Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Letter to Brooklands Motor Course proposing to bring cars for testing. | ||
| View original record | x) 88. Hs/Rm.8/AD. October 5th, 1931. Percy Bradley Esq. Brooklands Motor Course, Weybridge, Surrey. Dear Sir, We are proposing to bring some cars down to the track on Wednesday next the 7th inst. to… | ||
| scan0002 | From PN to Hs/Rm confirming arrangements for a test of car 25-EX at Brooklands. | ||
| View original record | Y7 88 PN.5/WT6.10.31. S/W. Hs/Rm...from PN. Brooklands Test To-morrow. Replying to Hs/Rm7/AD5.7.21 - 25-EX will be awaiting you to-morrow morning at Brooklands at 10.30. I shall get down there as soon… | ||
| scan0003 | The performance testing of a 27-EX car at Brooklands with non-standard engine modifications. | ||
| View original record | To R. From Hs/Lid. c. Sg. c. WOT. H. c. DR. EY. 1788 X.7120. X.7771. X.788. Hs/Lid.1/ATS.5.10.31. P.II INCREASED PERFORMANCE. BROOKLANDS 5.10.31. 27-EX car was taken to Brooklands track with the idea… | ||
| scan0004 | Performance test report for a 27 Ex car at Brooklands, detailing specifications, lap speeds, and top gear acceleration. | ||
| View original record | 27 Ex CAR. PERFORMANCE TESTS ON BROOKLANDS 5TH OCT. 1931 LeC.2905/6 R.R. TWIN CHOKE CARBURETTER. (MODIFIED TO CURE FLOODING ON CORNERS) WITH AIR SILENCER. (EXPTL.) 114° W.W. CAMSHAFT (E.82448)… | ||
| scan0005 | Graph plotting horsepower against RPM for various engine configurations related to G.F.T. 43. | ||
| View original record | LORD CHOLMONDELEY G.F.T. 43 HS 448 H.P. R.P.M 20.5 M.P.H 41.05 M.P.H. 61 ½ M.P.H. 71.75 M.P.H. LEGEND: G.F.T. 43 AS BELOW WITH STANDARD VALVE SPRINGS G.F.T. 43 AS BELOW BUT WITH 112° CAMSHAFT & EXP.… | ||
| scan0006 | Letter to Brooklands Motor Course requesting track time for car testing and a list of race meetings for the year. | ||
| View original record | x788 Hs/Gry.2/MA. February 29th, 1932. Percy Bradley Esq., Brooklands Motor Course, Weybridge, Surrey. Dear Sir, We wish to bring some cars to Brooklands to test on the track in the near future. We… | ||
| scan0007 | Letter from the Brooklands Automobile Racing Club confirming the track opening date and enclosing a list of race meetings. | ||
| View original record | X788 BROOKLANDS AUTOMOBILE RACING CLUB. TELEPHONE NOS: WEYBRIDGE 1220 (10 LINES). TELEGRAMS: BARKLUB, WEYBRIDGE. BROOKLANDS MOTOR COURSE, WEYBRIDGE, SURREY. 1st March, 1932. Messrs. Rolls-Royce Ltd.,… | ||
| scan0008 | Results of speed tests on the Phantom II engine at Brooklands. | ||
| View original record | 8-88 To R. From Hs. c. to Sg. Mor. c. to E. Da. c. to By. FN. TESTS ON BROOKLANDS. These tests were undertaken in order to see what increase in actual speed we are likely to get if we make use of the… | ||
| scan0009 | Comparison of performance figures from tests on modified Phantom II cars at Brooklands. | ||
| View original record | a. From Hs/Lid. c. to Mr. Tor. c. to L. Ba. c. to Wv. Pn. TESTS ON BROOKLANDS. In connection with improved high speed performance on P.II cars a meeting of the following cars was arranged at… | ||
| scan0010 | Performance increase given by fitting S.U. carburetters, particularly at high speeds. | ||
| View original record | -2- Ha/Lid.R/W.15.1.33.cont'd. The extra performance given by fitted the S.U. carburetters is very noticeable and is clearly indicated in the comparative acceleration curves; the increase in… | ||
| scan0011 | Comparison of flying half-mile and lap speeds for various car configurations tested at Brooklands Track, including car weights. | ||
| View original record | BROOKLANDS TRACK 10.3.32 (1) FLYING HALF MILE SPEEDS 92.8 MPH (87.5) - 27EX. TWIN SU CARBURETTORS, R=5.25:1, 114° CAMSHAFT 87 MPH (83) - 27EX STD R.R. CARBURETTOR, R=5.25:1, 114° CAMSHAFT 87.4 MPH -… | ||
| scan0012 | Graph plotting road speed against time for acceleration tests of the 27EX car at Brooklands. | ||
| View original record | 27EX CAR ACCELERATION 5.75:1 CYLINDER HEAD (E.82758) DOUBLE VALVE SPRINGS (LEC-2993) 114° CAMSHAFT (E.82448) CAR WEIGHT: 5334 lbs 11/41 REAR AXLE 21" TYRES BROOKLANDS 10.3.32 ROAD SPEED (M.P.H.) TIME… | ||
| scan0013 | Test report for car 19-EX, detailing speed trials at Brooklands and a list of modifications compared to the standard model. | ||
| View original record | Copy. To R. From Hs. c.c. to Sg. c.c. to WOr. E. c.c. to By. Da. 19-EX. CAR FOR 10,000 MILES TEST IN FRANCE This car was tested at Brooklands yesterday by Sg., PN., Rn., & Hs. There was a high wind,… | ||
| scan0014 | Continuation of a report detailing changes to chassis, engine, and electrical components, including costs and material specifications. | ||
| View original record | -2- Ms.2/11/22.4.32. 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… | ||
| scan0015 | Trial and implementation of permanent D.W.S. jacks on vehicles. | ||
| View original record | -3- Hs.2/MJ.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 much… | ||
| scan0016 | Maximum speed tests conducted on two Phantom II cars at Brooklands Track. | ||
| View original record | 22/4/32 X788. EP5/H22.4.32. Wos. c. Hs. PN. Sps. Mr. Lillie Hall. Mlr. re. PHANTOM II. MAXIMUM SPEEDS. In view of the controversy re loss in speed in the later type Phantom II. cars, tests were taken… | ||
| scan0017 | Further supply of Brooklands track tickets. | ||
| View original record | x788. To C. From Hs/Rm. Hs/Rm.1/MJ.19.5.32. Will you please forward to us as soon as possible, a further supply of Brooklands track tickets. Hs/Rm. | ||
| scan0018 | Brooklands test results for chassis 19-EX and 27-EX, detailing specifications and performance data. | ||
| View original record | FILES. X788 BROOKLANDS TESTS 23.6.32. 19-EX. 10,000 miles car fitted with 12/41 axle, 19" rims, synchromesh gearbox, W.W. 1140 camshaft, R.R. semi-expanding carburetter and 5.25 c.r. Resonance… | ||
| scan0019 | Summary of results from radiator matrix comparison tests at Brooklands. | ||
| View original record | Copy for Brooklands File. X 788. 84516. Brooklands 29.6.32 The results we have obtained so far show a very big and surprising advantage by using the American Harrison Film radiator matrix; the Marston… | ||
| scan0020 | Comparison of cooling performance between Marston Mark III, Harrison film, and R.R. hexagon radiator matrices under various test conditions. | ||
| View original record | -2- (3) 60 M.P.H. Full bonnet ventilation. Marston Mark III is 6.20°C cooler than R.R. hexagon matrix. Harrison film matrix is 13°C cooler than R.R. hexagon matrix. (4) 60 M.P.H. Full Bonnet… | ||
| scan0021 | Performance test results comparing a Standard Carburetor with an R.R. Semi-expanding Carburetor on a 22-EX model. | ||
| View original record | -3- 22-EX. Standard Carb. Lap Speed Cut out Closed 80.2 M.P.H. " " Open 83.99 M.P.H. ½ Mile " " Closed 79.6 M.P.H. " " Open. 82.57 M.P.H. 22-EX. R.R. Semi-expanding Carb. Lap Speed Cut out Closed. 83… | ||
| scan0022 | Performance test results from Brooklands for an expanding carburettor, including lap speeds and acceleration tests. | ||
| View original record | X788 Morning. Copy for Brooklands File. 22-EX. 13.7.32. X7080 At Brooklands. Air Temp. 22.5 C. Expanding Carb. Cut-out closed Lap. 119 secs 83.70 M.P.H. " " Open Lap. 113 " 88.15 M.P.H. "Repeat" - Cut… | ||
| scan0023 | Acceleration test results with 7x20 tyres under different exhaust cut-out conditions and lapping figures with G.L.N.60. | ||
| View original record | -2- Acceleration tests were carried out with 7 x 20 tyres fitted, we also did a Lap, and half mile, with these tyres on, cut-out closed. 7 x 20" tyres Lap speed CO 122 secs 81.64 M.P.H. 1/2 mile CO… | ||
| scan0024 | Performance test results for vehicle 22-EX at Brooklands, including lap times, acceleration data, and handling notes. | ||
| View original record | Afternoon. 22-EX. 13.7.32. AT BROOKLANDS. Air Temp. 19°C. S.U. Carb. M.P.H. Cut-out closed Lap. 118.4secs 84.13 7 x 21 tyres Cut out open Lap. 110 secs. 90.55 "Repeat" Cut-out open Lap. 119 secs.… | ||
| scan0025 | Performance and acceleration test results for vehicle 22-EX at Brooklands. | ||
| View original record | 22-EX. 14.7.32. At Brooklands. Air Temp. 24°C. Standard Carb. M.P.H. 7 x 21 tyres. Cut-out closed lap. 123 secs 80.98 " " Open Lap. 117.4 " 84.84 " " " Cut-out closed 1/2 mile 22secs 81.92 " " Open… | ||
| scan0026 | Specifications for 22-EX valve timing, clearances, and tyre dimensions. | ||
| View original record | 22-EX Valve Timing. .020" Tappet Clearance. I.O. .35" PTDC 2.6o E.O. 6.75" BBDC 50.2o I.C. 7.2" PBDC 53.6o E.C. 1.25" PTDC 9.4o Inlet valve lift = .451 + .005 clearance Exhaust " " = .450 + .009 " 7 x… | ||
| scan0027 | Car performance tests comparing a semi-expanding carburetter against S.U. and standard carburetters. | ||
| View original record | To R. From Hs/Rm. c. to Sg. Wor. c. to E. Da. c. to Hy. x788 He/Rm.1/WJ.23.7.32. x7080 CAR PERFORMANCE. SEMI EXPANDING CARBURETTER. BROOKLANDS TESTS. We have now completed a series of tests on… | ||
| scan0028 | Results of Brooklands tests on different induction and exhaust systems. | ||
| View original record | -2- BROOKLANDS TESTS. Prior to these tests we took a series of three tests on four types of induction system consisting of open exhaust C.O. open and complete silencer, shewn in curves Rm.P53/54/58.… | ||
| scan0029 | Engine performance improvements and test results, comparing speeds with competitor vehicles. | ||
| View original record | -3- Hs/Rm.1/WJ.23.7.32.Cont'd. of increased power output. It will be noted that under these conditions which is the state in which all except Continental type cars are now run, the difference between… | ||
| scan0030 | Analysis of engine performance comparing 6, 12, and 18-cylinder options, and future development strategy. | ||
| View original record | -4- Hs/Rm.1/MJ.23.7.32. Cont'd. Until we went to the U.S.A. this year, we felt that the big 6 cyl. still had a future against the 12 and 16 cyls. for performance in the large car class. As we pointed… | ||
| scan0031 | Taxation difficulties of 12-cylinder power units and the limited market for the Phantom II model. | ||
| View original record | -5- Hs/Rm.1/MJ.23.7.32. Cont to enable everyone to realise that it is no use quoting such cars against us unless it is felt that we can put up with the taxation difficulties of 12cyl. power units, and… | ||
| scan0032 | Performance data sheet for Dunlop racing tyres, detailing mean lap speeds with various carburettor configurations. | ||
| View original record | DUNLOP RACING TYRES. SHEET (1). 6.75 x 21" Tyres. Rolling Circumference 107" at 50 lbs/sq.in. 22-EX. 11 x 41 Axle. 114° Camshaft. Car Weight 50.5 Cwt. Condition of Car. Mean Lap Speed. C.O. Open. C.O.… | ||
| scan0033 | Comparison of mean lap speeds for different carburettor configurations on a car with standard tyres. | ||
| View original record | STANDARD TYRES. SHEET (2). 7" x 20" ROLLING CIRCUMFERENCE 104.25" at 50 lbs/sq.in. 22-EX. 11 x 41 Axle. 114º Camshaft. Car Weight 50.5 cwt. Condition of Car. Mean Lap Speed. C.O. Open. C.O. Closed.… | ||
| scan0034 | Graph comparing the acceleration performance of the 22 Ex and 25 Ex models. | ||
| View original record | ACCELERATION. 22 EX. AND 25 EX. ACCEL: FT/SEC./SEC. SPEED - M.P.H. 22 EX. (50 1/4 CWT) SEMI EXP CARB, 114° E.82448 CAMSHAFT 5.25 C/R 11/41 AXLE 25 EX (48 3/4 CWT) STD. CARB. STD. CAMSHAFT 5.00 C/R… | ||
| scan0035 | Graph showing the effect of different carburettor needles on vehicle acceleration versus speed. | ||
| View original record | ACCELERATION - 19 - Ex EFFECT OF CARBURETTOR NEEDLE SEMI EXP: CARB: LE C.2972 --- 90° NEEDLE - x - 85° NEEDLE - o - 95° NEEDLE 12/41 AXLE 18" RIMS (1.07 OF STD) 5.25 C/R SEMI EXP CARB. 114° CAMSHAFT… | ||
| scan0036 | Graph comparing power output with a 5.25 compression ratio using various carburettor and intake setups. | ||
| View original record | COMPARISON OF POWER OUTPUT WITH 5.25 COMP. RATIO RM.P.53 114° CAMSHAFT (E.82448) (LONG TYPE SILENCER - CUT OUT OPEN) (DOUBLE VALVE SPRINGS) (STANDARD ROCKERS) ① STANDARD P.T CARBURETTER AND INTAKE… | ||
| scan0037 | Graph comparing power output with a 5.25 compression ratio using various carburetor and intake setups. | ||
| View original record | COMPARISON OF POWER OUTPUT WITH 5.25 COMP RATIO R.M.P. 54 1 1/4" CAMSHAFT (E. 82448) (LONG TYPE SILENCER COMPLETE) (DOUBLE VALVE SPRINGS) (STANDARD ROCKERS) ① STANDARD P II CARBS & INTAKE SILENCER ②… | ||
| scan0038 | Graph comparing engine power output with various carburettors and air silencer setups. | ||
| View original record | COMPARISON OF POWER OUTPUT., RM P 58., VARIOUS CARBS. OPEN EXHAUST., 114° CAMSHAFT E.82448 DOUBLE VALVE SPRINGS., 5.25 C.R., B.H.P., 180, 170, 160, 150, 140, 130, 120, 110, 100, R.P.M., 500, 1000,… | ||
| scan0039 | Track tests at Brooklands detailing specifications and maximum speeds for various car models. | ||
| View original record | 88 To R. From Ha/Rm. c. to JS. Vor. c. to E. By. c. to IN. Da. Ha/Rm.5/MJ.28.7.32. BROOKLANDS TESTS 26.7.32. PRESENT - Sg. Ph. Bn. Rm. Tests were carried out on the Track on the following cars -… | ||
| scan0040 | Report comparing the maximum speeds and acceleration tests of various car models. | ||
| View original record | -2- Hs/Rm.5/WJ.28.7.32.Cont'd. Maximum Speeds Contd. Car. Lap Speed M.P.H. Continental P.11 75.2 27-H.X. Body. 75.34 19-G4 Limousine. 79.68 J.1 Head. 80.72 We could not run the Continental P.11 C.O.… | ||
