Rolls-Royce Archives
| Identifier | Entry | ||
| 06-page001 | Announcement and proposed production schedule for the 3.5 Litre Bentley. | ||
| View original record | Eff. from Wor. Copy to Hs. and BV. RECEIVED Wor5/T1.8.33. Re 3½ Litre Bentley Output. Sometime about the middle of September we are announcing the Bentley Car for sale. This note is to ask if you can… | ||
| 06-page002 | Practicality of bucket seats versus luggage space in an experimental Bentley car. | ||
| View original record | Handwritten: 45/33 Copy to Mr. [Redacted] Ra.[Redacted] EH.2./14.8.33. OPEN BENTLEY CAR. Referring to Cx.15/11.7.33. I was able to give a run in this experimental car only between London and Newhaven… | ||
| 06-page003 | The results of wind tunnel tests at Vickers on a 3 Litre Bentley, comparing a new aerodynamic model with the standard saloon. | ||
| View original record | To Hs. from EV. C.c. Rg. Wor. C.c. C. GL. C.c. C. P. 3 LITRE BENTLEY. We have just completed a further set of Wind Tunnel Tests at Vickers with very good results. A full report will be sent in due… | ||
| 06-page004 | Tests to increase Bentport engine power output by modifying cylinder barrels, inlet valves, and compression ratios. | ||
| View original record | Xavier To Gov. From He/Ha. P. RV. H. BV. BL. F. He/Ha./S/KT.2. 8. 5. 33. BENTPORT POWER OUTPUT. We have carried out a number of tests on the Bentport power output since the specification for the first… | ||
| 06-page005 | Power output graph for a Bentley engine, plotting BHP and BMEP against RPM under different configurations. | ||
| View original record | UNIT CX BENTLEY RMB7 POWER OUTPUT A WITH CYL BLOCK EB.89 (LONG TYPE BARRELS LEC3475) ① COMP. RATIO 6.85:1 (EB.272) IN VALVES 1.460 DIA EX " 1.300 DIA CAMSHAFT EB.318 (?/30) 2 - 1.375 SU CARBS. ON… | ||
| 06-page006 | Breaking axle tube on a Bentley and the potential involvement of Geoffrey Smith for publicity photos. | ||
| View original record | S/W. Hs.....from C. CB/D11.8.33 Re: Bentley & Geoffrey Smith Thank you for your Hs5/MJ.10.8.33 and I am sorry to note the axle tube on the Bentley has been breaking. I can quite understand that you do… | ||
| 06-page007 | Issues found after testing the first 15 Bentley chassis which require attention. | ||
| View original record | re BENTLEY CHASSIS Having now tested the first 15 chassis (open test kit) we have noted the following features which we consider require attention. As the chassis when fitted with bodies are to be… | ||
| 06-page008 | List of observations and potential issues regarding gearbox clearance, bonnet louvres, radiator tanks, and tyres. | ||
| View original record | -2- EP19/AH.11.8.33 (8) Clearance between the gear box or change gear mechanism and the floor boards is essential, as shown by our chassis test. The clearances here seem to be small, and we feel under… | ||
| 06-page009 | Acceleration performance figures for a Bentley with 11/43 and 10x41 axles. | ||
| View original record | X45534 ORIGINAL BENTLEY IN FRANCE 11/43 AXLE. The acceleration figures of the car are as follows:- M.P.H. SEC. M.P.H. SEC. 10-20 5 10-20 5 10-30 8 2/5 20-30 4 3/5 10-40 13 30-40 3 1/5 10-50 18 2/5… | ||
| 06-page010 | Meeting notes concerning the appearance of the Bentley 3.5 Litre, focusing on bonnet length and headlamps. | ||
| View original record | X4553 ✓ To Mr...from Mr... Copy to Mr... Ms S-C Bn Hm Be Bly Rel/IM.22.8.31. re:- Appearance of Bentley-3½ Litre. At a meeting at Messrs. Park Ward's Works various matters concerning the appearance of… | ||
| 06-page011 | The approval and design specifications for a horn, comparing it to the one on the Continental Phantom II. | ||
| View original record | - 2 - continued:- EV1/IH.22.8.33. (3) HORNS. The horn with the grill in front to match the grill of the radiator was approved, but it was considered that it should have a short metal domed back… | ||
| 06-page012 | Electrical equipment for the Bentley chassis, specifically the positioning of the stop lamp switch. | ||
| View original record | To Mr. {illegible} from E. E.5/HP.25.8.33. c.c. Mr. Hs. Hy. Hn. Bu. Bly. JSm.HP. EV. By/RD. Bentley Chassis Electrical Equipment. The following notes record results of discussion of the above between… | ||
| 06-page013 | Instructions for coachbuilders regarding the wiring of body lights, cigar lighters, direction indicators, and headlamps. | ||
| View original record | - 2 - drawn up to instruct coachbuilders how to wire the body to the chassis, and that in the case of the rear body lights there should be a definite earth provided on the chassis either by fitting… | ||
| 06-page014 | Modifications to horns and tail lamps for 15 cars, including fittings for continental use. | ||
| View original record | - 3 - done with regard to converting the 15 cars to the new lamp position, that is, whether the present fittings can be unbrazed and shortened, or whether any new parts will be required. (e) Horns. It… | ||
| 06-page015 | Proposing a conference to address dissatisfaction with the appearance of the 3 1/2 Litre car. | ||
| View original record | Private To. Mr. Hs. from Wor. Wor/T25.8.33. I attach copy of letter I have received from C. reference C15/D24.8.33. I shall be glad if you will consider this because it is my intention next week to… | ||
| 06-page016 | Criticism of the new Bentley chassis's radiator appearance and the need for improvement. | ||
| View original record | Copy. S/s. Mor..... from C. Dear Mor., I am afraid this may come as a bit of a shock to you, but I hope it won't in view of the fact that the appearance of the Bentley has been criticised at Derby… | ||
| 06-page017 | The radiator shell shape, shutters, bonnet length, and material thickness. | ||
| View original record | -2- One feels that the ideal would be for the matrix to follow the shape of the shell, as on the old Bentley, and of course on our own cars. Alternatively, I think the least we can do, if the above is… | ||
| 06-page018 | Cover memo regarding Bentley Appearance, forwarding copies of correspondence. | ||
| View original record | C15/T30 To. Mr. Hs. from Wor. Worl/T28.8.33. Re Bentley Appearance. Herewith further copies of correspondence received from C., following on his memo reference C15/T24.8.33. Wor. attd | ||
| 06-page019 | Letter from Wm. Cowen to Mr. Wormald regarding the appearance of a Bentley and discussing design feedback from Jack Barclay. | ||
| View original record | Copy. S/W. Mor. from C. C2/D25.8.33. Dear Mr. Wormald, Re Bentley Appearance. Further to my letter of yesterday and our conversation on the telephone this morning, it is interesting to note the copy… | ||
| 06-page020 | Letter to Jack Barclay Ltd responding to criticisms of the Bentley 3½ Litre Car, specifically concerning the radiator, wheel caps, and magneto. | ||
| View original record | Copy. C1/D25833. 25th August, 1933. Jack Barclay Esq., Messrs Jack Barclay Ltd, George Street, Hanover Square, W.1 Dear Sir, We are in receipt of your letter of yesterday's date and are interested to… | ||
| 06-page021 | Letter from Jack Barclay Ltd. to Bentley Motors with suggestions for improving the new Bentley car. | ||
| View original record | Copy. Copy of letter from Jack Barclay Ltd. George Street, Hanover Square, W.1. JDB/BRR. 24th August, 1933. Messrs Bentley Motors (1931) Ltd, 16 Conduit Street, W.1 Dear Sirs, During the last few days… | ||
| 06-page022 | Piston and crankshaft failures during a high-speed endurance test of a Bentley Unit C.13. | ||
| View original record | FILES. HIGH SPEED ENDURANCE. BENTLEY UNIT C.13. PISTON FAILURE. Pistons LOP. EB.513. EB.495 Die Cast (Mx. type of bedding) EB.501 Gudgeon Pin. Cyl. Block. EB.89 (Short type barrels). On the drawing… | ||
| 06-page023 | No.6 balance weight failure on the No.4 journal which came through the crankcase. | ||
| View original record | -2- No.6 Balance weight (large) on No.4 journal came through nearside of crankcase, scrapping top and bottom half. The retaining stud had broken off at the base. Total running time since overhaul and… | ||
| 06-page024 | Blueprint detailing a Bentley piston failure, showing a crack and dimensional data. | ||
| View original record | Hs. 1116 BENTLEY PISTON FAILURE A DIA B DIA C DIA D DIA CRACK PISTON TYPE | DIA A | DIA B | DIA C | DIA D Mx.TYPE | 3.227 | 3.231 | 3.240 E.B.506 | 3.230 | 3.099 | 3.247 | 3.318 ROLLS ROYCE LTD. PRINT… | ||
| 06-page025 | Modifications to the Bentley's radiator and front apron to improve its appearance. | ||
| View original record | To WOR. from E. c. Hs. By. Bentley Appearance. Replying to your memo WOR.3/T.25.8.33, we have already taken measures to deal with the points raised in EV.1/IH.22.8.33. With regard to the question of… | ||
| 06-page026 | The Bentley radiator design, its similarity to other cars, and the potential for a distinctive mascot. | ||
| View original record | - 2 - E.3/HP.26.8.33. may foul the brake levers on the front axle, and necessitate moving the radiator forward half an inch. We are not worrying about this at the moment, but will deal with it when we… | ||
| 06-page027 | Halting the production of tools for specific parts due to criticism from the Sales department. | ||
| View original record | [Handwritten] FORCE 3 SCL [Struck through] c. Mr. [Struck through] c. Hs. c. Roy [Struck through] C. E. Dept. [Struck through] C. F. Dept. [Struck through] BY.7/G.28.8.33. In View of the criticism put… | ||
| 06-page028 | Letter to Mr. Wormald correcting a typist's error regarding the preferred type of wheel for a Bentley. | ||
| View original record | Hs. S/W. for...from C. C O P Y. C7/C28.8.33. Re Bentley Appearance. Dear Mr. Wormald, Further to my C2/D25.8.33, I have just noticed a Typist's error in the third paragraph of my letter to Jack… | ||
| 06-page029 | Urgent receipt of lamps and horns for a Bentley programme. | ||
| View original record | To TV. from K. c. WGT. C. Hs. Bw/MD. re Bentley. It is very urgent that we should receive lamps and horns mentioned in memo K.5/HP.25.8.33 at the earliest possible moment, to keep the programme that… | ||
| 06-page030 | Summarising feedback from a test drive of a Bentley car, with further critical points to be considered. | ||
| View original record | S/W...FOR. c. to Hs. Re BENTLEY. We were able to arrange yesterday for Mr.Pass, Mr.Barclay, Mr.Munro and Mr.Manning to try the Bentley car. They were all delighted with its performance. Mr.Barclay was… | ||
| 06-page031 | Letter from Pass & Joyce Ltd. to Bentley Motors (1931) Ltd. providing feedback and suggestions on a new Bentley car following a test run. | ||
| View original record | COPY Pass & Joyce Ltd., 373-375, Euston Road, London. N.W.1. 1st September 1933. W.Cowen, Esq., Messrs.Bentley Motors (1931) Ltd., 14-15 Conduit Street, W.1. Dear Mr.Cowen, I would like to say how… | ||
| 06-page032 | Unsatisfactory performance of the Bentley ignition tower due to wear and slackness, and proposing potential improvements. | ||
| View original record | X-Refd to J.H. To E. From Hs/Rm. By. Hs/Rm.10/KT.5.9.33. BENTLEY IGNITION TOWER. There is no doubt that the ignition tower on the Bentley cannot be considered entirely satisfactory. Wear takes place… | ||
| 06-page033 | Technical drawing illustrating wear patterns on a tower bearing assembly under load. | ||
| View original record | LOOKING INTO TOWER BEARING FROM UNDERNEATH. THE DARK LINE SHOWS WHERE A RIDGE HAS BEEN WORN INTO THE METAL. LOAD THE LOAD OF THE CONTACT BLADE & THE ACTION OF THE CAM TRIES TO TILT THE TOWER OVER. ON… | ||
| 06-page034 | Bentley car piston failures, test results, and the decision to proceed with production. | ||
| View original record | To Wor. From Hs. Hs.2/MJ.13.9.33. Re. Bentley Car. Referring to your telephone conversation re. Bentley pistons. The pistons which ran on the last Bentley in France failed after 6,500 miles. We were… | ||
| 06-page035 | List of modifications for the 3 1/2 Litre Bentley car after running 10,000 miles. | ||
| View original record | Hs. E. RHC. Sftr. or Worr. Rm 3 1/2 LITRE BENTLEY. With regard to the discussion in Hs's. Office settling up what was required on the 15 Bentleys, it was decided that the following modifications were… | ||
| 06-page036 | Specification sheet detailing modifications for various vehicle components. | ||
| View original record | - 2 - BY.14/G.13.9.33. (7). Petrol Pump. Two S.U. petrol pumps are required, working from one common base. 1/4" bore petrol piping to be used throughout, with a short length of petroflex type piping… | ||
| 06-page037 | Test results for a Bentley petrol feed system on chassis 4.B.IV at Brooklands. | ||
