Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Proposal to revive a single cylinder engine test unit for chassis engine development. | ||
| View original record | Rm X4706 To WCR. from E. c. Hs. By re Single Cylinder Units for Chassis Engine Development. The utility of cylinder engine test units for experimental work is generally admitted, and from time to time… | ||
| scan0002 | Sending blueprints for a Single Cylinder Test Unit for car engine development. | ||
| View original record | X4706 To DY. from E/JNR. c. Wor. Hs. re Single Cylinder Test Unit for Car Engine Development. We send you herewith the following blueprints: LeC.3605. 3606. 3607. 3608. so that the detailing of the… | ||
| scan0003 | Accompanying drawings for a Single Cylinder Unit, detailing the contact breaker, driving discs, and camshafts. | ||
| View original record | x4706 To BY. from E/JNR. c. Wor. Hs. E/JNR.1/HP.22.11.33. Single Cylinder Unit. We send you herewith drawings: LeC.3701 - showing the contact breaker and drive. LeC.3704 - Assembly of driving discs.… | ||
| scan0004 | Accompanying diagrams related to a Single Cylinder Test Unit. | ||
| View original record | X4706 To BY. from E/JNR. c.c. Wor. Hs. E/JNR.6/HP.5.12.33. re Single Cylinder Test Unit. We send you herewith: LeC.3616 - Cylinder Head and Variable Valve Lift Mechanism. LeC.3625 - Rocker Diagram for… | ||
| scan0005 | Drawing LeC.3739, showing an experimental head for a single cylinder test unit which is being covered by a patent specification. | ||
| View original record | X4706 To BY. from E/JNR. E/JNR.2/HP.16.12.33. c. Hs. re Single Cylinder Unit. We send you herewith drawing: LeC.3739 showing an experimental head for the single cylinder test unit. This is the new… | ||
| scan0006 | Material choice for the crankcase of a single-cylinder engine test unit. | ||
| View original record | PX4706 CHP See me To Hs. } from E. By. } E.2/HP.13.2.34. HS re Single Cylinder Chassis Engine Test Unit. We find that the upper half of the crankcase of this unit has been made in aluminium although… | ||
| scan0007 | Urgent request to supply a short cross rail and fit a Farnborough Indicator to the Kestrel Single Cylinder No. 2 Bed. | ||
| View original record | Mr. Peskett. x4706 Hs/Ryce.12/KW.5.3.34. Kestrel Single Cylinder No. 2 Bed. Would you please supply a short cross rail and fit the Farnborough Indicator on it, as on No. 4 Bed. This is urgently… | ||
| scan0008 | Test report on a 20/25 single-cylinder unit detailing performance, lubrication issues, and adjustable valve controls. | ||
| View original record | x4706 To Sg. From Hs/CHP. c. to Wcr. c. to E. c. to By. Hs/CHP.2/KW.21.3.34. 20/25 SINGLE-CYLINDER UNIT. This engine has now completed 16½ hours running on the test-bed. A large percentage of this… | ||
| scan0009 | Oil leakage problems and outlining future engine testing work. | ||
| View original record | -2- HS/CHP.2/KW.21.3.34. We have been troubled with excessive oil leakage from the valve lift adjustors on the rocker cover, the crankcase breather and the flywheel end of the crankshaft. The first… | ||
| scan0010 | Performance graph for a 20/25 single cylinder engine. | ||
| View original record | V1696 FIG. 20/25 SINGLE CYLINDER ENGINE. STD. BENTLEY TURBULENT CYLINDER HEAD (EB 1517) COMPRESSION RATIO - 6.44. AEROLITE PISTON ZENITH TRIPLE DIFFUSER CARBURETTOR (32% CHOKE). VALVE LIFT - .400"… | ||
| scan0011 | Justifying the use of roller bearings over plain bearings in a 20/25 HP single cylinder unit. | ||
| View original record | X4706 To Sg. from E. c.c. Mr. Hs. Dy. K.1/HP.27.3.34. re 20/25 HP. Single Cylinder unit. Replying to your memo Sg6/E.26.3.34, there is a special reason for fitting roller instead of plain bearings to… | ||
| scan0012 | Questioning the use of a non-standard roller bearing crankshaft in a 20/25 single cylinder test unit. | ||
| View original record | X4706 HS To E. From Sg. Copy to Wor.Hs. E.Dx. re 20/25 Single Cylinder Unit. I have read with interest Hs/CHP.2/KW.21.3.34. There is one point which struck me particularly and which I do not… | ||
| scan0013 | New inlet valve rocker for a Ramp Head single cylinder car engine test bed unit. | ||
| View original record | CHP x46/06 To Hs. from E/PSN. c. By. NHO. E/PSN.1/HP.9.4.34. Ramp Head Single Cylinder Car Engine Test Bed Unit. We send you herewith a print of LeC.3870 showing a new inlet valve rocker which will… | ||
| scan0014 | Modifications to a ramp head single cylinder car engine test unit. | ||
| View original record | X4706 To DY. from E/PSN. c. Hs. LR. E/PSN.3/HP.17.4.34. Ramp Head Single Cylinder Car Engine Test Unit. We send you herewith LeC.3871 showing modifications to the ramp head of the single cylinder car… | ||
| scan0015 | Testing modified valves and valve sizes on a Ramp Head Single Cylinder Car Engine test unit. | ||
| View original record | X4706 To Hs. from E/PSN. c. LR. RHC. E/PSN.2/HP.17.4.34. Ramp Head Single Cylinder Car Engine test unit. We send you herewith a print of LeC.3879 showing modified valves for the ramp head on this… | ||
| scan0016 | Letter to Rudge Whitworth Motor Cycle Co. proposing a meeting to exchange engine performance data. | ||
| View original record | Y4706 Expl. Dept. Hs/18.MJ. 11th. May, 1934. Mr. Woollard, c/o. The Rudge Whitworth Motor Cycle Co., Crow Lane, COVENTRY. Dear Mr. Woollard, I am anxious to know whether you would be agreeable for us… | ||
| scan0017 | Letter to Norton Motor Cycle Co. Ltd. about purchasing a 500 c.c. single-cylinder racing engine for test purposes. | ||
| View original record | X4706 Hs/Rm.4/KW. Exptl. Dept. 19th May, 1934. The Norton Motor Cycle Co.Ltd., BIRMINGHAM. Dear Sirs, We are considering purchasing one of your Motor Cycle Engines for Single Cylinder Test Bed work.… | ||
| scan0018 | Letter from Norton Motors Ltd. regarding a meeting to discuss balancing equipment. | ||
| View original record | PLEASE ADDRESS ALL COMMUNICATIONS TO THE FIRM & NOT TO INDIVIDUALS. Norton Motors Ltd. TELEPHONES ASTON CROSS 0776, 0777, 0778. TELEGRAMS "NORTOMO, BIRMINGHAM." A.B.C. CODE 5TH EDITION. X4706… | ||
| scan0019 | Letter to Norton Motors Ltd. arranging a works visit for a Mr. Skinner. | ||
| View original record | X4706 Exptl. Dept. Hs/Rm.3/KW. 24th May, 1934. Messrs. Norton Motors Ltd., Bracebridge Street, BIRMINGHAM 6. For the attention of Mr. Skinner. Dear Sirs, We thank you for your letter of May 23rd, from… | ||
| scan0020 | Letter from Rudge-Whitworth Limited regarding a 500 c.c. racing engine, with drawings and a cost estimate. | ||
| View original record | SUCCESSORS TO Rudge-Whitworth Limited. EDWARD DE STEIN. CHAIRMAN. SIR HERBERT E. BLAIN, C.B.E. DEPUTY CHAIRMAN. FRANK G. WOOLLARD, MANAGING DIRECTOR. Coventry TELEGRAMS, RUDGE. COVENTRY. TELEPHONE… | ||
| scan0021 | Second page of a continued letter to Rudge-Whitworth Ltd. regarding an engine order. | ||
| View original record | Continued Letter to Rudge-Whitworth, Ltd. Sheet No. 2. and magneto, provided we are favoured with your order within the next fortnight so that it may be put through with another order for engines… | ||
| scan0022 | Proposal to purchase a Rudge-Whitworth motorcycle engine to research 4-valve cylinder heads. | ||
| View original record | To Wor. from Hs. X4706 Hs.9/KW.29.5.34. Single Cylinder Work. We want to purchase a Rudge-Whitworth racing motor cycle engine of 500 c.c. displacement. This is slightly smaller than the Bentley and… | ||
| scan0023 | Letter to Rudge-Whitworth Ltd. requesting a drawing of a test bed coupling and confirmation of a brake type. | ||
| View original record | Exptl. Dept. Hs/Rm.1/KW. 31st May, 1934. Messrs. Rudge-Whitworth Ltd., (Tech. Development Dept.) COVENTRY. For the attention of G. Hack, Esq. Dear Sirs, Thank you for your letter of the 28th May. We… | ||
| scan0024 | Short memo authorising the ordering of a unit with a covering order due to an approximate price. | ||
| View original record | Roy: 4706 Hs/Rm.2/KW.31.5.34. With reference to the attached letter, we have Wor's permission to order this unit. You will note that only an approximate price is quoted, but they want a covering order… | ||
| scan0025 | Proposal to purchase a Rudge-Whitworth motorcycle engine for single-cylinder research work. | ||
| View original record | To Worp from Hs. (Worp is struck through) [Handwritten]: RM Please ask Roy to order HS Single Cylinder Work. We want to purchase a Rudge-Whitworth racing motor cycle engine of 500 c.c. displacement.… | ||