| scan0041 | Summary of conclusions from tests regarding improvements for the Standard Phantom, Peregrine, and a future car specification. | ||
| View original record | -3- Hs/Rm.5/WJ.28.7.32.Cont'd. CONCLUSIONS. (1) That the improvements on 19-EX. now completing 10,000 miles are badly needed for the Standard Phantom. (2) That Peregrine is going to make owners… | ||
| scan0042 | Brooklands track test comparisons between 'China' and 'Japan' cylinder heads. | ||
| View original record | 8788 To R. From Hs/Bn. c. to MS. Wor. c. to E. RY. c. to Hdy. PH. BROOKLANDS TESTS. Further to Hs/Bn.5/MJ.29.7.32. in which track comparisons were made between 'China' and 'Japan' cylinder heads. We… | ||
| scan0043 | Performance comparison graph from Brooklands tests, showing B.HP and B.M.E.P against R.P.M. for two car configurations. | ||
| View original record | BROOKLANDS TESTS JULY 26TH / 32 RM. 71 ① 19.G.IV J1. HEAD 6.3:1 C/R. 2 S.U. CARBS. E.57177 (110 5°) CAMSHAFT. NO FRONT EXPANSION BOX. RESONANCE SILENCER. ② U SERIES 20/25 TRIALS CAR FRONT EXPANSION… | ||
| scan0044 | Track tests comparing an Alfa-Romeo's performance with Rolls-Royce models. | ||
| View original record | To R. from Hs/Tm. C. Sg. HOF. C. E. PH. C. Ds. Hy. C. Hdv. (W.R.) X788 V-183 Hs/Tm.11/AM.6.8.32. Tests have now been carried out on the Alfa-Romeo on the track. The following lap speeds were obtained… | ||
| scan0045 | Performance test results for an Alfa Romeo at Brooklands, including lap times, speeds, and speedometer accuracy. | ||
| View original record | File Under Brooklands Tests. X)88 Hs/To/Rm. from F. Dodd. 16.8.32. X4682 ALFA ROMEO AT BROOKLANDS. 15.8.32. Lap speed & time..... 2 mins 4.2 secs = 80.20 mph. " 2 mins 4.4 secs = 80.07 mph. Windscreen… | ||
| scan0046 | Performance report of an Alfa Romeo at the Brooklands circuit, detailing lap times, speeds and a speedometer accuracy check. | ||
| View original record | Brooklands. File To HS/Rn. from F. Dodd. X788 16.8.32. X4482 ALFA ROMEO AT BROOKLANDS. 15.8.32. Lap speed & time..... 2 mins 4.2 secs = 80.20 mph. " 2 mins 4.4 secs = 80.07 mph. Windscreen down "… | ||
| scan0047 | Request for a further supply of 50 Brooklands Track Tickets. | ||
| View original record | X) 88 To C. From Hs/Rm. Hs/Rm.4/MJ.17.9.32. Will you please forward to us as soon as possible a further supply of 50 Brooklands Track Tickets. Hs/Rm. | ||
| scan0048 | Letter to Mr. Percy Bradley at Brooklands Track regarding the dispatch of tickets. | ||
| View original record | x788. Hs/Rn.10/KT. Sept.17th.1932. Mr. Percy Bradley, Clerk of the Course, Brooklands Track, Weybridge. Dear Sir, We send you herewith two Brooklands Track ticketss We were without tickets when we… | ||
| scan0049 | Letter to the Clerk of the Course at Brooklands Track enclosing a ticket. | ||
| View original record | 8788. Hs/Rm.11/KT. Sept. 20th 1932. Mr. Percy Bradley, Clerk of the Course, Brooklands Track, Weybridge. Dear Sir, With reference to our letter of Sept. 17th, we enclose herewith one Brooklands Track… | ||
| scan0050 | Letter from Brooklands Automobile Racing Club regarding track tickets. | ||
| View original record | x788. BROOKLANDS AUTOMOBILE RACING CLUB. TELEPHONE N.O: WEYBRIDGE 1220 (10 LINES). TELEGRAMS: BARKLUB, WEYBRIDGE. BROOKLANDS MOTOR COURSE, WEYBRIDGE, SURREY. 20th September, 1932. [STAMP: RECEIVED 21… | ||
| scan0051 | Test report detailing car performance trials conducted at Brooklands. | ||
| View original record | X788 To R. from Hs/Rn. c. S.S. for. c. E. Da. c. Hdy. FN. Hs/Rn.S/KT.21.9.32. BROOKLANDS TESTS. X7120. X X40-7. On Wednesday the 14th inst. some tests were carried out on various expl. cars on… | ||
| scan0052 | Letter to the Clerk of the Course at Brooklands requesting to use the track for tests while it is closed for repairs. | ||
| View original record | 87 88 . Expl. Dept. Hs/Lid.S/MA. December 9th., 1932. Clerk of the Course, Brooklands Racing Track, Weybridge, SURREY. Dear Sir, In about three weeks from now we shall be in a position to carry out a… | ||
| scan0053 | Letter from the Brooklands Automobile Racing Club concerning the progress of track repairs and circuit availability. | ||
| View original record | LID 8788. BROOKLANDS AUTOMOBILE RACING CLUB. TELEPHONE Nºs WEYBRIDGE 1220 (10 LINES). TELEGRAMS: BARKLUB,WEYBRIDGE. LID BROOKLANDS MOTOR COURSE, WEYBRIDGE, SURREY. 10th December, 1932. Messrs.… | ||
| scan0054 | Letter to the Clerk of the Course at Brooklands Motor Course regarding arranging a clear passage around the track. | ||
| View original record | 88 Expl. Dept. Hs/Lid.10/MA. 12th., December 1932. The Clerk of the Course, Brooklands Motor Course, Weybridge, Surrey. Dear Sir, We beg to thank you for your letter of the 10th., inst., and note with… | ||
| scan0055 | Request from the Sales Department for acceleration tests to be performed on the Phantom II Continental chassis. | ||
| View original record | X 788 Hs. RECEIVED BY/Cgh.9/G. 26.1.33. PHANTOM 11. ACCELERATION CURVE. ----------------------------- Sales Department (Cx.) are asking for acceleration curves for the latest Continental Phantom 11.… | ||
| scan0056 | Letter to Mr. Percy Bradley at Brooklands Motor Track regarding track availability for car testing. | ||
| View original record | X788 Hs/Rn.18/KT. January 30th 1933. Mr.Percy Bradley, Brooklands Motor Track, Weybridge, Surrey. Dear Mr.Bradley, We hope to be down on the track on Thursday or Friday of this week with a car. We… | ||
| scan0057 | Letter from Brooklands Automobile Racing Club confirming the outside circuit is clear for use. | ||
| View original record | x788. BROOKLANDS AUTOMOBILE RACING CLUB. TELEPHONE Nos WEYBRIDGE 1220 (10 Lines) TELEGRAMS: BARKLUB, WEYBRIDGE. BROOKLANDS MOTOR COURSE, WEYBRIDGE, SURREY. 31st January, 1933. Messrs. Rolls-Royce… | ||
| scan0058 | Performance test data from Brooklands Track for a Bensport Chassis F.B III, showing acceleration and speed tests. | ||
| View original record | BENSPORT CHASSIS F.B III BROOKLANDS TRACK 2.2.33 10/41 REAR AXLE 18x5.50 TYRES CAR WEIGHT COMPLETE - 30 1/2 CWT. ACCELERATION COMPLETE CAR ROAD SPEED (M.P.H) TIME (SECS) TOP GEAR 3RD GEAR USING GEARS… | ||
| scan0059 | Results of a vehicle test on the Brooklands track. | ||
| View original record | X) 88 To R. from Hs/Rn. c. SS. Wor. c. E. Da. c. By. Hdy. Hs/Rn. 7/ATT.5.2.33. X) 53 BENTSPORT. BROOKLANDS TEST. We had this car on the track on the 2nd. inst. The weather was excellent. In the… | ||
| scan0060 | Oil leaks from the clutch pit and a comparison of exhaust system losses with earlier tuning. | ||
| View original record | -2- There are bad oil leaks from the clutch pit (rear main bearing) and various other points on the unit, due, we think, partially to the absence of the carburetter air intake connection to the… | ||
| scan0061 | Steering characteristics and pivot inclination tests for a new axle. | ||
| View original record | COPY. To R. from Hs/Rm. c. BJ. Wor. c. By. Rg. c. K. Da. c. OY. Hs/Rml/T22.9.26. EAC.VIII. STEERING: PIVOT INCLINATION. The new axle gives remarkably light steering. While we expected the steering to… | ||
| scan0062 | Report page discussing steering tests on an altered standard axle, with an attached blueprint sketch of transversally raked pivots. | ||
| View original record | -2- Hs/RM/T22.9.26. The most interesting test was that carried out with a standard axle altered to give vertical king pins (5). In this case with a disc wheel giving centre point steering, the… | ||
| scan0063 | Tests on the effect of transverse rake and pivot inclination on steering effort for a 20 HP axle. | ||
| View original record | -3- Hs/Rml/T22.9.26. shocks, and yet not make the steering appreciably heavier. Normally, if we move the wheel centre 3¼" from the king pin the effort required to shunt the car becomes impossible. To… | ||
| scan0064 | Comparing the effect of transverse pivot inclination on steering effort for different axle types. | ||
| View original record | Attached to - TRANSVERSE PIVOT INCLINATION OVERALL STEERING EFFICIENCY ASSUMED AS 60% WHEN CALCULATING LOADS ON THE STEERING WHEEL RIM PIVOT ASSUMED VERTICAL IN LONGITUDINAL ELEVATION TO SIMPLIFY… | ||
| scan0065 | Comparison of five different axle and pivot configurations, ordered by steering heaviness. | ||
| View original record | E.A.C. V SERIES. SILVER GHOST T SERIES EXPT AXLE WITH WIRE WHEELS V SERIES PIVOTS NEW AXLE NEW PIVOTS C2 SERIES EXPT AXLE WITH DISC WHEELS V SERIES PIVOTS 1) 6° .616 2) 5° .554 3) VERT 3.5" 4) 2.5°… | ||
| scan0066 | Performance curves for a Bensport J.I. Unit C.9 engine, testing various exhaust system modifications. | ||
| View original record | BENSPORT J.I. UNIT C.9 RM.B2 COMP.RATIO 6:3:1. CYL. HEAD STANDARD E.56604. CAMSHAFT E.59139 (113 1/2°) 2 - 1.375" S.U. CARBS: ON SPECIAL PIPE BETWEEN CYLS: 1&2. 5&6. BALANCED WITH SPECIAL 1.000"… | ||
| scan0067 | Performance graph showing BHP and BMEP against RPM for a specific engine configuration with two different timing settings. | ||
| View original record | UNIT C.9 J1 HEAD BENSPORT J1. C.9 RM 83 JAN. 28/33 COMP. RATIO 6.3:1. CAMSHAFT E.59139 (13 1/2°) CYL HEAD: STANDARD E 56604. 2 1.375 SU CARBS ON SPECIAL PIPE BETWEEN 1 & 2 5 & 6 CYLS. BALANCED WITH… | ||
| scan0068 | High-speed performance testing of two Continental Phantom II cars at Brooklands track. | ||
| View original record | X768 R. from Hs/Lid. c. Sg. Wor. c. E.E. Ba. c. Dy. Hs/Lid.1/KT.3.3.33. CONTINENTAL PHANTOM - HIGH SPEED PERFORMANCE. We have had an opportunity of testing two production Phantom II cars on Brooklands… | ||
| scan0069 | The speed and acceleration trials for Chassis No. 20 MY at Brooklands. | ||
| View original record | X788 LE2/G/3.3.33. O.K. [stamped and crossed out] Copy to Mr. [illegible] Copy to [illegible] Copy to Hs/Rm. Re Chassis No. 20 MY. Trials. I took this car down to Brooklands and with two passengers… | ||
| scan0070 | Arranging a car test at Brooklands to compare a 4-litre Delage or an Essex Terraplane with a Bentley. | ||
| View original record | X788 W/S. To Bn. from Hs/Rm. Hs/Rm.11/KT.17.3.33. We shall be at Brooklands on Tuesday of next week, and wonder whether you could possibly get hold of one of the new 4 litre Delage cars for us to… | ||
| scan0071 | Meeting at Brooklands to test competitor cars including Talbot, Bugatti, and Alfa Romeo. | ||
| View original record | K788 Rm Hs. ... from Bt. Bt4/AL.5.4.33. Dear Hs., I had an opportunity of speaking to my brother regarding the possibility of a meeting at Brooklands. He is going down to the Monte Carlo race, and… | ||
| scan0072 | Meeting at Brooklands to test cars, mentioning an Alfa Romeo and whether to show a Bentley to Mr. Lionel Martin. | ||
| View original record | x788 Bt. from Hs/Rm. Hs/Rm.2/KT.12.4.33. Thank you for your Bt4/AL.5.4.33. It would certainly be interesting to try the cars you mention at Brooklands, and we will let you know when we will be ready… | ||
| scan0073 | Letter to Brooklands Track regarding two track tickets. | ||
| View original record | 7788 Hs/Rm.9/KT. April 12th 1933. Mr. Percy Bradley, Clerk of the Course, Brooklands Track, Weybridge. Dear Sir, Herewith two Brooklands track tickets which apply to two cars which were brought on the… | ||
| scan0074 | Meeting at Brooklands, the Monte Carlo Races, and the potential production of a 2.3 litre sports car similar to an Alfa Romeo. | ||
| View original record | Rm .. from Bt. x788 Rm Bt9/AL.20.4.33. Thank you for your Hs/Rm.2/KT.12.4.33. I met my brother at Brooklands on Monday. He was just starting for the Monte Carlo Races but said he would be back about… | ||
| scan0075 | Arranging a car meeting at Brooklands and expressing interest in a Speed 20 Alvis. | ||
| View original record | x788 Bt. from Hs/Rm. Hs/Rm.1/KT. 21.4.33. Many thanks for Bt9/AL. 20.4.33. We will arrange to have a car ready to meet you at Brooklands any time during the first week in May, and should be glad if… | ||
| scan0076 | Car testing at Brooklands, detailing performance times and engine component failures due to oil shortage. | ||
| View original record | x788 To Rn. from Hs/Wynn. C. E. Ltd. Hs/Wynn. 9/KT. 27.4.33. RE. VISIT TO BROOKLANDS WITH 1.J.III. The above car was taken down to Brooklands track yesterday for a series of tests, but unfortunately… | ||
| scan0077 | Required modifications to the oil feed system for rocker shafts and an issue with a water drain tap. | ||
| View original record | -2- Hs/Wymn.9/KT.27.4.33. Nos. 3, 4, 5 & 6, being OK., and so, as the oil feed is situated in the centre of the cylinder head, it appears that we require a greater pressure of oil in the rocker shaft… | ||
| scan0078 | Correspondence regarding the postponement of a trial at Brooklands due to practice for the International Trophy Race. | ||
| View original record | Hs - Rm. X788 Bt7/AL.1.5.33. Further to our recent correspondence re trial at Brooklands, I have been in touch with my brother who recommends that we should not have any trial this week as the course… | ||
| scan0079 | Confirming a meeting for Friday the 12th at 11 a.m. on the track and returning an attached letter. | ||
| View original record | K788 Bt. from Hs/Rm. Hs/Rm.2/KT.2.5.33. Many thanks for your Bt7/AL.1.5.33. We think that Friday the 12th. will be the most suitable day for us. We could be down on the track at 11 a.m. We are… | ||
| scan0080 | Arranging a meeting to inspect various competitor cars including Alfa, Bugatti, Talbot, and Alvis. | ||