| View original record | XU1724 To Messrs. From RR/Ltd. C.S.R. Mr. R C.B.L. Mr. P C.S.R. Mr. AP. R.C. H.C. HM/Ltd.1/CC.16.9.33. K785. BENTLEY - PETROL FEED. We have tested chassis 4.B.IV. on Brooklands fitted up with the… | ||
| 06-page038 | Modifications to a Bentley's dumb iron covers and petrol pipe junction bracket. | ||
| View original record | X4103 To BT. from K/JNK. c. Hs. Sft. HJC. K/JNK.2/HP.18.9.33. ------------------- re Bentley. ----------- We send you herewith: Lec.3642 shewing the sheet metal covers over the dumb irons brought… | ||
| 06-page039 | Confirming modifications to 15 Bentley chassis. | ||
| View original record | To Sft. from E. c. Gov. Hs. Hy-Mr. HP. E.1/HP.18.9.33. Modifications to 15 Bentley chassis. We wish to confirm that we are in agreement with your memo Sft.1/BH.13.9.33 showing list of modifications to… | ||
| 06-page040 | Performance figures including braking, acceleration, and weights for the 3½ Litre Bentley. | ||
| View original record | W/S. To BHy. from Hs/Ltd. Hs/Ltd.E/KT.21.9.33. 3½ LITRE BENTLEY. In reply to your verbal request for information re. braking, acceleration, and weights of Bentley cars, we hope the following figures… | ||
| 06-page041 | Letter proposing a visit to discuss development work on a 4-litre 6-cylinder Bentley engine. | ||
| View original record | X <<< S Experimental Dept. Ha/Rn.S/KT. Sept 28th 1933. H.R.Ricardo Esq., Messrs Ricardo & Co (1927) Ltd., Bridge Works, Old Shoreham, Sussex. Dear Mr. Ricardo, I remember, last time I was at Shoreham,… | ||
| 06-page042 | List of proposed modifications for the 3½ Litre Bentley Chassis. | ||
| View original record | No. Y6513 BY/Cgh.14/G.26.9.33. 3½ LITRE BENTLEY CHASSIS. We give below a list of proposed modifications for which we have held up material for chassis after the first 15 pending a decision :- (1).… | ||
| 06-page043 | Bentley acceleration performance figures for a saloon car and comparing them to a previous model. | ||
| View original record | W/B. To B'ly. from Hw/Lid: Hw/Lid.2/KT.26.9.33. BENTLEY PERFORMANCE. Thank you for your B'ly.4/IBEM.25.9.33. We are sorry, but we have no braking figures applicable to the production model; as soon as… | ||
| 06-page044 | Letter from Ricardo & Co. Engineers postponing a proposed visit with Mr. Ricardo. | ||
| View original record | F V 253 DIRECTORS: H.R. RICARDO, F.R.S. THE VISCOUNT COMBERMERE. SIR K.A. ELPHINSTONE, C.B.E., M.C., G.C.V.O. M.A. WETHERINGTON. LONDON OFFICE: 21, SUFFOLK STREET, PALL MALL, LONDON, S.W.1. TEL:-… | ||
| 06-page045 | Letter from the Experimental Department to O. Thornycroft of Ricardo & Co. arranging a visit to Shoreham. | ||
| View original record | K.1553. Experimental Dept. He/Rm.S/KT. Sept 28th 1933. O. Thornycroft Esq., Messrs Ricardo & Co. (1927) Ltd., Bridge Works, Old Shoreham, Sussex. Dear Mr. Thornycroft, Thank you for your letter of the… | ||
| 06-page046 | Meeting notes and recommendations for the 3 1/4 Litre Bentley Chassis 16-200. | ||
| View original record | Y.40432 To Mr. from E. c. Hs. Hy. Sft. Hm. re 3 1/4 Litre Bentley Chassis 16-200. -------------------------------- A meeting of Hs. Sft. Hm. and K. was held to discuss the position of all incomplete… | ||
| 06-page047 | List of engineering decisions and modifications for various engine and chassis components. | ||
| View original record | - 2 - K.5/HP.28.9.33. (4) Sec. 5050. Cylinder. The item mentioned here is simply reverting to the cylinder head cover for thermostatically operated shutters and this section can be considered cleared.… | ||
| 06-page048 | Series of recommendations regarding modifications to exhaust fittings, radiator, bonnet, flywheel and other components. | ||
| View original record | - 3 - E.5/HP.28.9.33. x covering the domed front end of the front expansion box (11) Sec.5230. Exhaust Fittings. It is recommended that this section be held up until October 14th to enable some… | ||
| 06-page049 | List of recommendations and decisions for various vehicle components based on 10,000 mile car tests. | ||
| View original record | - 4 - (17) Sec.6080. Change Gear. It is recommended that we go ahead with the change speed lever as on the 10,000 mile car. (18) Sec.7000. Frames and Fittings. It is recommended that we go ahead with… | ||
| 06-page050 | Recommendations for modifications to the clutch pedal shaft, propeller shaft universal joints, and a water pipe to the carburetter jackets. | ||
| View original record | - 5 - (24) Clutch Pedal Shaft. It is recommended that we go ahead with the spherical mounting for the clutch pedal shaft on the clutch pit. This is fitted to the 10,000 mile car. (25) Propeller shaft… | ||
| 06-page051 | Results of modifications and retests on 14 Bentley cars for demonstration and show purposes. | ||
| View original record | Hs. re BENTLEYS ---------- We have now completed modifications and retests of the 14 cars for demonstration and show purposes. The following are a few points we suggest require your attention.… | ||
| 06-page052 | List of vehicle issues and suggested improvements for various components. | ||
| View original record | -2- EP3/AH. 29.9.33 (5) The horn button, in spite of being slightly raised, is still easily "missed". Suggest another .050" higher. (6) Floor Boards. Vibrations set up in these boards aggravate… | ||
| 06-page053 | List of vehicle faults and observations, including issues with the engine, bodywork, and tyres. | ||
| View original record | -3- (11) Bonnet clips. The ends of the wings are too sharp and awkward to handle, chiefly due to clearance between the bonnet and the front wing being insufficient. (12) Exhaust cut-out. There is a… | ||
| 06-page054 | Letter from Ricardo & Co. confirming a meeting with Mr. Robotham and Mr. Hives. | ||
| View original record | DIRECTORS: H.R. RICARDO, F.R.S. THE VISCOUNT COMBERMERE SIR A.J. ROWLEDGE, K.B.E., M.I.MECH.E., F.R.AE.S. H.A. HETHERINGTON SHOREHAM-BY-SEA STATION, SOUTHERN RLY. TELEPHONES: SHOREHAM-BY-SEA 122 &… | ||
| 06-page055 | Letter to O. Thornycroft of Ricardo & Co. arranging a visit from the chief designer. | ||
| View original record | Experimental Dept. Ha/Ra.2/KT. Oct 2nd 1933. O. Thornycroft Esq., Ricardo & Co. (1927) Ltd., Bridge Works, Old Shoreham, Sussex. Dear Mr. Thornycroft, Thank you for your letter of the 29th ult.… | ||
| 06-page056 | Decisions on components for the 3½ Litre Bentley Chassis. | ||
| View original record | X-33 Wor6/T4.10.33. ------------ from Wor. Copy to Hs. EV. SFT. Rm. 3½ Litre Bentley Chassis. I have carefully considered your E5/HP28.9.33, and whilst naturally one would prefer to wait for the… | ||
| 06-page057 | List of decisions and actions on various vehicle components, continued from a previous page. | ||
| View original record | Contd:-2- (11) Exhaust fittings. We await your further recommendations after October 14th. (12) Exhaust cutout We await your further recommendations. (13) Radiator and Radiator Shutters. I suggest we… | ||
| 06-page058 | Alternative designs for the Bentley mascot. | ||
| View original record | Y6133 To Wor, From Hs. c. to E. c. to Ry. Hs.4/WJ.11.10.33. Re. Bentley Mascot. We think it would be advisable to see alternative designs of mascots before it is decided to standardise a certain… | ||
| 06-page059 | The design and chromium plating of a Bentley mascot intended to represent the 'All-seeing Eye'. | ||
| View original record | To. from Wor. By. Ms. Worl/R.10.10.33. Re: "BENTLEY" MASCOT. We have a Mascot at the Works to be Chromium Plated, and I shall be glad if each one of you will examine the design and let me have your… | ||
| 06-page060 | Short memo regarding an article by Malcolm Campbell on the Bentley in the 'Field' magazine. | ||
| View original record | K.c.133 S/W......Wor- c. t Hs. ---- C6/C13.10.33 Re Bentley. Have you seen the article by Malcolm Campbell on the Bentley in this week's "Field?" If not I will send you a copy. C. | ||
| 06-page061 | Design and reception of the new Bentley Mascot, including the artist's description. | ||
| View original record | XJ.452. Hs. Have you seen R.H.F about this. Rm Hs. from Wor. S. By. Hs. RE: BENTLEY MASCOT. C. is sorry that the Works Officials do not like the Mascot which he sent along, and below please see what… | ||
| 06-page062 | Request for Bentley chassis drawings or photographs for an announcement in 'La Vie Automobile' magazine. | ||
| View original record | To "Rm" Derby Kvvv2 Showrooms Sr/Crn15/HGA.24.10.33 Re: Bentley Mr. Geo Lefèvre of "La Vie Automobile" has kindly consented to make various announcements in "La Vie Automobile" concerning the Bentley.… | ||
| 06-page063 | Decisions on parts for the Bentley chassis. | ||
| View original record | E. Dept. F. Dept. G. Dept. D. Dept. O. Dept. c. Hs. C. Dept. Cy Hs. BY. 2/C. 27.10.33. BENTLEY CHASSIS. ----------------- In view of Wor.2/E.23.10.33. stating that it was necessary for us to release… | ||
| 06-page064 | Production instructions and release status for various car components. | ||
| View original record | - 2 - With regard to the parts which are lagged, which may have to be made later in Staybrite, we should only order a total of 15 + 50 = 65 in all, for the present, but when the Works reach the end of… | ||
| 06-page065 | Updates and decisions on various vehicle components including pumps, lamps, clutches, and carburetters. | ||
| View original record | - 3 - With regard to handling the pumps when delivered, they will be tested to pump paraffin, but will not be dismantled for inspection. If they fail they will go back to E.U's. This may affect the… | ||
| 06-page066 | Letter responding to a request for photographs and drawings of a Bentley chassis. | ||
| View original record | X4173 W/Paris. To Sr. From Ha/Rm. Ha/Rm./KT.31.10.33. Re. Bentley. Referring to your Sr/Crml5/MLG.24.10.33., I am very sorry but we are absolutely without photographs of the Bentley chassis, and shall… | ||
| 06-page067 | Accompanying a Bentley chassis print. | ||
| View original record | (U 563) W/Paris. To Sr. from Hs/Rm. Hs/Rm.19/KT.1.11.33. Here is a chassis print of the Bentley in case it is of any help to you. It is dimensioned up fairly freely, but doubtless you will use it with… | ||
| 06-page068 | Recommendations for pattern modifications and production decisions on the 3.5 litre Bentley Chassis. | ||
| View original record | T.W.F/13 To Mr. From E. E.S/HP.1.11.33. c. Hs. By. Sft. Hmr. 3½ litre Bentley Chassis. With further reference to E.S/HP.28.9.33 and Por.6/T.4.10.33, a meeting of Hs. By.Sft. Hmr. and E. was held to… | ||
| 06-page069 | List of recommendations for the production and sourcing of various vehicle components. | ||
| View original record | - 2 - approximately 100 pumps of the original type to be used up with plugs. (9) Sec.5181. Petrol Pump. It is agreed that the S.U. Co. will supply 200 sets of complete pumps, we on our part supplying… | ||
| 06-page070 | Recommendations and production decisions for various car components. | ||
| View original record | - 3 - S.8/MP.1.11.33. (22) Fan. We now recommend that we go ahead with the new type of fan for 200 sets as fitted to the 10,000 mile car. (25) Propeller Shaft Universal Joints. We wish to cancel the… | ||
| 06-page071 | Recommendation to incorporate a bronze bush in the distributor tower bearing on Bentley engines. | ||
| View original record | (31) Distributor Tower. We recommend incorporation on production immediately of the bronze bush in the distributor tower bearing to overcome the slackness which has previously developed at this point… | ||
| 06-page072 | Production quantities and part standardisation for the 3½ Litre Bentley Chassis. | ||
| View original record | from Wor. Copy to Ser. SFT. Rm. KUSF3 Wor/T2.11.33. Re 3½ Litre Bentley Chassis. With reference to ES/HP1.11.33, I am very pleased that you have had this conference, and of course, I fall in with all… | ||
| 06-page073 | Standardization of sparking plugs for the Bentley Car, comparing proposals from K.L.G and Lodge. | ||
| View original record | X1553 To Hs. from ROY. c. to WOT. c. to E. c. to HY. ROY5/MG2.11.33 Sparking Plugs for the Bentley Car We have now final proposals from the K.L.G and Lodge Companies regarding the above in the event… | ||
| 06-page074 | Testing and standardization of a 3.5 Litre Bentley following a piston failure. | ||
| View original record | To For. From Hs. C. to H. C. to Hy. C. to Srt. FILED No.3/MJ.3.12.33. Re. 3 1/2 Litre Bentley. Replying to Nor.4/T2.11.33. We have a 3 1/2 Litre Bentley car which has completed 8,000 miles with all… | ||
