||
| View original record | -2- 1° - C₁ = (18p x Pb) / 100 where p = .05 + (.760 - .4232) 1.36 = .414 Kgs per sq.cm. Pb = 414 HP. C₁ = (18 x .414 x 414) / 100 = 30.8 2° - C₂ = (500 + t₀) / (500 + tg) where t₀ = 18°C. tz = 7°C.75… | ||
| img196 | Performance graph showing comparative consumption loops for Kestrel supercharged engines at 2500 R.P.M. | ||
| View original record | KESTREL SUPERCHARGED ENGINES CURVE 280 'F' COMPARATIVE CONSUMPTION LOOPS AT 2500 R.P.M. ① FULL THROTTLE AT 11-500 FT. ② THROTTLED TO REPRODUCE ALTITUDE POWER AT GROUND LODGE A.2 PLUGS D.T.D 134 FUEL… | ||
| img197 | Performance graph showing comparative consumption loops for a Kestrel supercharged engine. | ||
| View original record | KESTREL SUPERCHARGED ENGINES CURVE 281 "F" COMPARATIVE CONSUMPTION LOOPS AT 90% F.T. LOAD (2500 R.P.M) ① AT ALTITUDE 11500 FT, AND 2500 RPM ② THROTTLED TO REPRODUCE ABOVE CONDITION AT GROUND ENGINE -… | ||
| img198 | Short memo confirming a test is underway for the R.R. Single Expanding Carburetter. | ||
| View original record | ORIGINAL To R. From Hs. c. to Rg. Wor. c. to E. Dn. c. to Ry. Hs.1/WJ.29.1.32. X7080. R.R. SINGLE EXPANDING CARBURETTER. We have one of these carburetters running on the test beds. We expect it will… | ||
| img199 | 12-cylinder engines and new features in U.S. competitor cars. | ||
| View original record | To S. From Hs. c. to Sg. Mpr. c. to S. Da. c. to W. ORIGINAL 12. CYL. ENGINES. X3993 XU024 It would appear that the twin six engine is rapidly replacing the straight eight on the big cars in U.S.A.… | ||
| img200 | Comparative table of specifications for 12-cylinder engines from various car manufacturers. | ||
| View original record | 12 CYLINDER ENGINES. 1.2.32. Car. Capacity. 7000 Balance Wts. Damper. Journal Dia. No of Spring Packard 8131 470 Yes Yes 2.75" 4 Auburn 450 Yes Yes 4 Lincoln 7350 350 Yes Yes 2.50 7 Pierce Arrow F.D.… | ||
| img201 | Examination report on the big end split pinning of three Kestrel IB engines. | ||
| View original record | R. From Hs/LEH. c. to Sg. Mor. c. to Rg. E. c. to EP. Hy. c. to Mr. Jaques. ORIGINAL x3859. x4117. Hs/LEH.6/M.A.1. 2. 32. KESTREL IB ENGINES: EXAMINATION OF BIG END SPLIT PINS. We have now examined… | ||
| img202 | Continued report on the examination of wear on split pins in IB and II a engines. | ||
| View original record | -2- Hs/LBH.6/A.1.2.32.cont'd. From these examinations it appears that the wearing of the split pins is not as extensive on the IB as on the II a engines, although on each engine one pin was found that… | ||
| img203 | Tests conducted to reproduce big end split pin failures in Kestrel engines. | ||
| View original record | [Handwritten] R. From Hs/LMS. R.H.P R.W.H G.P.B c.c. to Mr. Jaques. x2965 x3857 [Typed] ORIGINAL. KESTREL ENGINES REPRODUCTION OF BIG END SPLIT PIN FAILURES. Tests, using the old standard slack… | ||
| img204 | Inspection report detailing the condition of various fork and blade end pins after a test. | ||
| View original record | -2- Fork End Pins. No.1 End. Front B Pin. One leg, broken off at head, had come away, the remainder of the pin stayed in position, and showed extensive polishing on the stem. No.2 End. Rear A Pin.… | ||
| img205 | Sourcing Stalloy iron strips for experimental ignition coil cores and discussing alternative designs. | ||
| View original record | ORIGINAL To R. from Hs/nst. c. Eg. WOT. S.R. Dr. Hy. Hs/nst.1/AD4.2.32. X6058 IGNITION COIL CORES. With reference to P2/M24.1.32, we are arranging to obtain some Stalloy iron strips similar to that… | ||
| img206 | Visits to Gleason Works and Pierce Arrow in the U.S.A., detailing observations on gear manufacturing and vehicle development. | ||