| View original record | S/W Hs/Rm. Re: Your Hs/Rm.2/KT.2.5.33 X788. Bt2/AL.4.5.33. Thank you for your memo as above. I have written to Capt. Eric Burt, suggesting meeting at 11.0 on Friday 12th. Provided that none of them… | ||
| scan0081 | Short typed memo confirming a rendezvous time and date. | ||
| View original record | Bt. from Hs/Rm. x788 Hs/Rm.8/KT.5.5.33. Many thanks for your Bt2/AL.4.5.33. We will make the rendevous at 11.0 a.m. on Friday the 12th. unless we hear from you to the contrary. Hs/Rm. | ||
| scan0082 | Brooklands test results comparing two Bentley cars against a Talbot and an Alvis for speed and acceleration. | ||
| View original record | Files. ----- x/88 16.5.33. BROOKLANDS TEST. On Friday May 12th, the two Bentley cars, B.1. and B.2. were taken down to the track for comparison with other cars, with regard to maximum speed and… | ||
| scan0083 | Speed tests for Chassis 2.B.IV on the Brooklands track with various engine and body configurations. | ||
| View original record | FILES ONLY. X488 To Sg. from Hs/Lid. c. to Wor. c. to E. c. to Da. c. to By. Hs/Lid.1/KT.17.5.33. CHASSIS 2.B.IV. ON BROOKLANDS TRACK. We have taken the second Bentley car to Brooklands to test out… | ||
| scan0084 | Acceleration tests comparing single and double hot spot feeds to address 'flat spot' issues, with notes on air silencer and wing design. | ||
| View original record | -2- Hs/Lid.1/KT.17.5.33. With regard to the air silencer loss of 1.05 m.p.h., the final air silencer to be fitted for production will not absorb any power, and this loss therefore will not occur. The… | ||
| scan0085 | Test report detailing engine oil loss, cooling, steering performance, and petrol consumption tests. | ||
| View original record | -3- Hs/Lid.1/KT.17.5.33. The major trouble experienced on the track was loss of engine oil through the rear bearing into the clutch pit. This is very bad, and is not improved by fitting the Peregrine… | ||
| scan0086 | Performance test results for Bentley Chassis 2.B.IV at Brooklands track, including speed, acceleration, and notes on wing design and an oil leak. | ||
| View original record | x/788. To Sg. from Hs/Lid. c. to Wor. c. to E. c. to Da. c. to By. Hs/Lid.5/KT.18.5.33. CHASSIS 2.B.IV. ON BROOKLANDS TRACK. The second Bentley car was taken to Brooklands for various comparative… | ||
| scan0087 | Test report on clutch ventilation, cooling, steering, engine performance, and fuel consumption. | ||
| View original record | -2- Hs/Lid.5/KT.18.5.33. fitting the Peregrine type of clutch pit ventilation. This point is being investigated. The water temperature on the track never exceeded 80°C; the car was fitted with a 58… | ||
| scan0088 | Brooklands test results comparing J.3. and S.U. carburettors, and water versus air oil coolers. | ||
| View original record | Files. X988 23.5.33. ---- BROOKLANDS TESTS. ---- 3.Per.II. & 4.Per.II. Tests of relative merits of J.3. carb. against 2 S.U. carburetters and also of water oil cooler against air oil cooler. Tests.… | ||
| scan0089 | Performance comparison notes from two acceleration tests between cars. | ||
| View original record | -2- Starting both cars level at 10 m.p.h., top gear, 3.Per.II. S.U. carvs. gains about 2 lengths by 40, 5 by 50, and about 150 yards by max. speed. Starting level at 50 m.p.h. 3.Per.II. gets over 100… | ||
| scan0090 | Lap speed and time test results from Brooklands with different equipment setups. | ||
| View original record | Files. x788 Hd. 1.6.33. 3.B.IV. - BROOKLANDS. R.R.Petrol Pump. Air Silencer fitted. Axle ratio 10 x 41. 83. M.P.H. at 4000 R.P.M. Lap Speeds & Times. Cut out closed 1 - 57.6 secs. 84.70 M.P.H. 1 - 56… | ||
| scan0091 | Performance test results for three Bentley cars at Brooklands track. | ||
| View original record | x784 To SG. from Hs/Ru. c. to Wor. c. to E. c. to Ey. c. to Da. c. to Hdy. HS/Ru.4/KT.3.6.33. BENTLEY. BROOKLANDS TESTS. We have now the average of three Bentley cars on Brooklands track. BENTLEY… | ||
| scan0092 | Testing of a new cut-out and petrol pump performance. | ||
| View original record | -2- Hs/Rn.4/KT.5.6.35. We have yet to check the efficiency of the new cut-out on the test bed. On our last run on the track we proved that the R.R. petrol pump with the 4.2 lbs/sq.in. delivery… | ||
| scan0093 | To the Accounts Department regarding unpaid petrol bills for work done at Brooklands track. | ||
| View original record | r 788 A/C's Dept. Hs/Rm.2/KT.13.6.33. Herewith petrol bills for work done on Brooklands track. These have not yet been paid. Hs/Rm. | ||
| scan0094 | Arranging for axle ratio testing of two Bentley cars at the Brooklands track. | ||
| View original record | X788 To RHC. from Hs/Rn. Hs/Rn.4/KT.19.6.33. AXLE RATIOS - BROOKLANDS TEST. We are sending Bentley 2. and Bentley 3. down to the track tomorrow Tuesday the 20th, and they will return in the evening… | ||
| scan0095 | Letter to the Clerk of the Course at Brooklands Track regarding a track ticket. | ||
| View original record | x788 Hs/Rm.3/KT. June 21st 1933. Mr.Percey Bradley, Clerk of the Course, Brooklands Track, Weybridge. Dear Sir, Herewith one Brooklands track ticket which applies to our visit to the track today.… | ||
| scan0096 | Test report on Bentley cars at Brooklands track, investigating the effects of axle ratios, wings, and exhaust systems on performance. | ||
| View original record | X788 To Sg. from Hs/Lid. c. Wor. E. c. Da. BY. c. EV. Hs/Lid.1/KT. 23.6.33. BENTLEY - TESTS ON BROOKLANDS TRACK. Axle Ratio. We have carried out tests on Brooklands using 2.B.IV. and 3.B.IV. to… | ||
| scan0097 | Summary of comparative tests on car components and their effect on performance, with no mechanical troubles experienced. | ||
| View original record | (2) Hs/Lid.1/KT.23.6.33. | Car. | Cut-out closed. | Cut-out open. | Increase. | |---------|-----------------|---------------|-----------| | 2.B.IV. | 82.59 | 83.84 | 1.25 | | 3.B.IV. | 85.13 | 86.32 |… | ||
| scan0098 | Performance graph plotting BHP at the road wheels against engine RPM for a Bentley chassis, including component and timing specifications. | ||
| View original record | BENTLEY CHASSIS - 3 B N (UNIT B N°2) GEAR BOX TO N. SCH. 3658 10/41 REAR AXLE IGNITION SETTING 18° B.T.D.C (LEC 3522) EXHAUST CUT OUT (LEC 8441) OPEN SPEEDS UP TO & INCLUDING 2500 R.P.M IN TOP GEAR… | ||
| scan0099 | Blueprint detailing an engine performance graph and specifications for a Bentley 4-B IV chassis. | ||
| View original record | BENTLEY CHASSIS - 4 - B IV (UNIT B. N°3) GEAR BOX TO N. SCH. 3658 11/41 REAR AXLE IGNITION SETTING 13° B.T.D.C (LEC. 3522) EXHAUST CUT OUT (LEC 3441) OPEN SPEEDS UP TO & INCLUDING 2500 R.P.M IN TOP… | ||
| scan0100 | Performance graph and specification sheet for Bentley Chassis 2-B.N. | ||
| View original record | BENTLEY CHASSIS 2-B.N. (UNIT B No 1) GEAR BOX TO N.SCH 3658 10/41 REAR AXLE IGNITION SETTING 13° B.T.D.C EXHAUST CUT OUT (LEC 3441) OPEN SPEEDS UP TO INCLUDING 2500 R.P.M IN TOP GEAR 3000 R.P.M. IN… | ||
| scan0101 | Arranging a meeting and bypass road tests for a Bentley at Brooklands. | ||
| View original record | S/W Hs..from C x788 C17/C28.6.33 Re Meeting re Bentley on Friday -------- PN., On discussing this matter with we have come to the conclusion that it would probably save your time and ours, if you went… | ||
| scan0102 | Short typed memo arranging a meeting at Brooklands with Bentley cars. | ||
| View original record | PER BAG. 8/788 To C. From Hs. Hs.1/MJ. 29.6.33. We will arrange to meet you with the Bentley cars at one o'clock at Brooklands on Friday. Hs. | ||
| scan0103 | Maximum speed tests of 3.5 Litre Bentley cars at Brooklands Track. | ||
| View original record | To Sg. from Hs/Lid. c. Wor. E. c. Da. Hy. c. EV. EP Hs/Lid.3/KT.4.7.33. 3.5 LITRE BENTLEY - BROOKLANDS TRACK. We have tested three Bentley cars (viz. 2.B.IV., 3.B.IV., and 4.B.IV.) for maximum speed… | ||
| scan0104 | Maximum speed tests and speedometer accuracy checks for several cars. | ||
| View original record | -2- Hs/Lid.3/KT.4.7.33. On the road between Weedon and Towcester, the following maximum speeds were recorded on the speedometer :- 2.B.IV. - 98.5 m.p.h. 3.B.IV. - 99.0 m.p.h. 4.B.IV. - 100.0 m.p.h.… | ||
| scan0105 | Test report on a Bentley petrol feed system conducted at Brooklands. | ||
| View original record | To Wor. from Hs/Lid. c.c. C. E. c.c. Ev. EJ. c.c. Hx. BENTLEY - PETROL FEED. We have tested chassis 4.B.IV. on Brooklands fitted up with the petrol feed system which will be used on the first fifteen… | ||
| scan0106 | The Brooklands track test of a 3½ Litre Bentley, chassis B-15-AE. | ||
| View original record | .x788. Hs/Rm EP12/MH.29.9.33 re 3½ LITRE BENTLEYS - BROOKLANDS TRACK TEST- B-15-AE We have tested the first of the 15 chassis for demonstration and show purposes, i.e. B-15-AE, fitted with Park Ward… | ||
| scan0107 | Letter from the Experimental Department to the Clerk of the Course at Brooklands Track regarding testing availability. | ||
| View original record | x788 Experimental Dept. Hs/Rm.13/KT. October 20th 1933. Mr.Percey Bradley, Clerk of the Course, Brooklands Track, Weybridge, Surrey. Dear Sir, We are proposing to run some tests on the track next… | ||
| scan0108 | Confirming the specification of a B.6 unit for a Brooklands test car, 1.B.IV. | ||
| View original record | x788 To RHC. from Hs/Rm. Hs/Rm.3/KT.21.10.33. UNIT FOR BROOKLANDS TEST. - 1.B.IV. CAR This is to confirm that we are using B.6. unit for this test. It will be fitted with pistons as used on the first… | ||
| scan0109 | Letter from Brooklands Automobile Racing Club confirming the track will remain open until November 4th. | ||
| View original record | x788. BROOKLANDS AUTOMOBILE RACING CLUB. TELEPHONE NOS: WEYBRIDGE 1220 (10 LINES). TELEGRAMS: BARKLUB,WEYBRIDGE. BROOKLANDS MOTOR COURSE, WEYBRIDGE, SURREY. 21st October, 1933. Messrs. Rolls-Royce… | ||
| scan0110 | Car's performance test, including mileage, consumption, and lap speeds. | ||
| View original record | COPY. x788 To Hs. Hand & Spear Hotel Weybridge, 24.10.33. The car has run very well during the day's mileage. We stayed last night at Watford held up by fog. The total mileage since leaving Derby is… | ||
| scan0111 | Vehicle road test, detailing issues with valve clearance, engine performance data, oil temperatures and a leak from the rocker cover joint. | ||
| View original record | COPY. X7CC To Hs. Weybridge. 25.10.33. The trouble with the valve clearance I spoke to you about this morning was evidently due to sticking when cold. It has not given any further trouble during the… | ||
| scan0112 | Dispatch of short and long reach spark plugs for testing and enclosing track tickets. | ||
| View original record | A788 Mr. G. W. Hancock, R.R. Representative, Brooklands Track, Weybridge, Surrey. To Hs/GWH. from Hs/Rm. Hs/Rm.4/KT.25.10.33. We are sending you the needles and plugs as requested. The Lodge plugs are… | ||
| scan0113 | Despatch of sparking plugs and carburetter needles for testing at Brooklands Track. | ||
| View original record | x768. To G/Mt. from Hs/Rm. c. to D/BP. Hs/Rm.3/KT.25.10.33. We are sending into the stores for despatch to Mr. G. W. Hancock, R.R. Representative, Brooklands Track, Weybridge, Surrey, 8 sparking plugs… | ||
| scan0114 | Letter to Brooklands Motor Course requesting to run endurance tests on the track. | ||
| View original record | 8748 Experimental Dept. Hs/Rm.4/KT. Oct. 26th 1933. Mr. Percy Bradley, Clerk of the Course, Brooklands Motor Course, Weybridge, Surrey. Dear Sir, We thank you for your letter of Oct 21st. We are… | ||
| scan0115 | Reproduced piston failure on a 3 1/2 Litre Bentley during testing at Brooklands. | ||
| View original record | To Wcr. From Hs. c. to D. c. to E. c. to By. c. to Rn. Re. 3 1/2 Litre Bentley Piston Failures. We have just received a telephone message from Hancock that he has reproduced the piston failure on the… | ||
| scan0116 | Letter from Brooklands Automobile Racing Club regarding track availability for testing. | ||
| View original record | X788. BROOKLANDS AUTOMOBILE RACING CLUB. TELEPHONE NọS: WEYBRIDGE 1220 (10 LINES). TELEGRAMS: BARKLUB, WEYBRIDGE. BROOKLANDS MOTOR COURSE, WEYBRIDGE, SURREY. 27th October, 1933. Messrs. Rolls-Royce… | ||
| scan0117 | Cause of piston failures in a 3 1/2 Litre Bentley engine, attributing it to an exhaust valve. | ||
| View original record | x781 To Wcr. From Hs. c. to C. c. to E. c. to Hy. c. to En. c. to EP. c. to Mx. Hs.1/WJ.28.10.33. V236 Re. 3 1/2 Litre Bentley Piston Failures. We have now had a chance of examining the engine which… | ||
| scan0118 | Car's performance test, detailing consumption figures, engine smoothness and future test plans. | ||
| View original record | COPY. To Hs. Weybridge. 30.10.33. 4.B.IV. We ran the car steady for 100 miles before opening full out. There was no sign of any seizure of the pistons. We started our mileage on the track at 2 o'clock… | ||
| scan0119 | Letter from Brooklands Automobile Racing Club regarding an employee's membership application. | ||
| View original record | X788 BROOKLANDS AUTOMOBILE RACING CLUB. TELEPHONE Nº: WEYBRIDGE 1220 (10 LINES). TELEGRAMS: BARKLUB,WEYBRIDGE. BROOKLANDS MOTOR COURSE, WEYBRIDGE, SURREY. 31st October, 1933. Messrs. Rolls-Royce Ltd.,… | ||
| scan0120 | The particulars of membership for the Brooklands Automobile Racing Club. | ||
| View original record | THE BROOKLANDS AUTOMOBILE RACING CLUB, BROOKLANDS MOTOR COURSE, WEYBRIDGE, SURREY. TELEPHONE: WEYBRIDGE 1220 (10 LINES). TELEGRAMS: "BARKLUB, WEYBRIDGE." PARTICULARS OF MEMBERSHIP. The annual… | ||