| scan0026 | Letter to Norton Motors Ltd. concerning the purchase of one of their motorcycle engines. | ||
| View original record | X4786 Exptl. Dept. Hs/Rn.14/KW. 7th June, 1934. Messrs. Norton Motors Ltd., Bracebridge Street, BIRMINGHAM 6. For the attention of Mr. Skinner. Dear Sirs, Referring to our correspondence regarding the… | ||
| scan0027 | Letter from Norton Motors Ltd. regarding the purchase of one of their motorcycle engines and arranging a meeting. | ||
| View original record | PLEASE ADDRESS ALL COMMUNICATIONS TO THE FIRM & NOT TO INDIVIDUALS. Norton Motors Ltd. TELEPHONES ASTON CROSS 0776, 0777, 0778. TELEGRAMS "NORTOMO, BIRMINGHAM" A.B.C. CODE 5TH EDITION. BRACEBRIDGE ST,… | ||
| scan0028 | Letter to Messrs. Norton Motors Ltd. confirming a visit on the 12th inst. | ||
| View original record | x4706 Exptl. Dept. Hs/Rm.10/KW. 9th June, 1934. Messrs. Norton Motors Ltd., Bracebridge Street, BIRMINGHAM6. Dear Sirs, Thank you for your letter of the 8th inst. We hope to visit you on Tuesday… | ||
| scan0029 | Letter to H.R. Ricardo regarding 4-litre Bentley cylinder head development and single-cylinder engine research. | ||
| View original record | Exptl. Dept. Hs/Rm/23/KW. 11th June, 1934. H.R. Ricardo, Esq., Messrs. Ricardo & Co., Engineers (1927) Ltd., Bridge Works, Old Shoreham, SUSSEX. Dear Mr. Ricardo, You will remember that some little… | ||
| scan0030 | Letter from Harry R. Ricardo of Ricardo & Co. to W. A. Robotham regarding the scheduling of a meeting. | ||
| View original record | DIRECTORS: H.R. RICARDO, F.R.S. THE VISCOUNT COMBERMERE. SIR A. H. MCMAHON, G.C.M.G., G.C.V.O. H. A. HETHERINGTON. P. C. KIDNER. RICARDO & CO., ENGINEERS. (1927) LIMITED. LONDON OFFICE: 21, SUFFOLK… | ||
| scan0031 | Letter to H.R. Ricardo of Ricardo & Co. Engineers, confirming a visit. | ||
| View original record | x4706 Exptl. Dept. HS/Rm.15/KW. 14th June, 1934. H.R. Ricardo, Esq., Messrs. Ricardo & Co., Engineers, (1927) Ltd., Bridge Works, Old Shoreham, Sussex. Dear Ricardo, Thank you for your letter of the… | ||
| scan0032 | Letter from Ricardo & Co., Engineers confirming a meeting with W. A. Robotham. | ||
| View original record | DIRECTORS: H. R. RICARDO, F.R.S. THE VISCOUNT COMBERMERE. SIR A. H. MCMAHON, G.C.M.G., G.C.V.O. H. A. HETHERINGTON. P. C. KIDNER. X470b RICARDO & CO., ENGINEERS. (1927) LIMITED. LONDON OFFICE: 21,… | ||
| scan0033 | Letter from Norton Motors Ltd. confirming an agreement to supply a racing engine for experimental purposes. | ||
| View original record | PLEASE ADDRESS ALL COMMUNICATIONS TO THE FIRM & NOT TO INDIVIDUALS. Norton Motors Ltd. TELEPHONES ASTON CROSS 0776, 0777, 0778. TELEGRAMS "NORTOMO, BIRMINGHAM" A.B.C. CODE 5TH EDITION. BRACEBRIDGE ST,… | ||
| scan0034 | Letter from Norton Motors Ltd. discussing engine development, experimental engines, and potential collaboration. | ||
| View original record | Norton Motors Ltd Birmingham. CONTINUATION TO Messrs. Rolls-Royce Ltd. DATE 13th June 1934 PAGE 2 So far as the purchase of the engine is concerned, as the writer pointed out to Mr. Robotham, we are… | ||
| scan0035 | Page 3 of a letter from Norton Motors regarding a proposed collaboration on an engine. | ||
| View original record | Norton Motors Ltd Birmingham. CONTINUATION TO Messrs. Rolls-Royce Ltd. DATE 13th June 1934 PAGE 3 we are an equally desirable and worthy concern as your own personnel and we hope that collaboration in… | ||
| scan0036 | Letter to Norton Motors Ltd. concerning the purchase of an engine and the limited information that can be shared from subsequent tests. | ||
| View original record | X4706 Exptl. Dept. Hs/Rm.5/KW. 19th June, 1934. Messrs. Norton Motors Ltd., Bracebridge Street, BIRMINGHAM 6. Dear Sirs, We thank you for your letter of the 13th June. We note that if you supply us… | ||
| scan0037 | Letter outlining terms for a potential engine supply, covering publicity restrictions, payment, and a proposed meeting. | ||
| View original record | -2- Hs/Rm.5/KW.19.6.34. We are entirely in agreement that no publicity of any sort shall be undertaken in connection with this engine without mutual arrangements between ourselves. We should like to… | ||
| scan0038 | Letter from Norton Motors Ltd. regarding the loan of an engine for testing. | ||
| View original record | PLEASE ADDRESS ALL COMMUNICATIONS TO THE FIRM & NOT TO INDIVIDUALS. Norton Motors Ltd. TELEPHONES ASTON CROSS 0776, 0777, 0778. TELEGRAMS "NORTOMO. BIRMINGHAM." A.B.C. CODE 5TH EDITION. BRACEBRIDGE… | ||
| scan0039 | Letter to Norton Motors Ltd. arranging a meeting with their technical representatives. | ||
| View original record | X6786 Exptl. Dept. Hs/Rm.10/KW.22.6.34. 22nd June, 1934. Messrs. Norton Motors Ltd., Bracebridge Street, BIRMINGHAM, 6. For the attention of Mr. Smith. Dear Sirs, We thank you for your letter of the… | ||
| scan0040 | Letter to H.R. Ricardo of Ricardo & Co. discussing a recent visit, exchanging a paper for review, and requesting prints. | ||
| View original record | 74706 Exptl. Dept. Hs/Rm.20/KW. 28th June, 1934. H.R. Ricardo, Esq., Messrs. Ricardo & Co., Engineers (1927) Ltd., Bridge Works, Old Shoreham, Sussex. Dear Ricardo, We enjoyed our visit very much.… | ||
| scan0041 | Letter to Crossley Motors regarding a visit to discuss a side valve exhaust overhead inlet cylinder head. | ||
| View original record | V4706 Exptl. Dept. Hs/Ro.11/KW. 28th June, 1934. Mr. Wishart, Chief Engineer, Messrs. Crossley Motors Ltd., 50, Page Street, Westminster, LONDON, S.W.1. Dear Sir, We understand from Mr. Ricardo that… | ||
| scan0042 | Letter to H.R. Ricardo sending a copy of Janeway's paper for his opinion following a recent visit. | ||
| View original record | V4706 Exptl. Dept. HS/Rm.20/KW. 28th June, 1934. H.R. Ricardo Esq., Messrs. Ricardo & Co., Engineers (1927) Ltd., Bridge Works, Old Shoreham, Sussex. Dear Ricardo, We enjoyed our visit very much. Here… | ||
| scan0043 | Letter from Crossley Motors Ltd acknowledging a previous letter and explaining a delay in response. | ||
| View original record | x4706 CONTRACTORS TO BRITISH & FOREIGN GOVERNMENTS AND COLONIAL DEPARTMENTS. CUSTOMERS' CARS ARE ONLY DRIVEN BY OUR STAFF AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. BY APPOINTMENT TO H.M. THE KING. BY… | ||
| scan0044 | Letter from Crossley Motors arranging a visit to discuss the Ricardo type combustion head. | ||
| View original record | Handwritten: Please return - R Handwritten: x4706 CONTRACTORS TO BRITISH & FOREIGN GOVERNMENTS AND COLONIAL DEPARTMENTS. CUSTOMERS' CARS ARE ONLY DRIVEN BY OUR STAFF AT CUSTOMERS' OWN RISK AND… | ||
| scan0045 | Letter to Crossley Motors Ltd. regarding arrangements for a works visit. | ||
| View original record | 4706 Exptl. Dept. Hs/Rm.6/KW. 4th July, 1934. Messrs. Crossley Motors Ltd., Gorton, Manchester. For attention of Mr. Wishart. Dear Sirs, We thank you for your letter of the 3rd July. So far as we know… | ||
| scan0046 | Dispatch note from Rudge-Whitworth for a 4.99 HP Ulster engine, complete with carburetter and magneto. | ||
| View original record | SUCCESSORS TO Bought of M/8113 Rudge-Whitworth Ltd. RUDGE WORKS CYCLE MANUFACTURERS COVENTRY. Messrs. Rolls-Royce Ltd. Nightingale Rd, Derby. BY APPOINTMENT TO HIS MAJESTY THE KING. TELEPHONE No 4001… | ||
| scan0047 | Technical memorandum discussing performance improvements of a single-cylinder car unit, comparing Kestrel and Bentley components. | ||
| View original record | 4706 To Lr. from Hs/Rm. Hs/Rm.11/KW.4.7.34. CAR SINGLE CYLINDER UNIT. During the discussion on single cylinder units the other day we remarked that we believed there was a latent improvement in M.E.P.… | ||
| scan0048 | Volumetric efficiency, anti-detonating characteristics, and proposed blowing tests on engine models. | ||
| View original record | -2- Hs/Rm.11/KW.4.7.34. In the absence of apparatus for directly measuring volumetric efficiency we believe that a repetition of the blowing test on the metal as opposed to the wooden models,… | ||
| scan0049 | Comparison of Kestrel and Bentley ramp heads, showing performance curves and valve area data. | ||
| View original record | Hs/Rm11/KW.4-7-34 KESTREL AND BENTLEY RAMP HEADS INLET VALVE AREA INLET SQ IN/CU IN EXHAUST VALVE AREA EXHAUST SQ IN/CU IN BENTLEY. STD .039 .033 RAMP. .045 .033 KESTREL STD .036 .025 RAMP. .036 .025… | ||
| scan0050 | Letter from Rudge-Whitworth Limited regarding the dispatch of a 500 c.c. racing engine for experimental purposes. | ||