| 06-page075 | Of thanks for confidential memoranda concerning Bentley. | ||
| View original record | To "Hs/Rm" Works Re: Bentley [Handwritten]: K & PTS? Showrooms Sr/Crn2/KLG.3.11.33 Very many thanks for your memoranda Hs/Rm4/KT.31.10.33 and Hs/Rm19/KT.1.11.33 and the most useful information… | ||
| 06-page076 | Test report on the performance of a 100 M.P.H. streamlined Bentley car. | ||
| View original record | FWIV-2-6 To OG. From Hs/Rm. C. ROY. C. BY. S. RM. F. EV. C. Hs/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 favourable… | ||
| 06-page077 | Performance graph showing Brake Horsepower (BHP) vs Revolutions Per Minute (RPM) for a Bentley 3.8 unit. | ||
| View original record | BENTLEY UNIT 3.8 SPEC: R.A.C/MS/10/HP S. - 11 CARB: S.U. H.S.7 CHOKE 1 3/4” NEEDLE: 'MERRILL' N.A.DE.A. C16D JET: .100" IGN: 22.5 B.T.D.C. 2 1/4" FULLY ADV. PLUGS: K.L.G. M.30. PISTONS: AEC 8675 EXH… | ||
| 06-page078 | Cover note forwarding correspondence about Lord Howe's Bentley Touring Car B-1-AE, asking for comments. | ||
| View original record | A W 513 To E. Hs. from Wor. Wor3/T11.11.11.33 I enclose herewith for your perusal, copy of correspondence received from C. regarding Lord Howe and the Bentley Touring Car B-1-AE. Have you any comments… | ||
| 06-page079 | Cover letter discussing feedback received from Lord Howe concerning a two-day trip in a Bentley Open Touring car. | ||
| View original record | S/W. Mor.....from C. HS COPY CG/09.11.33 I enclose herewith copy of letter received from Lord Howe (whom, of course, you know of as a great racing driver) concerning a two days trip he took on the… | ||
| 06-page080 | Letter of thanks and feedback following a 312-mile test drive of a new Bentley. | ||
| View original record | COPY 6th November, 1935. My dear Herbert Scott, I really do not know how to thank you and Mr.Cowan for your very great kindness in giving me one of the most wonderful treats that I have had for a very… | ||
| 06-page081 | Page 2 of a road test report detailing a car's performance, handling, and suspension characteristics at high speed. | ||
| View original record | -2- impossible test with the average sports car, and generally resulting at least in oiled or sooted up plugs. Nothing happened at all; there was not the slightest trace of oil smoke from the exhaust… | ||
| 06-page082 | Page from a vehicle test report comparing steering, gearbox, and braking performance against Mercedes and Alfa models. | ||
| View original record | -3- The steering appeared to be somewhat lower geared than in the case of the Mercedes, or the Alfa; in fact I should say that the steering had probably been designed for the average performance of… | ||
| 06-page083 | Providing feedback on a vehicle's features, including the dash layout, steering wheel, controls, and spark plugs. | ||
| View original record | -4- I found it an enormous advantage to have an arrangement on the dash such as that on the Mercedes which allows the brakes to be taken up while the car is actually under way. I have always thought… | ||
| 06-page084 | Engine performance, ignition, and a comparison of India vs. Dunlop tyres on an S.S. Mercedes. | ||
| View original record | -5- The engine was not the least bit oily and never missed a beat, though I thought I noticed once or twice, when running with the cut-out open, that the note of the engine at high revolutions was not… | ||
| 06-page085 | Page 6 of a letter giving performance feedback, a race suggestion, and criticism of a body component. | ||
| View original record | -6- With the Bentley I should imagine that one could cruise at 70 or 80 m.p.h. all day long and never feel the least bit tired as a result. I have ventured to make a few criticisms in this letter but… | ||
| 06-page086 | List of proposed modifications for a Bentley 10,000 miles test in France. | ||
| View original record | To E, from Hs/Rm. K4173 Hs/Rm.6/KT.11.11.33 1.B.IV. Bentley 10,000 Miles Test. The following is a list of modifications we propose to fit to 1.B.IV. for the next 10,000 miles test in France. ENGINE.… | ||
| 06-page087 | Responding to Lord Howe's report on a Bentley's performance, discussing springing, steering, and braking. | ||
| View original record | X48852 To W.G.N. from K. E.1/HP.13.11.33. c. Hs.—By. Replying to your memo wor.3/r.11.11.33, I regard Lord Howe's report as highly satisfactory, particularly since he is as much pleased with the… | ||
| 06-page088 | Feedback on a Bentley's steering wheel, controls, tyres, weight, and performance potential. | ||
| View original record | - 2 - E.1/HP.13.11.33. --------------- We notice Lord Howe's remarks with regard to the steering wheel. Personally I have not formed a very favourable opinion of the spring wheel we use on any of the… | ||
| 06-page089 | List of criticisms and suggestions regarding various Bentley car details. | ||
| View original record | Gear Lever x 4-33 S/W...Mon. c.c. L> Hs. Hy. Ev. Re BENTLEY. We had a collection made of the various criticisms of the Bentley car details, at the Show and in the Showrooms, and the following is a… | ||
| 06-page090 | Various points of criticism and suggestions for car improvements, including the jack, cut-out, suspension, and tyres. | ||
| View original record | W.or. C2/C15.11.33 -2- the difficulty of placing the jack under the rear axle. On this question Hs. informed us that you are now considering the fitting of permanent pads on the rear by means of which… | ||
| 06-page091 | 10,000-mile test on a 3 1/2 Litre Bentley to prove a strengthened piston and new petrol pump. | ||
| View original record | K.S.S.2 To Hs. From Hs. c. to W. c. to C. c. to L. c. to Er. c. to R. Hs.4/HJ.20.11.33. X39524 10,000 MILES TEST ON 3 1/2 LITRE BENTLEY. 1.S.1V. car left Derby today and was calling at Conduit Street… | ||
| 06-page092 | Letter of appreciation and feedback from A. Pérouse following a test drive of a new Bentley Rolls Royce in Paris. | ||
| View original record | COPIE AUGUSTIN PEROUSSE 109 Rue de la Boetie PARIS Ingénieur des Mines AP/YD-1369 Automobiles Bentley Rolls Royce II Avenue George V Paris Paris, le 2 Décembre 1933 Messieurs, Je tiens à vous… | ||
| 06-page093 | Selection of spark plugs for Bentley cars, comparing Lodge and K.L.G. brands. | ||
| View original record | Y65152 To Roy. From Hs. C. Nor. C. By. Hs.2/MJ. 4.12.33. Re. Sparking Plugs For Bentley Car. Roy.5/MO.2.11.33. If we are asked today to order plugs for the Bentley car we should have no alternative… | ||
| 06-page094 | Standardisation of K.L.G. sparking plugs for the Bentley Car. | ||
| View original record | To Hs. from ROY. c. to H.T. c. to R.W. c. to E.V. ROY8/MG4.12.33 Sparking Plugs for the Bentley Car Further to ROY5/MG2.11.33, following our discussion this day with Mr. Hopps, of the Lodge Company, I… | ||
| 06-page095 | Standardization of sparking plugs for Bentley cars. | ||
| View original record | V-C-K-I-3 Roy. From Hm. c. to Wor. c. to E. c. to Hy. Hs.1/MA.5.12.33. Re. Sparking Plugs For Bentley Car. Roy.8/HC.4.12.33. We do not know where you are getting your information from but from… | ||
| 06-page096 | Bentley production, specifically exhaust valve failures due to leaded fuels and the subsequent modifications. | ||
| View original record | X41553 To WCR. from E. E.1/HP.6.12.33. c. Hs. Hy. uft. re Bentley Production. There are two points on the Bentley chassis in connection with which failures occurred at the last minute and it was… | ||
| 06-page097 | Failures and modifications to a silencer's sliding joint and intermediate expansion box. | ||
| View original record | - 2 - E.1/HP.6.12.33. Sliding Joint, and Intermediate Expansion Box of Silencer. ------------------------------------------------------ Failures were experienced in the welded joint on the end of the… | ||
| 06-page098 | Unresolved issues with the 3.5 Litre Bentley Production Chassis, including drive groan and oil leaks. | ||
| View original record | Hs [C. F. N. - Strikethrough] [Woyd - Strikethrough] XUM73. EP3/MH.7.12.33 re 3 1/2 LITRE BENTLEY PRODUCTION CHASSIS --------------------------------- I have now tested and accepted two of the above… | ||
| 06-page099 | Report page detailing persistent issues with gearbox rattle, horn button functionality, and gear lever vibration. | ||
| View original record | -2- EP3/MH.7.12.33 see our note (6) The rattle on pick up on top gear after about 30 m.p.h., which seems to emanate from the gear box, is still there. (noticed on 23A.C.). (7) No alteration appears to… | ||
| 06-page100 | Testing a higher compression larger inlet valve cylinder head for Bentley performance. | ||
| View original record | To Sg. from Ha/Rm. a. Wor. E. b. Hy. Rn. c. Ev. BENTLEY PERFORMANCE. We have now tested the higher compression larger inlet valve cylinder head to an 1sG. design. It will be observed that this gives… | ||
| 06-page101 | Power output graph for a 3 1/2 Litre Bentley engine. | ||
| View original record | UNIT B 48 3 1/2 LITRE BENTLEY POWER OUTPUT TEST (1) GROSS B.H.P. (CURVE B) MIXTURE 75% PET., 25% BENZ. EX. PIPE 4'3" D/P AS PER EN/2088 (2.10.31) (2) COMP. RATIO 6.85:1 (REC'D NO.2) MIXTURE 75% PET.,… | ||
| 06-page102 | Report on a higher compression cylinder head, pointing out a typo and suggesting a conference for the next Bentley batch. | ||
| View original record | To Hs. (Struck through) Sg. From Sg. Bentley Performance. Referring to Hs/Rm.MD.12.12.33 I am very much interested to read the report about the higher compression cylinder head with larger inlet… | ||
| 06-page103 | Correcting a typing error in mileage figures concerning Bentley engine performance. | ||
| View original record | To Sq. From Ba/Ha. c. to Gor. E. By. Hm. EV. Handwritten: X55526. File Hs/Hn. 7/HM.18.12.33. Bentley Performance. Referring to GgS/RI4.12.33, the typing error in the memo. was not in the 7,000 miles… | ||
| 06-page104 | Recommending an order for 50 sets of stellited K.L.G. 765A spark plugs for a Bentley car. | ||
| View original record | To Roy. From Hs/Rm. c. to For. c. to R. c. to Ry. Handwritten: 4/1/3 Hs/Rm.6/MJ.22.12.33. Handwritten: Y1G18 Re. Sparking Plugs for Bentley Car. Further to our Hs.1/MA.5.12.33., we understand that in… | ||
| 06-page105 | Test drive report and feedback on a demonstration Bentley car, No. B-154e, over a 450-mile journey. | ||
| View original record | HS To for. from Sg. Copy to F.H.Arthur re the Bentley. I used our demonstration car No.B-154e. over Christmas and drove it a total distance of about 450 miles. Generally speaking, I think it is a most… | ||
| 06-page106 | Cover note for a chart showing the relative B.HP developed at the road wheels on dynamometer for models 2-B-IV and B-23-AE. | ||
| View original record | A415536 Hs. Hs/Wym.11/KW1.1.34. The attached chart shews the relative B.H.P. developed at the road wheels on dynamometer on 2-B-IV and B-23-AE. Hs/H. Whyman. | ||
| 06-page107 | The allocation and potential modifications for the first 15 Bentley cars. | ||
| View original record | COPY. S/W - Hs/Rm. c. to W. or Sg. c. to E. By. c. to Mx. Bn. Cx.25/KW10.1.34. First 15 Bentleys. Hs/Rn7/KW.28.12.33. memo. In principle we agree with the contents of your You know of course that one… | ||
| 06-page108 | 22-gallon petrol tank and rear axle for Bentley chassis No. B-35-AE. | ||
| View original record | X 4553 BY SPT. Hs. HS/Skn. D/BP/HFL/OG12-1-34. Re: Bentley chassis No. B-35-AE - Hall. With reference to the 22 gallon petrol tank instructed as per YS.14682, kindly note this should have a sealed… | ||
| 06-page109 | Confirmation memo regarding the repair of a Bentley B-4-A unit and its specific components. | ||
| View original record | To RHC. Hs/CTS.12/KWD 2.1.34. BENTLEY - B-4-A UNIT. This is to confirm that the above unit is to be sent into the shop for repair. This unit is complete to specification RHC/MSC.11/AP.12.12.33, except… | ||
| 06-page110 | Fitment of a larger petrol tank to Bentley Chassis No. B-35-AY. | ||
| View original record | X4553 D/BP. Srt. Hs. EWT/Skn. HY/Cgh.1/G.13.1.34. RE: BENTLEY CHASSIS NO. B-35-AY. HALL. D/BP/HF.1/OG.12.1.34. We would refer you to our previous memo HY/Cgh.10/G.9.1.34. which deals with the question… | ||
| 06-page111 | List of suggested modifications for the first 15 Bentley cars based on servicing experience. | ||
| View original record | COPY. X4553 Hs. from Mx. MX10/T12.1.34. First 15 Bentleys. Cx25/KMO.1.34. ---------------- With regard to your request that we should deal with this question, having in mind the experience we have had… | ||
| 06-page112 | Modifications to Bentley cars to align them with production models, including an urgent request for a customer vehicle. | ||