| View original record | To R. From Ha/Rm. (In U.S.A.). c. to Sg. c. to Wor. c. to D. c. to Sf. X55 X4588 4.2.32. We spent Tuesday at Gleasons Works. They have several new machines notably for grinding hypoid gears, high… | ||
| img207 | Report page discussing vehicle suspension, brakes, engine smoothness, and details of a competitor's crankshaft damper. | ||
| View original record | -3- (4) Improving suspension. (5) Getting a good brake hook up. and the nett result of their efforts is that they have produced a car with many Rolls-Royce characteristics. I think that one thing we… | ||
| img208 | Analysis of a Pierce-Arrow hot spot manifold, an A.C. intake silencer, and rubber engine mountings. | ||
| View original record | -3- EXHAUST > (THERMOSTATICALLY CONTROLLED) BUTTERFLY HOT SPOT PIERCE ARROW Intake Silencer. The A.C. air intake silencer and cleaner is fitted. These silence by obtaining some sort of damping… | ||
| img209 | Blueprint of a Pierce Arrow engine mounting and notes on an exhaust silencer. | ||
| View original record | -4- PIERCE ARROW ENGINE MOUNTING Exhaust Silencer. They use a Burgess muffler split up into two 4 foot lengths. I should guess that it only weighs half as much as our system. They say that they tried… | ||
| img210 | Technical report discussing improvements and observations on steering, suspension, engine, and transmission components. | ||
| View original record | -3- Steering. This is disturbingly good. It appears to be partially attributable to :- (1) Ride Control. Adjustable shock absorbers. The stiffening up of the shock absorbers at high speeds at once… | ||
| img211 | Diagram showing a self-adjusting tappet and a crankshaft damper. | ||
| View original record | SELF ADJUSTING TAPPET PIERCE DIAMOND BORED AIR ESCAPES HERE SPRING ABOUT 10 LBS. .032 TO .062 AMOUNT OF OIL CONTROLLED TAPPET CLEARANCE. OIL FEED FROM CRANKCASE 25/30 LBS/D" BALL SEATS HERE WHEN… | ||
| img212 | Pros and cons of sheet metal versus moulded battery lids. | ||
| View original record | ORIGINAL. DA/EV. From Hs/Wst. c. to IV. c. to SG. Wor. Hs/Wst.4/MA.S. 2. 32. 25HP AND J.S. BATTERIES. (DA/EV.1/M.2.2.32.) (X6055) With reference to your request for a statement on the question of… | ||
| img213 | Optimal air gap size in a jump spark battery ignition distributor. | ||
| View original record | ORIGINAL K. From Hs/Wst. c. to Ry. Wcr. c. to Sg. Da. Hs/Wst.6/MA.S. 2. 32. X6118 R.R. JUMP SPARK BATTERY IGNITION DISTRIBUTOR. We have observed that the gap between the H.T. rotor blade tip and the… | ||
| img214 | Proposal for chassis wiring to protect batteries against over-discharge using a master switch system. | ||
| View original record | To R. from Hs/ust. c. Cox. Sg. c. E. De. c. R. Cx. ORIGINAL. Hs/ust.1/ADO.2.32. X6082 X7741b R.R. CHASSIS WIRING. We are sending you herewith a diagram showing a suggestion we have in mind for the… | ||
| img215 | Continued note on using a diaphragm to protect the starter motor circuit and chassis wiring. | ||
| View original record | -2- The diaphragm might also be additionally utilised to break the teaser circuit of the starter motor in order to prevent possible damage should the starter button be inadvertently pressed while the… | ||
| img216 | Analysis of 12-cylinder engine crankshafts, vee angles, and torsional vibrations for a 6250cc engine. | ||
| View original record | To R. From Ha/Gry. c. to Rg. Mor. c. to E. Rg c. to PY. ORIGINAL Ha/Gry.1/WJ.9.2.32. X634 12 CYL. ENGINE CRANKSHAFTS & VEE ANGLE. Numerical Results for 6250 cc; 3½" x 4½" There is a choice for this… | ||
| img217 | Comparative study of bearing and balance weight arrangements for a 12 cylinder engine. | ||