| View original record | SUCCESSORS TO Rudge-Whitworth Limited. TELEGRAMS, RUDGE, COVENTRY. TELEPHONE 4001. EDWARD DE STEIN, CHAIRMAN. SIR HERBERT E. BLAIN, C.B.E. DEPUTY CHAIRMAN. FRANK G. WOOLARD, MANAGING DIRECTOR.… | ||
| scan0051 | Letter from 'Successors to Rudge Whitworth Ltd.' explaining the difficulty in measuring pipe length for dynamometer testing. | ||
| View original record | Issued Letter to Sheet No. 2. defining the length of pipe is employed because of the difficulty of measuring round the bend, and the shape of pipe as fitted to the machines differs from that which can… | ||
| scan0052 | Letter to Rudge-Whitworth Limited regarding a delay in engine testing due to a lack of a suitable brake. | ||
| View original record | X470 Exptl. Dept. Ha/Rm.16/KW. 5th July, 1934. Messrs. Rudge-Whitworth Limited, COVENTRY. For the attention of MR. Hack. Dear Sirs, Thank you for your letter of the 4th July. The engine has arrived.… | ||
| scan0053 | Follow-up letter to Norton Motors Ltd. regarding a previous unanswered letter. | ||
| View original record | 4706 Exptl. Dept. Hs/Rm.19/KW. 5th July, 1934. Messrs. Norton Motors Ltd., Bracebridge Street, BIRMINGHAM, 6. Dear Sirs, As we have not heard from you with regard to our letter of June 22nd, we are… | ||
| scan0054 | Request to remove the head of a Rudge engine to measure valve sizes for an Air Ministry inspection. | ||
| View original record | To RHC. 74706 Hs/Smth.5/KW.6.7.34. YY Rudge Engine. Will you please remove the head of this engine and measure the valve sizes. We are particularly anxious to have the engine in the shop on Monday,… | ||
| scan0055 | Letter from Crossley Motors Ltd. confirming a meeting with Mr. W.A. Robotham. | ||
| View original record | CONTRACTORS TO BRITISH & FOREIGN GOVERNMENTS AND COLONIAL DEPARTMENTS. x4706 BY APPOINTMENT TO H.M. THE KING. BY APPOINTMENT TO H.R.H. THE PRINCE OF WALES. CUSTOMERS' CARS ARE ONLY DRIVEN BY OUR STAFF… | ||
| scan0056 | Letter to H.R. Ricardo discussing cylinder head designs from Crossley's, their similarity to Ricardo's own, and planned single-cylinder tests. | ||
| View original record | X4706 Exptl. Dept. Hs/Rn.12/KW. 11th July, 1934. H.R. Ricardo, Esq., Messrs. Ricardo & Co., Engineers (1927) Ltd., Bridge Works, Old Shoreham, Sussex. Dear Ricardo, Thank you very much for returning… | ||
| scan0057 | Requesting an official report on single cylinder development. | ||
| View original record | X4706 To Hs. from E. E.3/HP.13.7.34. c. L.R. re Single Cylinder Development. We should very much like to have a report on the single cylinder development. We realise that there are a lot of results… | ||
| scan0058 | Letter from Harry Ricardo discussing a 'High Power Head' patent from a competitor named Whatmough and Ricardo's own successful patent action. | ||
| View original record | x4706 DLR. Please note & Return DIRECTORS: H.R. RICARDO, F.R.S. THE VISCOUNT COMBERMERE. SIR A.H. MCMAHON, G.C.M.G., G.C.V.O. H.A. HETHERINGTON. P.C. KIDNER. RICARDO & CO., ENGINEERS, (1927) LIMITED.… | ||
| scan0059 | Report comparing a 'Ramp' type cylinder head with a standard Bentley head on a single-cylinder test unit. | ||
| View original record | X4706 To Sg. c. to Wor. c. to Rg. c. to E. c. to By. c. to Lr. He/GRP.15/KM.26.7.34. Single Cylinder Bentley Unit. Period covered by this report: 20th March to 21st July, 1934. This engine has… | ||
| scan0060 | Comparison of 'Ramp' and standard cylinder heads, detailing constructional differences and detonation test setup. | ||
| View original record | -2- (3) The plug position is unalterable for use in multi-cylinder unit. (4) Tests are shortly to be carried out with a smaller inlet valve, which will increase the turbulence at this point and… | ||
| scan0061 | Performance comparison between the 'Ramp' cylinder head and the standard head, focusing on detonation and power output. | ||
| View original record | -3- Generally speaking, the Ramp head is considerably worse than the std. for freedom from detonation: at 1600 r.p.m. the audible range of detonation of the former is 113 feet, while the latter is 60… | ||
| scan0062 | Analysis of engine performance based on modifications to choke size, valve lift, timing, and exhaust valve size. | ||
| View original record | -4- It will be noticed that the peak speeds of the B.M.E.P. curves have altered roughly in proportion to the inlet valve areas of the two heads. On Sheet 6 will be found a general comparison of the… | ||
| scan0063 | Engine test results, including power loss, supercharged tests, and various mechanical failures. | ||
| View original record | -5- A further reduction of 13° in exh. lift duration, resulted in a power loss: this curve had to be terminated at 3750 r.p.m. owing to failure of the tappet, thus preventing further investigation.… | ||
| scan0064 | Engine valve mechanism issues, proposed solutions, and future work on cylinder head design and performance testing. | ||
| View original record | -6- Hs/CHP.15/KM.26.7.34. Valve Timing Phase adjustment mechanism. After running 36 hrs. 25 mins. this mechanism (exhaust valve) had become very noisy owing to an excessive amount of backlash having… | ||
| scan0065 | Graph comparing the performance of Ramp and Standard cylinder heads in Bentley single-cylinder tests. | ||
| View original record | V1706 SHEET 1. BENTLEY SINGLE CYLINDER TESTS. COMPARISON OF PERFORMANCE OF RAMP & STANDARD CYLINDER HEADS AT THE SAME DEGREE OF DETONATION & COMPRESSION RATIO. NATURALLY ASPIRATED COMPRESSION RATIO =… | ||
| scan0066 | Graph showing detonation tests with a Ramp Cylinder Head, plotting BMEP and ignition advance against RPM. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS. SHEET 2 2021 A DETONATION TESTS WITH RAMP CYLINDER HEAD. NATURALLY ASPIRATED COMPRESSION RATIO = 6.4 FUEL = Nᵒ1 SHELL SILENCED EXHAUST TO DETECT DETONATION VALVE TIMING… | ||
| scan0067 | Detonation tests on a Bentley single cylinder engine with a standard cylinder head. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS. SHEET 3. V1708 DETONATION TESTS WITH STANDARD CYLINDER HEAD. NATURALLY ASPIRATED COMPRESSION RATIO - 6.4. FUEL - N°1 SHELL SILENCED EXHAUST TO DETECT DETONATION. VALVE… | ||
| scan0068 | Graph comparing the power performance of Ramp and Standard cylinder heads on a Bentley single-cylinder test engine using normal fuel. | ||
| View original record | SHEET 4 V1709. BENTLEY SINGLE CYLINDER TESTS POWER COMPARISON OF RAMP & STANDARD CYL. HEADS (NORMAL FUEL) NATURALLY ASPIRATED OPEN EXHAUST FUEL - N°1 SHELL COMPRESSION RATIO: RAMP: 6.59; STD: 6.40.… | ||
| scan0069 | Power comparison chart for Ramp and Standard cylinder heads from Bentley single-cylinder tests, using anti-detonating fuel. | ||
| View original record | SHEET 5 V1710 BENTLEY SINGLE CYLINDER TESTS. POWER COMPARISON OF RAMP & STANDARD CYL. HEADS (ANTI-DETONATING FUEL). NATURALLY ASPIRATED OPEN EXHAUST FUEL = DTD 224 COMPRESSION RATIO: RAMP = 6.59, STD.… | ||
| scan0070 | Graph comparing the indicated power and consumption of Ramp and Standard cylinder heads for Bentley single cylinder tests. | ||
| View original record | SHEET 6 1121A BENTLEY SINGLE CYLINDER TESTS INDICATED POWER & CONSUMPTION COMPARISON OF RAMP & STD. CYLINDER HEADS. NATURALLY ASPIRATED OPEN EXHAUST FUEL - DTD 224 COMPRESSION RATIO: RAMP = 6.59; STD… | ||
| scan0071 | Graph comparing the effect of choke size variation on BMEP for a Ramp Head versus a Standard Head in Bentley single cylinder tests. | ||
| View original record | SHEET 7 BENTLEY SINGLE CYLINDER TESTS. EFFECT OF VARIATION IN CHOKE SIZE ON BMEP NATURALLY ASPIRATED OPEN EXHAUST FUEL - N° 1 SHELL COMPRESSION RATIO: RAMP. 6·59; STD. 6·40 VALVE TIMING (.020… | ||
| scan0072 | Graph comparing performance with different exhaust valve sizes and timings on a Bentley single cylinder head. | ||
| View original record | V1713 Sheet 8 BENTLEY SINGLE CYLINDER TESTS COMPARISON OF EXHAUST VALVE SIZE (RAMP CYLINDER HEAD) NATURALLY ASPIRATED OPEN EXHAUST FUEL - DTD224 NORMAL INLET VALVE (1.500 DIA) COMPRESSION RATIO -… | ||
| scan0073 | Graph showing supercharged power curves from Bentley single cylinder engine tests with a ramp head. | ||
| View original record | SHEET 9 V1714 BENTLEY SINGLE CYLINDER TESTS SUPERCHARGED POWER CURVES (RAMP HEAD) COMPRESSION RATIO = 6.40 OPEN EXHAUST FUEL - DTD 224 VALVE TIMING (.020 CLEARANCE): I.O. 4°E; I.C. 51°L; E.O. 51°E;… | ||
| scan0074 | Correction notice for a report on the Single Cylinder Bentley Unit, instructing the recipient to substitute incorrect curves. | ||
