Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | The unsatisfactory performance of a Zenith carburettor and back axle on a Metallurgique car. | ||
| View original record | 53A (100H) (P 355. 18.8.10) E.P. 7252. 22nd November 1910. Dear C.J., With further reference to the Metallurgique car - the Zenith Carburettor on this car, which was considered to be a good one in the… | ||
| scan0002 | Design and lubrication issues with a car's axles, universal joints, connecting rods, and engine. | ||
| View original record | R.R. (2) grease and sawdust. Part of the casting, as I have pointed out before, is of very unscientific design. I should say the axles on this are scarcely safe. There is a spring drive on this car… | ||
| scan0003 | Letter discussing engine crank-shaft vibration, chassis performance, and a comparison with a Metallurgique car. | ||
| View original record | (3) I think I mentioned before that the engine has a crank-shaft vibration just before the usual 4-cylinder vibrations get uncontrollable. Generally speaking, however, the car runs exceedingly well… | ||
| scan0004 | Letter from Zenith Carburetter Co. Ltd. detailing recent motorsport successes. | ||
| View original record | CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY. Telegrams: "ZENITH. REGENT 4812, LONDON." Code: A. B. C. 5TH EDITION. Telephones REGENT 4812-4813. THE ZENITH CARBURETTER CO.… | ||
| scan0005 | Phantom induction pipe and suggesting various new carburettor configurations. | ||
| View original record | To Hs. E. BY. from R. c. to BJ. Wor. RG. DA. PHANTOM INDUCTION PIPE - PRESENT STD: X.8070 X.1053 X.8080 X.1452 X.5080 Agreed that this is better than many cars, some of which are horrible until warmed… | ||
| scan0006 | The procurement of two Zenith triple diffuser carburetters. | ||
| View original record | To Wd/Ms. from Hs. X1053 Hsl/LG2.4.27. Will you please obtain for us :- 2 Zenith triple diffuser carburetters - Type 42-HK. 42 mm. bore. Hs. | ||
| scan0007 | Request for an instrument board light, Zenith carburetters, and a price list for spot lights. | ||
| View original record | To ROY. from Hs/Rn. X1053 X3615 Hs/Rm5/LG12.4.27. We wish to obtain a single light for the 40/50 HP. instrument board. We believe there are a number of lamps on the market which would be suitable, in… | ||
| scan0008 | Requesting information on available sizes for a specific Zenith carburetter type (42-HK). | ||
| View original record | To Roy. from Hs/Rm. Y1053 Hs/Rml/LG14.4.27. With reference to the Zenith carburetter. The type which we require is 42-HK. What we want to know is what sizes are available in this type. We return the… | ||
| scan0009 | Letter requesting to trial two carburetters on a 20 HP car engine. | ||
| View original record | V4660 Expl: Dept: X5080 28th. May 1927. The Stromberg Motor Devices Ltd., Nulman's St., & Cheyne Walk, Chelsea, S.W.10. Dear Sirs, We should like to try two of your carburetters on our 20 HP. car… | ||
| scan0010 | Continuation of a letter discussing desired engine performance and testing single vs dual carburettors. | ||
| View original record | contd :- -2- Good 'pick up' from slow running on top gear when the throttle is suddenly opened is another of the desirable features we wish to preserve. Apart from the use of two carburetters, we also… | ||
| scan0011 | Letter from The Zenith Carburetter Co. Ltd. requesting a test report on two No.42HK carburettors. | ||
| View original record | X.1053 CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE," LONDON. Telephones MUSEUM 9106-9. Code: A.B.C. 5TH EDITION. THE ZENITH CARBURETTER CO.… | ||
| scan0012 | Request to send a triple diffuser Zenith carburetter for examination. | ||
| View original record | To Hs. from E. c. to BJ. X.1053. E2/M22.7.27. RE. CARBURETTERS. Please note R. would like you to send a triple diffuser Zenith carburetter down here for examination. E. | ||
| scan0013 | Letter from Stromberg Motor Devices Ltd. following up on carburetors sent for testing on a 20 HP engine. | ||
| View original record | Y5932 X4660 CUSTOMERS’ CARS ARE DRIVEN BY MEMBERS OF OUR STAFF AT CUSTOMERS’ RISK. STROMBERG MOTOR DEVICES LTD. CARBURETORS, WINDSHIELD WIPERS, PETROL FILTERS, SHOCK ABSORBERS. DIRECTORS: SIR PERCIVAL… | ||
| scan0014 | Confirming the dispatch of a Zenith triple diffuser carburetter for experimental work. | ||
| View original record | To E. from Hs/Rm. X.3841 X1053 Hs/Rm2/LG9.8.27. We have despatched to you today one Zenith triple diffuser Carburetter as requested in your E2/M22.7.27. We should be obliged if you will let us have… | ||
| scan0015 | The despatch of a Zenith triple diffuser carburetter on loan to Mr. Royce. | ||
| View original record | To BP. from Hs/Rm. c. to Mt. (Stores). X1053 Hs/Rml/LG9.8.27. We are sending into the Stores for despatch to Mr. Royce, West Wittering :- 1 Zenith triple diffuser carburetter. This is on loan to them… | ||
| scan0016 | Letter from Stromberg Motor Devices Ltd. regarding the testing of two Stromberg carburetors. | ||
| View original record | X3955 X4060 CUSTOMERS' CARS ARE DRIVEN BY MEMBERS OF OUR STAFF AT CUSTOMERS' RISK. STROMBERG MOTOR DEVICES LTD. CARBURETORS, WINDSHIELD WIPERS, PETROL FILTERS, SHOCK ABSORBERS. MILMAN'S STREET &… | ||
| scan0017 | Letter to Stromberg Motor Devices Ltd. regarding preliminary tests and road testing of experimental carburettors. | ||
| View original record | V393L VH660 Expl: Dept: Hs/1/Rm/LC. 16th. Aug. 1927. Messrs. The Stromberg Motor Devices Ltd., Milmans St. & Cheyne Walk, Chelsea S.W.10. Dear Sirs, With reference to your letter of the 15th.inst. We… | ||
| scan0018 | Letter from Stromberg Motor Devices arranging for an engineer to assist with carburetor adjustments. | ||
| View original record | 74660 CUSTOMERS' CARS ARE DRIVEN BY MEMBERS OF OUR STAFF AT CUSTOMERS' RISK. STROMBERG MOTOR DEVICES LTD. CARBURETORS, WINDSHIELD WIPERS, PETROL FILTERS, SHOCK ABSORBERS. DIRECTORS: SIR PERCIVAL… | ||
| scan0019 | Letter from Maurice Olley in America to E. W. Hives in Derby describing the features of the latest American Stromberg carburetter. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. x4660 Oy2-E-81927 August 19, 1927. Mr. E. W. Hives, Rolls-Royce Ltd., Derby, England. Dear Mr. Hives: Re Stromberg Carburetter I think you may be… | ||
| scan0020 | Poor slow running performance of the 20 HP engine and proposing a test using a Zenith carburetter. | ||
| View original record | Hs. from E. c. to BJ. X1053 E2/M24. 8.28. RE. 20 HP. SLOW RUNNING. X.5771 X.5080 X.1053 The general standard of slow running on the 20 HP. has never been superlatively high, and this we have… | ||
| scan0021 | Letter from Stromberg Motor Devices Ltd. regarding carburettor adjustments for a 20 HP car on test. | ||
| View original record | X 4660 CUSTOMERS' CARS ARE DRIVEN BY MEMBERS OF OUR STAFF AT CUSTOMERS' RISK. STROMBERG MOTOR DEVICES LTD. CARBURETORS, WINDSHIELD WIPERS, PETROL FILTERS, SHOCK ABSORBERS. DIRECTORS: SIR PERCIVAL… | ||
| scan0022 | Letter from Rolls-Royce of America discussing carburetter performance issues and potential improvements on Phantom and Silver Ghost cars. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. X4660 Oy19-E-92027 September 20, 1927 Mr. E. W. Hives, Rolls-Royce Ltd., Derby, England. Dear Mr. Hives: Re Carburetter. Whilst in England it was… | ||
| scan0023 | Letter discussing issues with annular jets on the Silver Ghost and Phantom models, and requesting a new 'straight through' carburetter. | ||
| View original record | Oy-19-E-92027 -2- September 20, 1927. Appears to give improved acceleration with our fuel, but of course we do not permit this as a standard operation. Finally, the narrow annular jets are scarcely… | ||