| View original record | 7 BRG: l = 36.9 2.5 1.8 1.8 2.5 -x-1.75K 2.5 2.5 2.2 2.5 x=2.47 4 BRG: l = 30.7 3.0 3.7 x=2.47 3 BRG: l = 29.8 3.0 3.0 3.0 x=2.47 CHRYSLER 12 WTS ALFA 5 WTS CHRYSLER De Soto 4 WTS A.C. 3 WTS 8 WTS 4… | ||
| img218 | Data table for a 12-cylinder engine, analyzing properties at 30° and 45° angles. | ||
| View original record | Header Information: 12 CYL Z = 2 B = p(2T - d) Table Data: Column Headers: ORDER Under 30° section: Col 1: * Col 2: B/W e Col 3: N Col 4: * B/W e Under 45° section: Col 5: N Col 6: * B/W e Row Data… | ||
| img219 | Technical table of coefficients for calculating torsional vibrations in V-engines with 60, 65, 80, and 90 degree bank angles. | ||
| View original record | VEE ENGINES — TORSIONAL VIBRATIONS Sin nπ/B 60° 65° 80° 90° n ω *θ/N *Z n ω *θ/N *Z n ω *θ/N *Z n ω *θ/N *Z 1.414 1.77 82.5 1.5 1.89 60 1.730 2.18 45 1.78 2.24 1.0 .16 17.5 1.98 .84 200 .318 .06 180 0… | ||
| img220 | Visit to R.A.E. Farnborough to inspect a faulty boost regulator, detailing the causes and proposed modifications. | ||
| View original record | ORIGINAL K4033 R. From HE/Fms. C. to SG. Wor. C. to BG. E. C. to WH. R. Hs/Fms.2/MA.10. 2. 32. VISIT TO R.A.E. FARNBOROUGH. We made a visit to Farnborough, at the request of the RAE for the purpose of… | ||
| img221 | On modifications to boost regulators and the development of automatic altitude mixture control units for aircraft engines. | ||
| View original record | -2- modification required is positive locking of the aneroid in the unit casing, to avoid any possibility of "fidgeting" and forming the metal dust, due to wear in the threads. While still on the… | ||
| img222 | The performance of Vee carburetters on Kestrel engines and related flight tests. | ||
| View original record | -3- He/Drs.3/14.10.32.CHAK1. Kestrel 41 engine. Vee carburettors. The performance of the Vee carburetter fitted to Kestrel 41 engine in the Fox machine at Farnborough, has been the subject of a… | ||
| img223 | The effect of individual magneto timing on engine detonation. | ||
| View original record | ORIGINAL. R. From Hs/YAG. c. to SG. H.R. c. to MS. E. c. to BY. c. to Mr.Jaques. x2965. Hs/Yag.1/HA.10. 2. 32. THE EFFECT OF INDIVIDUAL MAGNETO TIMING ON DETONATION. A scheme was bee drawn up to… | ||
| img224 | Recommendations on magneto settings and wiring schemes to manage engine detonation. | ||
| View original record | -2- He/Cme.1/JMA.10.4.32.contd That is to say the detonation could be heard more often at the same distance from the engine but not more distant from it. SUMMARY. From the foregoing it appears that we… | ||
| img225 | Test report on an Alfa-Romeo engine. | ||
| View original record | To R. From Hs/Mths. c. to Sg. Wor. c. to E. Da. c. to By. TEST REPORT OF ALFA-ROMEO ENGINE. ENGINE TYPE. This unit has bore of 65 m/m. and stroke of 88 m/m. giving a total capacity of 1750 cc's. The… | ||
| img226 | Engine test report discussing ignition, spark plugs, running speed, vibrations, and camshafts. | ||
| View original record | -2- Hs/Mths.3/MJ.10.2.32. Cont'd. IGNITION. The ignition system is Bosch Coil type and distributor has double contact breaker. According to the Handbook automatic ignition advance device operates… | ||
| img227 | Report page detailing engine test results, including valve timings, oil pressure, and component accessibility. | ||
| View original record | -3- Ha/Wths.3/WJ.10.2.32.Cont'd. directly on to the valves and the clearance between the cams and valves for running conditions is .012" - .014". The valve lift with no clearance is .305 for both… | ||
| img228 | Power and consumption curve and valve timing diagram for an Alfa-Romeo unit with exhaust manifold only. | ||