| scan0121 | Typed report on vehicle mileage and performance testing on both road and track. | ||
| View original record | COPY To Hs. Weybridge. 31.10.33. As reported yesterday the track was not available until noon today. We therefore ran mileage on the road during the morning. The engine is running smoother and… | ||
| scan0122 | Vehicle's road and track test, detailing performance, mechanical failures, and observations. | ||
| View original record | To Hs. Weybridge 1.11.33. 4.B.IV. We ran the car on the road from 5 o'clock to 8 o'clock covering a mileage of 135 at an average speed of 43.7 m.p.h. The car then proceeded to the track and ran the… | ||
| scan0123 | Speed test results for a streamlined car at Brooklands and on the Towcester Road. | ||
| View original record | FOR FILING 7/88 4.11.33. Brooklands Tests 4.11.33 - B-23-AE. On the Towcester Road with the Streamlined car a true speed of 103 M.P.H. was attained. On the track the following speeds were obtained :-… | ||
| scan0124 | Performance review of a 100 M.P.H. streamlined Bentley car after road and track testing. | ||
| View original record | To Sec. from Mr/Ms. C.C. C. Nor. T.C. Dv. E.S. RM E.V. HS 2768. EB/Rm.14/RT.6.11.33. 100 M.P.H. STREAMLINED BENTLEY CAR. We took this car to Brooklands Track on Saturday. On the way down on a… | ||
| scan0125 | Positive results from wind tunnel tests on a streamlined Bentley car. | ||
| View original record | To HS. From HS. c. to Her. c. to C. c. to P. c. to Ds. c. to EV. c. to Rn. STREAMLINED BENTLEY CAR. We think the results obtained on the Streamlined Bentley justify the wind tunnel tests and show that… | ||
| scan0126 | Performance results of the 100 m.p.h. Bentley Streamline Car and potential body improvements. | ||
| View original record | S/W...Hs/Rm. c. to Sg. Wor. R. HY. PN. Bn. Ev. x788. C4/C7.11.33 Re 100 m.p.h.Bentley Streamline Car. Hs/Rm14/KT6.11.33 I am very interested to note the extremely satisfactory results you have… | ||
| scan0127 | Letter to the Clerk of the Course at Brooklands Track inquiring about the availability of the outside circuit for tests. | ||
| View original record | X788 Expl. Dept. Hs/Gry.7/MJ. 9th. March, 1934. Mr. Percy Bradley, Clerk of the Course, Brooklands Track, Weybridge. Dear Sir, Will you please let us know whether the outside circuit will be available… | ||
| scan0128 | Letter from Brooklands Automobile Racing Club confirming the availability of the outside circuit for testing. | ||
| View original record | X788 BROOKLANDS AUTOMOBILE RACING CLUB. TELEPHONE Nos: WEYBRIDGE 1220 (10 LINES). TELEGRAMS: BARKLUB,WEYBRIDGE. BROOKLANDS MOTOR COURSE, WEYBRIDGE, SURREY. 10th March, 1934. Experimental Department,… | ||
| scan0129 | Carburetter performance tests comparing speed, acceleration, and consumption at Brooklands. | ||
| View original record | X788 13. 3. 34 13-G-IV/3.34 19-G-IV. CARBURETTER TESTS ON BROOKLANDS. Carburetter. Lap Speed Half Mile. S.U. 69.66 M.P.H. 70.31 M.P.H. R.R. Horizontal 70.0 " 72.58 " R.R. Standard 66.04 " (65.45 " )… | ||
| scan0130 | Request to borrow lantern slides or photographs of the 'R' type engine for a presentation on the 'Blue-Bird'. | ||
| View original record | [Handwritten at top right: 8788] CARS DRIVEN BY OUR STAFF AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. THOMSON & TAYLOR (BROOKLANDS) LTD. AUTOMOBILE ENGINEERS GARAGE AND SHOWROOMS— PORTSMOUTH ROAD,… | ||
| scan0131 | Letter to Reid Railton regarding twelve lantern slides of the 'R' engine used in the 'Bluebird'. | ||
| View original record | Hs/Lov.l/MA. 21st March, 1934. Reid A. Railton Esq., Messrs.Thomson & Taylor, (Brooklands) Ltd., Brooklands Track, Byfleet, SURREY. Dear Mr.Railton, Thanks for your letter of the 20th. instant. We… | ||
| scan0132 | Index sheet providing descriptions for a series of slides related to engine testing rigs and development. | ||
| View original record | DESCRIPTION OF SLIDES. 305A Supercharger Testing Rig. 303A Forced draught into carburetter air intake representing forward speed of machine and giving increased boost pressure. 302A Complete engine on… | ||
| scan0133 | Radiator test results for a streamlined Bentley car B23AE at Brooklands. | ||
| View original record | X788 COPY FOR FILES. 18.5.34. BROOKLANDS TESTS - B23AE - 15.5.34. In the course of radiator tests on the streamlined Bentley car B23AE at Brooklands we obtained the following speeds - ½ mile :- 18.8… | ||
| scan0134 | Modifications and preparations for radiator tests on the Vulture car at Brooklands. | ||
| View original record | To RHC. x785 Hs/Std.11/KW.4.6.34. Radiator Tests on Vulture at Brooklands. We are proposing to carry out radiator tests on the Vulture car at Brooklands in the near future, and should like to get the… | ||
| scan0135 | Requesting a radiator grille be made interchangeable with standard shutters for testing at Brooklands. | ||
| View original record | X788 RHC. From Hs/Std. Hs/Std.2/MA.13.6.34. RADIATOR GRILLE FOR BROOKLANDS TESTS. You are at present modifying a radiator grille which we wish to test out at Brooklands on 3.B.IV. Will you therefore… | ||
| scan0136 | Short memo confirming the assumed availability of the Weybridge track for tests. | ||
| View original record | Y788 25.6.34. BRADLEY, BARKLUB, WEYBRIDGE. UNLESS WE HEAR TO CONTRARY ASSUME TRACK IS AVAILABLE FOR TESTS TUESDAY TO THURSDAY THIS WEEK. [Signature] ROBOTHAM, ROYCAR. | ||
| scan0137 | Telegram received by telephone regarding Whitney Straight's potential kilometre record attempt. | ||
| View original record | RR. 144A. (12 BKS.) (45656-10.5.33) 3/9720/2. (1788) ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. Time Received: 1-47 Date: 25/6/32 To: Rob By: OST from: Weybridge 1-17 Expect that Whitney… | ||
| scan0138 | Tests carried out on fans and a Vulture radiator at Brooklands. | ||
| View original record | To E. from Hs/Std. x 758 Hs/Std.14/RW.3.7.34. Report on Tests carried out on Fans and Radiator (Vulture) at Brooklands 26.6.34. The parts tested were a Vulture radiator and three different fans, the… | ||
| scan0139 | Radiator performance test results at various speeds and throttle settings with louvres open and closed. | ||
| View original record | -2- Hs/Std.14/KW.3.7.34. Radiator Results. (1) 30 M.P.H. Full Throttle. Maintained Water Temp. oC. Bonnet Air Temp. (Actual) Top Bottom Mean Louvres Open 51.5 39.0 45.3 35 Louvres closed 55.5 41.5… | ||
| scan0140 | Test results comparing different cooling fans based on maintained water and bonnet air temperatures. | ||
| View original record | -3- HS/Std.14/KW.3.7.34. FANS. (1) 30 M.P.H. Full Throttle - Bonnet Shutters closed. Maintained Water Temp. oC. Bonnet Air Temp. (Actual) Top Bottom Mean No Fan 61 49 55 22 59 Std. Fan 50 39 44.5 23… | ||
| scan0141 | Conclusions from radiator tests comparing the performance of radiators for the Vulture and Spectre cars. | ||
| View original record | -4- CONCLUSIONS. Radiator. From above tests it is seen that the Vulture radiator matrix is adequate for dealing with the water heat to be dissipated from the Vulture engine. Below is given a… | ||
| scan0142 | Comparison of cooling efficiency and noise levels between different fan designs. | ||
| View original record | -5- HS/Std.14/KW. 3.7.34. Fans. The staggered bladed fan to LeC.3766 is equal in cooling efficiency to the standard Ph.II fan and definitely quieter. The American variable pitch fan tested is more… | ||
| scan0143 | Graph showing the results of Vulture radiator tests at Brooklands Track. | ||
| View original record | VULTURE RADIATOR TESTS AT BROOKLANDS TRACK JUNE 26 1934 AIR TEMP. TO BOIL °C 70 60 50 45 40 LOUVRES OPEN LOUVRES CLOSED M.P.H. 30 FULL THROTTLE 45 FULL THROTTLE 60 CRUISING 75 90 FULL THROTTLE C.S.S… | ||
| scan0144 | Graph comparing the performance of different Phantom engine cooling fans at Brooklands track. | ||
| View original record | PHANTOM FAN TESTS AT BROOKLANDS TRACK JUNE 26 1934 AIR TEMP TO BOIL 65 60 55 50 45 40 35 30 60 FULL THROTTLE M.P.H. CRUISING. AMERICAN V.P. FAN STAGGERED LEC3766 FAN STANDARD PII FAN NO FAN OLD… | ||
| scan0145 | Performance test results for vehicle B-35-AE at Brooklands, detailing lap speeds and acceleration times. | ||
| View original record | x788 6.7.34. B-35-AE. (Customer E.R. Hall) Brooklands. Lap Speed 1-50.6 (90.06 M.P.H.) 1/4 mile 18.8 secs (95.74 MPH) C.O. " " 1.52.6 ( M.P.H.) 1/4 mile 19.6 secs (91.84 " ) C.C. Max. R.P.M. C.O. off… | ||
| scan0146 | Press clipping featuring articles on a streamlined Bentley and a Lagonda drop-head coupe. | ||
| View original record | A 4½-litre Lagonda, fitted with a special foursome drop-head coupe body by the Lancefield Coachworks, which has just been supplied to Major Maurice D. Cohn through George Newman and Co. (Brighton)… | ||
| scan0147 | The track performance testing of E.R. Hall's car, model B-35-AE, comparing it to a streamlined saloon. | ||
| View original record | To Eg. c. to Nor. c. to E. c. to L. c. to EV. E.R. Hall's Car - B-35-AE. We took this car down to the track last week with its final body on it, to check its performance before we altered anything.… | ||
| scan0148 | Aerodynamics, acceleration, and wind tunnel tests for improving Bentley competition cars. | ||
| View original record | -2- We have talked the matter over with Bn. who emphasized that maximum speed would not be obtained for anything but brief periods during the race, and that acceleration was the most important… | ||
| scan0149 | Photographic comparison of lap speeds between a Standard Saloon and a streamlined B.23.AE model. | ||
| View original record | Standard Saloon Lap Speed 88 M.P.H B. 23. AE Lap Speep 94.4 M-P-H | ||
| scan0150 | Photograph of E.R. Hall's car with a handwritten note about its lap speed. | ||
| View original record | E. R. Hall's car Lap Speed 90 M.P.H. | ||
| scan0151 | Photograph of E.R. Hall's racing car with a handwritten caption. | ||
| View original record | E.R. Hall's Car Lap Speed 90 M.P.H. | ||
| scan0152 | Letter detailing the results and calculations from wind tunnel tests on a car body. | ||
| View original record | COPY. x78 Alfriston, Edenbridge, Kent. 28th July, 1934. Dear Rm., You will be pleased to hear that we completed our Wind Tunnel Tests at 12.30 p.m. to-day. On Monday I have to call at Brooklands to… | ||
| scan0153 | Calculation for predicted speed and a note indicating it is a preliminary report. | ||
| View original record | -2- = 99.6² x 119.6 x 375 ------------------- 334 = 110 M.P.H. You will realise this this is only a rough shot and full report and complete data and predicted speeds will follow. Ev. | ||
| scan0154 | Track test report for Hall's Car (B-35-AE), detailing speed and performance under various configurations. | ||
| View original record | X758 30.7.34. Hall's Car - B-35-AE. We took this car down to the track on 27.7.34. The body was as shewn in Hs/Rm.6/KW.11.7.34, except that a side spare wheel carrier was fitted, the wings were cut… | ||
| scan0155 | Summary of development work on engine cam forms and followers, noting the performance gains were not worth the risk of valve spring failure. | ||
| View original record | -2- Attached are various curves shewing development work carried out on this engine. Actually it will be seen that with R. engine cam forms and .750 radius followers there is a gain of about 2% in… | ||
| scan0156 | Performance graph plotting RPM against MPH for different gears and two different tyre sizes. | ||
| View original record | J.E.R. HALLS CHASSIS M.P.H. R.P.M. F.D R.P.M. AT 60 M.P.H. 5.50 x 18 TYRES TOP 2609 3RD 3244 2ND 4146 1ST 2635 30 M.P.H. 5.25 x 18 TYRES TOP 2667 3RD 3320 2ND 4240 1ST 2695 30 M.P.H. 5.50" TYRES 5.25"… | ||
| scan0157 | Prepaid telegram enquiring about the availability of the track for tests. | ||
| View original record | PREPAID TELEGRAM. γ 708 8.8.34. BARKLUB, WEYBRIDGE. PLEASE SAY IF TRACK IS AVAILABLE FOR TESTS TOMORROW. ROBOTHAM. ROYCAR. | ||
| scan0158 | Post office telegram confirming track availability from Bradley to Robotham Boycar. | ||
| View original record | B or C x788 POST OFFICE TELEGRAPHS. Charges to pay s. d. TIME OF RECEIPT 12 40 M From: If there is doubt about the telegram ring "Telegrams delivery for accuracy of any part of this Enquiry" or call… | ||
| scan0159 | Shock absorber tests at Brooklands comparing Hartford dampers on a Phantom and Bentley. | ||
| View original record | 1788 SHOCK ABSORBER TESTS BROOKLANDS 9.8.34. The object was to ascertain whether the Phantom benefitted as much from Hartfords as the Bentley. It was found that for the same degree of discomfort there… | ||
| scan0160 | Telegram requesting track availability for tests at Weybridge. | ||
| View original record | 2788 68S. 3.9.34. (REPLY PAID) (PREPAID). BARKLUB, WEYBRIDGE. PLEASE SAY IF TRACK AVAILABLE FOR TESTS TO-MORROW AND WEDNESDAY. STEADMAN, ROYCAR. | ||
| scan0161 | Test report comparing the lap and half-mile speeds of a 22-EX prototype and a Cadillac at Brooklands race track. | ||
| View original record | + 786 Hs/Rm. From Wym. 10.8.34. VISIT OF 22-EX. & CADILLAC TO BROOKLANDS. The above two cars were tested on the track at Brooklands yesterday for lap speeds and the following figures were obtained -… | ||
| scan0162 | Test results for car 2-B-4 at Brooklands after fitting new Aerolite pistons. | ||
| View original record | S/W. Hs/Rm...from Bn. Copy to Sg. x188 Rm Bn.1/WT12.9.34. I tested the car I am running - 2-B-4 at Brooklands with the following results. Lap speed, average of three laps. 90. Flying half-mile. 93.26… | ||