| View original record | X45553 S/W. Hs/Rm. C. to Wor. Sg. C. to E.H. C. to Mx.Br. First 15 Bentleys. Cx15/KW18.1.34. With reference to Cx25/KW10.1.34, I wonder if you can yet let me have a reply regarding the 14 cars that… | ||
| 06-page113 | Offer and acceptance of a chassis delivery to Mr. C.W. Nichols of Smith & Sons. | ||
| View original record | Hs. (o. to Bn) (o. to Wst). Bly.4/HEM.20.1.34. re: C.W. Nichols, Esq., of Smith & Sons, Cricklewood, N.W.2. You will be interested to hear that I have been in touch with the above gentleman and… | ||
| 06-page114 | Response deferring a decision to 'Wor.' due to the implications on material supplies from production. | ||
| View original record | -2- MX10/T.12.1.34. I am afraid it does not come within my province to decide the questions asked in the penultimate paragraph of Cx's memo. Certainly with regard to the latter part as to when and how… | ||
| 06-page115 | Investigation into the cause of a 'boom' noise on a Bentley 3-B-IV at 3250 engine revs. | ||
| View original record | X4553 To Hs. from Hs/GWH. HA/GWH.9/KW.23.1.34. Re: Boom on Bentley - 3-B-IV. -------------------------- We have reduced the boom at 3250 engine revs by attention to the following - (1) Silencer… | ||
| 06-page116 | Fitting a higher geared axle and modified instruments to Bentley Chassis B-171-AE. | ||
| View original record | X 4553 B/EP. or BPs. [Strikethrough] or Sft. [Strikethrough] or Ier/Gen. [Strikethrough] c. Hs/Wst. BY/Cgh.1/G. 23.1.34. RE: BENTLEY CHASSIS B-171-AE. CAPT. ERIC BURT. D/BP/HP.10/OG.19.1.34. In view… | ||
| 06-page117 | Covering note forwarding a copy of a memo for review. | ||
| View original record | 14553 To. Hs. BY. SRH. EP. Mx. from Wor. Wor/T.26.1.34. Herewith copy of memo received from Bn (Bn2/T/25.1.34) which no doubt you will be interested to see. Wor. attd | ||
| 06-page118 | Test drive report on the first production Bentley B.65, noting an issue with wing rigidity. | ||
| View original record | Copy. Sg. from Bn. Copy to Hor. Bn2/WT25.1.34. The first production Bentley - B.65- which I drove on Tuesday was a very good car, and taking all points into consideration seemed better than any of the… | ||
| 06-page119 | Criticism of the difficulty starting a Bentley from cold, with a comparison to a Hillman Minx. | ||
| View original record | X4553 To Hs. from Sg. re Bentley. Copy to Hives I have seen quite a few criticisms of the difficulty of starting the Bentley from cold under cold weather conditions from an unheated garage. For… | ||
| 06-page120 | Issues with Bentley starter motors and the development of an improved version. | ||
| View original record | To Sg. From Hs. c. to Wer. Replying to Sg.25/E.26.1.34. It is realized that the starter motor on the Bentley is only just up to it's job. An improved starter motor has been designed and we expect to… | ||
| 06-page121 | The investigation and reduction of engine 'boom' on a Bentley 3-B-IV. | ||
| View original record | x4553 To Hs. from Hs/GWH. Hs/GWH.9/OKW.23.1.34. Re: Boom on Bentley - 3-B-IV. We have reduced the boom at 3250 engine revs by attention to the following - (1) Silencer mounting was choc-a-bloc. This… | ||
| 06-page122 | Design considerations for connecting rods and pistons for the 3 1/2 litre Bentley engine. | ||
| View original record | To Hs. from E. X 4553 E.6/HP.26.1.34. c. Sg. Wdr. By. 3 1/2 litre Bentley.- Connecting Rods and Pistons. Replying to your memos Hs.4/WJ.24.1.34 and Hs.5/WJ.24.1.34, we are of the opinion that we ought… | ||
| 06-page123 | Confirming a drawing will be issued for a piston pin size modification. | ||
| View original record | - 2 - E.6/HP.26.1.34. If you are in agreement with us on this matter we will issue a drawing next week covering the modification to piston pin size. E. | ||
| 06-page124 | Development of the 3½ litre Bentley power unit, proposing an experiment related to the crankshaft bearings. | ||
| View original record | [Handwritten] GRY See me I believe this has been done Hs [End Handwritten] To Sg. and Wcr. from E. X4553 E.6/HP.29.1.34. c. Hs. Hy. Bn. HV. 3½ litre Bentley. The development of the Bentley power unit… | ||
| 06-page125 | The testing of production Bentley cars, noting issues with front wing flapping and bonnet movement. | ||
| View original record | X4553 WOF. c. BY HS JES EV EP3/AGH.5.2.34 re BENTLEY CARS --------------- Having tested with JLG a few of the production cars now complete with bodies I find them generally quite good and compare… | ||
| 06-page126 | Vehicle performance issues including clutch shudder, rattles, boom period, and floorboard vibrations. | ||
| View original record | -2- EPS/H.5.2.34 (3) Clutch shudder and rattle in drive.- Chiefly when getting away on 2nd gear. Rumbling and rattling in drive is still manifest with finished cars. This varies with different cars… | ||
| 06-page127 | List of reported vehicle faults and suggested actions, continued from a previous page. | ||
| View original record | -3- (4) cont'd:- It has been suggested that the cut-out is not necessary. I certainly subscribe to this in view of the trouble and doubtful advantage. I suggest it should only be put on as an extra… | ||
| 06-page128 | Report from the U.S.A. on a Bentley valve spring failure, S.A.E. papers on 'Knee Action', and Chrysler suspension. | ||
| View original record | 7/4553 COPY OF REPORT RECEIVED FROM Ro. IN U.S.A. DATED 25.1.34. To Eg. from Hs/Rs. c. to Nor. c. to E. c. to By. c. to Da. c. to Hdy. Hs/Rs.28/KF.8.2.34. My time has been somewhat occupied in getting… | ||
| 06-page129 | Report from the U.S.A. on running issues found in a Bentley, covering ground clearance, valve springs, and axle problems. | ||
| View original record | X4583 COPY OF REPORT RECEIVED FROM Ra. in U.S.A. DATED 22.1.34. To Sg. from Ha/Ra. c. to HOR. c. to S. c. to By. c. to Da. c. to Hiv. c. to Hn. c. to EF. c. to Mx. Ha/Ra.18/KM.5.2.34. RUNNING OF… | ||
| 06-page130 | Brake and suspension performance, noting issues with body rattles and draughts, specifically for American conditions. | ||
| View original record | -2- (4) Brakes. Thawing to-day and in the slush the brake thumps were exceptionally bad, making driving in American traffic conditions most distressing in M.R. worse than Ferobestos for this trouble.… | ||
| 06-page131 | Requesting an update on the development and testing timeline for the 3 1/2-Litre Bentley power unit. | ||
| View original record | H3 X4553 To E. from Sg. Copy to Wor.Hs. HY.Bn.Ev. re 3 1/2-Litre Bentley. Sg21/25.2.34 Referring to E.6/HP.29.1.34 I note that the development of the Bentley power unit is waiting until the… | ||
| 06-page132 | Questioning a change to the radiator mounting on production Bentley cars, deeming it the opposite of an improvement. | ||
| View original record | To Hs. from Sg. Copy to Wor.P.Bmr. re Bentley Cars. X4973 Referring to EP3/MH.5.2.34 would you please let me know to-morrow when I am at Derby why on production cars a change was made in the radiator… | ||
| 06-page133 | Roughness effect of running a 3 1/2 litre Bentley engine with four bearings and requesting a report on 8-in-line engines. | ||
| View original record | [Handwritten: GRY X4553 Seame HS] W/S. To Sg. from K. K.8/HP.6.2.34. c.c. Hsr. Hs. Ey. Pu. Ev. re 3 1/2 litre Bentley. Replying to the last paragraph of your memo Sg.21/E.5.2.34. the running of the… | ||
| 06-page134 | Customer complaints regarding Bentley Chassis B.65-AE, including bonnet knock, vibration, and damper issues. | ||
| View original record | To Hs. X6553 7.2.34. Re. Bentley Chassis B.65-AE. R. Summers Esq. Visit to Mr. R. Summers. Complaints made by Mr. Summers. He complained bitterly of bonnet knock and the result of damage to the… | ||
| 06-page135 | Findings on various vehicle systems including exhaust, suspension, clutch, and carburettors. | ||
| View original record | -2- whilst at the Coachbuilders. They do not work loose on 10,000 mile tests, nor have they worked loose on the Bumper Chassis. Exhaust System. The nut of the bolt holding the snout was on its last… | ||
| 06-page136 | The training and placement of Mr. Dershow and its impact on Bentley car demonstrations. | ||
| View original record | Hs. from Wor. WorS/R.S.2.34. I believe Derschow arrived at Derby on Monday, and C. writes as follows:- "I presume your reason for suggesting this is in order to give Derschow or someone in London… | ||
| 06-page137 | Supply of spare parts for Bentley cars for private owners. | ||
| View original record | Hs. from Wor. Hd. S A GWH Seen x4583 Wor6/R.7.2.34. HS Spares for Bentley. C. wishes to consider the question of supplying a few spare parts for London, now that cars are getting into the hands of… | ||
| 06-page138 | Use of a driver for a 10,000-mile Bentley endurance test and a potential replacement. | ||
| View original record | x To Wor. From Hs. Hs.4/HJ.8.2.34. Replying to Wor.8/R.7.2.34. We are using Mr. Derschow as a driver for the Bentley car which is now running 10,000 miles in England. We expect this test to be… | ||
| 06-page139 | Follow-up telephone conversation regarding a dangerous braking complaint for a Bentley, chassis B-39-AE. | ||
| View original record | M...From EBS. c. to Sg. Wor. Hs. Mr. N. HS. x4553 FBS1/MO13.2.34. Re: Chassis No. B-39-AE. Mr. Payton of Birmingham. Dangerous braking complaint per FBS7/M05.2.34. KPY/MRIO.3.34 I telephoned to Mr.… | ||
| 06-page140 | Replacement of clutch components on the Open Trials Car B.1.AE. | ||
| View original record | X4553 GRY see me Messrs o.Hs [struck through] from Mr. Hx/T14.8.34. HS Re. First 15 Bentleys We now have the Open Trials Car B.1.AE in for modification. We have found it necessary to replace the… | ||
| 06-page141 | Replacing the clutch Friction Plate and Ferodos on an Open Trials Car B.1.AE. | ||
| View original record | To Mr W.A.C. G.H.H. from Mr. Re. First 15 Bentleys We now have the Open Trials Car B.l.AE in for modification. We have found it necessary to replace the Friction Plate and Ferodos to the clutch. I am… | ||
| 06-page142 | Dispatch of chassis 2-B-IV to Messrs. Park Wards for the fitting of lamps and horns. | ||
| View original record | To Bv. from Hs/FD. c. to Bn. X453 Hs/FD.4/KW.17.2.34. 2-B-IV. We have to-day despatched the above chassis to Messrs. Park Wards, complete with spare wheel and tools, etc. Bn. is arranging to have a… | ||
| 06-page143 | Wing and radiator movement on a Bentley, detailing tests to reduce it. | ||
| View original record | To Ag. From Ha/Gry. X4553 c. to Mor. c. to E. c. to Dy. c. to Da. c. to Hly. EH/Gry.17/NG.27.2.34. WING AND RADIATOR MOVEMENT - BENTLEY. When Bn. brought B-47-AE car up to Derby he complained of the… | ||
| 06-page144 | List of modifications and components to be fitted to a car. | ||
| View original record | To RHC. X-53 Fm/Gry.4/KW.2.3.34. 3-B-IV. Will you please fit to this car - (1) New Alum. floorboards with well for passenger. (2) Needle bearing in servo bridge. (3) High front engine mounting -… | ||
| 06-page145 | Requesting a Bentley Saloon, chassis B.47.AE, be made ready for collection. | ||
| View original record | Hs. (Or to Bm) X4553 Bly.32/HFM.26.2.34. re: B.47.AE. Bentley Saloon. Referring to our conversation today, as Rkn will be calling with B.AE. tomorrow evening, I have sent him a note asking him to… | ||
| 06-page146 | From Sg. to Hs. regarding a Bentley, requesting an answer to points raised in an earlier communication. | ||
| View original record | X4583 To Hs. from Sg. Copy to Wor. re Bentley. Sg19/B5.3.34 Referring to Hs/Rm.5/KW.3.3.34 I should be interested to know what the answer is to the points he raises in paragraphs 4 and 5. Sg. Sg | ||
| 06-page147 | Confirming that points mentioned in a previous report have been corrected on all production cars. | ||
| View original record | X455-3 To Sg. From Hs. C. to W.of. Hs.11/MJ.8.3.34. Replying to Sg.19/E.5.3.34. The points mentioned in paragraphs 4 and 5 of Hs/Rm.5/KW.3.334 have been corrected on all production cars. Hs. | ||
| 06-page148 | Revised list of jobs to be carried out on car 3-B-IV. | ||
| View original record | To RHC. X4553 Ha/Gry.16/KW.8.3.34. 3-B-IV. Our programme for this car has become somewhat altered. We send you herewith a complete list of jobs we should like carried out :- (1) Alum. floorboards with… | ||
| 06-page149 | Confirmation of a telephone call regarding a burnt-out clutch and a request for three replacement sets. | ||
| View original record | V4573 S/W......Hs. TALB/DEC.E.34 Re: R-19-AM. This is to confirm our telephone conversation of this afternoon to the effect that the above car burnt out its clutch on the LG Vinc Course when carrying… | ||