| View original record | V1301 UNIT ALFA-ROMEO VALVE TIMING (.014 VALVE CLEARANCE) POWER & CONSUMPTION CURVE EXHAUST MANIFOLD ONLY I.O. 15° E.C. 15° I.C. 55° E.O. 46° B.H.P. B.M.E.P. Pints/BHP/Hr R.P.M. C.M. 4-12-25 | ||
| img229 | Graph of an Alfa-Romeo engine's boost pressure and temperature against RPM. | ||
| View original record | ALFA-ROMEO BOOST PRESSURE & TEMPERATURE BAROMETER 766 M/M INTAKE TEMPERATURE 12°C BOOST TEMPERATURE BOOST PRESSURE BOOST PRESSURE INS. MERCURY BOOST TEMPERATURE °C R.P.M. V130 | ||
| img230 | Graph showing compression pressures against RPM for an Alfa-Romeo unit with a 5.35:1 compression ratio. | ||
| View original record | UNIT ALFA-ROMEO COMPRESSION PRESSURES COMPRESSION RATIO 5.35:1 COMPRESSION PRESSURE LBS/SQ IN 170 160 150 140 130 120 110 1000 1500 2000 2500 3000 3500 4000 4500 R.P.M. V12 | ||
| img231 | Graph plotting the mechanical efficiency of an Alfa-Romeo unit against its RPM. | ||
| View original record | UNIT ALFA-ROMEO MECHANICAL EFFICIENCY MECHANICAL EFFICIENCY % 95 90 85 80 75 70 R.P.M. 1000 1500 2000 2500 3000 3500 4000 4500 | ||
| img232 | Exhaust valve lift diagram for an Alfa-Romeo unit. | ||
| View original record | UNIT ALFA-ROMEO EXHAUST VALVE LIFT DIAGRAM LIFT (INS.) 0.325 0.300 0.275 0.250 0.225 0.200 0.175 0.150 0.125 OPENING EXHAUST | ||
| img233 | Graph plotting valve lift against the engine crank angle. | ||
| View original record | VALVE 0.100 0.075 0.050 0.025 100 120 140 160 180 B.D.C. 200 220 240 CRANK ANGLE (DEGREES) | ||
| img234 | Graph plotting a curve related to engine timing, showing a closing point and Top Dead Center (TDC). | ||
| View original record | V 1297 CLOSING T.D.C. | ||
| img235 | Blueprint graph illustrating valve timing profiles relative to crankshaft angle around Top Dead Center (TDC). | ||
| View original record | INLET OPENING TDC (DEGREES) 260 280 300 320 340 360 380 400 R.H.R 8.2.29 | ||
| img236 | Graph illustrating the inlet valve lift for an Alfa-Romeo unit. | ||
| View original record | UNIT ALFA-ROMEO INLET VALVE LIFT OPENING 0.325 0.300 0.275 0.250 0.225 0.200 0.175 148 | ||
| img237 | Blueprint graph showing a 'closing' curve. | ||
| View original record | V1298 CLOSING | ||
| img238 | Graph showing valve lift against crank angle for inlet and exhaust valves around top dead centre. | ||
| View original record | VALVE LIFT 0.150 0.125 0.100 0.075 0.050 0.025 T.D.C. INLET EXHAUST CLOSING CRANK ANGLE TDC 340 360 380 400 420 440 460 | ||
| img239 | Graph plotting a curve with an x-axis labelled B.D.C. and numerical increments. | ||
| View original record | (SEE RINGS) 500 520 540 B.D.C. 560 580 600 620 | ||
| img240 | Preliminary test results and modifications for the Phantom II Expanding Carburetter. | ||
| View original record | To R. From Ha/Sdl. ORIGINAL c. to Sg. Wor. c. to R. Ds. c. to Hy. R.R. Phantom ll Expanding Carburetter. We have carried out preliminary tests on the Phantom ll expanding carburetter to LeC.2972. The… | ||
| img241 | Carburettor performance issues, identified faults, and ongoing development work. | ||
| View original record | -2- Slow running operates quite well and covers the idling range up to 500 RPM, light running at which speed the diffuser definitely commences to supply fuel. Under full load conditions the small… | ||
| img242 | Performance comparison graph between a 2.500 Bore Single SU carburettor and an RR Updraught Expanding carburettor. | ||
| View original record | COMPARISON BETWEEN 2.500 BORE SINGLE S.U. CARB AND R.R. UPDRAUGHT EXPANDING CARB (LEC 2972) TESTS WITH OPEN EXHAUST " " W.W. 114 (E82LL8) CAMSHAFT 4.8:1 COMPRESSION RATIO AREA PAST S.U. CARB - 1.9" □… | ||
| img243 | Comparison of the merits of an epicyclic third gearbox versus a synchro-mesh gearbox. | ||