| scan0163 | Comparative speed test report for cars 18-G-IV and 20-G-IV at Brooklands track. | ||
| View original record | To Hs/Rm. x783 Hs/Wym.12/KW.19.9.34. 18-G-IV and 20-G-IV. The above two cars were taken down yesterday to Brooklands track for comparative speed tests, 18-G-IV being fitted with a standard exhaust… | ||
| scan0164 | The availability of the Weybridge track. | ||
| View original record | x786 12.10.34. BARKLUB, WEYBRIDGE. (REPAY PAID) PLEASE SAY IF TRACK AVAILABLE MONDAY TO THURSDAY NEXT INCLUSIVE. STEADMAN, ROYCAR. | ||
| scan0165 | Report of a test on a Bentley Small Bore Induction Pipe (EX.14528) to determine its effect on the car's maximum speed. | ||
| View original record | X788 24.10.34 Report of Test carried out on Bentley Small Bore Induction Pipe to EX.14528. The purpose of the test was to determine whether this induction pipe would affect the maximum speed of the… | ||
| scan0166 | Further tests on Bentley radiators at Brooklands. | ||
| View original record | (786) 1.11.34. Report on Further Tests on Bentley Radiators at Brooklands (see previous report). Tests. A number of radiator tests were carried out at Brooklands in the usual manner for the following… | ||
| scan0167 | Summary of cooling tests and proposals for radiator matrix and fan configurations on a Bentley car. | ||
| View original record | -2- (3) From sheet (3) is seen the difference in our intake temperature under full throttle conditions with the two methods of temperature control, and this difference falls as the power output of the… | ||
| scan0168 | Performance graph comparing two Bentley Marston Mark V radiator matrices of varying depths (70mm & 58mm). | ||
| View original record | SHEET (1) BENTLEY RADIATORS COMPARISON OF BENTLEY RADIATOR MATRICES (MARSTON MARK V) OF VARYING DEPTHS. (70 MM & 58 MM) AIR TEMP TO BOIL °C CAR SPEED 30 MPH FULL THROTTLE 45 MPH FULL THROTTLE 60 MPH… | ||
| scan0169 | Graph comparing the performance of two similar 58mm Marston Mark V radiator matrices for a Bentley. | ||
| View original record | SHEET (2) BENTLEY RADIATORS COMPARISON OF TWO SIMILAR 58 MM MARSTON MARK V RADIATOR MATRICES AIR TEMP TO BOIL °C CAR SPEED 30 MPH FULL THROTTLE 45 MPH FULL THROTTLE 60 MPH CRUISING 84 MPH FULL… | ||
| scan0170 | Graph comparing carburettor air intake temperatures for Bentley radiators with shutter control versus thermostatic by-pass control. | ||
| View original record | SHEET (3) BENTLEY RADIATORS COMPARISON OF AIR INTAKE TEMPERATURES WITH SHUTTER AND BY-PASS CONTROL OF WATER TEMP. CARBURETTOR AIR INTAKE TEMP. °C CAR SPEED SHUTTER CONTROL THERMOSTATIC BY-PASS CONTROL… | ||
| scan0171 | Graph determining the permissible area reduction for a Bentley Marston Mark V radiator matrix to achieve equal cooling to a standard Mark III matrix. | ||
| View original record | SHEET (4) BENTLEY RADIATORS DETERMINATION OF THE REDUCTION IN AREA PERMISSIBLE WITH 58 MM MARSTON MARK V MATRIX TO GIVE EQUAL COOLING TO STD. MATRIX (MARK III) NOTE - BLANKING EXTENDS WIDTH OF MATRIX… | ||
| scan0172 | Graph comparing cooling performance and speeds obtained with three different types of Bentley fans. | ||
| View original record | SHEET (5) BENTLEY RADIATORS AND FANS COMPARISON OF COOLING AND SPEEDS OBTAINED WITH THREE DIFFERENT TYPE OF FAN Y-AXIS: AIR TEMP TO BOIL °C X-AXIS: CAR SPEED DATA POINTS: (a) - STAGGERED 20/25 FAN -… | ||
| scan0173 | Speed tests of different Bentley models at Brooklands in 1934 and 1935. | ||
| View original record | S/W. To Rm. from Lp. X1320 Lp.8/LAM.25.4.35. Re: BENTLEY SPEEDS. (Hs/Rm.16/KW.15.4.35.). B.2. November, 1934. BROOKLANDS. Lap Speed, two up, 1 min. 51 secs. 89.74 M.P.H. Half mile on top from 10… | ||
| scan0174 | Lap speeds and performance data for a car with a high compression head and Aerolite pistons, tested at Brooklands. | ||
| View original record | S/W. To Rm. from Lp. Copy to Bn. X1320 Lp.8/LAM.1.5.35. Re: 4.B.IV. HIGH COMPRESSION HEAD, AEROLITE PISTONS - BROOKLANDS. As requested, I got some lap speeds on the above car yesterday, and perhaps… | ||
| scan0175 | Performance test report from Brooklands detailing lap speeds, flying half mile, and damper readings. | ||
| View original record | S/W. To Rm. From Lp. Copy to Bn. 41320 Lp.12/LAM.15.5.35. Re: 4.B.IV. Bn. drove this car at Brooklands last week to check my previous lap speeds, and ran a lap at 90.55 M.P.H. With a North East wind… | ||
| scan0176 | The performance and testing of a car fitted with a High Compression Head on Brooklands Track. | ||
| View original record | /W. Rm To Sg. from Lp. Copy to Bn. Lp.11/LAM.15.5.35. Re: 4.B.IV. I do not know whether you want me to make a point of letting Mr. Fedden try the above car. which is fitted with a High Compression… | ||
| scan0177 | Letter to Brooklands Automobile Racing Club requesting track availability for testing. | ||
| View original record | X1320 Exptl. Dept. Hs/Std.7/KW. 4th July, 1935. Percy Bradley Esq., Clerk of the Course, Brooklands Automobile Racing Club, Weybridge, SURREY. Dear Sir, We wish to carry out some tests on Brooklands… | ||
| scan0178 | Letter to the Clerk of the Course at Brooklands Automobile Racing Club requesting track admission. | ||
| View original record | X1320 Exptl: Dept. Hs/Std.21/KW. 8th July, 1935. P. Bradley, Esq., Clerk of the Course, Brooklands Automobile Racing Club, Weybridge, Surrey. Dear Sir, Will you please admit bearer, together with car,… | ||
| scan0179 | Confirming a book of tickets for use at Brooklands is being obtained. | ||
| View original record | S/W Hs/Rm. Rm X1320 04/C9.7.35 Hs/Rm6/MJ8.7.35 As requested, we are obtaining a Book of Tickets for use at Brooklands and will forward this as soon as possible. C. | ||
| scan0180 | Telex message instructing a representative to telephone the Experimental Department immediately upon receipt. | ||
| View original record | <1320 10.7.35. BOWERING, ROLLS-ROYCE REPRESENTATIVE, BARKLUB WEYBRIDGE. TELEPHONE EXPERIMENTAL DEPARTMENT IMMEDIATELY ON RECEIPT. ROBOTHAM, ROYCAR. | ||
| scan0181 | Short note confirming the enclosure of a book of Brooklands Tickets. | ||
| View original record | S/W Hs/Rm X1370 ∅1/C11.7.35 Hs/Rm6/MJ8.7.35 -------- Further to ∅4/C9.7.35 we have pleasure in enclosing herewith the book of Brooklands Tickets. C. Enc. 32/1-100. | ||
| scan0182 | Letter to the Brooklands Automobile Racing Club enclosing a track ticket. | ||
| View original record | L1320 Exptl. Dept. 11th July, 1935. Hs/Rm.15/KW. P. Bradley, Esq., Clerk of the Course, Brooklands Automobile Racing Club, Weybridge, Surrey. Dear Sir, With reference to our letter Hs/Std.21/KW. of… | ||
| scan0183 | Visit to Brooklands to test a Spectre 2 against a Buick, detailing lap times and a subsequent engine failure. | ||
| View original record | To Hs/Rm. X1320 Hs/FD.21/KW.19.7.35. Visit to Brooklands with Spectre 2 & Buick, 18.7.35. Spectre 2 and the Buick were taken to Brooklands to ascertain the lap speeds of the respective cars, also to… | ||
| scan0184 | Test report on a new type Bentley oil filler and breather, tested on car B-23-AE at Brooklands. | ||
| View original record | To Hs/Rm. 21320 Hs/Bwg.16/KW.19.7.35. New Type Bentley Oil Filler incorporating Breather to E.60535, tested out on B-23-AE at Brooklands. 20 laps at 4,000 r.p.m. at intervals of 3 laps. Every 4th lap… | ||
| scan0185 | Letter to the Clerk of the Course at Brooklands requesting to test a car on the track. | ||
| View original record | X1370 Exptl. Dept. Hs/Rm.5/KW. 7th August, 1935. P. Bradley, Esq., Clerk of the Course, Brooklands Automobile Racing Club, Weybridge, Surrey. Dear Sir, We are proposing to test a car on Brooklands… | ||
| scan0186 | Performance test results from Brooklands for E.R. Hall's Car (B-35-AE) with various settings for mixture, ignition, and aerodynamics. | ||
| View original record | X1320 BROOKLANDS TESTS - 9.8.35. B-35-AE - E.R. Hall's Car. 6.50 x 19" Tyres. Alum. latest shape mudguards. 1. Mixture normal. Lap - 100 secs. = 99.61 M.P.H. 1/2 mile 17.8 " = 101.12 " 2. Mixture half… | ||
| scan0187 | Lap speeds and tyre configurations during track testing. | ||
| View original record | -2- 5 laps. 5.50 x 19" tyres. Green old type wings. Lap speed - 99.6 secs = 100.01 M.P.H. 1/4 mile 18.0 " = 100.00 " No. 4 test was carried out after lunch, with slightly more wind on the track. 2… | ||
| scan0188 | Performance tests conducted at Brooklands, comparing various car configurations. | ||
| View original record | Y1320 Brooklands Tests - 9.8.35. The following figures are given as they were taken on the same day as those for E.R. Hall's car. 1-B-IV. Lap speed 115.4 secs = 86.46 M.P.H. 1/2 mile 20.8 " = 88.24 "… | ||
| scan0189 | Performance test results for the Original Big Bore Unit in a Bentley I. | ||
| View original record | X1320 21.9.35. Original Big Bore Unit in Bentley I. Large Carburetters, standard exhaust system, 6.8 C/R. Lap Speeds 1 min. 49 4/5. 90.72 m.p.h. C.O. Open 1 min. 49 91.38 m.p.h. C.O. Closed 1 min.… | ||
| scan0190 | Telegram regarding the closure of the experimental Hancock track for repairs. | ||
| View original record | ROLLS-ROYCE LTD. X1320 TELEGRAM RECEIVED BY TELEPHONE. Time Received 11-49 Date 23.9.35 To Raycar Derby By fw from Esher 11-28 10 Experimental Hancock track closed today for repairs FROM Robotham THIS… | ||
| scan0191 | Letter to the Brooklands Automobile Racing Club regarding track availability for tests. | ||
| View original record | X1320 Exptl. Dept. HS/Rm.11/KW. 25th September,1935. P. Bradley, Esq., Clerk of the Course, Brooklands Automobile Racing Club, Weybridge, Surrey. Dear Sir, It is possible that we shall come down to… | ||
| scan0192 | Performance test results and carburettor settings for vehicle 18-G-IV at Brooklands. | ||
| View original record | To Rm. c. to Hs/CTS. X1320 Hs/GR.5/KW.9.11.35. 18-G-IV - Brooklands. Large bore unit, complete with new cylinder head and manifolds. Rear Axle ratio - 11 x 50. 19" x 6.00" tyres. Lap speed - 2 mins,… | ||
| scan0193 | Performance timings for a Spectre II and a Buick at the Brooklands circuit. | ||
| View original record | FILE.. X,370 Hs/FD.3/JH.17.12.35.. Brooklands 18.7.35.. Spectre II Lap 1 min. 57 secs. 85.13 M.P.H. " " 1/2 MILE 20 minu., 9secs.. 86.12.MPH. B Buick. Lap 2.. min 11.4 secs. 75.8.M.P.H.. " " 1/2 MILE… | ||
| scan0194 | Letter to the Clerk of the Course at Brooklands Motor Course enclosing a track ticket for an aerodynamic car. | ||
| View original record | X1320 Hs/Rm.3/KW. Exptl. Dept. 26th March, 1936. Mr. Percy Bradley, Clerk of the Course, Brooklands Motor Course, Weybridge, SURREY. Dear Sir, Enclosed please find one Track Ticket, No. 32/7. This is… | ||
| scan0195 | Performance test results for Chassis No. 22 G.V. at Brooklands, detailing lap times, acceleration data, and engine notes under windy conditions. | ||
| View original record | GRY (handwritten) CHASSIS NO. 22 G.V. Performance Tests on Brooklands. Strong headwind on Railway Straight. Following wind comming off Byfleet Banking. Results seriously affected by this. Two laps at… | ||
| scan0196 | Radiator tests at Brooklands for Chassis No. 22 G V. | ||
| View original record | CHASSIS NO. 22 G V. Radiator Tests at Brooklands. 1. Header tank half full. Max. speed, full throttle. Air temperature 14°c. Head wind on Railway Straight. Following wind past Vickers Shed. WATER… | ||
| scan0197 | Radiator performance tests on Chassis No. 22 G V, recording water temperatures under various conditions. | ||
| View original record | CHASSIS NO. 22 G V. 31.5.36. Radiator Tests Continued. 4. Spring was fitted in thermostat, and test continued with empty header tank at max. speed. Air 16°c. WATER IN ENGINE | WATER IN RADIATOR |… | ||
| scan0198 | Radiator tests conducted at Brooklands for Chassis No. 22 G.V., comparing temperatures with and without a spring fitted. | ||
| View original record | CHASSIS NO. 22 G.V. 31.3.36. Radiator Tests on Brooklands Continued. MAX. ENGINE TEMP. MAX. RADIATOR TEMP. DIFFERENCE. Spring removed. 89°c. 81°c. 8°c. Spring fitted. 95°c. 87°c. 8°c. Increase due to… | ||
| scan0199 | Radiator temperature test results for Chassis No. 22-C-V at Brooklands. | ||
| View original record | X1320 Chassis No. 22-C-V. 31.3.36. Radiator Tests at Brooklands. (1) Header tank half full. Max speed, full throttle. Air temperature 14°C. Head wind on Railway Straight. Following wind past Vickers… | ||
| scan0200 | Radiator tests with a spring-fitted thermostat, comparing performance with an empty versus nearly full header tank. | ||
| View original record | (9) Radiator Tests Continued. 4. Spring was fitted in thermostat, and test continued with empty header tank at max. speed. Air 16°C. WATER IN ENGINE | WATER IN RADIATOR | DIFFERENCE | SHUTTER POSITION… | ||
| scan0201 | Engine and radiator temperature tests at 30 m.p.h. under varying conditions. | ||
| View original record | (3) 6. General conditions on road at about 30 m.p.h. Spring fitted. Air 18°C. WATER IN ENGINE WATER IN RADIATOR. 82°C. 74°C. 80 73 80 73 Average 80.6°C. 73.5°C. Engine thermometer in standard position… | ||
| scan0202 | Engine cooling performance, mentioning local boiling and continued testing with a spring removed. | ||
| View original record | (4) While the spring is excellent for traffic and slow running generally, it is thought that the maximum of 95°C shown represents local boiling at some points on the head, and that the engine would… | ||