| 06-page150 | Request to fit a B-4-A Unit to a car to replace a unit damaged in America. | ||
| View original record | X 4583 To RHC. Ha/Gry.3/KW.16.4.34. 1-B-IV Will you please fit B-4-A Unit to this car in place of the unit which was damaged in America, Ha/Gry. | ||
| 06-page151 | Instructions to modify a B.IV engine from an American car for supercharger tests, listing existing faults and required parts. | ||
| View original record | X 4573 RHC. From Hs/Rm. Hs/Rm.7/MA.19.4.34. B.IV Engine ex. Car From America. We wish to use this unit for supercharger tests using the power plus blower to anticipate the troubles we shall experience… | ||
| 06-page152 | Cancelling a previous instruction and requesting parts for brake experiments on a car. | ||
| View original record | X4553 A To RHC. Ha/Gry.6/KW.24.4.34. 3-B-IV. We wish to cancel entirely our memo: Ha/Gry.16/KW.8.3.34, as we are going to use this car for brake experiments, and we should therefore like to fit all… | ||
| 06-page153 | Request to rebuild unit B.3 for chassis 4-B-IV with standard pistons and to chart the dimensions of the removed aerolite pistons for wear analysis. | ||
| View original record | To RHO. X453 Ha/Mths.13/KW. 25.4.34 No. B.3 Unit - Chassis 4-B-IV. Will you please rebuild this unit with standard pistons, EB.1299, to replace the aerolite pistons you have just removed. With regard… | ||
| 06-page154 | Proposed improvements and standardisation for the next series of 3 1/2-Litre Bentley cars. | ||
| View original record | To Wcr. from Sg. Copy to Hs.E.H. C.Bn.Gry. 3 1/2-Litre Bentley. Referring to the further batch of 200 sets of material which I have agreed to your ordering straight away and to any improvements that… | ||
| 06-page155 | Mr. Rose Richards agreeing not to enter his 3½-litre Bentley in the Le Mans Contest. | ||
| View original record | S/W....MGR. c. to E. --> Rs. Ply. [Handwritten Signature] [Handwritten: X453] C12/C1.5.34 You will be interested to know that in deference to our wishes, Mr. Rose Richards has kindly agreed not to… | ||
| 06-page156 | Circulating reports regarding chassis B.99.AK for consideration and reply. | ||
| View original record | Bowering File M. from Wor. Rs. Hy. O. to Mft. Wor2/R.2.5.34. re: Chassis No. B.99.AK - E. Baring. I attach copy of C23/Cl.5.34., together with copy of HB's report mentioned therein. Would each of you… | ||
| 06-page157 | Internal memorandum regarding an investigation into two separate car fires on different chassis. | ||
| View original record | S/W. Wor....from C. re Chassis No. B.99.AE...E.Bering,Esq. You will have received a copy of Hb's report in regard to this car having caught fire. The car has been moved to the Bentley Service Station… | ||
| 06-page158 | Customer's car that burst into flames, detailing the incident and the suspected cause of flooding. | ||
| View original record | COPY. 1. H. 2. C. Copies to:- EWT. N. MEMORANDUM NO. B18. Hbl/MC30.4.34. Evelyn Baring, Esq., 8, Bishopsgate, E.C.2. B-99-AE. Comp.del. 8.3.34. T. & M. Saloon Visited 28.4.34. Owner's no. London Wall… | ||
| 06-page159 | Analysis of carburetter flooding issues and potential fire risks on a Bentley Chassis. | ||
| View original record | Wor. Hs. E. BY.13/G.3.5.34. File BENTLEY CHASSIS. Referring to Wor.2/R.2.5.34. and C.23/C.1.5.34. attached to same, the trouble in question can be co-related with two main factors :- (a). The S.U.… | ||
| 06-page160 | Typed document page mentioning the occurrence of carburetters. | ||
| View original record | - 2 - BY.13/G.3.5.34. carburetters occur. BY. | ||
| 06-page161 | Enquiry into the cause of fires on Bentley cars, related to S.U. carburettor flooding. | ||
| View original record | To Mr. [redacted] and Mr. [redacted] From E. c.c. Mr. [redacted], Mr. [redacted], Mr. [redacted], JHS. re Fires on Bentley. With reference to memo C23/0.1.5.34, I have now held an enquiry into this… | ||
| 06-page162 | Investigation into the possible sources of external ignition on a vehicle. | ||
| View original record | - 2 - external ignition. The possible sources we think are:- (1) Loose sparking plug terminals. (2) Ventilation hole to L.T. make and break casing. (3) Space around condenser leaving to L.T. make and… | ||
| 06-page163 | Modifying Bentley carburettor terminals and the float chamber drainage system to prevent flooding and sparking. | ||
| View original record | - 3 - replaced by a spring washer and milled nut giving a firm grip on the end of the H.T. conductors, and we should like information confirming, or otherwise that the two Bentley cars in question… | ||
| 06-page164 | Proposing a redesign of the float chamber and mechanism for future Bentley models. | ||
| View original record | - 4 - sources of external ignition under the bonnet we think the job should be as safe as it can be made. For future Bentleys we propose to redesign the floatchamber and mechanism to follow RR.… | ||
| 06-page165 | The replacement of spring wires on Bentley cars to prevent fires, using screw-on terminal nuts and washers. | ||
| View original record | By. Roy. Z. Hs. c. to Sft. V4553 Wor/N.8.5.34. Re: Fires on Bentley. Will By. please release, and will Roy, please order a supply of screw-on terminal nuts and washers to replace the spring wires at… | ||
| 06-page166 | Cause and prevention of fires on 3 1/2 Litre Bentley cars. | ||
| View original record | COPY. To Sg. From Hs. c. to C. c. to U. c. to Wor. c. to P. c. to Hy. c. to RP. c. to Ex. c. to JJS. c. to Sft. c. to Ba. FIRES ON 3 1/2 LITRE BENTLEY. We arranged at Ely. that Mr. GWB. should meet… | ||
| 06-page167 | Investigation memo detailing the circumstances of a Bentley catching fire upon starting. | ||
| View original record | To Sg. From Hs/GWH. c. to Wor. c. to E. c. to By. c. to BrS. c. to KP. c. to Mx. c. to Hd. Ra. E. Baring Esq., Bentley. I interviewed Mr. Baring to try and ascertain the reason why his Bentley caught… | ||
| 06-page168 | Suspected causes of a vehicle fire related to petrol leaks and ignition. | ||
| View original record | -2- Hs/GEH.11/WJ.9.5.34. Cont'd. during Mr. Baring's preparations for starting. All this time petrol would be leaking from the float chamber. (2) The continued working of the petrol pumps for some… | ||
| 06-page169 | Modifications to prevent fires on Bentley cars by addressing loose sparking plug terminals and carburettor flooding. | ||
| View original record | S/S....H c. to Sg. Wor. Hs. HY. MP. Mx. JLR. C1/C9.5.34 Re FIRES ON BENTLEY. EL/HPS.5.34 Sg. and I have discussed your memo. which sets out clearly the possibilities of petrol being ignited in the… | ||
| 06-page170 | Engine fires on a Bentley, proposing modifications to the float-chambers and needles. | ||
| View original record | GWH see me #S W/S. To G. from E. E.6/HP.9.5.34. c.c. Mr. Nor. Hs. By. NP. Mr. JLE. Sft. re. Fires on Bentley - K.1/HP.5.5.34. ------------------------------------- Referring to your memo G.1/C.9.5.34,… | ||
| 06-page171 | Procedures for investigating fires on a 3 1/2-litre Bentley, specifically regarding the carburettor's flooding device. | ||
| View original record | G N H C15/C10.5.34 S/W Hs. c. to Sg. Wor. By. EP. MX. JLR. Sft. Hd. FIRES ON 3 1/2-litre BENTLEY. E6/HP9.5.34 & Hs12/HJ9.5.34. Confirming our conversation on the telephone this afternoon, Sg. and I… | ||
| 06-page172 | Customer's request for a guarantee that her Bentley car will not boil if taken to the Alps. | ||
| View original record | x4553 Hs. ---- BY/Cgh.5/G.10.5.34. RE: BENTLEY CHASSIS FOR MRS. COATALEN. --------------------------------------- This customer is asking us to guarantee that the Bentley car which she is purchasing… | ||
| 06-page173 | The cooling system safety margin on a Bentley chassis for Mrs. Coatalen and a future reduction in radiator size. | ||
| View original record | To By. from Hs/Rm. Hs/Rm.1/KT.11.5.34. BENTLEY CHASSIS FOR MRS. COATALEN. Referring to BY/Cgh.5/G.10.5.34. we have never had a car with such a high margin of safety with regard to the cooling system… | ||
| 06-page174 | Confirming an agreed policy regarding fires on the 3.5 litre Bentley. | ||
| View original record | W/S. To C. from E. c.c. Hs. E.2/HP.11.5.34. re Fires on 3½ litre Bentley. Replying to your memo C.15/c.10.5.34. I believe my memo of even date clears up the position, but in any case we will do as you… | ||
| 06-page175 | Modifications to the carburettor and float chamber on the 3 1/2 litre Bentley to address fire risks. | ||
| View original record | GWH W/S. To - S. from E. c. Mr. POT. Mr. Hy. Mr. AP. Mr. Jan. Sft.Hd. Fires on 3½ litre Bentley. ------------------------- Referring to Hs.12/WJ.9.5.34, in view of the S.U. Company accepting… | ||
| 06-page176 | Investigation into a fuel system ignition issue, detailing potential causes and proposed modifications. | ||
| View original record | - 2 - E.1/HP.11.5.34. If any part of the fuel system should come adrift it should be rendered impossible for the fuel to be ignited. In this respect we do not believe that Mr Baring's car was… | ||
| 06-page177 | Issues with an oil union and water drain tap being shaken loose, leading to loss of oil pressure. | ||
| View original record | E. From Hs/Rm. c. to Wor. c. to By. Hs/Rm.13/MA.14.5.34. Some little time ago we shook the oil union on the section side of the pump loose. This resulted in almost complete loss of oil pressure. Last… | ||
| 06-page178 | Adding petrol pipes to the float-chamber on Bentley cars to prevent fires from fuel spillage. | ||
| View original record | X6553 To BY. from E/JNR. c. Ha/Rm. HHG. E/JNR.1/HP.10.5.34. re Fires on Bentley. We send you herewith drawing LeC.3911 showing the addition of petrol pipes fitted to the top of the floatchamber, to… | ||
| 06-page179 | Reporting on parts shaking loose on two different Bentley cars during road tests. | ||
| View original record | X4553 To E. from Hs/Rm. Hs/Rm.12/KW.16:5:34. Parts Shaking Loose on the Bentley. Referring to E.2/HP;16.5.34, the union on the suction side of the pump came loose on Bentley I car when it was being… | ||
| 06-page180 | Requesting further details on which engine an oil pump union came loose and a water drain tap vibrated open. | ||
| View original record | To Ha/Rm. from E. C. Wor. By. K.2/HP.16.5.34. Referring to your memo HS/Mm.13/MA.14.5.34, we should like to know on which engine the oil pump union came loose and the water drain tap vibrated open,… | ||
| 06-page181 | Request to fit a clutch pedal operation, new front springs, and a prop shaft damper to a car. | ||
| View original record | To RHC. X 453 Hs/Gry.13/KW.23.5.34. 1-B-IV. Will you please fit to this car - (1) Clutch Pedal operation EX.18393. (2) New Firth's front road springs. (3) Prop. Shaft Damper to EX.13090. Hs/H.Grylls. | ||
| 06-page182 | The positioning of horns on a Bentley car. | ||
| View original record | HS X453 To HY. from Sg. re Horns on Bentley Car. Copy to Wor.Hs.H. Rn.Ex. Thanks for HY.4/0.18.5.34. I am interested and pleased to note that you agree that the horns as fitted on Hn's car were… | ||
| 06-page183 | Tests to eliminate excessive headlamp vibration on Bentley chassis models. | ||
| View original record | Hs/Rm. X4553 Hs/FD.9/KW.25.5.34. Bentley Head Lamp Vibration. We have carried out a series of tests on B-23-AE and 3-B-IV to eliminate the excessive amount of Head Lamp movement. B-23-AE - Streamlined… | ||
| 06-page184 | Efforts to brace lamp pillars and reduce movement. | ||
| View original record | -2- HH/FD.D/KW.25.5.34. The second move was to make up and fit a cross member between the frame, opposite the lamp pillars, the ends of the member fitting tight up to the steel plates, using the same… | ||
| 06-page185 | Defect report on road springs for chassis No. B-29-AR. | ||
| View original record | Hd. By. Hs. Rm X4553 D/BP48/0028-5-34. Re: Chassis No. B-29-AR. With reference to the defect report received in respect of this chassis in which it is stated that some road springs were returned to us… | ||
| 06-page186 | Meeting memo discussing failures on the Bentley Car, including front axle cracking, and the decisions made to rectify them. | ||
| View original record | To R. From Hs. C. to Dy. C. to H.I. C. to Ex. C. to RM. C. to Hs. C. to W.A. C. to ROF. BENTLEY CARS. A discussion was held this morning, present By., Dy., RM., Hm. and Hs., to go over the failures on… | ||
| 06-page187 | Front spring failures, brake jaggers, and modifications to carburetter float chambers. | ||