| View original record | To Sg. X4706 Hs/CHP.1/KW. 2. 8. 34. Single Cylinder Bentley Unit. ============================= With reference to our report on this subject, reference Hs/CHP.15/KW. 26. 7. 34, we regret to say that… | ||
| scan0075 | Urgent requirements and status for a single-cylinder Bentley engine project. | ||
| View original record | To. Hs/Rm. x4706 3-8-34 re. Single Cylinder Bentley. Modified Tappets & Rockers (LE C 4048). This scheme is urgently required for tests on power + air consumption on the Ramp head, with large exhaust… | ||
| scan0076 | Comparing the No.2 Ramp Cylinder Head with a Standard Bentley head. | ||
| View original record | X45T3 6 EXPERIMENTAL DEPARTMENT REPORT. REFERENCE :- Hs/Wd./CHP.1/GB.1.11.34. Subject of Report:- Comparison of No.2 Ramp Cylinder Head with Standard Bentley. General Conclusions :- No.2 Ramp Head is… | ||
| scan0077 | Single cylinder Bentley unit, comparing the performance and detonation characteristics of a revised 'Ramp' cylinder head against the standard version. | ||
| View original record | SINGLE CYLINDER BENTLEY UNIT. Period covered by this report - 22nd July to 11th Oct.1934. This engine has completed a further 62 hours, 30 mins. running time since the last report was issued. The work… | ||
| scan0078 | Detailed report comparing the performance of standard and No. 2 Ramp Bentley cylinder heads. | ||
| View original record | (2) DETAILED REPORT. VOLUMETRIC EFFICIENCY. Air consumption figures have been recorded for the standard Bentley Cylinder Head and No.1 Ramp (LeC.3739). These were obtained by means of measuring the… | ||
| scan0079 | Comparison of No. 2 Ramp and Standard cylinder heads, focusing on constructional details and detonation performance. | ||
| View original record | (3) COMPARISON OF NO. 2 RAMP AND STANDARD HEADS (Contd). Constructional Details. No. 2. Ramp. Standard. Area past inlet valve (normal) .... 1.677 sq. ins. 1.450 sq. ins. " " " " (large) ..... 1.920… | ||
| scan0080 | Comparison of engine performance using different spark plug positions, cylinder heads (No.2 Ramp vs standard Bentley), and exhaust timing durations. | ||
| View original record | (4) when a small improvement is obtained. When two plugs in the side positions are used a very big improvement is gained. When one of the two plugs is fitted in the normal position, however, very… | ||
| scan0081 | Effects of dual ignition, larger inlet valves, and indicated power on engine performance. | ||
| View original record | (5). DUAL IGNITION. It will be seen from Sheet 5 that a very slight improvement is obtained by the use of two plugs. The curves also show the minimum ignition advance necessary for maximum power in… | ||
| scan0082 | Report page detailing various valve timing comparisons in a table and discussing resulting mechanical troubles, specifically valve bounce. | ||
| View original record | (6) VALVE TIMING. In order to make comparison easy, the various valve timings to which reference is made in this report are tabulated below:- I.O. I.C. E.O. E.C. Overlap 1. Standard Bentley… | ||
| scan0083 | Leaking exhaust valves in a standard Bentley head and future work on ramp and modified Bentley heads. | ||
| View original record | (7) LEAKING EXHAUST VALVE (Standard Bentley Head). We have experienced three more instances of a leaking exhaust valve on the standard head, apparently due to hammering of the seat. This trouble… | ||
| scan0084 | Graph showing the results of air consumption and volumetric efficiency tests on a Bentley single-cylinder engine. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS SHEET 1 AIR CONSUMPTION & VOLUMETRIC EFFICIENCY. NATURALLY ASPIRATED ZENITH TRIPLE DIFFUSER CARBURETTOR (32 7/16 CHOKE) NORMAL VALVE TIMING (I.O. 4°E; I.C. 51°L; E.O.… | ||
| scan0085 | Graph plotting Horse Power and Mean Effective Pressure against RPM for a single-cylinder Bentley engine test. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS SHEET 2 POWER REQUIRED TO ROTATE ENGINE JACKET WATER MAINTAINED AT 85°C THROUGHOUT TEST. ENGINE UNAVOIDABLY ROTATED IN REVERSE DIRECTION. NO CARBURETTOR NOR EXHAUST PIPES… | ||
| scan0086 | Graph plotting Brake Horse Power and B.M.E.P. against R.P.M. to show the effect of variation in exhaust duration on a Bentley single cylinder engine. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS SHEET 3. EFFECT OF VARIATION IN EXHAUST DURATION Nº 2 RAMP HEAD (LEC 3871) INLET VALVE - 1.500 DIA NATURALLY ASPIRATED ZENITH TRIPLE DIFFUSER CARBURETTOR (32% CHOKE) OPEN… | ||
| scan0087 | Graph showing power and consumption curves from Bentley single cylinder tests for the Nº2 Ramp Head. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS SHEET 4 POWER & CONSUMPTION CURVES, (Nº2 RAMP HEAD) Nº2 RAMP HEAD (L.C. 3871) COMPRESSION RATIO = 6.5 INLET VALVE = 1.500" DIA. EXHAUST VALVE = 1.400 DIA. NATURALLY… | ||
| scan0088 | Graph from the Bentley single cylinder tests showing the effect of dual ignition on power output, BMEP, and ignition advance against RPM. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS. SHEET 5 EFFECT OF DUAL IGNITION ON POWER OUTPUT N° 2 RAMP HEAD (I.E.C. 3871) COMPRESSION RATIO - 6.5 INLET VALVE - 1.500" DIA EXHAUST VALVE - 1.400 DIA NATURALLY… | ||
| scan0089 | Performance graph from a Bentley single-cylinder engine test showing power output with a large inlet valve (Nº 2 Ramp Head). | ||
| View original record | Nº BENTLEY SINGLE CYLINDER TESTS. SHEET 6 POWER OUTPUT WITH LARGE INLET VALVE, (Nº 2 RAMP HEAD) Nº 2 RAMP HEAD (LEC 3871) INLET VALVE = 1.600 DIA. NATURALLY ASPIRATED ZENITH TRIPLE DIFFUSER… | ||
| scan0090 | Graph plotting the effect of inlet valve orifice coefficient improvements on engine performance. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS SHEET 7 EFFECT OF IMPROVEMENT OF INLET VALVE ORIFICE COEFFICIENT (SEE ALSO SHEET 8) TEST PARAMETERS: No 2 RAMP HEAD (L.C.3871) NATURALLY ASPIRATED ZENITH TRIPLE DIFFUSER… | ||
| scan0091 | Graph plotting the effect of inlet valve orifice coefficient improvements on engine performance during Bentley single-cylinder tests. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS SHEET 8 EFFECT OF IMPROVEMENT OF INLET VALVE ORIFICE COEFFICIENT (SEE ALSO SHEET 7) Nº2 RAMP HEAD (L.C. 3871) NATURALLY ASPIRATED ZENITH TRIPLE DIFFUSER CARBURETTOR (32%… | ||
| scan0092 | Indicated power and consumption curves from Bentley single cylinder tests. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS SHEET 9 INDICATED POWER & CONSUMPTION CURVES. COMPILED FROM CURVES ON SHEETS 2 & 4. No2 RAMP HEAD (L.C.3871) INLET VALVE = 1.500" DIA NATURALLY ASPIRATED ZENITH TRIPLE… | ||
| scan0093 | Graph comparing engine detonation performance between a No. 2 Ramp head and a standard Bentley head during single cylinder tests. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS SHEET 10 DETONATION COMPARISON - N°2 RAMP & STD. BENTLEY HEADS EXHAUST SILENCED TO DETECT DETONATION NATURALLY ASPIRATED AEROLITE PISTON ZENITH TRIPLE DIFFUSER… | ||
| scan0094 | Graph showing the effect of spark plug position on detonation for a No.2 Ramp Head in a Bentley single-cylinder test engine. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS. SHEET 11 EFFECT OF PLUG POSITION ON DETONATION -- N°2 RAMP HEAD (SEE ALSO SHEET 12) EXHAUST SILENCED TO DETECT DETONATION N°2 RAMP HEAD (LEC 3871) INLET VALVE = 1.500"… | ||
| scan0095 | Graph showing the effect of dual ignition on detonation for a Bentley single cylinder engine with a No. 2 Ramp Head. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS SHEET 12 EFFECT OF DUAL IGNITION ON DETONATION, - N°2 RAMP HEAD. (SEE ALSO SHEET 11) EXHAUST SILENCED TO DETECT DETONATION N°2 RAMP HEAD (T.C. 3871) COMPRESSION RATIO =… | ||
| scan0096 | Report on 'Ramp Head No.2', its promising performance, and suggestions for further modifications and testing. | ||
| View original record | To HS/Wd, from HS/Smth. c. to WOP. c. to E. c. to MS. C. to Hy. Re HS/Wd/CHP.1/GB.1.11.34. We have read this report with great interest and note that the Ramp Head No.2 appears to be promising. It… | ||
| scan0097 | Comparison of three valve head designs and a discussion on valve timing for competition cars. | ||
| View original record | -2- Fig. 1. Fig. 2. Fig. 3. Each of these forms gives the same clearance between the wall and the valve head at maximum lift, but whereas Fig. 1 allows more anular space around the valve at small… | ||