| scan0203 | Engine performance with observations on temperature and local boiling. | ||
| View original record | (4) While the spring is excellent for traffic and slow running generally, it is thought that the maximum of 95oC shown represents local boiling at some points on the head, and that the engine would… | ||
| scan0204 | Performance test results for cars 6-B-IV and 3-B-IV at Brooklands, detailing times and speeds with different engine configurations. | ||
| View original record | To Hs/Rm. X1320 Hs/FD.14/KW.2.4.36. 6-B-IV & 3-B-IV at Brooklands 31.3.36 & 1.4.36. Car Weights. 6-B-IV. 3-B-IV. | | Lap Time | Speed | 1/2 mile Time | Speed | |---|---|---|---|---| | 3-B-IV with unit… | ||
| scan0205 | The performance and issues of car 32-EX during a trip to Brooklands. | ||
| View original record | To Hs/Rm. X 1320 Hs/FD.14/JH. 2.4.36. 32-EX at Brooklands 1.4.36. Derby - Brooklands - Mileage 137 Petrol used 17 galls. 3 pts. Petrol consumption 7.82 M.P.G. Average speed, total 44.5 M.P.H. Average… | ||
| scan0206 | Slow running tests comparing engine vibrations with different carburetter and induction pipe setups. | ||
| View original record | X206 Hs/FD.15/KW.6.4.36. 6-B-IV. Slow running tests to ascertain the values of - (1) Small carburetters and small induction pipe. (2) Large carburetters and small induction pipe. (3) Large… | ||
| scan0207 | Page detailing acceleration test results and conclusions for different carburetor and induction pipe combinations. | ||
| View original record | -2- Hs/FD.15/KW.6.4.36. Acceleration tests have also been carried out on Shardlow Rd., and an average figure taken both ways with the following results :- | | 10 - 30 MPH. | 10 - 40 MPH. | 10 - 50… | ||
| scan0208 | List of engine settings comparing different ignition timings, RPMs, pipe sizes, and carburettor types. | ||
| View original record | 1 1/2 RETARD 350 R.P.M. SMALL PIPE. SMALL CARBURETTERS. 1 FULLY ADVANCED 450 R.P.M. SMALL PIPE. SMALL CARBURETTERS. 2 1/2 RETARD 350 R.P.M. SMALL PIPE. LARGE CARBURETTERS 2 FULLY ADVANCED. 450 R.P.M.… | ||
| scan0209 | Tests carried out on the Phantom III to resolve petrol starvation at high speeds. | ||
| View original record | X13.20 To E. c. to SG. c. to Wor. c. to By. c. to Mx. Hs/Rm.10/KW.6.4.36. Petrol Starvation on the Ph.III. Attached is a copy of a report on tests carried out on the Ph.III to clear up the petrol… | ||
| scan0210 | Petrol starvation tests for a Phantom III (36-KX) with a Stromberg carburettor at Brooklands. | ||
| View original record | HS/FD.10/JH.6.4.36. 36-KX at Brooklands. A series of tests have been carried out at Brooklands on the Ph.III with Stromberg carburetter fitted to determine the petrol starving point, and arrange for… | ||
| scan0211 | Page 2 of a test report detailing carburettor performance, speed trials, and fuel/oil consumption. | ||
| View original record | -2- HS/FD.10/JH.6.4.36. Cut out open. Lap - 90.55 m.p.h. 1/2 mile - 94.74. m.p.h. Result clear. Test 4 2nd Carburetter. Pumps, flex, pipe line in the V but the petrol feed taken up directly under the… | ||
| scan0212 | Car performance issues including top gear, clutch, and crankcase breather faults. | ||
| View original record | -3- HS/FD.10/HW.6.4.36. Complete car weight - 52 cwts. 3 qrs. 14 lbs. Report. Top gear works out on the track but had never worked out under road conditions. Slipper wheel requires resetting, very bad… | ||
| scan0213 | Expressing disappointment with the incomplete testing of large and small carburetters at Brooklands. | ||
| View original record | To Hs/FD. X1370 Hs/Rm.14/KW.6.4.36. With reference to the comparison of large and small carburetters on Brooklands, I am disappointed with those figures. In the first place, they do not include… | ||
| scan0214 | Test run of the Dubonnet car at Brooklands, focusing on its layout, road holding, and the effects of streamlining. | ||
| View original record | X1320 To Sg. & Wor. c. to E. c. to By. c. to Dn. Windage Reduction. We had a run in the Dubonnet car at Brooklands Track last week. General Layout. This car is illustrated in the "Motor" of March 31st… | ||
| scan0215 | Benefits of vehicle streamlining and proposing wind tunnel work. | ||
| View original record | -2- Taking the results achieved by Dubonnet, it will be seen from the attached table that if Bentley windage could be reduced in the same manner, the result at 60 M.P.H. on improved acceleration would… | ||
| scan0216 | Table comparing the horsepower required and acceleration improvement of a Bentley versus a streamlined Dubonnet car. | ||
| View original record | -3- Ha/Rm.16/K.W.6.4.36. | Road Speed M.P.H. | H.P. Required to drive the Car. | Improved Acceleration due to Streamlining. | |---|---|---|---| | | Bentley | Dubonnet | | | 40 | 20 | 12.5 | 7½% | | 60… | ||
| scan0217 | Visit to Brooklands detailing fuel consumption tests and lap times. | ||
| View original record | X2320 Hs/ABR.3/JH.1.5.36. 6-B-IV - Visit to Brooklands. Consumption test on outward journey. Small carburetters and induction pipe fitted. Miles covered 142. Petrol used 10 galls. Cons. 14.2 m.p.g.… | ||
| scan0218 | Performance test results with large carburetters and induction pipe, noting lap times and speeds. | ||
| View original record | -2- Large carburetters and induction pipe. Lap times. 111 secs. = 89.74 m.p.h. 110.2 " = 90.39 m.p.h. 110.2 " = 90.39 m.p.h. 1/4 mile 19.6 sec. = 91.84 m.p.h. Weather conditions good and no wind.… | ||
| scan0219 | Telegram from Robotham inquiring about track availability for tests at Weybridge the following week. | ||
| View original record | X1320 21.5.36. BRADLEY, (PREPAY REPLY) BARKLUB, WEYBRIDGE. PLEASE ADVISE IF TRACK AVAILABLE FOR TESTS MONDAY TUESDAY WEDNESDAY NEXT WEEK. ROBOTHAM, ROYCAR. | ||
| scan0220 | Telegram confirming the availability of a track for specific time slots. | ||
| View original record | POST OFFICE TELEGRAPHS. TIME OF RECEIPT: PM 1 17 From: TS Prefix: 86 Transmission Info: 186 12.35 WEYBRIDGE T 16 No.: 0159 Office Stamp: DERBY 12 MA 36 Telegram Message: ROBOTHAM ROYCAR DERBY = TRACK… | ||
| scan0221 | Request to arrange for a radiator matrix unit change on a Phantom III car, 33-EX, at Cricklewood. | ||
| View original record | W/N - Br. X1320 Hs/Std.19/KW.22.5.36. We are taking our Ph.III car 33-EX to Brooklands on Monday and Tuesday of next week and shall need to have the radiator matrix unit (includes top and bottom tank)… | ||
| scan0222 | Performance and consumption test report from a visit to Brooklands, comparing small and large carburetters. | ||
| View original record | X1370 Hs/ABR.14/KW.28.5.36. 6-B-IV - Visit to Brooklands 29.4.36. Weight of car and full tank - 1 ton 13 cwts. 1 qr. 7 lbs. Axle ratio 10 x 41. Tyre size 5.50 x 18. Engine Bore 3 1/2"; stroke 4 1/2.… | ||
| scan0223 | Report comparing vehicle performance with small and large carburetters and induction pipes, including lap times and speeds. | ||
| View original record | -2- Hs/ABR.14/KW.28.5.36. Time lost on the return journey was due to the heavy traffic between Brooklands and St. Albans, the running time from St. Albans being the same both ways. Small Carburetters… | ||
| scan0224 | Request to modify carburetter parts for car 33-EX before it goes to Brooklands. | ||
| View original record | To RHC. X 1320 Hs/Std.4/JH. 22.5.36. As we are proposing to take 33-EX car to Brooklands on Monday of next week we would like you to modify a set of parts for the latest 20/25 float chamber vent Lec.… | ||
| scan0225 | Note confirming an appointment for a Phantom III, chassis 33-EX, to have its radiator changed. | ||
| View original record | N-W X1320 Rm Br/M7/A. 25.5.36 re Phantom 111 - Chassis 33-EX Your Hs/Std19/KW22.5.36. We note that this car will be coming to us about 8a.m. tomorrow Tuesday morning for the purpose of having the… | ||
| scan0226 | Visit to Brooklands for comparison tests between small and large carburettors and induction pipes. | ||
| View original record | X1320 Copy for Brooklands File Hs/ABR.14/KW.28.5.36. 6-B-IV - Visit to Brooklands 29.4.36. Comparison tests between Large Carburetters & Induction pipes & small ditto. Weight of car and full tank - 1… | ||
| scan0227 | Performance test results comparing small and large carburetters and induction pipes. | ||
| View original record | -2- Hs/ABR.14/KW.28.5.36. Time lost on the return journey was due to the heavy traffic between Brooklands and St. Albans, the running time from St. Albans being the same both ways. Small Carburetters… | ||
| scan0228 | Cooling system performance and overheating issues of the Phantom III in comparison to the Phantom II. | ||
| View original record | To E. from Rm. c. to Sg. c. to Wor. c. to Hy. X1320 Hs/Rm.12/KW.10.6.36. Phantom III Cooling. We have been trying to establish a basic figure for the Ph.III Cooling. It is always possible at some time… | ||
| scan0229 | Radiator, fan, and bonnet cooling tests conducted at Brooklands. | ||
| View original record | Hs/Std.13/KW.10.6.36. Report on Radiator Tests at Brooklands - May 25th & 26th. 33-EX car was taken to Brooklands on the above dates in order to estimate the effectiveness of the cooling on Ph.III and… | ||
| scan0230 | Summary and conclusion of cooling tests for the Phantom III car, proposing improvements such as a new radiator matrix, louvred bonnets, and a flexible fan. | ||
| View original record | -2- Hs/Std.13/KW.10.6.36. (4) The "lamp-post" float chamber vent scheme as on 20/25 works perfectly well on Ph.III, no difficulty being experienced in starting after switching off and waiting for 3-4… | ||
| scan0231 | Remedying cooling differences at low speeds between Phantom models by using a more effective fan. | ||
| View original record | -3- Hs/Std.13/KW.10.6.36. low speeds. As regards the difference in cooling at low speeds, we hope to remedy this by means of a more effective fan; in any case it must be borne in mind that owing to… | ||
| scan0232 | Summary of radiator test results conducted at Brooklands. | ||
| View original record | RESULTS OF RADIATOR TESTS AT BROOKLANDS. Object of Test | Conditions of Test | Critical Air Temp. °C. | Temp. of air leaving radiator core. (Average air temp. for day - 21°C.) --- Mark V & Mark VI… | ||
| scan0233 | Table of critical air temperature figures for a Phantom II car under different speed conditions. | ||
| View original record | Critical Air Temperature Figures for Ph.II Car with last standard radiator: i.e., large, hexagon-ended American tubes (taken from Hs/Rm.8/KT.19.5.31). Condition Critical Air Temperature. (1) 30… | ||
| scan0234 | Comparative graph of Brake Horsepower vs. road speed for Phantom I and Phantom II engines. | ||
| View original record | CURVES SHOWING COMPARATIVE B.H.P'S AT VARIOUS ROAD SPEEDS FOR P.I. x P.I. II B.H.P. M.P.H. P.I. II POWER CURVE STD. SILENCER ETC. P.I. POWER CURVE STD. SILENCER ETC. R.M. 155 C S S .36 8 . 6 | ||
| scan0235 | Telegram inquiring about the availability of a track for Thursday or Friday of the current week. | ||
| View original record | X1320 16.6.36. BRADLEY, BARKLUB, WEYBRIDGE. PREPAY REPLY. IS TRACK AVAILABLE THURSDAY FRIDAY THIS WEEK. ROBOTHAM, ROYCAR. | ||
| scan0236 | The cooling tests of a Cadillac V-16 car, comparing its performance to the Phantom III. | ||
| View original record | X1320 To R. c. to Nor. c. to V. c. to MX. HS/Std.3/JH. 24.6.36. Report on Cooling Tests on Cadillac V-16 car at Brooklands - June 18th 1936. This car was taken to the track in order to judge its… | ||
| scan0237 | Comparison of cooling fan performance between a Phantom III and a Cadillac, with a proposal for improving the radiator cooling. | ||
| View original record | -2- (Note fan speed/engine speed ratios of Ph.III and Cadillac are respectively .89 and 1.14. (c) It must be pointed out that the Cadillac car's fan (not the flexible type) is effective but not… | ||
| scan0238 | Results of radiator tests on a Cadillac car at Brooklands. | ||
| View original record | RESULTS OF RADIATOR TESTS ON CADILLAC CAR AT BROOKLANDS. Object of test. | Conditions of test. | Critical air temp. °C. | Temp. of air leaving rad. core - °C. (av. air temp. for day - 25°C) | (1)… | ||
| scan0239 | Specification sheet comparing the particulars of a 'Ph.III Fan' and a 'Cadillac' fan. | ||
| View original record | Particulars of Fans. Ph.III Fan. (1) No. blades. 4 (2) Dia. of tip circle 20" (3) Dist. of forward tips from matrix 1 1/2" (4) " " rear " engines. 3" (5) Depth of blade (approx.) 1 1/2" (6) Width " "… | ||
| scan0240 | Test results for a Cadillac V-16 car at Brooklands, comparing performance with and without the fan. | ||
| View original record | Test on Cadillac V-16 Car at Brooklands - June 18th, 1936. (1) Tests with fan in action. (a) 40 M.P.H. full throttle. Air Top Water Top Water Air Exit Air near Left Right from Matrix Carburetter 25 85… | ||
| scan0241 | Summary of radiator test results conducted at Brooklands. | ||
| View original record | RESULTS OF RADIATOR TESTS AT BROOKLANDS. | Object of Test | Conditions of Test | Critical Air Temp. | Temp of air leaving radiator core. (Average air. temp. for day = 19°C). | | :--- | :--- | :--- |… | ||
| scan0242 | Letter to the Clerk of the Course at Brooklands Motor Course requesting track availability for testing. | ||
| View original record | X1320 Exptl. Dept. 3rd July, 1936. Hs/FD.21/KW. P. Bradley, Esq., Clerk of the Course, Brooklands Motor Course, Weybridge, Surrey. Dear Sir, Will you please let us know, by return of post, if the… | ||