| View original record | -2- (2) Front Axles. All the evidence goes to show the failure of the front springs is brought about due to brake jaggers. It was agreed that with either Woodhead or Firth springs we should add an… | ||
| 06-page188 | Listing proposed design features and work requests for Phantom and Bentley models. | ||
| View original record | To E. X4583 Hs/Rm.10/KW.29.5.34. We have a number of features on which we know exactly what we want if we could get somebody to draw for us. In most cases we have actually made a mock-up of the parts… | ||
| 06-page189 | List of design features and improvements for various car models, including the Terraplane and 20/25. | ||
| View original record | -2- (5) Cantilever pedals on the lines of the Terraplane. (6) Front springs shackled at the rear. (7) Carburetter controls cantilevered off the crankcase. (8) Boxed frame front end. (9) More flexible… | ||
| 06-page190 | Complaints about Bentley headlamp vibration and a proposed fix involving a cross member. | ||
| View original record | x4583 To E. Hs/Rm. 8/KW. 31.5.34. Bentley Head Lamp Vibration. We have had a number of unofficial complaints of the front wings flapping on the Bentley. Actually we know that this is partially a frame… | ||
| 06-page191 | Work order for an engine replacement and brake alterations on a Blue Coupe. | ||
| View original record | REC. X4573 Hs/Rn:15/KW.5.6.34. 3-B-IV - Blue Coupe. This engine unit is badly in need of replacement as it has light alloy rods which are liable to fail, and fine pitch Textolite gears. We want to… | ||
| 06-page192 | Instruction to manufacture a set of lighter gauge lamp brackets for testing as an alternative. | ||
| View original record | X 4553 To EHJ. Hm/FD.8/KW. 8.6.34. 4-B-IV. Will you please instruct a set of Bensport Lamp Brackets of lighter gauge to be made up from EX.10034, to suit the new type of lowered cross member and… | ||
| 06-page193 | Results of a Bentley engine test, identifying the piston as the weakest component and proposing further tests with improved designs. | ||
| View original record | To E. c. to HDF. c. to Ry. c. to Mx. We have been trying to do a Type Test on the Bentley; the attached report shows the result of the first 50 hours running. This confirms our present knowledge that… | ||
| 06-page194 | Analysis of engine issues including increased oil consumption and low power output following a 60-hour endurance test. | ||
| View original record | -2- He/7JH.2/KW.11.6.34. The oil filter and crankcase lower half were examined at 50 hrs, but no sign of bearing metal was found. The unit was stripped and examined at the completion of the 60 hours.… | ||
| 06-page195 | The condition of a Bentley.6 engine unit after a 60-hour endurance test. | ||
| View original record | To Hs/Rm. from RHC. RHC.11/BEG.6.34. BENTLEY.6 UNIT Report on condition of engine unit stripped for examination after 60 hrs. endurance test. Crankcase & Bearings Crankcase top and bottom halves -… | ||
| 06-page196 | Condition report detailing the state of various engine components. | ||
| View original record | -2- RHC.11/EEG.6.34. Valves and Fittings Slight pitting on exhaust valve faces. Valve springs in good condition. Slight wear on rocker pads. Tappets in good condition. Cylinders Cylinder Head -… | ||
| 06-page197 | Diagrams showing failures on Bentley 6 pistons after a 60-hour endurance running test. | ||
| View original record | BENTLEY 6 PISTONS AFTER 60 HOURS ENDURANCE RUNNING ES 1293 No 2 (2 VIEWS) CRACK IN ROOT OF WEBS CRACK RUNNING FROM HOLE TO SCRAPER GROOVE No 3 METAL BROKEN AWAY AROUND ENG STOP No 4 (2 VIEWS) CRACKED… | ||
| 06-page198 | Graph plotting the oil consumption of a Bentley engine during an endurance test. | ||
| View original record | B.V. 37 OIL CONSUMPTION OF BENTLEY ON ENDURANCE TEST UNIT B.6. SPEC RHO/WSZ 9/JM 23/5/34 STANDARD PISTONS EB 1299. CONDITIONS OF RUNNING:- 4000 R.P.M. FULL THROTTLE. AIR AND EXH. SILENCERS FITTED.… | ||
| 06-page199 | Power curve for Unit B.6 after a 53-hour endurance test, showing Brake Horsepower and Brake Mean Effective Pressure against RPM. | ||
| View original record | POWER CURVE BV 38 UNIT B.6. AFTER 53 HRS ENDURANCE TEST. SPEC. RHC/WSC. 9/JM. 23/5/34. STANDARD CYL. HEAD C/R 6.67:1 OPEN INTAKE AND EXHAUST. TIMING. I.O. 3.6° B.T. I.C. 49.1° AB. E.O. 49.1° B.B. E.C.… | ||
| 06-page200 | Photographic layout of two sets of upper half engine bearings, numbered 1 to 7 and 1 to 6. | ||
| View original record | UPPER HALVES <- 1 to 7 -> UPPER HALVES <- 1 to 6 -> | ||
| 06-page201 | Three modifications to be made to a car, specifically concerning brake levers, servo cams, and the cross steering tube. | ||
| View original record | To RHJ. X 4583 Ha/Gry.7/KM.14.6.34. 2-B-IV. When this car is here next Tuesday we should like to make the following modifications :- (1) Fit 20/25 brake levers to the front ropes. piece Nos. C.53078 &… | ||
| 06-page202 | Crankshaft modifications for a supercharged Bentley engine, specifically the reduction of bearings. | ||
| View original record | X453 To Sg. and WOF. from E. c. Hs. By. E.3/HP.16.6.34. re Bentley. In connection with the scheme for adding the centrifugal supercharger to the Bentley engine, we are also proposing to alter the… | ||
| 06-page203 | Requesting the creation of a new camshaft to improve the power output of a high output Bentley engine. | ||
| View original record | To RHC. From Hs/Rm. 4553 Hs/Rm.3/MJ.23.6.34. HIGH OUTPUT BENTLEY ENGINE. We want to try one more camshaft with a timing to improve the power output on the Bentley engine. The M. engine camshaft has… | ||
| 06-page204 | Blueprint diagram of a long camshaft for a Bentley. | ||
| View original record | HS 1443 CAMSHAFT LONG BENTLEY INLET CAM HS 971 EXHAUST CAM E 59272 Exhaust leads Inlet by 114° General DIMENSIONS to EB 1085 Main Diagram Labels: 114° C/LN TDC I/Ex @ KEYWAY 6° SIN Y 16° 50° IO 32°… | ||
| 06-page205 | List of work instructions for a Bentley III - Blue Coupe. | ||
| View original record | X453 To RHC. Hs/Rm.16/KW.22.6.34. BENTLEY III - BLUE COUPE. Will you please carry out the following work to this car :- (1) Improve timing gears and re-set camshaft slipper wheel, the centre plate of… | ||
| 06-page206 | Proceeding with experimental trials for the Roller Bearing Longitudinal Transmission Shaft Joint Sch.3647. | ||
| View original record | To Df. from E. c. Hs. Ps. Ey/SS. R GRY X4553 E.L/HP.22.6.34. 3B.4. Roller Bearing Longitudinal Transmission Shaft Joint N. Sch.3647. With regard to the above, Mr. has now come to the conclusion that… | ||
| 06-page207 | Production troubles with the Bentley synchro mesh cam. | ||
| View original record | X4573 RHC. From Ha/Rm. Ha/Rm.6/MA.23.6.34. BENTLEY PRODUCTION TROUBLES. The rattle in the synchro mesh cam when starting off is still the worst feature on the Bentley. We understand from Sg. that they… | ||
| 06-page208 | Request to manufacture a set of light push rods for a Bentley. | ||
| View original record | X 4553 To REC. Ha/Suth.20/KM.2.7.34. Light Push Rods for Bentley. Will you please make us a set of light push rods to Bm.1452/3. Ha/Suth. | ||
| 06-page209 | Summary of a discussion on potential design improvements for a Bentley vehicle, specifically Halford tappets and rubber engine mounting. | ||
| View original record | x453 To E. Hs/Rm.16/KW.2.7.34. Bentley Design Work. Confirming the talk round the Bentley between Hs., E., Lid., and Rm. the following is a summary of the points raised :- (1) Features which could… | ||
| 06-page210 | Immediate and experimental vehicle developments including chassis, engine, and braking improvements. | ||
| View original record | -2- (c) Head lamp and wing movement. There is no doubt that a second dropped cross member between the lamp pillars reduces this trouble by 50%. As it does not appear to be a very difficult job to get… | ||
| 06-page211 | List of experiments and improvements including supercharging, system silencing, and clutch engagement. | ||
| View original record | -3- Ha/Rn:16/KW. 2.7.34. (4) Supercharging experiments. (5) Increased silence of intake, fan and exhaust system. (6) Improved clutch engagement. Ha/Rn: | ||
| 06-page212 | Design and performance of a Bentley gudgeon pin plug and a decision not to alter it for production. | ||
| View original record | Xers3 By: c. to WGR. c. to E. HS/Rm.3/KW.2.7.34. Form of the Head of the Bentley Gudgeon Pin Plug. With reference to RYD/C.27.6.34. We have a drawing of the Bentley gudgeon pin button dated 29.9.28.… | ||
| 06-page213 | Modifications for Bentley front wings and lamps, specifically concerning a dropped crossmember arrangement. | ||
| View original record | To BT. from Da. K6553 Da.1/HP.7.7.34. C. for Mr. Hs. Mby RMH. Bentley - Front Wings and Lamps. Herewith is N.Sch.4124 shewing the arrangement of the dropped crossmember joining the attachment of the… | ||
| 06-page214 | Recommendations for modifying a Bentley car to increase ground clearance for use under Colonial Conditions. | ||
| View original record | To Sg. X6553 Hs/Rm.10/KW.11.7.34. Bentley Car to be run under Colonial Conditions. Referring to your telephone conversation of this morning. We have been into the matter and would recommend the… | ||
| 06-page215 | Parts shaking loose on a Bentley, proposing locking plates for the oil pump. | ||
| View original record | To E.W. from E/JNH. c. Ha/Rm. E/JNH.2/HP.13.7.34. Parts shaking loose on the Bentley. We send you herewith:- LeC.4035 showing locking plates fitted to the unions on both sides of the oil pump, and… | ||
| 06-page216 | Fix for excessive headlamp and wing movement on the Bentley. | ||
| View original record | To HMC. 4553 Ha/Rm.23/KW.17.7.34. Head Lamp and Wing Movement on the Bentley. As you know, head lamp and wing movement on the Bentley is one of the most objectionable features of the car. As a result… | ||
| 06-page217 | Proposed improvements to the Bentley chassis for increased rigidity and other updates. | ||
| View original record | X4553 To Sg. and Wor. From E. c. Hs. Hy. Cx. Bn. re Bentley. We have appreciated for some time that the most urgent improvement we should like to act on the Bentley chassis is a more rigid chassis… | ||
| 06-page218 | Car body design in relation to wheelbase, passenger space, and wind resistance. | ||
| View original record | - 2 - E.2/HP.21.7.34. the wheelbase, and this space might be usefully added to the room available for the body, and would at the same time be good from a wind resistance point of view in bringing the… | ||
| 06-page219 | To insert a drawing number concerning a Bentley into a previous memo. | ||
| View original record | To Sg. and Wor. from E. c. Hs. Hy. Cx. re Bentley. Will you please note the drawing No. to be inserted in the second paragraph of our memo E.2/HP.21.7.34, is N. Sch.4124. E.1/HP.23.7.34. E. | ||
| 06-page220 | Request to dismantle a gearbox and a slipper wheel for inspection and examination. | ||
| View original record | REC. X6553 EB/FD.5/KW.31.7.34. 1-B-IV. Will you please have the gearbox dismantled for RM's inspection, and at the same time will you please have the slipper wheel dismantled and examined. Em/F.Dodd. | ||
| 06-page221 | Cause of 'front wing dither' on Bentley cars, attributing it to body rigidity rather than the wing and running board design. | ||
| View original record | X4513 Other correspondence in X.4013 (Paris Trials Car) & X.4533a (10,000 mile Tests [Handwritten initials: Rm] Copy to [REDACTED] Hs. Mr [REDACTED] RWR/IB.31.8.34. Re:- BENTLEY - Front Wing Dither.… | ||
| 06-page222 | Instructions to fit a dropped front cross member to vehicle 1-B-IV for experimental testing. | ||
| View original record | RHC. C. to Lea. 4553 Hm/Rm.14/KW. 7.9.34. Will you please fit the dropped front cross member to 1-B-IV. For experimental purposes we should like packing pieces to be fitted so that the cross member… | ||
| 06-page223 | Notification of specification modifications regarding the fitting of Mintex LAM Servo Linings. | ||
| View original record | To RHC. x6553 Ha/Gry.10/KW.13.9.34. Specification Modifications. ------------------------ We have fitted in the garage Mintex LAM Servo Linings to 2-B-IV, 3-B-IV and B-23-AE. Ha/Gry. | ||
| 06-page224 | Positioning of headlamp brackets and a request for their removal on a Bentley car. | ||
| View original record | X 6583 To Sg. c. to Hn. Hs/Rm.3/KW.13.9.34. Re Bentley Lamp Brackets outside Frame. I have found that in view of your request that we should remove the outside headlamps from this car before it went… | ||
| 06-page225 | Experiments on a cross member to reduce Bentley wing movement and frame jellying. | ||