| scan0098 | Engine head design, focusing on turbulence, detonation, volumetric efficiency, and comparing single vs multi-cylinder performance. | ||
| View original record | -3- HS/Smth.14/KW.13.11.34. By increasing the forced turbulence on the ramp head we have effected a considerable improvement in detonation. Would it be possible, or worth while, to try the effect of… | ||
| scan0099 | Graph showing the volumetric efficiency and BMEP of Bentley Unit B.3 against engine RPM. | ||
| View original record | BENTLEY UNIT B.3 VOLUMETRIC EFFICIENCY STANDARD TIMING OPEN EXHAUST CAMSHAFT EB 1085 STD HEAD 6.5/1 CR 1.400 DIA. I/L VALVE BMEP lbs/sq in Vol η % R.P.M 4. B.R. S/34 12. XII. 34 | ||
| scan0100 | Power curve tests for a Standard Bentley Head with modified valve timing and no overlap. | ||
| View original record | To - Hs/Rm. from Hs/Wd. [strikethrough]c. to Wer.[/strikethrough] [strikethrough]c. to E.[/strikethrough] Hs/Wd.1/GB.17.11.34. [Handwritten Signature] Rm STANDARD BENTLEY HEAD POWER WITH NO OVERLAP.… | ||
| scan0101 | Graph plotting Brake Horse Power against RPM to show the effect of valve timing overlap on a standard Bentley cylinder head. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS. SHEET 1 EFFECT ON POWER OF VALVE TIMING OVERLAP (STD. BENTLEY HEAD) STANDARD BENTLEY CYLINDER HEAD (EB 1517) COMPRESSION RATIO = 6.4 INLET VALVE = 1.400 DIA., EXHAUST… | ||
| scan0102 | Performance improvements and testing plans for a new Ramp No. 2 cylinder head design. | ||
| View original record | To - Hs/Rm. from Hs/Wd. c. to Wor. c. to E, c. to Rg. c. to By. [Signature] C.L.S. re Hs/Smth.14/KW.13.11.34. With reference to the comments in the above memo on the report of Ramp No.2 Head… | ||
| scan0103 | Report page discussing engine performance comparisons of the Ramp head, focusing on compression ratios and volumetric efficiency. | ||
| View original record | (2) able to compare performance and detonation of the Ramp head at turbulence ratios of 1.56, 1.79 and 1.97. The effect of increasing compression ratio of the Ramp No.2 is in hand. The flange has been… | ||
| scan0104 | Car single cylinder development work, including cylinder heads, sleeve valves, and overhead camshafts. | ||
| View original record | NOT SENT OUT (To E. from Hs/Rm. (To Hs/Wd. c. to Sg. c. to Wor. c. to By. c. to Bn. X1003 Hs/Rm.12/KW.19.11.34. Car Single Cylinder Development Work. We have now three types of cylinder head available… | ||
| scan0105 | Analysis of engine cylinder head designs, including overhead camshafts, four valves per cylinder, and hydraulic tappets. | ||
| View original record | -2- Hs/Rm.12/KW.19.11.34. An analysis of the best we can do with the present standard head, the high power head and the Rudge head will indicate what we may expect in the way of improved efficiency.… | ||
| scan0106 | Engine design considerations including supercharging, cylinder heads, and valve configurations. | ||
| View original record | -3- We have a certain apprehension about the exhaust valve in the high power head, more particularly if we should supercharge it. The question of whether a detachable head should be used with an… | ||
| scan0107 | Effect of stroke bore ratio on efficiency and challenges related to supercharging. | ||
| View original record | -4- We are of course interested in the effect of stroke bore ratio on efficiency, but as at present the method of Taxation largely dictates this feature, for the moment we consider that it is of… | ||
| scan0108 | Chevrolet cylinder head improvement with staggered valves and suggesting further investigation. | ||
| View original record | X1003 To E. & Hs/Wd. from Hs/Rm: Hs/Rm.5/KW.22.11.34. When I was in America, Janeways seemed rather pleased with the improvement they had made to the Chevrolet head by putting the valves at different… | ||
| scan0109 | Particulars and disadvantages of a Chevrolet cylinder head valve arrangement. | ||
| View original record | X1003 To Hs/Rm. Copy to Hs/Wd. EFSN.1/MN.27/11/34. Further to your memo, Hs/Rm.5/KW.22/11/34, we examined the particulars of the Chevrolet cylinder head at the time of their publication in "Automotive… | ||
| scan0110 | Improvements to cylinder head design, specifically regarding flame travel and breathing capacity. | ||
| View original record | 2. 3. Longer flame travel, although this is mitigated to some extent by firing the hot gas under the exhaust valve first as in our ramp head. However, we are again reviewing the cylinder head problem… | ||
| scan0111 | No.2 Ramp Head Report and the effects of engine modifications on gas flow. | ||
| View original record | x1093 TO Hs/SD. Copy to Mr. Hs/Rm. E/PSN.2/MN.8.12.34. Rm Re No.2 Ramp Head Report. Hs/Wd/CHP.1/GB.1/11/34. With reference to the curves shown on sheets 7 and 8 of the above report dealing with the… | ||
| scan0112 | Comparing a Bentley 'Close-Centres' Head with a Standard Head. | ||
| View original record | EXPERIMENTAL DEPARTMENT REPORT. L.L. Smith REFERENCE :- Hs/Wd./CHP.1/GB.11.12.34. Subject of Report:- Comparison of Bentley "Close-Centres" Head with Standard Head. General Conclusions: The… | ||
| scan0113 | Development work comparing a 'close-centres' cylinder head with a standard one on a single cylinder Bentley unit. | ||
| View original record | Hs/Wd./CHP.1/GB.11.12.34. SINGLE CYLINDER BENTLEY UNIT. Period covered by this report : - 12th October to 30th November 1934. This engine has completed a further 42 hours, 35 minutes running time… | ||
| scan0114 | Detailed report and comparison of 'close-centres' and standard cylinder heads, discussing valve timing and constructional details. | ||
| View original record | - 2 - the standard Bentley timing: at 1000 R.P.M. the detonation is 33% less than standard and it disappears at 1750 R.P.M. Detonation figures for the "close-centres" head when running with the best… | ||
| scan0115 | Power output improvements from modifying engine valve and port sizes. | ||
| View original record | - 3 - 1.25" diameter exhaust valve, also with 1.35" diameter inlet port. The valves were then progressively increased in size until the inlet was 1.5" diameter and the exhaust 1.4". The final… | ||
| scan0116 | Analysis of the effect of reducing valve timing overlap on power for standard and 'close-centres' cylinder heads. | ||
| View original record | - 4 - VALVE TIMING OVERLAP. The effect of reducing the valve timing overlap is shown on sheets 4 and 5 for standard and "close-centres" heads respectively. From sheet 4 it will be seen that the… | ||
| scan0117 | Analysis of engine power output, detonation, and valve timings at various RPM settings. | ||
| View original record | - 5 - POWER OUTPUT WITH HIGH SPEED TIMING. The power curves given on sheet 6 show the effect of timing the valves to give maximum power at 4000 RPM. It will be seen that this timing gives a slight… | ||
| scan0118 | Tests and mechanical troubles with 'close-centres' heads, valve lift, and tappets. | ||
| View original record | (6) The "close-centres" head gives the best all round M.E.P. curve with No.4 timing, the overlap of which is almost identical with the normal Bentley timing (No.1). VALVE LIFT. Tests have been carried… | ||
| scan0119 | Future work and recommendations for engine development, focusing on cylinder heads, carburettors, valves, and camshafts. | ||
| View original record | (7) FUTURE WORK AND RECOMMENDATIONS. As opportunity arises the "close-centres" head will be returned to the bed to investigate the effect of increasing the carburetter choke size in proportion to the… | ||
| scan0120 | Graph comparing the performance of close-centres and standard cylinder heads on a single-cylinder test engine. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS. SHEET 1 POWER COMPARISON: CLOSE-CENTRES & STD HEADS. "CLOSE-CENTRES" HEAD (L.C.4100), C.R. = 6.35. STANDARD BENTLEY HEAD (F.B.1517), C.R. = 6.4. AEROLITE PISTON. ZENITH… | ||
| scan0121 | Graph charting the results of Bentley single-cylinder engine tests on the effect of improving the valve orifice coefficient. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS. SHEET 2 EFFECT OF IMPROVEMENT OF VALVE ORIFICE COEFFICIENT. (SEE ALSO SHEET 3) "CLOSE-CENTRES" HEAD (L.C. 4100) AEROLITE PISTON ZENITH TRIPLE DIFFUSER CARBURETTOR (32%… | ||
| scan0122 | Graph showing the effect of valve orifice coefficient improvements from Bentley single cylinder tests. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS SHEET 3 EFFECT OF IMPROVEMENT OF VALVE ORIFICE COEFFICIENT (SEE ALSO SHEET 2) 'CLOSE-CENTRES' HEAD (L.C.4100) AEROLITE PISTON ZENITH TRIPLE DIFFUSER CARBURETTOR (32 m/m… | ||