| scan0024 | Letter to Stromberg Motor Devices Ltd. about the readiness of a car fitted with a carburetter. | ||
| View original record | +4660 HS2/LG. 23rd. Sept. 1927 Messrs. The Stromberg Motor Devices Ltd., 173-175 Cleveland St., London W.1. Dear Sirs, Replying to your letter of the 15th. inst. We expect to be ready with the car… | ||
| scan0025 | Letter from Stromberg Motor Devices Ltd. confirming they will send an engineer in 10 to 14 days. | ||
| View original record | 4660 CUSTOMERS' CARS ARE DRIVEN BY MEMBERS OF OUR STAFF AT CUSTOMERS' RISK. STROMBERG MOTOR DEVICES LTD. CARBURETORS, WINDSHIELD WIPERS, PETROL FILTERS, SHOCK ABSORBERS. MILMAN'S STREET & CHEYNE WALK,… | ||
| scan0026 | Letter from Stromberg Motor Devices Ltd. regarding carburetter final road adjustments. | ||
| View original record | +4660 CUSTOMERS' CARS ARE DRIVEN BY MEMBERS OF OUR STAFF AT CUSTOMERS' RISK. STROMBERG MOTOR DEVICES LTD. CARBURETORS, WINDSHIELD WIPERS, PETROL FILTERS, SHOCK ABSORBERS. DIRECTORS: SIR PERCIVAL… | ||
| scan0027 | Letter from Stromberg Motor Devices Ltd. acknowledging a telegram and arranging for their Mr. Knott to make contact. | ||
| View original record | 4660 CUSTOMERS' CARS ARE DRIVEN BY MEMBERS OF OUR STAFF AT CUSTOMERS' RISK. STROMBERG MOTOR DEVICES LTD. CARBURETORS, WINDSHIELD WIPERS, PETROL FILTERS, SHOCK ABSORBERS. DIRECTORS: SIR PERCIVAL PERRY,… | ||
| scan0028 | Letter to Solex Ltd. arranging a visit to their Paris carburettor laboratory and discussing technical matters. | ||
| View original record | X1053 Expl: Dept: Hs/Rm4/LG29th. 29th. Sept. 1928. X1360 Messrs. Solex Ltd., 223-231 Marylebone Rd., London N.W.1. Dear Sirs, For the attention of Mr. Mantell. Further to our telephone conversation, I… | ||
| scan0029 | Letter from Stromberg Motor Devices Ltd. regarding the performance of their carburetor during a record-breaking run. | ||
| View original record | 44660 CUSTOMERS' CARS ARE DRIVEN BY MEMBERS OF OUR STAFF AT CUSTOMERS' RISK. STROMBERG MOTOR DEVICES LTD. CARBURETORS, WINDSHIELD WIPERS, PETROL FILTERS, SHOCK ABSORBERS. MILMAN'S STREET & CHEYNE… | ||
| scan0030 | Letter detailing the performance of a new Stromberg UX-4 carburetter on a Phantom vehicle. | ||
| View original record | X4660 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. December 3rd, 1928. OY3.R.12.3.28 Mr. E. W. Hives, Rolls Royce Ltd., Derby, England. Dear Mr. Hives: RE CARBURETTER Stromberg UX-4 We should like… | ||
| scan0031 | Report page discussing carburetter performance, features, and specific design elements like the main jet and throat. | ||
| View original record | OY3.R.12.3.28 - 2 - December 3rd, 1928. (6) The jets seem to be free from blockage with any reasonable filtering of the fuel. (7) Freedom from popping in exhaust. (8) Car in normal action sooner after… | ||
| scan0032 | Detailed description of carburettor adjustment mechanisms and their functions. | ||
| View original record | OY3.R.12.3.28 - 3 - December 3rd, 1928. (3) Main Restriction. This is in the bottom of the float chamber regulated within narrow limits by an adjusting screw with notched head. The range of adjustment… | ||
| scan0033 | Analysis of carburettor functions including starting, breather, idling, and sizing for various engines. | ||
| View original record | OY3.R.12.3.28 - 4 - December 3rd, 1928. Sketch SK-263 shows how air flow in the lower of the two air passages is reversed as the throttle opens increasing the suction on the jet and preventing a lean… | ||
| scan0034 | Technical letter detailing engine displacement figures, carburetter settings, and manifold design. | ||
| View original record | OY3.R.12.3.28 - 5 - December 3rd, 1928. This car has engine displacement 195.6 cu. ins. Compression Ratio ----------- 5.2 Displacement per foot--------- 67 cu. ins. Displacement per ton foot----- 44.5… | ||
| scan0035 | Requesting the return of a Zenith triple diffuser carburetter for an experiment on a 20 HP engine. | ||
| View original record | X 1053 To E. from Hs/Rm. Hs/Rm3/AD2.10.29. Some time ago we sent down to you a Zenith triple diffuser carburetter. We are anxious to utilise this carburetter in an experiment we are at present making,… | ||
| scan0036 | Test report on a 'Japan' induction system, comparing a single carburetter with a twin ramming pipe against a twin carburetter setup. | ||
| View original record | To R. From Hs/ACL. c. to Sg. Wor. c. to E. Da. c. to By. X4660 Hs/ACL.1/MJ.28.12.29. 'JAPAN' INDUCTION SYSTEM. TESTS WITH TWIN RAMMING PIPE & SINGLE CARBURETTER. X.5070. X.5080. X.3603. X.4660. For… | ||
| scan0037 | Carburettor experiments comparing single versus twin carburettor systems for improved distribution and acceleration on the Phantom model. | ||
| View original record | -2- are, however, modifying this so as to get the low speed readings. Also the distribution was not good when using the two Claudels and we think considerable improvement can be made by taking the… | ||
| scan0038 | Letter from Stromberg Motor Devices Ltd. regarding carburettor tests, patents, and future requirements. | ||
| View original record | +4660 CUSTOMERS' CARS ARE DRIVEN BY MEMBERS OF OUR STAFF AT CUSTOMERS' RISK. STROMBERG MOTOR DEVICES LTD. CARBURETORS, WINDSHIELD WIPERS, PETROL FILTERS, SHOCK ABSORBERS. DIRECTORS: SIR PERCIVAL… | ||
| scan0039 | Letter to Stromberg Motor Devices Ltd. about receiving a carburetter from the U.S.A. for testing. | ||
| View original record | X4660 Expl: Dept: Hs/6/LG. 15th. Jan. 1929. Messrs. The Stromberg Motor Devices Ltd., Milman's Street & Cheyne Walk, Chelsea S.W.10. Dear Sirs, Replying to your letter of the 14th.inst. We have heard… | ||
| scan0040 | Letter from Stromberg Motor Devices Ltd. regarding the testing of a Stromberg Carburetor and previous correspondence. | ||
| View original record | CUSTOMERS' CARS ARE DRIVEN BY MEMBERS OF OUR STAFF AT CUSTOMERS' RISK. STROMBERG MOTOR DEVICES LTD. CARBURETORS, WINDSHIELD WIPERS, PETROL FILTERS, SHOCK ABSORBERS. DIRECTORS: SIR PERCIVAL PERRY,… | ||
| scan0041 | Meeting with the Stromberg Carburetter Company regarding the suitability of their products for cars and aero engines. | ||
| View original record | S/W. To Rg. & Hs. from F. c. to Wor. c. to E. X4660 Mr. Black of the Stromberg Carburetter Company called at the office. He stated that he had a report made by Mr. Olley from America, in which Mr.… | ||
| scan0042 | Requesting details and instructions for a 'Japan' induction pipe to test a single Stromberg carburettor. | ||
| View original record | X466a To Bv. From Hs/ACL. Hs/ACL.4/AD29.11.29. X.5070 X.5080 X.4660 RE. 'JAPAN' INDUCTION PIPE. R. wishes us to see if we can get similar results to those given by twin carburetters by means of one… | ||
| scan0043 | Letter to The Zenith Carburetter Co. Ltd. accepting an offer to inspect two twin carburetter models. | ||
| View original record | X1053 Expl. Dept. Hs/ACL.2/MJ. Jan. 21st. 1930. The Zenith Carburetter Co.Ltd., 40 - 42, Newman Street, LONDON. W.1. Dear Sirs, Many thanks for your letter of the 20th.inst. We note that you have two… | ||
| scan0044 | Letter from The Zenith Carburetter Co. Ltd. regarding vertical twin carburetter specifications and samples. | ||
| View original record | W/05B CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE," LONDON. Code: A.B.C. 5TH EDITION. Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO.… | ||
| scan0045 | Concluding page of a letter from The Zenith Carburetter Co. awaiting a report. | ||