| View original record | ORIGINAL To R. From Hs. c. to Sg. Dor. c. to Hr. Da. c. to BY. Hs.2/WJ.11.232. K7310 P.2 GEARBOX WITH EPICYCLIC THIRD. We have now got this gearbox working satisfactorily. It works as well as one can… | ||
| img244 | Progress update on synchro-mesh and experimental epicyclic gearboxes for the 25 HP and Phantom II models. | ||
| View original record | -2- Hs.26/W.11.2.32.Cont'd. Reviewing our position - we are actually on production with the synchro-mesh box for the 25 HP. which will give us a remarkably silent third gear and very easy change. The… | ||
| img245 | Tests of a new full-length taper bush for the reverse gear of a 25HP Synchromesh Gear Box. | ||
| View original record | ORIGINAL X5310. To E. From Hs/GWH. c. to B/. c. to Wor. c. to Ds. Hs/GWH.11/MA.12. 2. 32. Re: 25HP SYNCHROMESH GEAR BOX. REVERSE GEAR. We have carried out the following tests with the new full length… | ||
| img246 | Confirming experiments on the Japan 3 Dynamo, specifically for an improved 3rd brush machine. | ||
| View original record | E. From Hs/Wst. c. to By. c. to RV/RD. Hs/Wst.S/MA.12. 2. 32. JAPAN 3 DYNAMO. X6005 With reference to our conference on the above when it was decided to go ahead temporarily with the present 20/25… | ||
| img247 | Report comparing a synchromesh gearbox to one with an epicyclic third gear. | ||
| View original record | ORIGINAL To R. From Hs. c. to Sg. Wor. c. to E. Hs. c. to Ey. No.5/WJ.12.2.32. K7310 P.2 GEARBOX WITH EPICYCLIC THIRD. In my report of yesterday ref: No.2/WJ.11.2.32., I omitted to mention one point… | ||
| img248 | Experiments to cure overrun gear rattles on a 25HP model by fitting a friction damper. | ||
| View original record | ORIGINAL I.634. X.5310. R. From Ha/Gry. c. to SE. Wor. c. to W. Da. c. to EV. Ha/Gry./2/MA.15. 2. 32. OVERRUN GEAR RATTLES. 25HP. We have recently been able to carry out further experiments on this… | ||
| img249 | Conference at the Air Ministry discussing the feasibility of battery ignition on aero engines. | ||
| View original record | R. from Hs/Wst. c. Cg. Wor. c. RK. R. c. DK. ORIGINAL Hs/Wst.3/A.M.8.3.32. X6131 X6102 BATTERY IGNITION ON AERO ENGINES Rg. and myself visited the Air Ministry on Tuesday 9th inst. in order to attend… | ||
| img250 | Conference memo discussing magneto versus battery ignition for aero engines, including design compromises and competitor progress. | ||
| View original record | -2- The general feeling of the conference was that although there were no doubt technical grounds for objection from a radio point of view, Dr. Bairsto's arguments were too academic and the extra… | ||
| img251 | The necessity and design considerations for radio screened sparking plugs in aero engines. | ||
| View original record | R. From He/Wst. C. to Sg. Wor. C. to Sg. R. C. to Sy. ORIGINAL He/Wst.11/MA.15.2.32. RADIO SCREENED AERO ENGINE SPARKING PLUGS. XC102 It now becomes necessary for us to use sparking plugs on our aero… | ||
| img252 | Cooperating with plug manufacturers to create a new design outside of standardisation considerations. | ||
| View original record | -3- He/Wat.11/is.15.2.32.contd It would appear therefore that we can cooperate with the plug manufacturers and get a design of plug and screen which will ideally suit our design requirements without… | ||
| img253 | Test report comparing the durability of standard versus two-piece cylinder block top joints on a 'Kestrel' engine under detonation conditions. | ||
| View original record | To H. From Hs/Yng. c. to Sg. Ver. c. to RG. H. c. to By. CYLINDER CONSTRUCTION - TOP JOINTS - 'KESTREL' ENGINES. Handwritten: r2965 / x38d. We are primarily interested in the top joint construction of… | ||