| scan0123 | Graph showing the effect of valve timing overlap on the power of a standard Bentley single-cylinder head. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS. EFFECT ON POWER OF VALVE TIMING OVERLAP (STD. BENTLEY HEAD). SHEET 4 STANDARD BENTLEY CYLINDER HEAD (EB1517). COMPRESSION RATIO = 6:4 INLET VALVE = 1.400 DIA, EXHAUST… | ||
| scan0124 | Graph showing the effect of valve timing overlap on power for a single cylinder engine test. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS SHEET 5 EFFECT ON POWER OF VALVE TIMING OVERLAP (CLOSE-CENTRES HEAD) "CLOSE-CENTRES" CYLINDER HEAD (L.E.C4100) COMPRESSION RATIO - 6.35 INLET VALVE = 1.500 DIA., EXHAUST… | ||
| scan0125 | Blueprint graph showing power curves from a Bentley single-cylinder engine test with valves timed for 4000 RPM. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS SHEET 6 POWER CURVES WITH VALVES TIMED FOR 4000 RPM "CLOSE-CENTRES" HEAD (L.C. 4100) COMPRESSION RATIO : 6.35 INLET VALVE : 1.500 DIA., EXHAUST VALVE : 1.400 DIA. INLET… | ||
| scan0126 | Graph comparing detonation, B.M.E.P., and ignition advance in Close-Centres vs. Standard Heads for Bentley Single Cylinder Tests. | ||
| View original record | BENTLEY SINGLE CYLINDER TESTS SHEET 7 DETONATION COMPARISON: CLOSE-CENTRES & STD. HEADS. EXHAUST SILENCED TO DETECT DETONATION. NATURALLY ASPIRATED ZENITH TRIPLE DIFFUSER CARBURETTOR (32% CHOKE)… | ||
| scan0127 | Modifications for a small universal single cylinder unit, specifically a 9:1 compression ratio Bentley cylinder head. | ||
| View original record | To BY. x1003 E/PSN.3/MN.12/12/34. H. Smith Copy to HHG. Hs/Hm. Hs/Hm. SMALL UNIVERSAL SINGLE CYLINDER UNIT. We send you herewith LeC 4249 showing a 9 : 1 compression ratio Bentley close centres… | ||
| scan0128 | Request for performance curves showing power variation with valve lift on a Small Universal Single Cylinder Unit, for development on the Wraith and Spectre models. | ||
| View original record | Le Smith x100 3 To. Hs/Wo. Copy to B. Hs/Rm. E/PSN.4/MN.12/12/34. Small Universal Single Cylinder Unit. We should be pleased if you could provide us with some curves showing the variation of power… | ||
| scan0129 | New design for a Bentley single cylinder head and ordering spare castings of the existing pattern. | ||
| View original record | To RHC. c. to Hs/Rm. X1003 Hs/Wd.2/GB.13.12.34. STANDARD BENTLEY SINGLE CYLINDER HEAD. A design has been prepared for a Bentley single cylinder head to give a compression ratio of 9/1. This involves… | ||
| scan0130 | Modifications to engine heads based on single-cylinder test results for competition work. | ||
| View original record | X1003 To By. from Hs/Rm. c. to E. c. to Hs/Wd. Hs/Rm.11/KW.13.12.34. Referring to Hs/Wd.1/GB.12.12.34, we think that the single cylinder work which has been done on this head has given excellent… | ||
| scan0131 | Proposing the creation of a second Bentley Universal Unit to prevent future design delays. | ||
| View original record | X1003 To: E.H. c. to Hs/Rm. Hs/Wd.4/GB.1.1.35. BENTLEY UNIVERSAL UNIT. In going over the list of projected cylinder heads for the cars it is clear that unless we have another Universal Unit the delay… | ||
| scan0132 | Outlining the priority of various engine research and modification jobs. | ||
| View original record | To - E. c. to Wor. c. to Hs. With reference to our discussion on the 16th instant, with regard to priority of the various research jobs, you were going to let me have a report on the Air Ministry's… | ||
| scan0133 | List of discussion topics regarding an exhaust-driven turbine, Kestrel and Exe engines, and alternative Car Heads. | ||
| View original record | (2) Hs/Wd.3/GB.19.1.35. The Exhaust Driven Turbine for the six cylinder arrangement. The modifications to the six cylinder Kestrel necessary to remove the present period. The Exe six cylinder unit.… | ||
| scan0134 | Expressing concern about the de-prioritization and lack of progress on car single-cylinder unit work. | ||
| View original record | +1003 To Hs/Wd. c. to Wor. c. to E. Hs/Rm.4/KW.21.1.35. With reference to Hs/Wd.3/GB.19.1.35. We are concerned to see that the car single cylinder work is relegated to such a position that apparently… | ||
| scan0135 | Viability of sleeve valve engines for use in motor cars, based on a conversation with Mr. Fedden. | ||
| View original record | X1003 To E. From Hs/Rm. c.c. to WoR. c.c. to By. c.c. to Rg. c.c. to Wd. Hs/Rm. S/KW.1.2.35. Sleeve Valve Engines for Car Work. Whilst we were at Bristol we had an opportunity of discussing sleeve… | ||
| scan0136 | Report comparing sleeve valve and poppet valve engine performance characteristics. | ||
| View original record | -2- (3) Volumetric Efficiency. We said that from our superficial investigations we had come to the conclusion that it would be difficult to get the same volumetric efficiency from an in-line engine… | ||
| scan0137 | Comparative table of various engine specifications and performance data. | ||
| View original record | ENGINE DATA HEADERS: ENGINE | BORE | STROKE | STROKE/BORE RATIO | TOTAL CAPACITY (CU.INS, CC) | VALVE AREA INLET | VALVE AREA EXHAUST | VALVE LIFT | VALVE AREA PER LITRE AT 6.5/1 C.R & 15" DEPN INLET… | ||
| scan0138 | Comparison of power and detonation for high power heads using single and twin inlet valves. | ||
| View original record | A-103 Power & Detonation Comparison — High Power Heads (Single & Twin Inlet Valves) Area Past Single Inlet Valve = 2.29 sq in " " Twin Inlet Valves = 2.22 sq in " " Exhaust Valve = 1.66 sq in… | ||
| scan0139 | Function and practicality of suction operated ignition control. | ||
| View original record | To E. Suction Operated Ignition Control. The function of controls of this type is to advance the ignition when the car is running under partially closed throttle conditions. Theoretically, suction and… | ||
| scan0140 | Graph showing the characteristics of the suction and speed-operated ignition control for a Graham-Paige car. | ||
| View original record | GRAHAM - PAIGE CHARACTERISTICS OF SUCTION & SPEED OPERATED IGNITION CONTROL CAR RUNNING LIGHT AT VARIOUS SPEEDS. DEPRESSION ON SUCTION CONTROL - INS HG IGNITION ADVANCE - DEGREES 20 15 10 5 0… | ||
| scan0141 | Graph of Bentley ignition advance curves at 2000 RPM, plotting brake lift against ignition advance for various loads. | ||
| View original record | BENTLEY IGNITION ADVANCE CURVES, 2000 R.P.M., BRAKE LIFT - LBS., IGNITION ADVANCE - DEGREES, FULL LOAD, MAX. POWER, HALF LOAD, 2% POWER DROP, QUARTER LOAD, 3% POWER DROP, F. L. S., 7. 1. 35 | ||
| scan0142 | Graph showing the volume distribution against flame travel for Bentley Standard and Ramp cylinder heads. | ||
| View original record | VOLUME DISTRIBUTION IN BENTLEY STANDARD & RAMP HEADS. FRACTIONAL VOLUME BURNT 1000 900 800 700 600 500 400 300 200 100 0 STANDARD HEAD RAMP HEAD FLAME TRAVEL IN INCHES .5 1 1.5 2 2.5 3 | ||
| scan0143 | Requesting indicator cards for the Spectre engine to study combustion chamber characteristics. | ||
| View original record | To Hs. from E. SECRET. c. Sg. Wor. Hs/Wd. E/JNR. E/PSN. re Combustion Chamber Characteristics. We should be glad if you could obtain some indicator cards for the Spectre engine, more particularly that… | ||
| scan0144 | Requesting indicator cards to be taken from a single cylinder unit. | ||
| View original record | To E. c. to Hs/Wd. X100 3 Hs/Rm.7/KW.15.4.35. Replying to E.6/HP.8.4.35. Since the indicator is fitted up on the single cylinder unit, we are asking Hs/Wd. to take the indicator cards. Hs/Rm. | ||
| scan0145 | Requesting the casting and modification of a high power cylinder head for a six-cylinder engine. | ||
| View original record | X1003 To. RHG. c. to Hs/Rm. Hs/Wd.2/GB.24.4.35. HIGH POWER HEAD. Will you please arrange to get at least four sound castings in aluminium of the High Power head, as recently modified. We are looking… | ||
| scan0146 | Instruction to manufacture a modified Bentley Universal Unit with a crankshaft extension for test bed mounting. | ||
| View original record | To - E. c. to Hs. c. to EJJ. X1003 Hs/Wd.2/GB.28.5.35. BENTLEY UNIVERSAL UNIT. In accordance with the decision given at the Aero Conference on the 22nd instant, and with the instructions to EJJ. in… | ||
| scan0147 | Experimental department report on a 500 c.c. Rudge Air/Cooled Engine. | ||