| View original record | THE ZENITH CARBURETTER CO., LIMITED. Sheet No. 2 Messrs Rolls Royce Ld. 20th Jan.1930. We await your report with much interest, and meanwhile, We remain, Yours faithfully, THE ZENITH CARBURETTER CO.… | ||
| scan0046 | Letter from Zenith Carburetter Co. Ltd. regarding sending two twin carburetter samples for examination. | ||
| View original record | X1053. CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE." LONDON. Code: A B. C. 5TH EDITION. Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO.… | ||
| scan0047 | Request for drawings and instructions to fit a twin-choke Zenith carburetter to a 20 HP 'Japan' engine. | ||
| View original record | X1053. BY. From Hs/ROL. Hs/ACL.2/MJ.30.1.30. x5080 x1053 TWIN CHOKE CARBURETTERS ON 20 HP. After the success of the Solex carburetter on Phantom ll we are anxious to try the effect of a twin choke… | ||
| scan0048 | Letter from Zenith Carburetter Co. Ltd. regarding two sample twin carburettors. | ||
| View original record | X1053. CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, 'PHONE." LONDON. Code: A B.C. 5TH Edition. Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO.… | ||
| scan0049 | Letter to the Zenith Carburetter Co. Ltd. regarding the supply and testing of carburettors for an engine. | ||
| View original record | X1053 Expl. Dept. HS/ACL.1/MJ. Feb. 7th. 1930. The Zenith Carburetter Co.Ltd., 40 - 42, Newman Street, LONDON. W.1. Dear Sirs, We are in receipt of your two twin choke carburetters for which we thank… | ||
| scan0050 | Letter from Zenith Carburetter Co. Ltd. regarding a custom pipe for a 105 D.C. Carburetter and arranging a visit from an expert. | ||
| View original record | X1053. CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE", LONDON. Code: A.B.C. 5TH Edition. Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO.… | ||
| scan0051 | Letter from Zenith Carburetter Co. Ltd. regarding a follow-up visit to adjust a sample carburetter. | ||
| View original record | X1053 CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE", LONDON. Telephones MUSEUM 9106-9. Code: A.B.C. 5TH EDITION. THE ZENITH CARBURETTER CO.… | ||
| scan0052 | Letter to Zenith Carburetter Co. Ltd. regarding the testing of an induction system and returning unsuitable carburetter samples. | ||
| View original record | X/053 Expl. Dept. Hs/ACL.3/MJ. March 13th.1930. The Zenith Carburetter Co.,Ltd., 40-42, Newman Street, LONDON. W.1. Dear Sirs, We thank you for your letter of the 6th.inst. Owing to the urgency of… | ||
| scan0053 | Request to purchase a twin choke Zenith carburettor for a 20/25 HP engine. | ||
| View original record | To Roy. From Hs/ACL. c. to Wor. X1053' Hs/ACL.4/MJ.13.3.30. We wish to purchase one twin choke Zenith carburetter type 105 D.C., similar to the model they lent us for inspection. The Zenith Co.,… | ||
| scan0054 | Letter from the Zenith Carburetter Co. Ltd. regarding the preparation of a 105 D.C. carburetter for an engine test. | ||
| View original record | 81053. CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE", LONDON. Code: A.B.C. 5TH EDITION. Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO.… | ||
| scan0055 | Summary of tests comparing twin Solex carburettors to standard ones on a Phantom II vehicle. | ||
| View original record | To Hs. From ACL. [Handwritten] X 1053 [Handwritten] X 7080. SUMMARY OF TESTS WITH TWIN CARBURETTERS ON PHANTOM 11. Our tests with Twin Solex carburetters on Phantom 11 show that the improvement so… | ||
| scan0056 | Suggested programme for 20 HP twin carburettor tests. | ||
| View original record | X1053. CHP. From Hs/ACL. Hs/ACL. 2/WJ. 24.4.30. X5080 X1053 SUGGESTED PROGRAMME FOR 20 HP. TWIN CARBURETTER TESTS. (1) Power curve with Std. engine. That is, 2 1/4 to 1 compression ratio, 110°… | ||
| scan0057 | Returning incorrect jets for Zenith Twin Type American Carburetters as they do not fit. | ||
| View original record | X1053. O.O. From Hs/Rn. c. to Stores. c. to S.O. Hs/Rn. 6/MJ. 8.5.30. We are sending into the Stores some jets which we have received for the Zenith Twin Type American Carburetters. These jets are no… | ||
| scan0058 | Twin carburettor tests and camshaft comparisons on the 'Japan' engine. | ||
| View original record | COPY. To R. From Hs/ACL. c. to Sg. Wor. c. to Rs. E. c. to Da. By. X1053 Hs/ACL.1/MJ.23.5.30. X.5080 X.1053. X.5090 X.5070 X 5230 TWIN CARBURETTER TESTS & CAMSHAFT COMPARISONS ON "JAPAN" ENGINE. We… | ||
| scan0059 | Induction system tests, comparing riser pipe lengths, bore diameters, choke sizes, and the effectiveness of a 'hot spot' system. | ||
| View original record | -2- HS/ACL.1/WJ.23.5.30.Contd. tests it was an advantage to keep the riser pipes as short as possible both with regard to power output and quick engine response to throttle opening. The hot spot was… | ||
| scan0060 | Engine performance, comparing results from tests with different camshaft durations (110°, 112°, 116°) and carburetter setups. | ||
| View original record | -3- Hs/ACL.1/MJ.23.5.30.Contd. at low R.P.M. full throttle. We found we could open up the brake to maximum R.P.M. and the engine would speed up without the slightest uneveness. With the Std. six port… | ||
| scan0061 | Summary of experiments on the 'Japan' engine, detailing results for twin carburetters, camshafts, induction systems, and throttle response. | ||
| View original record | -4- Hs/ACL.1/MJ.23.5.30. Contd. and 112° long duration camshaft. The results of our experiments on "Japan" can be summarised as follows :- (1) Twin carburetters give a very definite gain in power over… | ||
| scan0062 | Table showing actual valve timings taken from an engine during twin carburettor tests on 'Japan'. | ||
| View original record | ACTUAL VALVE TIMING TAKEN ON ENGINE WITH .020 TAPPET CLCE. CAMSHAFT. | 116° | 112° | 110° IN. OPENS | 13° A.T.C. | 7° A.T.C. | 16° A.T.C. IN CLOSES | 48° A.B.C. | 43° A.B.C. | 37° A.B.C. EX. OPENS |… | ||
| scan0063 | Performance graph comparing large and small bore induction manifolds on a 'Japan' engine with twin Zenith carburettors. | ||
| View original record | TWIN ZENITH CARBS. ON "JAPAN." COMPARISON OF LARGE & SMALL BORE INDUCTION MANIFOLD. 26 M/M CHOKES IN CARB. 5.25/1 COMPN RATIO. 116° CAMSHAFT. OPEN EXHAUST. SMALL BORE PIPE = LARGE BORE PIPE = V 867.… | ||
| scan0064 | Performance graph comparing different camshaft configurations on a 'Japan' engine, plotting Brake Horsepower and Brake Mean Effective Pressure against engine RPM. | ||
| View original record | V868. CAMSHAFT COMPARISONS ON "JAPAN" TWIN ZENITH CARBS - 26 M/M CHOKES. SMALL INDN PIPE (1.25 INT. DIA) 5.25/1 COMPN RATIO. OPEN EXHAUST. B.H.P. (CORRECTED FACTOR) B.M.E.P. lbs/sq" R.P.M. B.M.E.P.… | ||
| scan0065 | Performance graph comparing Twin Zenith and Standard Chassis carburetters with various camshafts. | ||
| View original record | TWIN ZENITH CARBURETTER ON 'JAPAN'. COMPARISON WITH STD CHASSIS CARBURETTER. ZENITH USED WITH 26 m/m CHOKES - SMALL BORE INDN PIPE - 112° & 116° CAMSHAFTS - 5.25/1 COMPN RATIO. OPEN EXHAUST. B.H.P.… | ||
| scan0066 | Blueprint detailing the arrangement of a twin Zenith carburettor and induction pipe on a Japan engine. | ||
| View original record | V870., INLET TO HOT SPOT, 1.250" INSIDE DIA., 3.125, 2.062, PIPES TAPER FROM / 1.250 DIA To 1.400 DIA / To MATCH CARB THROTTLES, 1.400 DIA THROTTLE BORES, OUTLET FROM HOT SPOT, ARRANGEMENT OF TWIN… | ||
| scan0067 | Road test comparison of Twin Zenith and Solex carburetters on a 'Japan' engine with recommendations for future design. | ||
| View original record | To R. From Hs/ACL. c. to SS. Wor. c. to E. Da. c. to HY. X1053 Hs/ACL.1/WJ.11.6.30. X5080 X1053 X3603 TWIN CHOKE CAR CARBURETTERS. We have carried out a few road tests on the Twin Zenith carburetter… | ||