| img254 | Engine tests comparing standard and two-piece cylinder blocks, with analysis of detonation and overheating effects. | ||
| View original record | -2- Ha/Yng/1/H1.16.2.32. Cont'd. Results. The split pin tests have been reported on separately in Ha/LHM.2/HA.3.2.32. When the engine was stripped there were no signs of the sand blast effect which we… | ||
| img255 | Drawing of two rings. | ||
| View original record | ", | ||
| img256 | Drawing of a circular component, possibly a ring or washer. | ||
| View original record | ", | ||
| img257 | Drawing of two rings. | ||
| View original record | C 12 / 1 2 | ||
| img258 | Notification that an engine unit is now running on the test bed. | ||
| View original record | Secret. To R. From Hs. c. to Sg. Wor. c. to K. Da. c. to BY. J.3. Hs.S/WJ.17.2.32. X.5770. The engine unit of the above car is now running on the test bed. Hs. | ||
| img259 | Comparing the durability of steel versus aluminium wings during 10,000-mile road tests. | ||
| View original record | To Da/Ev. From Ha/GWH. Ha/GWH.1/MJ.18.2.32. X155. STEEL AND ALUMINIUM WINGS. Re. your memo Da/Ev.1/M12.2.32. We have continually reported during our 10,000 miles tests in France (see daily and final… | ||
| img260 | Test report on a reduction gear spring drive for a Kestrel engine. | ||
| View original record | ORIGINAL To R. From He/Tng. c. to Sg. Vor. c. to Rg. T. c. to Ry. Lr. He/Tng.4/W.18.2.32. X4010. X2965. REDUCTION GEAR SPRING DRIVE - DES.1335. KESTREL 11 - S - 93. A drive to the above scheme has… | ||
| img261 | Engine tests with different airscrews to investigate and reduce gear rattle periods. | ||
| View original record | -2- Hs/Yng.4/SJ.18.2.32. Cont'd. (3) For this Series of tests the engine was rebuilt with spring blades E.30827 and mounted on a hangar test stand. A 'light' airscrew was fitted and the engine run up… | ||
| img262 | Graph showing the variation in angular deflection versus torque for a Kestrel engine's reduction gear spring coupling. | ||
| View original record | KESTREL ENGINES CURVE 283'F' REDUCTION GEAR SPRING COUPLING - D.F.S. 1335 VARIATION IN ANGULAR DEFLECTION OF VARIOUS UNITS WITH INCREASING TORQUE, MEASURED IN DEGREES OF CRANKSHAFT MOVEMENT ORIGINAL… | ||
| img263 | Graph showing the variation of angular deflection for a Kestrel engine's reduction gear spring coupling with increasing torque. | ||
| View original record | TOP TITLE BOX: "KESTREL" ENGINES, REDUCTION GEAR SPRING COUPLING - D.F.S. 1335, VARIATION OF ANGULAR DEFLECTION OF VARIOUS, UNITS WITH INCREASING TORQUE MEASURED IN, DEGREES OF CRANKSHAFT MOVEMENT TOP… | ||
| img264 | Graph showing variation in angular deflection of a reduction gear spring coupling with increasing torque for Kestrel engines. | ||
| View original record | "KESTREL" ENGINES CURVE 285'F' REDUCTION GEAR SPRING COUPLING - D.F.S. 1335 VARIATION IN ANGULAR DEFLECTION OF VARIOUS UNITS WITH INCREASING TORQUE MEASURED IN DEGREES OF CRANKSHAFT MOVEMENT A.B.C… | ||
| img265 | Contents and cost of the chassis tool kit, specifically regarding single-ended spanners. | ||
| View original record | ORIGINAL To R. From Hs. c. to Sc. Wor. c. to E. Dn. c. to ST. CHASSIS TOOL KIT - SINGLE ENDED SPANNERS. X.7580. X.5580. The tool kit which we have been supplying with our cars in the past, has been… | ||
| img266 | The initial test and performance of the J.3 engine unit, including details on general performance, power, and camshaft settings. | ||
| View original record | SECRET. ORIGINAL. To R. From Hs. c. to Sg. Wor. c. to E. Da. c. to By. REPORT ON J.3 ENGINE UNIT. K5770. The first J.3 unit was received on test on 17.2.32 and after running light for some time was… | ||