| View original record | To Wor. C. to E. X45T3 HE/Rm.2/KW.14.9.34. Bentley Wing Movement & Frame Jellying. We have now concluded a series of experiments on the cross member between the lamp brackets which was designed to… | ||
| 06-page226 | Tribute to the 3 1/2 Litre Bentley in an 'Autocar' magazine article. | ||
| View original record | 2453 To Hs. from Sg. Copy to B.G.Cx. Pn.Bly.Ekl. There is a very interesting and good tribute to the 3 1/2 Bentley under the heading of 'Readers' Experiences' on Page 481 of this week's 'Autocar',… | ||
| 06-page227 | Outstanding work and required updates for two experimental Bentley chassis. | ||
| View original record | To RHC. √4573 Hs/Rm.11/KW.20.9.34. CAR WORK GENERAL. Owing to pressure from the Spectre and the two Bentley chassis you are at present building we have got rather behindhand on keeping our… | ||
| 06-page228 | List of modifications and repairs for various car chassis, including brake relining and engine component replacements. | ||
| View original record | -2- (4) Air silencer stay to Lec.4098. 19-G-IV. This car is being sent over to France for the fitting of the Dubonnet parts. The brakes are not safe and should be re-lined before the car leaves.… | ||
| 06-page229 | List of vehicle components and modifications with associated reference or scheme numbers. | ||
| View original record | -3- Ha/Rm.11/KW.20.9.34. (5) Clutch centre replaced by R.R. Borg & Beck. (6) Cross member, N.Sch.4168. 2-H-IV. (1) High comp. cylinder head, Es.1372, Inlet valve EX.11474 Exhaust valve EB.1325. (2)… | ||
| 06-page230 | Development and testing of a high-compression Bentley single cylinder head for competition work. | ||
| View original record | To Wd. 44706 X 4553 Hs/Rm.7/KW.20.9.34. Bentley Single Cylinder Tests. We have been running a 9 to 1 compression ratio Bentley head with a view to developing it for competition work. We attach a… | ||
| 06-page231 | Obtaining and fitting spare pistons for a 4-B-IV engine. | ||
| View original record | To HIC. +4573 Ha/Rm/18/KW.28.9.34. 4-Bearing Crank Engine. 4-B-IV Engine Pistons. We are obtaining two spare pistons to replace the two that were cracked out of B-7 unit after 10,000 miles running in… | ||
| 06-page232 | Letter proposing a comparative performance test between a new Bugatti and a Bentley at Brooklands. | ||
| View original record | Hs. Bt8/1.10.34. Dear Hs, I am not quite certain whether I have been corresponding with you or Rm. as I have reason to believe you wrote the last note I received, but it was signed Hs/Rm. In any case… | ||
| 06-page233 | Letter discussing the comparative performance of a Bentley against a 3.3 Bugatti, focusing on engine compression ratios and hill climb times. | ||
| View original record | 4633 3 To Bt. from Hs/Rm. Hs/Rm.8/KW.2.10.34. Dear Bt., Thank you for your note Bt.8/1.10.34. We are certainly interested in the 3.3 Bugattis because these are competitors of ours in France. So far we… | ||
| 06-page234 | The parts to be fitted to a 4-Bearing Crank Engine upon its construction. | ||
| View original record | X4553 To RHC. Hs/Rm.12/KN.2.10.34. 4-Bearing Crank Engine. Will you please fit the following to this engine when it is built :- (1) Aerolite pistons ex B.7 unit. Two replacements provided for two… | ||
| 06-page235 | List of experimental investigation work for the Bentley & 20/25 models. | ||
| View original record | x45T 3 2.10.34. EXPTL. INVESTIGATION WORK BENTLEY & 20/25. (1) Front End Chassis Movement. (a) Wing stiffening. (b) Cross member stiffening. (c) Bumper bar damping. (d) Damping with radiator. (e)… | ||
| 06-page236 | List of action items and comparisons for various automotive components and systems, with assigned personnel. | ||
| View original record | -2- (6) Spectre Slow Running. (a) Camshafts. New Spectre short duration. (b) Compare 20/25 with Bentley and R.R. induction systems. (c) Will fabric coupling reduce chunks in the drive, over-run… | ||
| 06-page237 | List of development points and responsible personnel for clutches, supercharging, and brakes. | ||
| View original record | -3- (11) Clutches. (a) Repeat B.10 clutch which is O.K. (b) Perfect oil seal on rear main bearing housing. (c) New lightened clutch for Bentley B-23-AK centre, N.Sch.4190. Grylls. (12) Supercharging.… | ||
| 06-page238 | List of development points and tests for clutches, supercharging, and braking systems. | ||
| View original record | -3- (11) Clutches. (a) Repeat B.10 clutch which is O.K. (b) Perfect oil seal on rear main bearing housing. (c) New lightened clutch for Bentley B-23-AK centre, N.Sch.4190. Grylls. (12) Supercharging.… | ||
| 06-page239 | List of engineering tasks related to vehicle components including engine running, steering, suspension, exhaust, and pistons. | ||
| View original record | -2- (6) Spectre Slow Running. (a) Camshafts. New Spectre short duration. (b) Compare 20/25 with Bentley and R.R. induction systems. (c) Will fabric coupling reduce chunks in the drive, over-run… | ||
| 06-page240 | Experimental investigation work plan for the Bentley & 20/25 models, covering brakes, axle tramp, and clutches. | ||
| View original record | x483 2.10.34. EXPTL. INVESTIGATION WORK. BENTLEY & 20/25. (1) Brakes Fading. Direct to 4 Wheels. (a) Stiffer drums (water exclusion). (b) M.Z. lining (Servo also of this test). (c) Steel shoes. (d)… | ||
| 06-page241 | Experimental investigation work plan for the Bentley & 20/25 model. | ||
| View original record | X6JT 3 2.10.34. EXPTL. INVESTIGATION WORK BENTLEY & 20/25. (1) Front End Chassis Movement. (a) Wing stiffening. (b) Cross member stiffening. (c) Bumper bar damping. (d) Damping with radiator. (e)… | ||
| 06-page242 | List of proposed engine improvements and development areas, page 4. | ||
| View original record | -4- (14) Engine Silence. (a) Silent tappets - Cadillac and Halford. (b) Elimination of valve spring surge. (c) Textolite gears. (d) Boom periods. Light clutch, H.Sch.4190. 4-bearing crankshaft.… | ||
| 06-page243 | List of development points and tests for servo brakes, chassis, engine, and exhaust systems. | ||
| View original record | -2- (4) Cont'd. (c) Servo tests. Improvement in existing servo. Eliminate fading, value of ball bearing bridge. Frictional value of pin drive. Reduction in tendency to squeak. (d) Direct to 4 wheels.… | ||
| 06-page244 | Internal document listing engineering tasks for suspension, steering, and engine performance, with personnel assigned. | ||
| View original record | -3- (9) Suspension. (a) Check Cadillac bump and re-bound on the front. (b) Can Chevrolet check their damping once pot has been assembled. (c) Compare Spectre roll rod stiffness with that of Cadillac.… | ||
| 06-page245 | Technical memorandum detailing considerations for engine silence, pistons, and supercharging. | ||
| View original record | -4- (12) Engine Silence. (a) Silent tappets - Cadillac and Halford. (b) Elimination of valve spring surge. (c) Textolite gears. (d) Boom periods. Light clutch, N.Sch.4190. 4-Bearing crankshaft.… | ||
| 06-page246 | List of proposed improvements categorised by power output, weight saving, and durability/reliability. | ||
| View original record | -5- (15) Improved Power Output. (a) Do we want 1.5 inlet. Do we gain from moving valves together. If not, alum. head. (b) Larger radius cam followers on standard shaft. (c) Facing forward intake,… | ||
| 06-page247 | Request to create a scheme for reducing the weight of the dropped front cross member by at least a third. | ||
| View original record | XG1T3 To RHC. Hs/Rm.10/KW.3.10.34. Dropped Cross Member between the Lamps: We think that the dropped front cross member between the lamps is unnecessarily heavy. Will you please get out a scheme for… | ||
| 06-page248 | Summary of modifications and additions requested for car model 3-B-IV. | ||
| View original record | x45T3 To RHC. Ha/Gry.10/KW.2.10.34. 3-B-IV. Herewith a summary of the modifications we have previously asked for on this car and also certain additions which we should be glad if you would fit. (1)… | ||
| 06-page249 | Extract from an owner's complaint report regarding a seized piston and scored cylinder bore. | ||
| View original record | Rm Hs. Wd. Hd. X4583 BY/16/N.3.10.34. Re: Owner's Complaint Report No.50 - B-111-BL - Dr.Ashton . The following is an extract from the above report:- 'On test No.6. cylinder shewed loss of… | ||
| 06-page250 | Investigation into an engine seizure on Bentley Chassis B.111-BL. | ||
| View original record | Hs. Mr. Hd. X41T3 BY.1/G.11.10.34. BENTLEY CHASSIS B.111-BL. RE SEIZING UP OF ENGINE. Referring to my previous memo on the above subject, in which I suggested that since we had had two failures of… | ||
| 06-page251 | Experiments to resolve headlamp and wing movement on the Bentley, focusing on one-piece wings. | ||
| View original record | To SG. From Hs/Rm. c. to WGR. c. to G. c. to S. c. to A. c. to Hy. c. to Ds. c. to Bm. c. to Fg. c. to V. Head Lamp & Wing Movement on the Bentley. ======================================= We have now… | ||
| 06-page252 | The testing of a boxed cross member and a Rover frame stabilizing bumper bar. | ||
| View original record | -2- (b) Boxed Cross Member between the Headlamps. When the front of the frame vibrates torsionally the headlamps try to move with a similar frequency. As they are supported on relatively long tubes… | ||
| 06-page253 | The positive effects of a stabiliser in reducing front end movement and the subsequent design of a bumper. | ||
| View original record | -2- This stabiliser produces a very marked reduction in the amount of wing and lamp movement on the standard Bentley. Fitting it alone without single piece wings or the cross member between the lamps… | ||
| 06-page254 | Tests to reduce headlamp and wing movement on the Bentley, and a request for a new stabiliser design. | ||
| View original record | To E. From Ha/Ra. c. to Dn. c. to Hy. K 4533 Ha/Ra.16/KW.11.10.34. Bentley Headlamp & Wing Movement. ------------------------------- Attached is a report on the tests we have been making to reduce the… | ||
| 06-page255 | Investigation into the amount of headlamp and front wing movement on a Bentley car. | ||
| View original record | To E. from Hs/Wym. c. to Da. c. to Hy. Hs/Wym.16/KW.11.10.34. Bentley Headlamp & Wing Movement. We have been investigating the amount of headlamp and front wing movement on Bentley car 1-B-IV. We… | ||
| 06-page256 | Comparative table of frame and headlamp movement with different stabilisers and wing types. | ||
| View original record | 1 Standard Wings Fitted. Frame Movement. N/S Headlamp Movement. O/S Headlamp Movement. Headlamp Cross Member 16% reduction 11% reduction 3% reduction Rover Stabiliser 21% * 27.3% * 20.8% * Wilmot *… | ||
| 06-page257 | Front view photograph of an experimental car with an exposed engine and unfinished bodywork. | ||
| View original record | RCI 426 | ||
| 06-page258 | Experimental department report on an endurance test of a Standard Bentley Unit. | ||
| View original record | EXPERIMENTAL DEPARTMENT REPORT REFERENCE :- Ha/PJH.2/KW.11.6.34. Subject of Report :- Endurance test on Standard Bentley Unit. General Conclusions :- Unit completed 60 hrs. running without outward… | ||
| 06-page259 | 60-hour endurance test performed on a standard Bentley engine unit. | ||
| View original record | RE/VJH.2/KM.11.6.34. Endurance Test on Standard Bentley. A Bentley unit has recently successfully completed 60 hours endurance running on the test bed. The conditions of the test were :- Continuous… | ||
| 06-page260 | Bar chart comparing wing and lamp movement relative to the radiator across eight different test configurations. | ||
| View original record | TEST ① STANDARD WINGS, TORQUE DAMPERS STANDARD TEST ② HEADLAMP X MEMBER FITTED TEST ③ WILLMOT STABILIZER FITTED TEST ④ ROVER TEST ⑤ HEADLAMP X MEMBER FITTED, WILLMOT STABILIZER FITTED TEST ⑥ ROVER… | ||
| 06-page261 | Bar chart comparing wing and lamp movement relative to the radiator under different test configurations. | ||
| View original record | TEST (9) ONE PIECE WINGS TORQUE DAMPERS STANDARD (10) HEADLAMP X MEMBER FITTED (11) WILMOT STABILIZER FITTED (12) ROYER STABILIZER FITTED (13) HEADLAMP X MEMBER FITTED. WILMOT STABILIZER FITTED. Rover… | ||
| 06-page262 | Response regarding a customer complaint about wings, proposing a new bumper design as a solution for Mr. Fairey's car. | ||
| View original record | x4553 Ev. From Hs/Rm. c. to Hn. c. to E. Hs/Rm.4/MA.12.10.34. Replying to Ev.2/IH.3.10.34., you will see from Hs/Rm.14/KW.11.10.34., that one piece wings are a little if no better than the standard… | ||