| scan0068 | Technical discussion comparing emulsion type diffusers in carburettors with plain tube jets for optimal engine performance. | ||
| View original record | -2- Hs/A.X.1/A.L.11.8.21.Contd. size than the model Solex we are sending you. The induction branches we think should be the same size as the inlet ports or only a little smaller. We could build up one… | ||
| scan0069 | Carburettor performance, fuel consumption, and ongoing road tests on Zenith and Stromberg models. | ||
| View original record | -3- Zenith 140 miles was done with the accelerating pump and 140 without and a careful check made of the fuel consumption. No difference could be detected in either case. We think the injection for… | ||
| scan0070 | Diagrammatic sketch of a Stutz-Zenith carburettor. | ||
| View original record | V184, IDLING DISCHARGE HOLE, AIR NOZZLE, IDLING AIR ADJUSTMENT, IDLING JET, FLOAT FULCRUM PIN, FLOAT, NEEDLE VALVE, RANGE COMPENSATOR, PETROL FILTER, DRILLED THROTTLE VALVE, PRIMARY VENTURI,… | ||
| scan0071 | Considering the function and characteristics of accelerating pumps for car carburetters, with reference to a Stromberg aircraft model. | ||
| View original record | X4660 To R. From Hs/ACL. c. to E. c. to Rg. Hs/ACL.2/MJ.11.6.30. X4660 X4529. CARBURETTERS - ACCELERATING PUMPS. Considering the question of accelerating pumps for car carburetters we have been able… | ||
| scan0072 | Carburettor performance, comparing Stromberg, Zenith, and Claudel models, particularly regarding accelerating pumps. | ||
| View original record | -2- Strombergs', Zeniths', and Claudels'. Talking with Mr. Penn of the R.A.E. at Farnborough who deals with the engine work, he says that excellent results have been obtained from the Claudel aero… | ||
| scan0073 | Request for a patent search regarding the Stromberg carburetter's accelerating petrol pump. | ||
| View original record | X4660 By/NHW. from E. c. By. Hs. EL/M1.7.30. X.4660 X.2677 STROMBERG CARBURETTER PATENTS. On the down draught Stromberg carburetter the vacuum of the induction pipe is used for operating the… | ||
| scan0074 | Test drive report on a 25 HP car fitted with a double Zenith carburetter. | ||
| View original record | Sg. from R. C. Wor. Hs. By. X 1053 R7/M19.7.30. 25 HP. CAR WITH DOUBLE ZENITH CARBURETTER. X.5080 X.1053 I drove this car for some miles and was very impressed with the carburetter, which appeared to… | ||
| scan0075 | Letter from Stromberg Motor Devices Ltd. clarifying their non-involvement with the Chambers or E.T.C. Carburetor. | ||
| View original record | X4660. CUSTOMERS' CARS ARE DRIVEN BY MEMBERS OF OUR STAFF AT CUSTOMERS' RISK. STROMBERG MOTOR DEVICES LTD. CARBURETORS, WINDSHIELD WIPERS, PETROL FILTERS, SHOCK ABSORBERS. MILMAN'S STREET & CHEYNE… | ||
| scan0076 | Letter from Stromberg Motor Devices Ltd requesting the return of carburetter parts supplied for testing. | ||
| View original record | 84660 C O P Y. STROMBERG MOTOR DEVICES LTD. MILMAN'S STREET & CHEYNE WALK, CHELSEA. S.W.10. AW/PT. 3rd Sept, 1930. Messrs. Rolls-Royce Limited. DERBY. Dear Sirs, We note from our records of… | ||
| scan0077 | Letter to The Zenith Carburetter Co. regarding noise issues and potential modifications for a 105.DC twin carburetter. | ||
| View original record | 81053. Expl. Dept. Hs/Rm.5/KT. 22nd April 1931. The Zenith Carburetter Co. Ltd., 40-42, Newman Street, London. W.1. For the attention of Mr. T.L. Turner. Dear Sir, You will recollect at the beginning… | ||
| scan0078 | Typed letter discussing a job, ordering a model 105.DC, and arranging a representative's visit. | ||
| View original record | - 2 - If you are willing to go forward with the job as we have outlined it, we can discuss exact details after your representative's visit. We are ordering from you a second model 105.DC for our own… | ||
| scan0079 | The order of a Zenith 105.DC twin pump carburetter for a 25HP model. | ||
| View original record | Y1053. To Roy. From Hs/Rm. Hs/Rm.20/KT.22.4.31. ZENITH CARBURETTER. Will you please order for us from the Zenith Co. one 105.DC model twin pump type carburetter. You will recollect that we had one of… | ||
| scan0080 | Letter from Zenith Carburetter Co. Ltd. arranging a meeting to discuss their 105 D.C. twin carburetter. | ||
| View original record | 81053. CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE", LONDON. Telephones MUSEUM 9106-9. Code: A B C. 5TH EDITION. THE ZENITH CARBURETTER CO.… | ||
| scan0081 | Letter to The Zenith Carburetter Co. Ltd. arranging a meeting with their representative. | ||
| View original record | 81053. Expl. Dept. HS/Rm.S/KT. 24th April 1931. The Zenith Carburetter Co. Ltd., 40-42 Newman Street, London, W.1. For the attention of Mr. T.L.Turner. Dear Sir, We thank you for your letter,… | ||
| scan0082 | Telegram from Roycar requesting a selection of idling compensators to be brought. | ||
| View original record | X1053 Ho/ks 27-4-31. "ZENICARBUR, PHONE" LONDON. PLEASE BRING SELECTION OF IDLING COMPENSATORS WITH YOU TOMORROW Roycar. | ||
| scan0083 | Letter from Zenith Carburetter Co. Ltd. discussing carburetter models, testing and supply. | ||
| View original record | X1053. CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE", LONDON. Code: A.B.C. 5TH EDITION Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO.… | ||
| scan0084 | Letter from Zenith Carburetter Co. regarding fitting carburettors to a 6-cylinder engine. | ||
| View original record | THE ZENITH CARBURETTER CO., LIMITED. Sheet No. 2. Messrs. Rolls-Royce, Ltd. 29th April 1931. Mr. Lovesey could not be conveniently fitted on a 6 cylinder engine of your design. The only alternative… | ||
| scan0085 | Confirming the substitution of a Zenith carburetter model from Type 105 to 36 DU on an order. | ||
| View original record | Hs/Rm. RECEIVED 1 MAY 1931 81053 ROY/MS4/P1.5.31. ZENITH CARBURETTER In accordance with your memo. Hs/Rm20/KT.22.4.31, we sent an official order to the Zenith Carburetter Co. for one 105.DC. Model… | ||
| scan0086 | Letter to the Zenith Carburetter Co. regarding the fitting of downdraught carburettors and induction manifold design. | ||
| View original record | 71053. Expl. Dept. Hs/LgV.7/KT. 4th May 1931. The Zenith Carburetter Co, Ltd., 40-42, Newman street, London. W.1. Dear Sirs, We note in your letter of the 29th. that you cannot conveniently fit your… | ||
| scan0087 | Letter from Zenith Carburetter Co. Ltd. regarding the design and testing of their inverted carburettors for a 20 HP six-cylinder engine. | ||
| View original record | K1053 CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE", LONDON. Telephones MUSEUM 9106-9. Code: A.B.C. 5TH EDITION. THE ZENITH CARBURETTER CO.… | ||
| scan0088 | Letter from The Zenith Carburetter Co. regarding modifications to a carburetter pipe. | ||
| View original record | THE ZENITH CARBURETTER CO., LIMITED. Sheet No. 2. Messrs. Rolls-Royce Ltd. 7th May 1931. detrimental in any way. You will notice that on this drawing we have flattened the pipe at the corner on top of… | ||
| scan0089 | Report comparing a Zenith carburettor's float chamber design and performance against a twin float model, focusing on flooding during cornering. | ||
| View original record | To R. From Ha/Lov. c. to SG. Nor. c. to Rg. R. c. to Sy. 1053. Ha/Lov.1/RT. 7. 5. 31. X1053 XU5-9. CAR CARBURETTERS - FLOAT CHAMBERS. We have looked at several makes of carburetters to see how they… | ||
| scan0090 | Carburettor flooding, accelerating pumps, and future development for supercharged aero engines. | ||