| img267 | Engine test report detailing vibrations, leaks, ignition, and post-run condition. | ||
| View original record | -2- Hs.6/W.19.2.32. Cont'd. The inlet valve duration appears from these figures to be rather less than it should be and the next time the engine is built up we shall check it over. VIBRATIONS. The… | ||
| img268 | Blueprint graph comparing the B.M.E.P. and valve timing for Japan III and Japan I engine units. | ||
| View original record | JAPAN 3 UNIT V1315 POWER CURVE (OPEN EXHAUST) COMPARISON OF B.M.E.P. BETWEEN JAPAN III & JAPAN I VALVE TIMING (.020 TAPPET CLEARANCE) JAPAN III 10º EC 17º IC 54º 43º EO JAPAN I 1º GC 3.5º IC 49º 43º… | ||
| img269 | Comparing the weight of the J.3 unit to the standard 20/25, noting a reduction of 81 lbs. | ||
| View original record | SECRET ORIGINAL To R. From Hs. c. to Sg. Wor. c. to E. Da. c. to HY. Hs.7/MJ.29.2.32. X.5770. X.4538. J.3 UNIT. A comparison of the weight of J.3 unit compared with the present standard 20/25 shows… | ||
| img270 | Visit to Messrs. Lucas to discuss developments in voltage regulators, starter motors, and horns. | ||
| View original record | ORIGINAL To R. from Hs/wst. c. SG. c. WOR. E. c. Ds. EV. Hs/wst.1/ADSO. 2.32. VISIT TO MESSRS. LUCAS Y6018 Y6092 MR. Brock and myself visited Messrs. Lucas on Wednesday the 17th inst. During the… | ||
| img271 | Clarifying the weight calculation of the 20-GIV chassis compared to the standard 'T' series. | ||
| View original record | Da/sv. from Hs/Lid. c.s. e. Ox. G.R. Wox. Hs/Lid.1/ADE2.2.32. y4838. BODY WEIGHT OF 20-GIV With reference to Da/EV2/WA 2.2.32 it appears that you have unfortunately not received our memo which gave… | ||
| img272 | Clarifying weight calculations for a 20-GIV model, correcting for accessories and an oversized petrol tank to determine a final body weight. | ||
| View original record | -2- Hs/Lid.1/AM22.2.32 contd. The total weight of 20-GIV was 35 cwt. 2 qrs. 21 lbs deducting the above chassis and spares weight (2991 lbs.) we arrive at a calculated body weight of 8 cwts. 3 qrs. 21… | ||
| img273 | Providing dimensional figures for Alfa gears following a telephone conversation. | ||
| View original record | ORIGINAL To Ds. From Ha/Gry. Ha/Gry.3/WJ.22.2.32. X W 82 ALFA GEARS. Replying to telephone conversation, we are sending you the following figures which we hope are what you want. The width along the… | ||
| img274 | Test results and modifications for the Phantom II expanding type carburetter. | ||
| View original record | To R. From He. c.c. Bgr. c.c. E. c.c. Hy. PHANTOM II EXPANDING TYPE CARBURETTERS Following on our preliminary report He/adl.S/WJ. 12.2.32, the following results have been obtained :- The first tests… | ||
| img275 | Carburettor modifications and performance tests, detailing changes to address fuel supply issues. | ||
| View original record | -2- One of the troubles we have had was insufficient fuel at maximum R.P.M. full throttle. The main jet was increased from .125 to .172" without any appreciable difference. We made one experiment by… | ||
| img276 | Service complaints about brake drum wear and an evaluation of alternative materials and suppliers. | ||
| View original record | To R. from Hs. c. Sg. Wor. c. E. Da. c. Dy. BRAKE DRUMS x4612 A service complaint which has always been with us is the wear of brake drums. This is an expensive repair because it means machining the… | ||
| img277 | Production of the J.3. chassis and Peregrine car bodies. | ||
| View original record | Secret ORIGINAL Da/EV. from Hs. C. E. R. Eng. Hs.2/AD24.2.32. X5770. J.3. CHASSIS The number of the first chassis will be J.3.1. As we have permission to go ahead with the second body we think that… | ||