| 06-page263 | Experiments to solve headlamp and wing movement on Bentley cars, including a new stabilising bumper bar. | ||
| View original record | Rm x4853 To Hs. from Sg. Copy to Nor. C.E. [Struck through: File. Dr.Hy.] Head Lamp and Wing Movement on the Bentley. I am in receipt of Hs/Rm.14/KW.11.10.34 and have carefully noted the results of… | ||
| 06-page264 | Directive to reduce the weekly production output for 20/25 HP and Bentley models. | ||
| View original record | Sft. from Wor. AEM. By. Roy: He. D/BP. COPY. 26553 Wor.1/R.17.10.34. OUTPUT. 20/25 HP: Will you kindly arrange to reduce the output of the above from 16 to 15 per week from Works to test as soon as… | ||
| 06-page265 | Increasing the poundage of shock absorbers on Bentley cars to reduce front-end shimmy. | ||
| View original record | To Hs. from Sg. re Bentley's. Sg2/E17.10.34 When talking to Sr. of Paris yesterday/about Bentley cars in France, he mentioned that, as soon as they receive a Bentley car from England, they increase… | ||
| 06-page266 | Providing charts and photographs detailing the condition of a Bentley No.6 Unit after stripping it down for examination following extensive testing. | ||
| View original record | To Hs/Rm. from RHC. x4553 RHC.9/MS18.10.34. Bentley No.6. Unit. Herewith as requested, are charts and photographs shewing the condition of bearings, pistons, crankshaft, etc. on stripping the above… | ||
| 06-page267 | Potential solution for a Bentley's 'front end jellying' by adjusting shock absorbers. | ||
| View original record | To Sg. x6553 Hs/Rm.2/KW.20.10.34. Bentley Front End Jellying. Replying to Sg.2/E.17.10.34. Since we have no alternative cure to offer at the moment we agree that it would be worth while increasing the… | ||
| 06-page268 | The torsional vibration of a Bentley frame and the effectiveness of Harmonic Stabiliser Bumpers. | ||
| View original record | 44553 Not Sent Out EXPERIMENTAL DEPARTMENT REPORT REFERENCE :- Ha/FJH.4/KW.20.10.34. Subject of Report :- Torsional vibration of Front End of Bentley Frame and effect of Harmonic Stabiliser Bumpers.… | ||
| 06-page269 | Bentley chassis vibration tests concerning the torsional vibration of the frame forward of the dash. | ||
| View original record | To E. c. to Nor. c. to By. Re/FJH.4/KW.20.10.34. BENTLEY CHASSIS VIBRATION TESTS. This report is additional to Re/Wym.16/KW. 11.10.34. and concerns the torsional vibration of the Bentley frame forward… | ||
| 06-page270 | Stabiliser tests, comparing Wilmot and Rover models and their effects on frame frequency and vibration damping. | ||
| View original record | -2- RE/PJH.4/KW.20.10.34. The frequencies were later determined by eye approximately by running the engine light with cylinders Nos. 3 and 4 only firing. The results were - (1) Wilmot Stabiliser… | ||
| 06-page271 | Comparison of Rover and Wilmot stabilisers, noting frequency and damping characteristics. | ||
| View original record | -3- Hm/PJL.4/KW.20.10.34. In the case of the Rover Stabiliser, the difference in frequency between the loose and tight conditions is of the order of 100/min. The effect of the tightness of these nuts… | ||
| 06-page272 | Series of graphs comparing chassis front end vibration test results under various conditions. | ||
| View original record | CHASSIS FRONT END VIBRATION TESTS. TESTS CARRIED OUT ON 1.B.X AT ROVER'S WORKS, COVENTRY 7/10/34. CONDITIONS:- STANDARD WINGS. ENGINE TORQUE DAMPERS STD. AXLE SHOCK DAMPERS STD. RADIATOR MATRIX… | ||
| 06-page273 | Requesting the fitting of a Floating Oil Intake to a B-4 Unit once it is removed from the test bed. | ||
| View original record | 4583 To RHC; c. to Hs/Hths; Ha/Rm.10/KW. 23.10.34: Floating Oil Intake. Will you please fit this to B-4 Unit as soon as it is removed from the test bed. Hs/Rm: | ||
| 06-page274 | Type test of a Bentley engine unit, analysing main bearing wear and test results. | ||
| View original record | X453 To E. from Dm/Rm. c. to Mar. c. to Ry. c. to Elt. c. to Hx. c. to Isl. TYPE TEST OF BENTLEY UNIT. With a view to ascertaining the mechanical reliability of the present standard Bentley unit, we… | ||
| 06-page275 | Big end bearing performance, a new crankshaft design for Bentley models, and balance weight adjustments. | ||
| View original record | -2- Rs/Ra.1/Kn.24.10.34. The big end bearings demonstrated what we have previously thought, that as long as they do not break up due to overheating, as they have done on recent 10,000 miles tests,… | ||
| 06-page276 | Summary memo detailing the various test runs, rebuilds, and component changes for a B-6 unit. | ||
| View original record | To E. c. to Nor. c. to Ry. c. to Ht. c. to Mx. c. to Hd. B-6 UNIT. This unit while doing its type test ran for a total of 126 hrs. 40 mins., of which 91 hrs. were at full throttle. For full… | ||
| 06-page277 | Bentley 6-cylinder big-end bearings after endurance and general running tests. | ||
| View original record | 16-10-37 BENTLEY 6 BIG-END BRGS. W/TT AFTER 100 HRS F.T. ENDURANCE AND 100 HRS. GENERAL RUNNING | ||
| 06-page278 | Photograph of Bentley 6 main bearings after endurance and general running tests. | ||
| View original record | BENTLEY 6 MAIN BRGS. W/MT AFTER 100 HRS. F.T. ENDURANCE AND 100 HRS GENERAL RUNNING 16-10-74 | ||
| 06-page279 | Table of measurements detailing the wear on a Bentley 6 Unit crankshaft and its bearings after endurance testing. | ||
| View original record | BENTLEY 6. UNIT — AFTER 100 HRS. ENDURANCE & 100 HRS GENERAL RUNNING CRANKSHAFT EX. PRODUCTION V.C.M ALL BEARINGS 1/4 WHT BENELL 6.3 - (NORMAL) TABLE OF MEASUREMENTS: .002" STD. CLEARANCE | | WHEN… | ||
| 06-page280 | Table of measurements showing cylinder wear on a Bentley 6-unit block after endurance testing. | ||
| View original record | BENTLEY 6. UNIT CYLINDERS. SHOWING WEAR AFTER 100 HRS ENDURANCE AND 100 HRS GENERAL RUNNING CYL. BLOCK E55728 TABLE OF MEASUREMENTS: Headers: North, Centre, Crown Sub-headers: 1A, 1B, 1C, 1D (North),… | ||
| 06-page281 | Dimensions of pistons and rings for a Bentley 6-cylinder unit after endurance and general running tests. | ||
| View original record | BENTLEY 6 UNIT. DIMENSIONS OF PISTONS AND RINGS - 100 HOURS ENDURANCE AND 100 HOURS GENERAL RUNNING PISTON DIAMETERS EB 1299 EB 1025 Des. Size. 3.247 Dia +0/-1/2 DIMENSIONS TAKEN ON SKIRT PISTON | A |… | ||
| 06-page282 | Blueprint graph showing the oil consumption of a Bentley engine during an endurance test. | ||
| View original record | OIL CONSUMPTION OF BENTLEY ON ENDURANCE TEST. B.V. 37 UNIT B.6. SPEC RHC/WSC 9/JM 23/5/34. STANDARD PISTONS EB 1299. CONDITIONS OF RUNNING: 4000 RPM. FULL THROTTLE. AIR AND EXH. SILENCERS FITTED. 90°C… | ||
| 06-page283 | Power curve graph for Unit B.6, plotting Brake Horsepower and Brake Mean Effective Pressure against RPM following a 53-hour endurance test. | ||
| View original record | POWER CURVE UNIT B.6. AFTER 53 HRS ENDURANCE TEST SPEC. R.R.C./WSC 9/JM. 23/5/34 STANDARD CYL. HEAD. C/R 6.67:1 OPEN INTAKE AND EXHAUST. TIMING. IO 36° BT. IC 49° AB EO 49° BT. EC 45° AT BHP R.P.M.… | ||
| 06-page284 | The torsional vibration of a Bentley frame's front rod and the effect of harmonic stabiliser bumpers. | ||
| View original record | 4653 EXPERIMENTAL DEPARTMENT REPORT REFERENCE:- Hs/PJH.14/KW.24.10.34. Subject of Report:- Torsional Vibration of Front Rod of Bentley Frame, and effect of Harmonic Stabiliser Bumpers. General… | ||
| 06-page285 | Bentley chassis vibration tests, concerning the torsional vibration of the frame forward of the dash. | ||
| View original record | To E. c. to Mor. c. to By. x4153 Ha/PJH.14/KW.24.10.34. BENTLEY CHASSIS VIBRATION TESTS. This report is additional to Ha/Tym.16/KW. 11.10.34, and concerns the torsional vibration of the Bentley frame… | ||
| 06-page286 | Stabiliser tuning, issues with a Wilmot Breeden Bumper design, and tests to prevent frame deflection. | ||
| View original record | -2- HS/FJH,14/KW. 24.10.34. This shows that the stabilisers are tuned quite close to the frame frequency. A bad feature of the Wilmot Breeden Bumper is that the friction in the system is determined by… | ||
| 06-page287 | Request for torsion and inertia data for the latest Bentley production crankshaft for comparison with the 4-bearing shaft. | ||
| View original record | K.W.33 To H.C. Ha/Gry.17/KW.26.10.34. 4-Bearing Engine. We find in comparing the figures of stiffness and inertia of the 4-bearing shaft with previous results that we have not got any figures for the… | ||
| 06-page288 | Comparison table of ground clearance measurements for various car models. | ||
| View original record | To Hm/Hs. c. to K. 46553 HS/FD./KW.29.10.34. Ground Clearance on 18-G-IV 25 HP. 4 Pass. 28-EX 40/50 5 Pass. 3-B-IV Bentley 4 Pass. 1-B-I Spectre 5 Pass. Essex 6 4 Pass. Cadillac 5 Pass. Under front… | ||
| 06-page289 | Various power loss experiments conducted on a Bentley engine. | ||
| View original record | x4553 29.10.34. Various Power Loss Experiments on Bentley. The object of these experiments was to find what losses we might expect through induction restrictions with our latest engines giving a… | ||
| 06-page290 | The effects of air silencer and induction pipe modifications on engine performance. | ||
| View original record | -2- With the air silencer removed and just the bends fitted the larger Bend gives a slight increase over the standard Bend at 2500 r.p.m. but is below the power output given when the carburetter… | ||
| 06-page291 | Comparison of standard cam followers with 'R' followers, detailing effects on valve timing and power. | ||
| View original record | -3- Curve B.V.58 shows a comparison of the standard cam followers and the followers used for the cam shaft recently used having "R" engine cam forms. The radius of the "R" followers is larger than the… | ||
| 06-page292 | Graph showing the performance effect of varying inlet valve sizes on a Bentley engine. | ||
| View original record | EFFECT OF VARYING INLET VALVE SIZE (BENTLEY) UNIT: B.4. HIGH COMPRESSION ALUMINIUM CYLINDER HEAD COMPRESSION RATIO = 7.39:1 EXHAUST VALVES 1.200 DIA AEROLITE "RACING" PISTONS NO AIR SILENCER ① 1.500… | ||
| 06-page293 | Graph showing the effect of varying inlet valve size on engine performance for a Bentley unit with a complete air silencer fitted. | ||
| View original record | EFFECT OF VARYING INLET VALVE SIZE (BENTLEY) UNIT. B.4 COMPLETE AIR SILENCER FITTED. ALL OTHER CONDITIONS AS FOR CURVES SHOWN ON BV 53. ① 1.500 DIA. INLET VALVES ② 1.450 DIA. INLET VALVES. B.H.P.… | ||
| 06-page294 | Graph showing the effect of different air silencer configurations on engine power output for a Bentley. | ||
| View original record | EFFECT OF AIR SILENCER ON POWER OUTPUT (BENTLEY) UNIT-B.4. HIGH COMPRESSION ALUMINIUM CYLINDER HEAD COMPRESSION RATIO = 7.39 : 1 EXHAUST VALVES 1.200 DIA. INLET VALVES 1.500 DIA. AEROLITE 'RACING'… | ||
| 06-page295 | Graph plotting the effect of different intake bend configurations on engine power output for a Bentley Unit B.4. | ||
| View original record | EFFECT OF INTAKE BEND ON POWER OUTPUT (BENTLEY) UNIT - B.4 ① NO AIR SILENCER NO INTAKE BEND (CURVE ① ON B.V.55) ② LARGER DIA (3.000") INTAKE BEND (AIR SILENCER REMOVED) ③ STANDARD INTAKE BEND (AIR… | ||
| 06-page296 | Graph comparing engine power (BHP) and BMEP against RPM for standard versus small bore induction pipes on Unit B4. | ||
| View original record | POWER COMPARISON OF INDUCTION PIPES B.V.57 UNIT:- B4 HIGH COMPRESSION ALUMINIUM CYLINDER HEAD COMPRESSION RATIO = 7.39:1 EXHAUST VALVES 1.200 DIA. INLET VALVES 1.500 DIA. AEROLITE 'RACING' PISTONS NO… | ||
| 06-page297 | Comparison graph of standard and 'R' type camfollowers for a Bentley engine. | ||
| View original record | COMPARISON OF STANDARD & 'R' TYPE CAMFOLLOWERS (BENTLEY) UNIT: B.4 HIGH COMPRESSION ALUMINIUM CYLINDER HEAD COMPRESSION RATIO . 7.30 : 1 EXHAUST VALVES 1.200 DIA. INLET VALVES 1.500 DIA. NO AIR… | ||
| 06-page298 | Fitting Jackall jacks, a new body design for a Bentley, and concerns over increased weight and customer preferences. | ||
| View original record | v6553 To Ev. from Hs/Rm: Hs/Rm.23/KW.30.10.34. Jacks: Replying to your note about the Jackall We do want to test some of these on a Bentley and if we do not like the well being removed from the… | ||
| 06-page299 | Additional weight on a 4-B-IV model, luggage platforms, and proposals for a standardised Saloon. | ||
| View original record | -2- Hs/Rs. 28/KF.30.10:34. We quite appreciate that some of the additional weight on 4-B-IV is due to the method of arranging the back with the additional platform for luggage. I shall be very… | ||