| View original record | - 2 - Hs/Lov.1/KT.7.5.31.contd. of the needle valve and so allowing a straight passage of fuel through the carburetter. Slight diffuser flooding under certain conditions probably takes place on a good… | ||
| scan0091 | Notification regarding the change of address for Stromberg Motor Devices Ltd. | ||
| View original record | Hs. c. BY/NW 84660. BY9/G.21.5.31. STAMP: RECEIVED 1931 MAY 21 STROMBERG CARBURETTERS. ------------------------- I am informed by Mr. Anderson, representative for Stromberg Motor Devices Ltd. that… | ||
| scan0092 | Request to detail the induction pipe for a Zenith 36 D.U.P. twin choke carburetter on a 25 HP engine. | ||
| View original record | 81053, To By. From Hs/Lov. Hs/Lov.4/MJ.8.5.31. x5080. INDUCTION PIPE FOR 25 HP. We wish to try out a Zenith 36 D.U.P.twin choke carburetter on the 25 HP. We have received from the Zenith Co., a… | ||
| scan0093 | Confirming the despatch of a Zenith Triple Diffuser carburetter to Mr. Elliot. | ||
| View original record | Stores. From Hs/Lov. c. to S.O. O.O. X1053. Hs/Lov.7/MJ.11.5.31. We are sending into the Stores for despatch to Mr. Elliot, Elmstead, West Wittering :- One horizontal Zenith Triple Diffuser… | ||
| scan0094 | Dimensions of a Zenith carburetter and the despatch of a horizontal Triple Diffuser Zenith carburetter. | ||
| View original record | 81053. To E. From Hs/Lov. Hs/Lov.8/MJ.11.5.31. The appended print shews the chief dimensions of the single down-draught carburetter Type 36-VI. This is the size that Zenith's recommend. We are also… | ||
| scan0095 | Letter from Zenith Carburetter Co. Ltd. concerning a suggested layout for an induction pipe on a 20 HP six-cylinder engine. | ||
| View original record | X1053. CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE", LONDON. Code: A.B.C. 5TH Edition. Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO.… | ||
| scan0096 | Selection and return of carburetter parts supplied by the Zenith Carburetter Co. | ||
| View original record | X1053 Hs/Rm. ROY/MS6/P.12.5.31 Kindly note, in addition to the Carburetter, the Zenith Carburetter Co. have supplied the following details for selection, some of which, I understand, will be… | ||
| scan0097 | Slow running schemes and experiments conducted on twin choke carburettors. | ||
| View original record | To R. from Hs/Lov. c. Sg. c. Wor. E. c. Da. Hy. H053. Hs/Lovl/AM15.5.31. x7080. x1053. P.2. TWIN CHOKE CARBURETTERS. The slow running scheme we have employed on the twin choke carburetter fitted to… | ||
| scan0098 | Technical report on carburetter performance, detailing issues with idling mixture, metering, and proposed modifications. | ||
| View original record | He/Lovl/AD15.5.31 contd. -2- Now closing the throttles down to the slowest idling speed it was found the adjusting screw opposite the club foot (No.2 on diagram) had to be fairly well opened. The… | ||
| scan0099 | Description of the Zenith slow running scheme and accelerator pump for a double choke carburetter (36 D.U.P.). | ||
| View original record | -3- Hs/Lovl/AM15.5.31 contd. Zenith slow running Scheme. We have just examined one of the latest double choke Zenith carburetters (36 D.U.P.) which has one or two interesting features. The slow… | ||
| scan0100 | Technical description of carburettor components including the piston, accelerator pump, slow running unit, and Zenith float. | ||
| View original record | Hs/Lovl/AH15.5.31 contd. -4- The piston is a working fit in the cylinder and the fuel replenishment obtained past a little loose disc valve attached to the base of the piston. The accelerating fuel is… | ||
| scan0101 | Diagram showing the mechanism of a Phantom II Twin Choke Carburettor. | ||
| View original record | P.II TWIN CHOKE CARB. No.1. ADJ SCREW Club Foot. No.2. ADJ SCREW. ael | ||
| scan0102 | Blueprint showing a modification for slow running on Phantom II twin-choke carburettors. | ||
| View original record | MODIFICATION TO SLOW RUNNING ON TWIN CHOKE P.II CARBS. ECCENTRIC DISCHARGE HOLE IN ROTATING BRASS PLUG SCREW HEAD FOR ROTATING BRASS PLUG TO ADJUST TICK OVER MIXTURE THESE PASSAGES BLANKED [Stamp… | ||
| scan0103 | Schematic diagram of a Zenith carburettor's slow running system. | ||
| View original record | ZENITH SLOW RUNNING SCH THROTTLE EDGE TOP DISCHARGE HOLE FOUR AIR HOLES DRILLED DOWN TO INTAKE SMALL DISCHARGE HOLE ABOVE THROTTLE. DISCHARGE HOLE WITH MOVEABLE RESTRICTIONS UNCOVERED WHEN THROTTLE IS… | ||
| scan0104 | Letter to Zenith Carburetter Co. regarding a trial scheme for 36 V.I. carburetters and a double carburetter induction pipe. | ||
| View original record | 81053 Expl. Dept. Hs/Rm.1/KT. 18th May. 1931. The Zenith Carburetter Co. Ltd., 40-42, Newman Street, London, W.1. Dear Sirs, We thank you for your letter of the 12th. instant, together with the scheme… | ||
| scan0105 | Scheme for an induction pipe to fit two separate Zenith carburettors to a 25 HP engine. | ||
| View original record | RHC. From Hs/Rm. X1053. Hs/Rm.1/KT.20.5.31. INDUCTION PIPE FOR TWO SEPARATE ZENITH CARBURRETTERS. Attached herewith is a scheme No.X.782. for fitting two single Zenith 36.V.I. carburetters to the 25… | ||
| scan0106 | The purchase of two 36.V.I. carburettors for a 25 HP model. | ||
| View original record | To Roy. From Hs/Rm. c. to Wor. Y1053. Hs/Rm.2/KT.20.5.31. Will you please order for us from the Zenith Carburetter Co., 40-42, Newman Street, London., two 36.V.I. carburetters. These are for the 25… | ||
| scan0107 | Providing details of an air silencer suitable for twin Zenith carburetters. | ||
| View original record | Copy. X1053. To RHC. From Hs/Rm. Hs/Rm.3/KT.20.5.31. AIR SILENCER FOR TWIN ZENITH CARBURETTER. Attached herewith details of an air silencer which will suit both twin Zenith carburetters that we have.… | ||
| scan0108 | Letter to the Zenith Carburetter Co. requesting a diagram and confirming details of a 36 D.U.P. carburetter. | ||
| View original record | 81053. Expl. Dept. Hs/Rm.6/KT. 20th May, 1931. The Zenith Carburetter Co. Ltd., 40-42, Newman Street, London, W.1. Dear Sirs, With reference to your 36 D.U.P. carburetter we note, that the starting… | ||
| scan0109 | Request to The Zenith Carburetter Co. for descriptive material on two downdraught carburetters. | ||
| View original record | 01053. Expl. Dept. Hs/m.3/KT. 22nd May, 1931. The Zenith Carburetter Co. Ltd., 40-42, Newman Street, London. W.1. Dear Sirs, With reference to the two single downdraught carburetters that you are… | ||
| scan0110 | Letter from Zenith Carburetter discussing the features of the 36 D.U.P. carburetter model. | ||
| View original record | Y 1053. CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE", LONDON Code: A.B.C. 5TH EDITION Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO.… | ||
| scan0111 | Letter from the Zenith Carburetter Co. describing a specific carburetter's construction. | ||
| View original record | THE ZENITH CARBURETTER CO., LIMITED Sheet No. 2. Messrs. Rolls Royce Ltd., 26. 5. 1931. this particular carburetter, but its construction is exactly the same as the single models described in the… | ||
| scan0112 | Letter from Zenith Carburetter Co. Ltd. regarding the availability of printed matter for a down-draft carburettor. | ||
| View original record | 81053. CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE," LONDON Code: A.B.C. 5TH EDITION Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO. LTD.… | ||
| scan0113 | Instructions for dismantling and cleaning the downdraught Zenith carburetter type VI. | ||
| View original record | THE ZENITH CARBURETTER CO., LIMITED. Sheet No. 1. INSTRUCTIONS FOR DISMANTLING AND CLEANING THE DOWNDRAUGHT ZENITH CARBURETTER TYPE VI. The only attention required by the carburetters is to keep them… | ||