| View original record | EXPERIMENTAL DEPARTMENT REPORT. X1129 REFERENCE :- Hs/Wd.1/GB.14.6.35. Subject of Report:- 500 c.c. Rudge Air/Cooled Engine. General Conclusions :- This Cylinder gives a high performance free of… | ||
| scan0148 | Test report on a 500 c.c. Rudge engine covering performance, mechanical issues, and running time. | ||
| View original record | Hs/Wd.1/GB.14.6.35. 500 c.c. RUDGE ENGINE. PERIOD COVERED BY THIS REPORT - 28th July 1934 to 1st April 1935. The total running time of this unit (included in the above period) is 16 hours 40 minutes.… | ||
| scan0149 | Detailed report on engine constructional details and specifications. | ||
| View original record | - 2 - DETAILED REPORT. CONSTRUCTIONAL DETAILS. Bore x Stroke = 85 m/m x 88 m/m. 3.346" x 3.464" Swept Volume = 500 c.c. (30.5 cu.ins.) Compression Ratio = 7.3 Inlet Valve diameter = 1.200" Exhaust… | ||
| scan0150 | Engine performance tests, focusing on power output and cooling. | ||
| View original record | - 3 - Hs/Wd.1/GB.14.6.35. POWER OUTPUT. It will be seen from the curves on sheet 2 (appended) that a maximum B.M.E.P. of 161.0 lbs/sq.in. is developed at 4500 R.P.M. under normal conditions. This is… | ||
| scan0151 | Engine tests covering detonation, valve timing, and piston seizures. | ||
| View original record | - 4 - DETONATION. When using No.1 Shell fuel, no audible detonation is present throughout the speed range tested, i.e. 3500 to 6000 R.P.M. The exhaust was, of course, silenced during these tests. The… | ||
| scan0152 | Engine testing issues including excessive vibration, starting difficulties, and a fractured crankshaft. | ||
| View original record | - 5 - Hs/Wd.1/GB.14.6.35. EXCESSIVE VIBRATION. During the earlier tests it was found that the unit vibrated excessively at the higher engine speeds, due to the slight flexibility of the test bed. This… | ||
| scan0153 | Blueprint graph showing valve lift diagrams for both inlet and exhaust from 500cc Rudge tests. | ||
| View original record | 500cc RUDGE TESTS SHEET 1 VALVE LIFT DIAGRAM (INLET) POSITION OF CRANKSHAFT (DEGREES FROM T.D.C.) VALVE LIFT (INCHES) 300 200 100 0 320° T.D.C. 40° 80° 120° 160° B.D.C. 200° 240° VALVE LIFT DIAGRAM… | ||
| scan0154 | Power and consumption curves from a 500cc Rudge engine test. | ||
| View original record | 500cc RUDGE TESTS. SHEET 2 POWER & CONSUMPTION CURVES COMPRESSION RATIO = 7.3 FUEL = 50/50 (BENZOL/DTD 224) VALVE TIMING (.020" CLEARANCE): I.O. 28°E., I.C. 48°L. E.O. 50°E., E.C. 25°L. NORMAL EXHAUST… | ||
| scan0155 | Design, valving, and port arrangement of sleeve valve car engines. | ||
| View original record | To Hs/Rm. X1929 Hs/Smth.6/KW.20.6.35. Sleeve Valves for Car Engines. We have looked into certain matters connected with the design of an 8-cylinder 3 1/2" bore and a 6-cylinder 3 1/2" bore sleeve… | ||
| scan0156 | Comparison of valve and port area specifications for various engines, with a subsequent analysis on inlet valving. | ||
| View original record | -2- Hs/Smth.6/KW.20.6.35. TABLE: Engine | No. of Valves & throat dia. (Inlet) | No. of Valves & throat dia. (Exhaust) | Valve Area / Piston Area (Inlet) | Valve Area / Piston Area (Exhaust) | Inlet… | ||
| scan0157 | Technical report discussing engine length and sleeve balance considerations for 6 and 8-cylinder engines. | ||
| View original record | -3- Hs/Smth.6/KW.20.6.35. Length of Engine. The width of the induction passage which should be provided between the cylinders appears to be purely a matter of opinion. We think that a conservative… | ||
| scan0158 | Sleeve drive torque, including friction, inertia, and potential rattles in worm gears. | ||
| View original record | -4- Hs/Smth.6/KW.20.6.35. Sleeve Drive Torque. The friction torque is indeterminate, but the sleeve should be made about .100" thick to avoid excessive peaks at the instant of firing. Owing to the… | ||
| scan0159 | Graph comparing the valve areas of sleeve versus poppet valves for a 3.500 bore engine. | ||
| View original record | VALVE AREAS - 3.500 BORE ENGINE DURATION OF VALVE OPENING 230° ____ SLEEVE VALVE - - - - POPPET VALVES (LEC 3855) IN 1.600 DIA Ex 1.400 DIA VALVE AREA - SQ. INS 2.5 2.0 1.5 1.0 0.5 0 INLET EXHAUST… | ||
| scan0160 | Blueprint comparing the cylinder block lengths of the Wraith, TSN's, and a Sleeve Valve engine. | ||
| View original record | WRAITH 34.0 TSN'S ENGINE 28.5 SLEEVE VALVE 33.0 FIG. 3 8 CYL 3.125 BORE S/V. ENGINE COMPARED WITH WRAITH & TSN'S ENGINE. | ||
| scan0161 | Comparison drawing of a 6 Cylinder 3.5 Bore Sleeve Valve engine and a Big Bore Bentley engine. | ||
| View original record | BENTLEY 26.5 SLEEVE VALVE 29.0 FIG. 2 6 CYL. 3.5 BORE S/V ENGINE COMPARED WITH BIG BORE BENTLEY. | ||
| scan0162 | Report estimating the variations in tappet clearance for an overhead camshaft engine due to temperature effects, comparing a Standard Head and a Ramp Head. | ||
| View original record | To Hs/Rm. King (handwritten) Hs/Smth.12/KW. 2.7.35. Overhead Camshaft Engine. Variation in Tappet Clearance. From measurements we have made on a Bentley engine, we estimate that on an overhead… | ||
| scan0163 | Cam and rocker head differences and proposals for quietening tappets on the Spectre engine. | ||
| View original record | -2- Hs/Smth.12/KW. 2.7.35. The differences between the two heads are due to the fact that in one case the cam is above the rocker and in the other, below. With neither head do the clearances vary by… | ||
| scan0164 | Variation in tappet clearance for overhead camshaft engines due to temperature effects. | ||
| View original record | X1129 To Hs/Rm. Hs/Smth.10/KW.4.7.35. Overhead Camshaft Engine. Variation in Tappet Clearance. We have been estimating the variation in tappet clearance we should have to provide for on an overhead… | ||
| scan0165 | Graphs showing ignition advance against compression ratio and engine speed for a turbulent head engine. | ||
| View original record | RICARDO & Co Engineers (1927) LTD., BRIDGE WORKS ENGINE TESTING LABORATORY. DRG No D4312 DATE 1-7-32 FILE Single Cyl. tests IGNITION ADVANCE FOR TURBULENT HEAD. RATE OF PRESSURE RISE 30 LBS/SQ IN PER… | ||
| scan0166 | Technical memorandum discussing the design and valving arrangements of sleeve valve car engines. | ||
| View original record | Hs/Bmth.6/KW.20.6.35. Sleeve Valves for Car Engines. We have looked into certain matters connected with the design of an 8-cylinder 3 1/4" bore and a 6-cylinder 3 1/4" bore sleeve valve engine. These… | ||
| scan0167 | Comparison of valve and piston areas for various engine models. | ||
| View original record | -2- Hs/Smth.6/KW.20.6.35. | Engine | No. of Valves & Throat dia. | Valve Area / Piston area | Inlet Area / Exhaust Area | | --- | --- | --- | --- | | | Inlet | Exhaust | Inlet | Exhaust | | | Sleeve… | ||
| scan0168 | Page discussing engine length and sleeve balance calculations for multi-cylinder engines. | ||
| View original record | -3- Length of Engine. The width of the induction passage which should be provided between the cylinders appears to be purely a matter of opinion. We think that a conservative estimate of this would be… | ||
| scan0169 | The torque characteristics of a sleeve drive, including friction, inertia, and potential issues. | ||
| View original record | -4- Ha/Smth.6/KW.20.6.35. Sleeve Drive Torque. The friction torque is indeterminate, but the sleeve should be made about .100" thick to avoid excessive peaks at the instant of firing. Owing to the… | ||
| scan0170 | Graph comparing the valve areas of Sleeve and Poppet valves for a 3.500 bore engine. | ||
| View original record | VALVE AREAS - 3.500 BORE ENGINE DURATION OF VALVE OPENING 230° ______ SLEEVE VALVE ----- POPPET VALVES (LEC 3855) IN 1.600 DIA EX 1.400 DIA VALVE AREA - SQ. INS 2.5 2.0 1.5 1.0 0.5 0 INLET EXHAUST… | ||
| scan0171 | Blueprint comparing the cylinder block dimensions of a 6-cylinder Sleeve Valve engine with a Big Bore Bentley engine. | ||
| View original record | BENTLEY 26.5 SLEEVE VALVE 29.0 FIG. 2. 6 CYL. 3.5 BORE S/V. ENGINE COMPARED WITH BIG BORE BENTLEY. 14.4.36 HS. 2065 | ||
| scan0172 | Blueprint comparing an 8-cylinder Sleeve Valve engine with the Wraith and TSN's engines. | ||
| View original record | WRAITH 34.0 TSN'S ENGINE 28.5 SLEEVE VALVE 33.0 FIG. 3 8 CYL. 3.125 BORE S/V. ENGINE COMPARED WITH WRAITH & TSN'S ENGINE. Hs 2066 | ||
| scan0173 | Out-of-balance couple caused by sleeve valves in a 12-cylinder 'Double-Six' engine. | ||