| scan0243 | Telegram inquiring about the availability of a track for testing. | ||
| View original record | X1370 9.7.36. BRADLEY, BARKLUB, WEYBRIDGE. PREPAY REPLY IS TRACK AVAILABLE TO-MORROW FOR TESTING ROBOTHAM, ROYCAR. | ||
| scan0244 | Telegram received by telephone regarding the availability of the track at Weybridge. | ||
| View original record | ROLLS-ROYCE LTD. X1320 TELEGRAM RECEIVED BY TELEPHONE. Time Received: 3.36 Date: 9-7-36 To: Robotham Royce By: YS from: Weybridge 3.1 Y Track is available FROM: Barclub. STAMP: RECEIVED 9 JUL 1936… | ||
| scan0245 | Track visit with car 37-EX at Brooklands to investigate petrol supply drying out at high temperatures. | ||
| View original record | To Rm. X1220 Hs/FD.19/KW.15.7.36. 37-EX at Brooklands 10.7.36. The object of the track visit was to investigate the question of the petrol supply drying out at high temperatures under the bonnet after… | ||
| scan0246 | Test report on carburetter adjustments, petrol consumption, and issues with gearing, bonnet clips, and bodywork. | ||
| View original record | -2- Hs/FD.19/KW.15.7.36. This carburetter had an increased needle movement of 1.2" instead of .8 and the bypass jet was reduced to .055" from .060"; otherwise standard. The petrol consumption to… | ||
| scan0247 | Instructions for preparing the 36-EX car for radiator tests at Brooklands. | ||
| View original record | X1320 To RHC. Hs/Std.1/KW.24.8.36. 36-EX Car - Radiator Tests at Brooklands. We are putting this car into the shop to-day for preparation for tests to be carried out at Brooklands. Will you please… | ||
| scan0248 | List of instructions for fitting a petrol pump, thermometers, and a bonnet to a car. | ||
| View original record | -2- Hs/Std.1/KW.24. 8.36. (8) Fit large petrol pump (EX.1) which we will hand you. (9) Fit thermometers to read air temperature at petrol pump and petrol temperature in petrol suction pipe at pump.… | ||
| scan0249 | Telegram from Robotham inquiring about track availability for tests at Weybridge. | ||
| View original record | X1320 26.8.36. BRADLEY, BARKLUB, WEYBRIDGE. (PREPAY REPLY). IS TRACK AVAILABLE FOR TESTS THURSDAY FRIDAY SATURDAY THIS WEEK ROBOTHAM, ROYCAR. | ||
| scan0250 | Telegram received by telephone regarding track availability. | ||
| View original record | ROLLS-ROYCE LTD. X1370 TELEGRAM RECEIVED BY TELEPHONE. Time Received: 11-46 Date: 26.8.36 To: Kencar Robotham By: TS from: Weybridge 11-22 10 Message Body: Track available Thursday all day and… | ||
| scan0251 | Telegram to Mr. Bradley at Brooklands Motor Course enquiring about track availability for a test. | ||
| View original record | X1320 Mr. Bradley, Brooklands Motor Course, Weybridge, Surrey. 7.9.36. Barklub, Weybridge. Bradley. Will track be available for test tomorrow Tuesday. Steadman, Roycar. | ||
| scan0252 | Telegram received by telephone regarding the availability of tracks. | ||
| View original record | R.R. 144A-12538 14/3/36 WHK ROLLS-ROYCE LTD. X1320 holei - hs/sm TELEGRAM RECEIVED BY TELEPHONE. Time Received: 11 30 Date: 9.9.36 To: Steadman. Roycar. Derby By: da. from: Weybridge. J 11.11. Y.… | ||
| scan0253 | Correcting a previously reported fan speed to engine speed ratio for a Cadillac car. | ||
| View original record | To E. c. to Wor. c. to Ey. c. to Mx. Hs/Std.14/JH.11.9.36. Referring to our report Hs/Std.3/JH.24.6.36. concerning the cooling of the Cadillac car, we attached a sheet giving particulars of the… | ||
| scan0254 | Specification sheet detailing the particulars of two different fans, the Phantom III and the Cadillac. | ||
| View original record | Particulars of Fans. Ph. III Fan. (1) No. blades 4 (2) Dia. of tip circle. 20" (3) Dist. of forward tips from matrix 1¾" (4) " " rear " engines 3" (5) Depth of blade (approx.) 1¾" (6) Width " " 3½"… | ||
| scan0255 | Further radiator, fan, and cowl tests conducted at Brooklands on the Ph.III car. | ||
| View original record | X1320 To E. c. to Wor. c. to Dy. c. to Hx. 9. Ha/Std.3/JH.4.9.36; Report on Further Radiator Tests at Brooklands. A number of further tests have been carried out at Brooklands tract to determine the… | ||
| scan0256 | Conclusions and summary of cooling fan tests, comparing different fan and cowl configurations. | ||
| View original record | (2) Conclusions. For test results see attached sheet. Referring to the sheet, it will be seen that (a) Comparing (1) and (2) indicates that the rear cowl is a disadvantage. (b) Comparing (2) (3) (5),… | ||
| scan0257 | Summary of radiator test results under various fan and cowling configurations. | ||
| View original record | SUMMARY OF RADIATOR TEST RESULTS. TEST CONDITIONS. Air temp. Fan used. Pulley Ratio. Cowlings used. Other Details. To boil - °C. (1) Standard fan. Std. Front and rear. Std. bonnet. (a) 40 M.P.H 21.5… | ||
| scan0258 | Addition to a report detailing cooling tests on a Phantom III after removing lights, horns, and bumper. | ||
| View original record | 19 Addition to Report of Hs/std.3/JH./5.9.36. As a result of information received from the Harrison Radiator Corporation, we decided to test the effect on cooling of removing the spot light, head… | ||
| scan0259 | Results of a Brooklands test comparing critical air temperature under various car configurations at high speed. | ||
| View original record | RESULTS OF FURTHER BROOKLANDS TEST (SEPT. 8th 1936). All tests with bonnet shutters open. Condition of test (all full speed approx. 88 MPH) | Critical air temperature. --- | --- Car as standard (but… | ||
| scan0260 | Telegram received by telephone confirming track availability for the following day. | ||
| View original record | Phoned to Rm at 5.8 pm by Rae ROLLS-ROYCE LTD. X1320 TELEGRAM RECEIVED BY TELEPHONE. Time Received: 5.7 Date: 23-9-36 To: Rowbotham Roycar By: AD from: Weybridge 4.32 Track is available tomorrow FROM:… | ||
| scan0261 | Short telegram message enquiring about the availability of a track for testing. | ||
| View original record | X1320 23.9.36. BRADLEY, BARKLUB, WEYBRIDGE. (PREPAY THE REPLY) IS TRACK AVAILABLE TO-MORROW FOR TESTING ROBOTHAM. | ||
| scan0262 | Test report detailing lap times and adjustments for a T.T. Bentley at Brooklands on October 3rd, 1936. | ||
| View original record | To Rm. X1320 Hs/GR.10/KW.5.10.36. T.T. Bentleys at Brooklands, Oct. 3rd 1936. B-106-GA. Practice Car (A) - Marchal headlamps. Fan belt removed. 4 laps not timed. 1 lap at 1 - 33.4/5 = 106.19 M.P.H.… | ||
| scan0263 | Test report for Race Car No. 7, detailing performance, lap times, and tyre changes. | ||
| View original record | -2- Hs/GR.10/KW.5.10.36. B-35-AE. Race Car No.7. No headlamps, fan belt removed. The exhaust tail pipe bore on this car was only 1 3/8" dia. This exhaust system was disconnected in the centre on the… | ||
| scan0264 | T.T. Bentleys at Brooklands, detailing car setup, lap times, and speeds for two vehicles. | ||
| View original record | To Rm. X1320 Hs/GR.10/KW.20.10.36. T.T. Bentleys at Brooklands - Oct. 19th 1936. to Vickers. Very strong cross wind from Railway Straight B-35-AE. Race Car No.7. This car was fitted with Unit No.… | ||
| scan0265 | Summary of performance results comparing a No. 7 Race Car with an 'A' Practice Car. | ||
| View original record | -2- Hs/GR.10/KW.20.10.36. Summary of Results. No. 7 Race CAR - fastest lap = 106.88 M.P.H. 'A' Practice car - " " = 108.27 " No. 7 Race Car 0.91 M.P.H. faster with Unit N9BT. 'A' Practice Car 0.71 "… | ||
| scan0266 | Letter from Brooklands Automobile Racing Club advising that an average speed of 90 m.p.h. is not possible on the outer circuit due to repairs and traffic. | ||
| View original record | P1320. BROOKLANDS AUTOMOBILE RACING CLUB. TELEPHONE N0s: WEYBRIDGE 1220 (10 Lines). TELEGRAMS: BARKLUB, WEYBRIDGE. BROOKLANDS MOTOR COURSE, WEYBRIDGE, SURREY. 5th January, 1937. Messrs. Rolls-Royce… | ||
| scan0267 | Letter from the Experimental Department inquiring about continuous running tests at the Brooklands Motor Course. | ||
| View original record | 1320. (Experimental Dept.) Rm/Gry5/R. 26th February, 1937. Clerk of the Course, Brooklands Motor Course, Weybridge, SURREY. Dear Sir, Can you please let us know to what extent we can carry out… | ||
| scan0268 | Telex message inquiring about the availability of the Weybridge track for testing. | ||
| View original record | 1320 Rm/R. 6.4.37. (PREPAID REPLY). BRADLEY BARKLUB WEYBRIDGE. IS TRACK AVAILABLE FOR TESTING WEDNESDAY THURSDAY FRIDAY SATURDAY THIS WEEK. STEADMAN ROYCAR. | ||
| scan0269 | Telegram received by telephone regarding track availability. | ||
| View original record | R.R. 144A—21240 30/7/36 WHK ROLLS-ROYCE LTD. 1320 TELEGRAM RECEIVED BY TELEPHONE. Time Received: 1.50 Date: 6 4 37 To: Leadman Royce By: AG from: Weybridge 125 G. Track available Wednesday Thursday… | ||
| scan0270 | Telegram received by telephone regarding the availability of a track on certain weekdays. | ||
| View original record | R.R. 144A—21240 30/7/36 WHK ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. 1320 Time Received: 1.50 Date: 6 4 37 To: Headman. Royce By: AG from: Weybridge . 1.25 . G. Track available Wednesday… | ||
| scan0271 | Post office telegram advising of track availability on specific days. | ||
| View original record | POST OFFICE TELEGRAM Charges to pay RECEIVED Prefix. Time handed in. Office of Origin and Service Instructions. Words. No. 170 OFFICE STAMP: DERBY -6 APR 37 PM 1 49m 92 From: 192 1.25 WEYBRIDGE T 9… | ||
| scan0272 | Prepaid reply telegram enquiring about the availability of the Weybridge track for testing. | ||
| View original record | 1320 Pm/GRY 7.4.37 (PREPAID REPLY) BRADLEY BARKLUB WEYBRIDGE. IS TRACK AVAILABLE FOR TESTING MONDAY TUESDAY WEDNESDAY THURSDAY NEXT WEEK STOP CONFIRM NOT AVAILABLE FRIDAY THIS WEEK. STEADMAN ROYCAR. | ||
| scan0273 | Telegram received by telephone concerning track availability. | ||
| View original record | ROLLS-ROYCE^20 LTD. TELEGRAM RECEIVED BY TELEPHONE. Time Received: 10.45. Date: 7.4.37 To: Stradman Roycar By: LW from: Weybridge 10.9.9 Track available all days requested FROM: Barklub. STAMP:… | ||
| scan0274 | Telegram received by telephone confirming that the track is available all day. | ||
| View original record | ROLLS-ROYCE LTD. 1320 TELEGRAM RECEIVED BY TELEPHONE. Time Received 10.45. Date 7 4 37. To Stradman Roycar. By SW. from Weybridge 10.9 g. Track available all day requested. FROM Barklub. THIS SHEET… | ||
| scan0275 | Telegram confirming the availability of a track on requested days. | ||
| View original record | POST OFFICE TELEGRAM Charges to pay: 1320 RECEIVED No. 0053 OFFICE STAMP: DERBY -7 APR 37 1332 CONFIRMATION (25934) 5894 6/35 T.6392 Prefix. Time handed in. Office of Origin and Service Instructions.… | ||
| scan0276 | The work required to prepare car 37-EX for Brooklands cooling tests. | ||
| View original record | To HPS. from Rm/Std. 1320 Rm/Std.12/AP.22.5.37 37-EX. for BROOKLANDS TESTS. We are putting 37-EX. car into the shop on Monday for preparation for Brooklands cooling tests. The following is the work… | ||
| scan0277 | Continuation of instructions regarding feed lines to petrol pumps and obtaining a louvered bonnet for car 37-EX. | ||
| View original record | -2- (7) continued. (e) In feed line to petrol pumps. (f) On front bumper bar. and rig up the instruments in a suitable panel attached to the dashboard. (8) Obtain a 15 1/2° louvred bonnet from… | ||
| scan0278 | Request to fit a standard set of engine sideguards to the 37-EX car for Brooklands. | ||
| View original record | To HPS. from Rm/Std. 1320 Rm/Std.1/AP.26.5.37 37-EX. car for Brooklands. Whilst this car is in the Shop will you please fit a standard set of engine sideguards. Rm/Std. | ||
| scan0279 | Testing the 37-EX model in London traffic and fitting an alternative thermometer union. | ||
| View original record | To HPS. from Rm/Std. 1320 Rm/Std.10/AP.27.5.37 37-EX. BROOKLANDS. We find that it will be necessary to carry out some tests in London traffic with 37-EX. in order to find an alternative position for… | ||
| scan0280 | Post Office telegram confirming track availability. | ||
| View original record | POST OFFICE TELEGRAPHS. No... Office Stamp: 0187 DERBY L 26MAY37 M To... b or C Charges to pay s. d. TIME OF RECEIPT: PM 12 38 From: TS M If there is doubt about the telegram ring "Telegrams delivery… | ||
| scan0281 | Prepaid reply telegram enquiring about the availability of a track for testing. | ||
| View original record | PREPAID REPLY. 1320 b Steadman 28.5.37 BRADLEY, BARKLUB, WEYBRIDGE. IS TRACK AVAILABLE TESTING FROM MAY 31st TO JUNE 12th. IF NOT WHICH DAYS. STEADMAN, ROYCAR. | ||
| scan0282 | Daily report on overheating tests conducted at Cricklewood and Brooklands. | ||
| View original record | N-W (Rm) Hs Please note Rm 1320 Noted Br/Wb/CM.1.6.37. Daily Report on Overheating. # Tests at Cricklewood and Brooklands. ---------------------------- We have arrived at Cricklewood and have… | ||
| scan0283 | Daily report detailing overheating tests carried out on a Standard Phantom III at Brooklands. | ||
| View original record | To Rm 1320 3. 6. 37. @ttached Daily Report on Overheating. Tests carried out 2. 6. 37. As proposed in our report of 1. 6. 37. we have proceeded to carry out tests at Brooklands - the air temperature… | ||
| scan0284 | Engine cooling performance under idling and full speed conditions, and a maximum lap speed for car 37-EX. | ||