| scan0114 | Page 2 of instructions for Zenith carburetter adjustment and disassembly. | ||
| View original record | THE ZENITH CARBURETTER CO., LIMITED. Sheet No. 2. provided with a hole across and halfway up their length into which a stiff rod can be inserted for unscrewing them. The strangler bodycan then be… | ||
| scan0115 | Letter to the Zenith Carburetter Co. querying the suitability of a 36 D.U.P. carburetter for a 3 1/4 litre engine. | ||
| View original record | X1053. Expl. Dept. 29th May. 1931. Hs/Rm.5/KT. The Zenith Carburetter Co. Ltd., 40-42, Newman Street, London. W.1. Dear Sirs, We thank you for your letter of the 27th. instant together with print of… | ||
| scan0116 | Blueprint of an adapter for an air silencer for a twin choke Zenith carburettor. | ||
| View original record | V1143 3.150 2.000 1.300 RAD 1.500 .150 .137 .3125 DIA .50 RAD 2.050 RAD 5.000 1.910 GENERAL THICKNESS OF METAL .150 A 4.250 .250 RAD. 2.600 3.450 1.200 RAD 1.650 RAD. 3.700 4 HOLES DRILL & TAP 2BA… | ||
| scan0117 | Letter from Zenith Carburetter Co. Ltd. advising on the correct carburetter and choke size for a 3½ litre engine. | ||
| View original record | 81053. CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE," LONDON. Code: A.B.C. 5TH Edition. Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO.… | ||
| scan0118 | Letter from The Zenith Carburetter Co. regarding choke sizes and the suitability of a 36 twin carburetter. | ||
| View original record | THE ZENITH CARBURETTER CO., LIMITED. Sheet No. 2. Messrs. Rolls-Royce, Ltd. 1st June 1931. into account the fact that the suction from three cylinders is not as steady as in the case of a 4 cylinder… | ||
| scan0119 | Requesting the insertion of air passages into an air silencer for a Zenith twin carburetter as a preliminary experiment. | ||
| View original record | RHC. from Hs/Rm. Hs/Rml/AD8.6.31. AIR SILENCER FOR ZENITH CARBURETTER. Will you please insert the following air passages in the air silencer you have made for the twin carburetter as a preliminary… | ||
| scan0120 | Hand-drawn diagram with dimensions for an air silencer for a twin-choke Zenith carburetter. | ||
| View original record | AIR SILENCER FOR TWIN-CHOKE ZENITH CARBURETTER EACH TUBE TO HAVE 4 LESS To FOLLOWING DIMENSION OF "A" OUTER TUBE "A" = .450 INTERMEDIATE TUBE "A" = .600 INNER TUBE "A" = 1.000 .500 | ||
| scan0121 | Letter to The Zenith Carburetter Co. requesting missing chokes and jets for two carburettors. | ||
| View original record | 81053, HS/Rml/AD. June 25th, 1931. The Zenith Carburetter Co.Ltd. 40-42, Newman St. London, W.1. Dear Sirs, We have received the two 36 V.1 carburetters but find that you have omitted to enclose… | ||
| scan0122 | Letter from The Zenith Carburetter Co. Ltd. regarding a supply of carburetter parts. | ||
| View original record | 81053. CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE", LONDON Code: A.B.C. 5TH Edition. Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO.… | ||
| scan0123 | Letter to Zenith Carburetter Co. Ltd. discussing issues with a 36 DUP carburetter and the promise of the 36 V1 model. | ||
| View original record | c. to Mr. Mills O.O. 81053 Expl. Dept. Hs/Rm.9/MJ. June 29th.1931. The Zenith Carburetter Co. Ltd., 40/42, Newman St., LONDON.W.1. Dear Sirs, We thank you for your letter of the 26th.inst. with… | ||
| scan0124 | Invoice from Zenith Carburetter Co. for Type 36 V.I. Carburetter parts. | ||
| View original record | Hs/Rm. 81053. ROY/MS8/P.30.6.31. In accordance with yours Hs/Rm2/KT.20.5.31, we have received from the Zenith Carburetter Co. an invoice for 2 - Type 36 V.I.Carburetters @ 75/- each, with the… | ||
| scan0125 | Letter from Zenith Carburetter Co. Ltd. discussing fitting downdraft carburetters to 20/25 HP engines. | ||
| View original record | Y1053. CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE, LONDON Code: A.B.C. 5TH EDITION. Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO. LTD.… | ||
| scan0126 | Letter from Zenith Carburetter Co. regarding modifications to the carburetter hot spot. | ||
| View original record | THE ZENITH CARBURETTER CO., LIMITED. Sheet No. 2. Messrs. Rolls-Royce, Ltd. 1st July 1931. You will notice that in order to increase the efficiency of the hot spot under the carburetter, a baffle has… | ||
| scan0127 | Schematic showing the outside view and overall dimensions of a Zenith 42 VI carburetter. | ||
| View original record | OUTSIDE VIEW & OVERALL DIMENSIONS ENLARGED PLAN OF FLOAT CHAMBER SHOWING DISPOSITION OF JETS ECONOMY JET MAIN JET COMPENSATING JET 85° TO OPEN 90° TO CLOSE MINIMUM CLEARANCE REQD. FOR REMOVING FILTER.… | ||
| scan0128 | Blueprint for a suggested induction pipe for a 20-25 HP engine, created by The Zenith Carburetter Co Ltd. | ||
| View original record | MINIMUM CLEARANCE REQD FOR REMOVING FILTER. MINIMUM CLEARANCE REQD FOR REMOVING CARB BOWL. FLANGE AT 40° TO CENTRE CL OF ENGINE ORIGINAL CL OF PIPE 3/8 WHIT STUDS. BAFFLE PLATE EX. INLET EX. OUTLET… | ||
| scan0129 | The supply of various jet and choke tube parts for two type 36 Vl carburettors for testing purposes. | ||
| View original record | File. X1053. R. Mathews from Hs/Rm. Hs/Rm2/AD2.7.31. We hand you herewith the following parts for the two type 36 Vl. carburetters which you have :- 10 Main jets. 11 Composite jets. 2 Choke tubes. 4… | ||
| scan0130 | Letter from Zenith Carburetter Co. Ltd. regarding the progress of down-draft carburettor tests. | ||
| View original record | 81053. CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE", LONDON. Code: A.B.C. 5TH EDITION. Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO.… | ||
| scan0131 | Letter to Zenith Carburetter Co. Ltd. regarding the status of carburetter testing. | ||
| View original record | 81053. Hs/Rm1/AD. August 15th, 1931. The Zenith Carburetter Co.Ltd. 40-42 Newman St. London, W.1.. For the attention of Mr. Turner. Dear Sirs, We thank you for your letter of the 4th inst. We regret… | ||
| scan0132 | Unresolved invoice for carburettor parts under testing from Zenith Carburetter Co. Ltd. | ||
| View original record | 81053. Hs/Rm. G/Gn/CA.13/MM/21/9/31. We still have held in abeyance an invoice from The Zenith Carburetter Co.Ltd., dated 26th June 1931, on which we are charged with the undermentioned parts. As we… | ||
| scan0133 | The return of parts to the Zenith Carburetter Co. | ||
| View original record | 81053. G/Gn/CA. from Hs/Rm. Hs/Rm.2/AD22.9.31. With reference to G/Gn/CA.13/MM21.9.31 we have sent the whole of the parts mentioned into the Stores for return to the Zenith Carburetter Co. Hs/Rm. | ||
| scan0134 | Letter from Zenith Carburetter Co. Ltd. regarding tests on a down-draught carburetter. | ||
| View original record | 81053 CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE", LONDON. Code: A.B.C. 5TH EDITION. Telephone: MUSEUM 9106-9. THE ZENITH CARBURETTER CO.… | ||
| scan0135 | Letter to Zenith Carburetter Co. Ltd. regarding the discontinuation of tests on down-draught carburetters due to safety concerns from Sir Henry Royce. | ||
| View original record | X 1053. Expl. Dept. Hs/Rm.2/MJ. October 29th.1931. The Zenith Carburetter Co. Ltd., 40-42, Newman Street, London.W.1. Dear Sirs, We thank you for your letter of the 26th.inst. We have carried out a… | ||
| scan0136 | Letter from Zenith Carburetter Co. Ltd. discussing downdraft carburettors and new aeroplane carburettors. | ||
| View original record | X1053. CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE", LONDON. Code: A.B.C. 5TH EDITION. THE ZENITH CARBURETTER CO. LTD. Telephones MUSEUM… | ||