| View original record | Ha/Smth.7/KW.29.6.35. Sleeve Valves for Car Engines. Further to Ha/Smth6/KW.20.6.35. Sleeve Balance in a Double-Six Engine. The out of balance due to the sleeves in a 60°, 12 cylinder engine of… | ||
| scan0174 | Variation in tappet clearance for overhead camshaft engines due to temperature effects. | ||
| View original record | Hs/Smth.10/KW.4.7.35. Overhead Camshaft Engine. Variation in Tappet Clearance. We have been estimating the variation in tappet clearance we should have to provide for on an overhead camshaft engine… | ||
| scan0175 | Outlining the agreed procedure for Bentley single cylinder unit and engine head development. | ||
| View original record | X1129 Hs/Wd. Hs/Rm. Hs/Smith. E/Tsn. E/Psn. E.2/HP.16.9.35. re Bentley Single Cylinder Unit and Bentley Development. The position of the above development was discussed and the question of finding… | ||
| scan0176 | Typed document detailing design investigations and tests for engine cylinder heads. | ||
| View original record | - sheet 2 - E.2/HP.16.9.35. ---------------- between cylinder bores which increases the length of the engine approximately 3". (6) E/Tsn. will also make a design investigation into a four valve 2… | ||
| scan0177 | Design considerations for a Straight '8' Engine, including big-end area and construction. | ||
| View original record | X 1129 To E. c. to E/Tsn. HS/Smth.8/KW.23.9.35. Straight '8' Engine. We have been looking into the question of big end area for this engine. We anticipate that the power will peak at about 5,000… | ||
| scan0178 | Letter from Norton Motors to Mr. Robotham asking for information on Rolls-Bentley silencing arrangements. | ||
| View original record | PLEASE ADDRESS ALL COMMUNICATIONS TO THE FIRM & NOT TO INDIVIDUALS. [Sticker: SEE OUR EXHIBIT AT BICYCLE AND MOTOR CYCLE SHOW, NOV. 30 DEC. 7, OLYMPIA, Ground Floor 45] Norton Motors Ltd. TELEPHONES… | ||
| scan0179 | Pros and cons of belt-driven versus gear-driven dynamos for various car engines. | ||
| View original record | Sg. from E. SECRET E.1/HP.5.11.35. c.Wor.Hs. By. Mx. RE ENGINES. Replying to your memo Sg.10/E.4.11.35, the belt driven dynamo as used today is a modern development very different from the pre-War… | ||
| scan0180 | Pros and cons of belt drives versus chain drives for engine auxiliaries. | ||
| View original record | (2) With the machine on the exhaust side of the engine, however, and a three corner belt drive which we have set out, it is unfortunate that the direction of rotation causes the fan to be driven after… | ||
| scan0181 | The Rudge-Whitworth unit, comparing the performance of a new camshaft against the original. | ||
| View original record | To - Rm. c to HS/Edwards. (Struck through) X1129 Rm (Signature, struck through) LC Smith (Signature) RUDGE-WHITWORTH UNIT. Attached are blueprints giving the valve lift curve of the new camshaft… | ||
| scan0182 | Valve lift diagrams for a 500cc Rudge Unit, comparing modified and standard camshafts. | ||
| View original record | 500 C.C. RUDGE UNIT. VALVE LIFT DIAGRAMS. - MODIFIED AND STD CAMSHAFTS. VALVE TIMING AT .020" CLCE (MOD.) I.O. 19° A.T.D.C. E.O. 42° B.B.D.C. I.C. 58° A.B.D.C. E.C. 8° A.T.D.C. BORE: 3.346" STROKE:… | ||
| scan0183 | Graph showing power variations and B.M.E.P. of a 500cc Rudge unit with various exhaust systems against R.P.M. | ||
| View original record | 500 CC RUDGE UNIT POWER VARIATIONS WITH VARIOUS EXHAUST SYSTEMS. BORE 3.346" STROKE 3.464" C.R. 7.3/1 VALVE TIMING. I.O. 13° L E.O. 42° E I.C. 58° L E.C. 8° L SILENCED 1300 cc PIPES 440 cc PIPES No… | ||
| scan0184 | Comparative graph of Mean Effective Pressure (MEP) curves for Rudge and HP cylinder heads. | ||
| View original record | COMPARATIVE MEP CURVES FOR RUDGE & H.P. HEADS COMP RATIO 6.8/1 RUDGE CURVE FROM Hs/Wd 1/GB 9.11.35. OPEN EXHAUST. HP HEAD CURVES FROM Hs/Wd 2/GB. 27.5.35. SHEETS 1A & 4. 3 VALVE H.P. SHORT DURN TIMING… | ||
| scan0185 | Letter to Norton Motors Ltd. proposing to purchase a racing unit for single cylinder tests and to discuss silencing problems. | ||
| View original record | X1129 Exptl. Dept. Hs/Rm.10/KW. 13th November, 1935. Messrs. Norton Motors Ltd., Bracebridge Street, Birmingham 6. For the attention of Mr. Skinner. Dear Sirs, Thank you for your letter of October… | ||
| scan0186 | Letter from Norton Motors Ltd. acknowledging receipt of a communication. | ||
| View original record | PLEASE ADDRESS ALL COMMUNICATIONS TO THE FIRM & NOT TO INDIVIDUALS. X1129 Norton Motors Ltd. TELEPHONES ASTON CROSS 0776, 0777, 0778. TELEGRAMS 'NORTOMO' BIRMINGHAM A.B.C. CODE 5TH EDITION.… | ||
| scan0187 | Letter from Norton Motors Ltd. about supplying a racing engine and arranging a meeting to discuss the matter further. | ||
| View original record | PLEASE ADDRESS ALL COMMUNICATIONS TO THE FIRM & NOT TO INDIVIDUALS. Norton Motors Ltd. TELEPHONES ASTON CROSS 0776, 0777, 0778. TELEGRAMS "NORTOMO, BIRMINGHAM." A.B.C. CODE 5th EDITION. BRACEBRIDGE… | ||
| scan0188 | Minutes of a meeting held on 25th November 1935 to review single-cylinder car engine work. | ||
| View original record | Copies to Hs. Hs/Rm. Hs/Wd. K1129 Hs/Wd.1/GB.29.11.35. Hs/Smith, Hs/Wd/Edwards. E. E/Psn. CAR SINGLE CYLINDER WORK. Minutes of Meeting held on 25th Nov. 1935. Present :- Hs/Rm. Hs/Wd. Hs/Smith.… | ||
| scan0189 | Meeting notes regarding the design of a side valve head for the Bentley Universal Unit. | ||
| View original record | Hs/Wd.1/GB.29.11.35. No.2. On the design side E/Psn. is to look into the design of a side valve head to fit on the Bentley Universal Unit and to be based on details which Smith is obtaining from… | ||
| scan0190 | Minutes of a meeting regarding single-cylinder engine work and testing procedures. | ||
| View original record | 21129 Hs/Wd.1/GB.29.11.35. Copies to Hs. Hs/Rm. Hs/Wd. Hs/Smith, Hs/Wd/Edwards. E. E/Psn. CAR SINGLE CYLINDER WORK. Minutes of Meeting held on 25th Nov. 1935. Present :- Hs/Rm. Hs/Wd. Hs/Smith.… | ||
| scan0191 | Despatch note for returning Mr. Kaster's property, a box of model pieces for a slide valve engine, after examination. | ||
| View original record | 21129 D/BP. c. to G/Mt. Hs/Smth.2/KW.29.11.35. We are sending into the Stores for despatch to Walter Kaster, Esq., Ryton Bridge Hotel, London Road, Ryton-on-Dunsmore, Nr. Coventry :- 1 Box of Model… | ||
| scan0192 | Letter from the Experimental Department regarding the design and specifications of a slide valve engine. | ||
| View original record | Exptl. Dept. Hs/Smth.1/KW. 29th November,1935. Walter Kaster, Esq., Ryton Bridge Hotel, London Road, Ryton-on-Dunsmore, Nr. Coventry. Dear Sir, We are giving consideration to the slide valve engine… | ||
| scan0193 | Letter to Norton Motors Ltd. confirming potential dates for a visit from Mr. C.C. Skinner. | ||
| View original record | X1129 Exptl. Dept. Hs/Rn.5/KW. 30th November,1935. Messrs. Norton Motors Ltd., Bracebridge Street, Birmingham 6. For the attention of Mr. C.C. Skinner. Dear Sirs, Thank you for your letter of the 26th… | ||
| scan0194 | Letter from Norton Motors Ltd. acknowledging a communication and advising that Mr. C.G. Smith will attend to it upon his return from the Cycle & Motor Cycle Show at Olympia. | ||
| View original record | PLEASE ADDRESS ALL COMMUNICATIONS TO THE FIRM & NOT TO INDIVIDUALS X1129 Norton Motors Ltd. TELEPHONES ASTON CROSS 0776, 0777, 0778. TELEGRAMS "NORTOMO, BIRMINGHAM" A.B.C. CODE 5TH EDITION.… | ||
| scan0195 | Letter from Norton Motors Ltd. confirming the supply of a 500cc engine and proposing a technical information exchange. | ||
| View original record | X 1179 PLEASE ADDRESS ALL COMMUNICATIONS TO THE FIRM & NOT TO INDIVIDUALS. Norton Motors Ltd. TELEPHONES ASTON CROSS 0776, 0777, 0778. TELEGRAMS 'NORTOMO, BIRMINGHAM.' A.B.C. CODE 5th EDITION.… | ||
| scan0196 | Letter from Norton Motors Ltd. discussing confidentiality and arrangements for engine testing. | ||
| View original record | Norton Motors Ltd. Birmingham. CONTINUATION TO Messrs. Rolls-Royce Limited. DATE 18th December 1935 PAGE 2 Naturally, any information that we pass to you we should have to ask you to regard as in the… | ||
| scan0197 | New O.H.C. single cylinder unit for testing, detailing its construction and referencing attached schematics. | ||
| View original record | [Handwritten]: X1129 E/PSN.1/MN.28.12.35. [Signatures: RAAA & LeSmith] To ~~BY~~. Copy to ~~MRS~~. Hs/Rm. ~~Hs/Wd.~~ Hs/Royce. ~~Sykes~~. O.H.C. Car Single Cylinder Unit. We send you herewith LeC 4854… | ||