| View original record | -2- 4. Under idling conditions the temperature drop across the radiator is approximately 5°C. while under full speed conditions it is approximately 17°C. indicating that we cannot gain much by… | ||
| scan0285 | Daily report on radiator and fan testing conducted at Brooklands to resolve overheating issues. | ||
| View original record | To Rm 1320 8. 6. 37. N/W Daily Report - Radiator. Tests at Brooklands - 7. 6. 37. & 8. 6. 37. We arrived at Cricklewood yesterday morning (Monday) and having collected 22-G-5 proceeded to Brooklands… | ||
| scan0286 | Daily report on radiator cooling tests conducted at Brooklands. | ||
| View original record | N/W Hm Rm 1320 10. 6. 37. Daily Report on Cooling Tests at Brooklands. As proposed in the last report sent you, we have carried out further radiator tests at Brooklands - the matrix units tested… | ||
| scan0287 | Letter from Brooklands Automobile Racing Club proposing the rental of a depot at the racetrack. | ||
| View original record | BROOKLANDS AUTOMOBILE RACING CLUB. TELEPHONE Nos: WEYBRIDGE 1220 (10 LINES). TELEGRAMS: BARKLUB,WEYBRIDGE. 1320 BROOKLANDS MOTOR COURSE, WEYBRIDGE, SURREY. 16th June, 1937. W. A. Robothan, Esq.,… | ||
| scan0288 | Lap and 1/2 mile speeds from radiator tests at Brooklands, with additional results for a 36-EX car. | ||
| View original record | To C. from Rm/Std. 1320 Rm/Std.2/AP.17.6.37 Rm. has asked us to forward you some of our lap speeds taken during our recent radiator tests at Brooklands. We accordingly give these below:- Lap Speeds… | ||
| scan0289 | Letter to A.P. Bradley of the Brooklands Automobile Racing Club regarding a forthcoming discussion in Derby. | ||
| View original record | 1320 Rm10/R. 18th June, 1937. A.P. Bradley, Esq., Brooklands Automobile Racing Club, Weybridge, S U R R E Y. Dear Mr. Bradley, Many thanks for your letter of June 16th. Shall be glad to discuss the… | ||
| scan0290 | Query regarding test results for a high-speed fan and its effectiveness in preventing a car from boiling. | ||
| View original record | STEADMAN 1320 S/W. Rm/Std...from C. C4/D18.6.37. Thank you for Rm/Std.2/AP.17.6.37. These figures are very interesting. I understand that during these tests you were using a high speed fan and were… | ||
| scan0291 | Letter from the Brooklands Automobile Racing Club confirming a meeting. | ||
| View original record | BROOKLANDS AUTOMOBILE RACING CLUB. TELEPHONE No: WEYBRIDGE 1220 (10 LINES). TELEGRAMS: BARKLUB, WEYBRIDGE. BROOKLANDS MOTOR COURSE, WEYBRIDGE, SURREY. 1320 21st June, 1937. W. A. Robotham, Esq.,… | ||
| scan0292 | Letter to Mr. P. Bradley of Brooklands Automobile Racing Club confirming a visit to the works. | ||
| View original record | 1320/ Rm16/R. 23rd June, 1937. P. Bradley, Esq., Brooklands Automobile Racing Club, Brooklands Motor Course, Weybridge, Surrey. Dear Mr. Bradley, Thank you for your letter of the 21st June. I hope to… | ||
| scan0293 | Performance of various engine cooling fans and the standardization of an improved 5-bladed version. | ||
| View original record | 1320 To C. from Rm/Std. Rm/Std.1/AP.23.6.37 Referring to your C.4/D.18.6.37 - the figures for lap speeds which we gave you were taken with various fans and drives fitted to the car. As mentioned in… | ||
| scan0294 | Telegram to Bradley in Weybridge regarding the opening of the track. | ||
| View original record | 1320 BRADLEY, BARKLUB, WEYBRIDGE. ASSUME TRACK IS OPEN THURSDAY UNLESS WE HEAR TO THE CONTRARY. Dodd, ROYCAR. | ||
| scan0295 | Tests carried out on Phantom III radiators and fans at Brooklands and Cricklewood. | ||
| View original record | To Sr. from Rm/std. RR. c. to E. c. to Br. c. to C. c. to Hd. c. to Ry. c. to Da. c. to Sr. S. RM/Std.6/AP.24.6.37 1320 also 340 REPORT ON TESTS CARRIED OUT ON PH.III. RADIATORS, FANS, ETC. AT… | ||
| scan0296 | Vehicle cooling system tests and conclusions drawn from the results. | ||
| View original record | -2- Tests were carried out on 37-MX. car and the method of testing was to thoroughly warm the car up by driving it hard and then idle the engine at its minimum idling speed with the car stationary in… | ||
| scan0297 | Tests and conclusions on improving engine cooling systems and under-bonnet temperatures. | ||
| View original record | -3- Tests with the calorstat spring removed from the radiator calorstat gave an average running temperature of approximately 73°C. i.e. 7° lower than standard. This lowering of the average temperature… | ||
| scan0298 | Summary of test results and conclusions regarding the cooling system performance, including fan, bonnet, and radiator matrix configurations. | ||
| View original record | -4- (3) The fan ring tested showed no gain in cooling at maximum speeds. (4) A gain in high speed cooling is obtained by opening the bonnet shutters, but no further gain is obtained by fitting a… | ||
| scan0299 | Summary of overheating issues, proposing the standardisation of a 5-blade Cadillac fan and discussing a new dashboard thermometer. | ||
| View original record | -5- Rm/Std.G/AR.24.8.37 SUMMARY We think that the 5 blade Cadillac fan tested running at engine speed with an increased size fan belt should be standardised as soon as possible. Such a fan and drive… | ||
| scan0300 | Results of idling cooling tests carried out on a 37 EX car at Brooklands. | ||
| View original record | ( SHEET 1. ) RESULTS OF IDLING COOLING TESTS CARRIED OUT ON 37 EX CAR AT BROOKLANDS CONDITIONS OF TEST - STD MATRIX - B.S.C & FAN - STD MATRIX - B.S.O & FAN - STD MATRIX - B.S.O & FAN - FANRING FITTED… | ||
| scan0301 | Test figures for component temperatures during vehicle operation in dense London traffic. | ||
| View original record | (SHEET 2) TEST FIGURES OBTAINED WHEN RUNNING IN LONDON TRAFFIC (NOTE TESTS WHERE CARRIED OUT BY RUNNING FOR 1 HOUR IN THE MOST DENSE TRAFFIC WHICH COULD BE FOUND) | CONDITIONS OF TESTS | AIR TEMP… | ||
| scan0302 | Table of results from cooling tests carried out at Brooklands on the 37 EX car. | ||
| View original record | (SHEET 3) RESULTS OF COOLING TESTS CARRIED OUT AT BROOKLANDS ( 40 MPH FULL THROTTLE ) ON 37 EX CAR CONDITIONS OF TEST | | AIR TEMP DURING TESTS °C | CRITICAL AIR TEMP °C… | ||
| scan0303 | Table detailing the results of cooling tests carried out at Brooklands on an experimental car. | ||
| View original record | (Sheet 4) RESULTS OF COOLING TESTS CARRIED OUT AT BROOKLANDS (MAX SPEEDS) ON 37 Ex. CAR. CONDITIONS OF TESTS | AIR TEMP. DURING TESTS °C | CRITICAL AIR TEMP. °C. | LAP SPEED. STD. MATRIX. B.S.C. |… | ||
| scan0304 | Results of tests at Brooklands on under bonnet temperatures. | ||
| View original record | (SHEET 5) RESULTS OF TESTS AT BROOKLANDS ON UNDER BONNET TEMPERATURES ETC. CONDITIONS OF TEST | CAR SPEED & LOAD | AIR TEMP. DURING TESTS °C. | TEMP. OF AIR PASSING FAN °C | TEMP OF AIR AT PETROL… | ||
| scan0305 | Performance test data sheet for vehicle 39 EX at Brooklands, detailing lap speeds, acceleration, and deceleration times. | ||
| View original record | Rm.. 1320 axles. 300a, 300b, 1062. 26. 6. 37 39 EX AT. BROOKLANDS Lap speed- 1 min 52 secs. - 88.94 m.p.h overdrive " 1 " 50.6. - 90.06 " Half mile - 19.4 secs. - 92.78 m.p.h. overdrive " 19.6 " -… | ||
| scan0306 | Performance test results for two Bentley models. | ||
| View original record | (2.) Production Bentley - B72.KT. Lap. - 1m 57.2 secs = 84.99 mph Half mile - 21 secs. = 85.71 mph. OHC. Bentley - B 56 BN. Lap. - 1.52.2. 88.78. mph. Half. mile 19.7. 91.37 " Rm/D | ||
| scan0307 | Brief note acknowledging the receipt and noting the contents of a previous communication. | ||
| View original record | S/W Rm/Std. 1320 C18/C25.6.37 Thanks for your Rm/Std.1/AP23.6.37, contents of which I have duly noted. C. Noted Rm/Std | ||
| scan0308 | Graph showing the Tractive Resistance Curve and Horse Power Required at the road wheels for a 47cwt car at Brooklands. | ||
| View original record | 39 EX. AT BROOKLANDS 29-6-37 CAR WEIGHT 47CWTS. TRACTIVE RESISTANCE CURVE HORSE POWER REQUIRED AT ROAD WHEELS HP 100 80 60 40 20 0 M.P.H. 0 20 40 60 80 100 140 120 100 80 SECS. 60 40 20 F.D. 29-6-37 | ||
| scan0309 | Acceleration curve graph comparing the performance of various car models. | ||
| View original record | COMPLETE CARS IN ALL CASES COMPLETE PETROL - OIL - WATER M.P.H SECS ACCELERATION CURVE OLDSMOBILE 27 HP. WITH 2 PASS WEIGHT 33 CWTS RR 25/30 HP 42 CWTS WITH 2 PASS VAUXHALL 25 HP 33 CWTS WITH 2 PASS… | ||
| scan0310 | Letter proposing to conduct tests at the Brooklands Motor Course track. | ||
| View original record | 1320 Rm3/R. 26th June, 1937. P. Bradley, Esq., Clerk of the Course, Brooklands Motor Course, Weybridge, SURREY. Dear Mr. Bradley, We are proposing to come down to the Track on Tuesday of next week to… | ||
| scan0311 | Works slip returning memos and a file copy that were sent to the sender by mistake. | ||
| View original record | W/S. To C. from Rm/Std. 1320 Rm/Std.18/AP.26.6.37 We return herewith attached memos Rm/Std.1/AP.23.6.37 and file copy of C.4/D.18.6.37 which have apparently been returned to us in error. Rm/Std. | ||
| scan0312 | Telegram informing of track unavailability on a Tuesday and Wednesday. | ||
| View original record | ROBOTHAM ROYCAR DERBY = TRACK NOT AVAILABLE FROM 4 TO 6 TUESDAY AND 1.0 PM ONWARDS WEDNESDAY = BRADLEY | ||
| scan0313 | From Robotham to J.L. Evans arranging a meeting at Brooklands for a Bentley comparison test. | ||
| View original record | 1320 A 28.6.37 J.L. EVANS. Can you meet us at Brooklands tomorrow 12.30pm with standard Bentley for comparison test. Robotham. | ||
| scan0314 | Telegram received by telephone regarding the availability of a track. | ||
| View original record | ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. 1320. Rm. Time Received: 1.44. Date: 28.6.37. To: Rowbotham. Roycar. By: lw. from: Weybridge 12.16 17. Track not available from 4 to 6 Tuesday and 1 pm… | ||
| scan0315 | Letter from Brooklands Automobile Racing Club regarding the unavailability of the track for testing. | ||
| View original record | BROOKLANDS AUTOMOBILE RACING CLUB. TELEPHONE N0S: WEYBRIDGE 1220 (10 LINES). TELEGRAMS: BARKLUB, WEYBRIDGE. 1320 BROOKLANDS MOTOR COURSE, WEYBRIDGE, SURREY. 28th June, 1937. W. A. Robotham, Esq.,… | ||
| scan0316 | Personal letter to W. A. Robotham apologising for missing a meeting at the Track. | ||
| View original record | CABLEGRAMS: ETHYLPORT, LONDON. TELEGRAMS: ETHYLPORT, SOWEST. ETHYL EXPORT CORPORATION Incorporated in the State of Delaware U.S.A. with limited liability. THAMES HOUSE, MILLBANK LONDON, S.W.1… | ||
| scan0317 | Cover note for Phantom III performance test curves from Brooklands, detailing acceleration, retardation and speedometer results. | ||
| View original record | To Rm from Rm / IMW. C. to Rm / MW. 32 Ex. Phantom III Tests at Brooklands. 29-6-37 1320. 2.7.37. Herewith curves showing results obtained at The Track. 1. Acceleration curves, showing performance of… | ||
| scan0318 | Performance graph for a Vauxhall 25 HP vehicle tested at Brooklands, showing tractive resistance and horsepower required at various speeds. | ||
| View original record | AT BROOKLANDS VAUXHALL 25 HP TRACTIVE RESISTANCE CURVE HP REQUIRED AT ROAD WHEELS WEIGHT 30 CWTS 3 QRS HP MPH. SECS. TABLE: MPH. | HP 60. | 27.8 50 | 15.2 40. | 7.8 30. | 5.35 20 | 3.08 FD 1.7.37 | ||
| scan0319 | Comparing car performance data for a Brooklands lap. | ||
| View original record | 4257/16.39 Brooklands Lap 25/30 74 M.P.H -- 105 B.H.P. 261 OLDS. 79 1/2 M.P.H 95 B.H.P. 230 Packard 80 M.P.H 120 B.H.P. 282 | ||
| scan0320 | Graph showing results of tractive resistance versus speed tests conducted at Brooklands. | ||
| View original record | 25-6-37 TESTS AT BROOKLANDS 39 EX 5250 lbs 32 EX 5978 lbs OLJS 3498 lbs TRACTIVE RESISTANCE lbs / TON SPEED M P H 39 EX 32 EX OLJS | ||
| scan0321 | Hand-drawn performance comparison of a 28 HP Oldsmobile and a 30 HP Rolls-Royce, including data tables for acceleration/deceleration times and a graph of Horsepower vs. MPH. | ||
| View original record | Acceleration figures [Table 1] 28 HP OLDS. | 30 HP. 22-95 70 | 8.45 un | 7.1 un 60 | 10.55 | 11.8 50 | 14.15 | 17.6 40 | 17.75 | 19.0 30 | 21.4 | 22.0 20 | 10 | 26.5 | 26.0 [Table 2] Deceleration… | ||
| scan0322 | Tractive resistance curve graph for an Oldsmobile, plotting horsepower and seconds against miles per hour. | ||
| View original record | AT BROOKLANDS OLDSMOBILE TRACTIVE RESISTANCE CURVE. H.P. REQUIRED AT ROAD WHEEL WEIGHT - 31 CWTS. 1 QR. M.P.H. HP 60. 25.4. 50. 15.8 40. 8.1 30. 5.0 20. 2.82. SECS. H.P. M.P.H. F.D. 1-7-37 | ||
| scan0323 | Graph showing speedometer correction curve test results for a Phantom III at Brooklands. | ||
| View original record | To Rm From Rm/IMW CURVE NO. 3. 32 Ex. PHANTOM III. SPEEDOMETER TESTS. BROOKLANDS. CORRECTION CURVE FOR USE IN PREPARING PERFORMANCE CURVES ① + ②. 29-6-37. STANDARD A.T. SPEEDOMETER DUNLOP 7.00-18… | ||
| scan0324 | Graph showing the results of a retardation test for a Phantom III Park Ward Saloon at Brooklands. | ||
| View original record | To Rm FROM Rm/IMW. CURVE No.2. 32 EX. PHANTOM III. PARK WARD CLOSE COUPLED SALOON. WEIGHT OF CAR AS TESTED 5978 LBS. RETARDATION TESTS AT BROOKLANDS 29-6-37 WEATHER DRY, STRONG WIND, AIR TEMP. 16°C.… | ||
| scan0325 | Graph showing acceleration test curves for a Phantom III with an overdrive gearbox, conducted at Brooklands. | ||
| View original record | To Rm FROM Rm/IMW. CURVE No 1. 32 Ex. PHANTOM III OVERDRIVE GEARBOX. WEIGHT OF CAR AS TESTED 5978 LBS. ACCELERATION TESTS AT BROOKLANDS. 29-6-37. WEATHER - DRY, STRONG WIND, AIR TEMP. 16°C. LAP… | ||