| scan0137 | Page 2 of a letter from The Zenith Carburetter Co. arranging a representative's visit. | ||
| View original record | THE ZENITH CARBURETTER CO., Sheet No. 2. LIMITED. Messrs. Rolls-Royce Ltd., 30. 10. 1931. arrange for one of our representatives to see you in about a week or ten days' time. Thanking you in… | ||
| scan0138 | Letter from Bendix-Perrot Brakes Ltd. discussing comparative carburetor performance and enclosing mixture ratio curves. | ||
| View original record | YH660 BENDIX-PERROT BRAKES LTD. MECHANICAL BRAKES for AUTOMOTIVE VEHICLES CABLES & TELEGRAMS: "BENDIXCORP-BIRMINGHAM" TELEPHONES: ACOCKS GREEN, 1601-2-3. Kings Road TYSELEY BIRMINGHAM DIRECTORS:… | ||
| scan0139 | Letter from Bendix-Perrot Brakes Ltd. discussing carburettor mixture curves and the Stromberg Carburetor. | ||
| View original record | -2- BENDIX-PERROT BRAKES LTD. that the mixture ratios delivered are quite good, in spite of this mechanical defect. The other curve of the vertical carburetor, however, approaches the ideal mixture… | ||
| scan0140 | Carburettor metering graph plotting mixture ratio against air flow for a Stromberg UXT.3 model. | ||
| View original record | EXPERIMENT ON STROMBERG, UXT.3. SHEET NO. CARBURETOR METERING MIXTURE RATIO LB. FUEL PER LB. AIR DATE Form 599 2M 6-30 AIR FLOW LB. PER MIN. BENDIX STROMBERG CARBURETOR CO., SOUTH BEND, INDIANA. LOW… | ||
| scan0141 | Carburettor metering report graph showing fuel/air mixture ratio against airflow for an S.U. Carburetor. | ||
| View original record | EXPERIMENT ON S.U. Carburetor Full Throttle Closed Throttle LOW AIR FLOW CARBURETOR METERING REPORT SHEET NO. MIXTURE RATIO LB. FUEL PER LB. AIR AIR FLOW LB. PER MIN. Y-AXIS: .13, .12, .11, .10, .09,… | ||
| scan0142 | Carburettor metering report for a DX3 Special Stromberg Downdraft experiment. | ||
| View original record | EXPERIMENT ON DX3 Special. Stromberg. Downdraft CARBURETOR METERING REPORT SHEET NO. DATE MIXTURE RATIO LB. FUEL PER LB. AIR AIR FLOW LB. PER MIN. LOW AIR FLOW W.o.T C.T. VENTURI SMALL VENTURI LARGE… | ||
| scan0143 | Performance comparison graph for Stromberg DX-2 and Solex carburetors on a 65 x 90 6-cylinder engine. | ||
| View original record | mpansoi2 65 x 90. 6 cyl. STROMBERG DX-2 SOLEX B.H.P. 40 30 20 10 0 R.P.M. 0 400 800 1200 1600 2000 2400 2800 3200 3600 4000 PINTS/BHP/HR. 1.0 .9 .8 .7 | ||
| scan0144 | Performance graph comparing Stromberg JX4 and Zenith Down Draught carburettors on a 6 cylinder 80 x 120 engine. | ||
| View original record | 6 cyl. 80 x 120. STROMBERG JX4 Zenith Down Draught. BHP. RPM. Pints/BHP/Hr | ||
| scan0145 | Performance comparison graph between Stromberg UB-1 and Solex 35.V carburetors on a 6 cylinder 80 x 120 engine. | ||
| View original record | 6 Cyl. 80 x 120. B.H.P. STROMBERG UB-1 SOLEX 35.V. R.P.M. Pints / B.H.P. / HR. | ||
| scan0146 | Graph comparing BHP vs RPM for a 4-cylinder 83x95 engine with two different carburettor setups. | ||
| View original record | 4 cyl. b3x95. 2 S.U. CARBURETORS. 1 STROMBERG DX-2. BHP R.P.M. | ||
| scan0147 | Letter from Bendix-Perrot Brakes Ltd. concerning a sample automatic choke control. | ||
| View original record | Form No. 1. 84660. BENDIX-PERROT BRAKES LTD. MECHANICAL BRAKES for AUTOMOTIVE VEHICLES CABLES & TELEGRAMS: "BENDIXCORP, BIRMINGHAM" TELEPHONES: ACOCKS GREEN, 1601-2-3-4. Kings Road TYSELEY BIRMINGHAM,… | ||
| scan0148 | Letter to Bendix-Perrot Brakes Ltd. regarding the use of an automatic choke control. | ||
| View original record | 84660. Expl. Dept. Hs.5/MJ. 14th. February 1933. Messrs. Bendix-Perrot Brakes Ltd., Kings Road, Tyseley, BIRMINGHAM,11. For the attention of Mr. E.W.Knott. Dear Sir, Replying to your letter of… | ||
| scan0149 | Letter from Bendix-Perrot Brakes Ltd. acknowledging Rolls-Royce's letter regarding the Bendix automatic choke control. | ||
| View original record | Form No. 1. X4660 BENDIX-PERROT BRAKES LTD. MECHANICAL BRAKES for AUTOMOTIVE VEHICLES CABLES & TELEGRAMS: "BENDIXCORP-BIRMINGHAM" TELEPHONES: ACOCKS GREEN, 1601-2-3-4. Kings Road TYSELEY BIRMINGHAM,… | ||
| scan0150 | Letter to Stromberg Motor Devices Ltd. requesting information on suppliers of bi-metal thermostats for automatic starting chokes. | ||
| View original record | X4660 Exptl. Dept. Hs/Rm.3/KW. 7th May, 1934. Stromberg Motor Devices Ltd. Milman's Street & Cheyne Walk, Chelsea, London, S.W.10. Dear Sirs, We wonder whether you can give us any information as to… | ||
| scan0151 | Letter from The Zenith Carburetter Co. Ltd proposing to test their latest downdraught carburetter. | ||
| View original record | The ZENITH CARBURETTER·CO·LTD 40 - 44 NEWMAN STREET LONDON W CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY. TELEGRAMS: ZENICARBUR, PHONE, LONDON. CODE A.B.C 5TH EDITION. ALSO… | ||
| scan0152 | Letter from The Zenith Carburetter Co Ltd proposing tests of their latest 'V' type carburetter. | ||
| View original record | X1053 The ZENITH CARBURETTER·CO·LTD CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY. TELEGRAMS: ZENICARBUR, PHONE, LONDON. CODE: A.B.C. 5TH EDITION. 40 - 44 NEWMAN STREET… | ||
| scan0153 | Concluding page of a letter from The Zenith Carburetter Co. Ltd. | ||
| View original record | THE ZENITH CARBURETTER CO. Limited. Sheet No.....2..... Messrs. Rolls Royce Ltd. 3rd July 1934 We sincerely hope to hear that we shall be given this opportunity, and thanking you in anticipation, We… | ||
| scan0154 | Letter from Zenith Carburetter Co. regarding the supply of downdraught carburettors for a 3 1/2 litre engine. | ||
| View original record | The ZENITH CARBURETTER CO LTD 40 - 44 NEWMAN STREET LONDON W CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY. TELEGRAMS: ZENICARBUR, PHONE, LONDON. CODE: A.B.C. 5TH EDITION. ALSO… | ||
| scan0155 | Letter to Zenith Carburetter Co. Ltd. acknowledging the receipt of two downdraught carburetters for testing. | ||
| View original record | X105 3 Exptl. Dept. 19th January, 1935. Hs/Smth.12/KW. The Zenith Carburetter Co.Ltd., 40-44, Newman Street, London, W.1. Your Ref: TLT/MB. Dear Sirs, We beg to thank you for your letter of the 16th… | ||
| scan0156 | Letter from Zenith Carburetter Co. Ltd regarding downdraught carburetters, enclosing a catalogue and drawings. | ||
| View original record | X1053 The ZENITH CARBURETTER CO. LTD 40 - 44 NEWMAN STREET LONDON.W CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY. TELEGRAMS: ZENICARBUR, PHONE, LONDON. CODE: A. B. C. 5TH… | ||
| scan0157 | Inquiry to Bendix Ltd. regarding the manufacture of Stromberg carburetters in England. | ||
| View original record | X 4660 Exptl. Dept. Hs/Rn.3/KW. 18th February, 1935. Messrs. Bendix Ltd., Tyseley, Birmingham. Dear Sirs, We are interested to know the position with regard to the manufacture of Stromberg Car… | ||
| scan0158 | Letter to Bendix Ltd. reporting test results for a 42 m.m. Downdraught Carburetter and requesting a larger choke model. | ||
| View original record | +4660 Exptl. Dept. Hs/Smth.15/KW. 23rd February, 1935. Messrs. Bendix Ltd., Tyseley, Birmingham. Dear Sirs, Bendix Stromberg Carburetter. We have now tested the 42 m.m. Downdraught Carburetter which… | ||
| scan0159 | Letter from Bendix concerning a new carburetter on test and an alternative smaller venturi tube being sent. | ||
| View original record | 44660 CABLES & TELEGRAMS: BENDIXCORP, BIRMINGHAM BENDIX LIMITED DIRECTORS: J.A.THOMSON A.B.WARING F.A.STANTON. U.S.A. TYSELEY, BIRMINGHAM TELEPHONE: ACOCKS GREEN 1601-2-3-4 Your ref: Hs/Smth.15/KW… | ||
| scan0160 | Letter from General Motors Export Company confirming the dispatch of a Stromberg Carburetor and other requested parts. | ||