| img278 | Predicting the relative severity of 6th order torsional vibration on a Phantom II engine compared to a 60 Vee 6250cc engine. | ||
| View original record | ORIGINAL R. From HS/Gry. c. to E. c. to Rs. TORSIONAL VIBRATIONS. X634 E. has asked for a prediction of the relative severity of the 6th. order vibration on P.II and a 60 Vee 6250 cc. engine. That is… | ||
| img279 | Method to overcome gear rattles on the 25 HP model by adding a small friction damper. | ||
| View original record | No R. from Ms. c. Sg. Wor. c. E. De. c. Dy. Hc. ORIGINAL X.634. X.5310. Hs.5/AD34. 2. 32. 25- HP. GEAR RATTLES We have reported in our Hs/Cry.2/MAL5.2.32 that we have been able to overcome gear… | ||
| img280 | Steering problems, specifically joggles and shocks on Phantom II cars, and potential solutions. | ||
| View original record | R. From Ha/Lid. c. to AG. Wor. c. to S. Da. c. to AV. ORIGINAL N 57 STEERING P.II. We are constantly hearing of complaints of steering joggles and shocks on P.II cars; this trouble is particularly… | ||
| img281 | Proposal to fit a flexible shackle to a car for a 10,000-mile test to improve steering performance. | ||
| View original record | -2- EB/Lid.2/MA.28.2.31.Contd. our own. It appears that a more nearly irreversible steering than ours is generally used, the flexible shackle in combination with quite flexible steering rods is… | ||
| img282 | Dissatisfaction with the noise from the J.3 engine unit's gears and the need for a solution. | ||
| View original record | SECRET. ORIGINAL. To R. From Hs. c. to Sg. Wor. c. to W. Da. c. to Ry. Hs.1/WJ.27.2.32. X5770. J.3 ENGINE UNIT. This engine unit has been on the bed again but we are not satisfied with the silence of… | ||
| img283 | Sluggish motion and lubrication issues in sequence starter motors, comparing different designs. | ||
| View original record | ORIGINAL To R. from Hs/Wst. c. Sg. Nor. c. E. De. c. Ry. Y543 X6079 SEQUENCE STARTER MOTOR TROUBLES. We have found that the chief difficulty experienced with these motors in service and on… | ||
| img284 | Gear teeth friction, pinion engagement, and potential improvements to motor armature windings. | ||
| View original record | -2- With regard to the other difficulty of gear teeth friction, this is a function of the armature torque on the teazer winding and we consider that if our pinion and flywheel gear ring teeth were… | ||
| img285 | Visit to R.A.E. Farnborough concerning flight tests of carburetters on a 'Vee' (Kestrel 41) engine. | ||
| View original record | ORIGINAL R. From He/Lov. C. to Mr. H. C. to M. R. C. to Lr. Ry. He/Lov.3/A.27. 2. 32. X3933. VISIT TO R.A.E. FARNBOROUGH. On Monday last I visited the R.A.E. Farnborough on the Fairey 3F, accompanied… | ||
| img286 | Carburettor performance, mixture control modifications, and flight test results. | ||
| View original record | -2- Their criticism was that while it was some 20% richer than weakest maintained at full throttle the consumption at throttled loads - over the cruising range - was weaker than weakest maintained and… | ||
| img287 | Automatic boost control and take-off power limitations for a supercharged engine. | ||
| View original record | -3- EB/144.B.R/McD.27.8.32.contd. While on the question of automatic boost control there was one point which we noticed during our journey on the '3F'. Since fitting the full supercharged engine with… | ||
| img288 | Series of graphs showing engine performance and fuel consumption with new type carburettors under different throttle conditions. | ||
| View original record | NEW TYPE CARBS IN "VEE" AT FULL THROTTLE. OPTIMUM POSN OF A.C. 2500 R.P.M. FUEL FLOW. MOVEMENT A.C. THROTTLED TO 2200 R.P.M. FUEL FLOW. MOVT. A.C. THE OPTIMUM POSN DOES NOT COME ON THIS DIAGRAM… | ||