| View original record | x4660 GENERAL MOTORS EXPORT COMPANY GENERAL MOTORS BUILDING BROADWAY AT 57TH STREET NEW YORK, N.Y. CABLE ADDRESS "AUTOEXPORT" N. Y." ALL CODES USED March 1, 1935 Mr. W. A. Robotham Rolls-Royce Ltd.… | ||
| scan0161 | Letter from Bendix regarding the D.A.42 carburetter, its performance curves, and alternative metering jets. | ||
| View original record | Lt. Smith CABLES & TELEGRAMS: BENDIXCORP, BIRMINGHAM BENDIX LIMITED DIRECTORS: J.A.THOMSON A.B.WARING F.A.STANTON. U.S.A. TYSELEY, BIRMINGHAM TELEPHONE: ACOCKS GREEN 1601-2-3-4 March 1st 1935 HS… | ||
| scan0162 | Letter to Bendix Ltd. acknowledging receipt of a D.A.42 carburetter and requesting details for the automatic starter control. | ||
| View original record | x4660 Exptl. Dept. Hs/Smth.14/KW. 5th March, 1935. Messrs. Bendix Ltd., Tyseley, Birmingham. Your Ref: CHLW/CH. Dear Sirs, We beg to thank you for your letter of the 1st inst. and for the D.A.42… | ||
| scan0163 | Letter from Bendix discussing the fitting of an Automatic Choke Control for a D.A.42 carburetter. | ||
| View original record | x4660 CABLES & TELEGRAMS: BENDIXCORP, BIRMINGHAM BENDIX LIMITED DIRECTORS: J.A. THOMSON A.B. WARING F.A. STANTON. U.S.A. TYSELEY, BIRMINGHAM TELEPHONE: ACOCKS GREEN 1601-2-3-4 Your ref: Hs/Smith.14/KW… | ||
| scan0164 | Requesting instructions regarding two invoices for carburetter jets from the Zenith Carburetter Co. Ltd. | ||
| View original record | Roy. G/Cam/CA.18/DN. 27.2.35. Further to our memo. of the 7th. inst. reference G/Cam/CA.15/DW wherein we gave you details of an invoice from the Zenith Carburetter Co. Ltd., dated the 2nd. inst. for… | ||
| scan0165 | Official order be placed with The Zenith Carburetter Co. for jets. | ||
| View original record | To Roy. c. to G/Cam. X 1053 Hs/Rm.1/KW.1.3.35. With reference to G/Cam/CA.18/DN.27.2.35, will you please pass an official order to The Zenith Carburetter Co. for these Jets. Hs/Rm. | ||
| scan0166 | Invoice from Bendix Ltd for various carburettor parts. | ||
| View original record | Hs. c. to Roy. Rmy G/Cam/CA.10/DN.8.3.35. We have received an invoice from Bendix Ltd., dated the 22nd. February 1935, details of which are shown below. If these parts may be paid for will you please… | ||
| scan0167 | Authorising payment of a Bendix invoice for carburetter parts. | ||
| View original record | To G/Cam. c. to Roy. +4660 HS/Rm.6/KW.11.3.35. Replying to G/Cam/CA.10/DN.8.3.35. concerning Messrs. Bendix's invoice for carburetter parts, kindly note this account may be paid. HS/Rm. | ||
| scan0168 | Requesting payment for invoices from Bendix Ltd. for carburetor parts. | ||
| View original record | Rm Hs. c. to Roy. G/Cam/CA.14/DN. 11.3.35. Further to our memo. of the 8th. inst. reference G/Cam/CA.10/DN. giving you details of an invoice received from Bendix, Ltd., dated the 22nd. February,… | ||
| scan0169 | The despatch of carburetter parts to Bendix Ltd. | ||
| View original record | 74660 To RHC. Hs/Smth.25/KW.14.3.35. Bendix-Stromberg Carburetter. Will you please despatch to Bendix Ltd., Tyseley, Birmingham, the following goods :- 1. DA.42 Carburetter. 1. L.864 Venturi built… | ||
| scan0170 | Letter to Bendix Ltd. regarding the return of a carburetter and associated parts. | ||
| View original record | Exptl. Dept. HS/Smth.24/KW. 14th March, 1935. Messrs. Bendix Ltd., Tyseley, Birmingham. Dear Sirs, We are despatching to you to-day the following goods :- 1. DA.42 Carburetter. 1. L.864 Venturi built… | ||
| scan0171 | Incorrect invoice payment for a Bendix-Stromberg Carburetter. | ||
| View original record | To G/Cam. c. to Roy. Hs/Smth.26/KW.14.3.35. Bendix-Stromberg Carburetter. Re G/Cam/CA.1C/DN.8.3.35. G/Cam/CA.14/DN.11.3.35. In our memo. Hs/Rm.6/KW.11.3.35 we instructed that the invoice dated Feb.… | ||
| scan0172 | Letter to The Zenith Carburetter Co. Ltd. regarding the return of a carburetter and spare chokes found to be too small. | ||
| View original record | X1053 Exptl. Dept. Hs/Smth.11/KW. 27th March, 1935. The Zenith Carburetter Co.Ltd., 40-44, Newman Street, LONDON, W.1. Your Ref: TK/GKT. Dear Sirs, We thank you for yours of the 25th inst. enclosing… | ||
| scan0173 | Letter to The Zenith Carburetter Co. Ltd. regarding the testing of two downdraught carburetters. | ||
| View original record | X105 3 Exptl. Dept. Hs/Smth7/KW. 23rd March, 1935. The Zenith Carburetter Co.Ltd., 40-44, Newman Street, London, W.1. Your Ref: TLT/MB. Dear Sirs, Downdraught Carburetters. Regarding the two… | ||
| scan0174 | Letter from Zenith Carburetter Co. Ltd. regarding Downdraft carburettors and a pro forma invoice. | ||
| View original record | COPY. THE ZENITH CARBURETTER CO. LTD. 40 - 44 Newman St., London W.1 Messrs. Rolls-Royce Ltd. DERBY. 25th March 1935. Your reference: Hs/Smth 7/KW Dear Sirs, We are much obliged for yours of the 23rd… | ||
| scan0175 | Pro forma invoice for carburettor parts from The Zenith Carburetter Co. Ltd. | ||
| View original record | COPY. PRO FORMA ZENITH. 42 - 44 Newman St. London W.1 25.3.35. Messrs. Rolls-Royce Ltd., DERBY. Order No. NS.40004 Customers No. Expt.Dept. Date. L.23/3/35 To THE ZENITH CARBURETTER CO. LTD. Hs/Smth… | ||
| scan0176 | Pro forma invoice for carburettor components from Zenith Carburetter Co. Ltd. | ||
| View original record | COPY. PRO FORMA ZENITH. 42 - 44 Newman St. London W.1 25.3.35. Messrs. Rolls-Royce Ltd., DERBY. Order No. NS.40005 Customers No. Exptl.Dept. Date. Hs/Smth/KW L23/3/35 To THE ZENITH CARBURETTER CO.… | ||
| scan0177 | Return of Zenith carburetters and choke tubes received on a sale or return basis. | ||
| View original record | To RHC/CEP. X1053 Hs/Smth.12/KW.27.3.35. Zenith Carburetters. Attached is a letter and invoice we have received from Zeniths, covering two carburetters and spares which were sent to us on sale or… | ||
| scan0178 | Letter from the Zenith Carburetter Co. Ltd. concerning the supply of a specially extended choke tube fixing screw and a drill. | ||
| View original record | The x1037 THE ZENITH CARBURETTER·CO·LTD 40 - 44 NEWMAN STREET LONDON·W· CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY. TELEGRAMS: ZENICARBUR, PHONE, LONDON. CODE: A B C 5th… | ||
| scan0179 | Outline drawing of the Stromberg carburetter for the Kestrel engine. | ||
| View original record | To E/Psn. X4660 Hs/Rm.1/KW.9.4.35. Herewith outline drawing of the Stromberg Carburetter which we are using, which we think will be the right size for one bank of the Kestrel engine. Hs/Rm. | ||
| scan0180 | Letter from Bendix Ltd regarding the acquisition of Stromberg carburetter rights by Zenith Carburetter Company. | ||
| View original record | CABLES & TELEGRAMS: BENDIXCORP, BIRMINGHAM BENDIX LIMITED DIRECTORS: J.A.THOMSON A.B.WARING F.A.STANTON, U.S.A. TYSELEY, BIRMINGHAM TELEPHONE: ACOCKS GREEN 1601-2-3-4 April 30th 1935. W.A. Robotham,… | ||
| scan0181 | Letter to H. Clark of Bendix Limited concerning business related to Stromberg Carburetters. | ||
| View original record | X1033 Exptl. Dept. Hs/Rm.17/KW. 1st May, 1935. H. Clark Esq., Messrs. Bendix Limited, Tyseley, Birmingham. Dear Clark, Thank you for your note re Stromberg Carburetters. I am sorry that you are having… | ||
| scan0182 | Thank you letter from Herbert Clark of Bendix Limited to W.A. Robotham. | ||
| View original record | X1033 CABLES & TELEGRAMS: BENDIXCORP, BIRMINGHAM BENDIX LIMITED DIRECTORS: J.A.THOMSON A.B.WARING F.A.STANTON, U.S.A. TYSELEY, BIRMINGHAM TELEPHONE: ACOCKS GREEN 1601-2-3-4 May 4th 1935. W.A.… | ||
| scan0183 | Report comparing an American Downdraught Stromberg Carburetter to the English production model. | ||
| View original record | To Hs/Rm. c. to Hs/CTS. X1033 Hs/GR.14/KW.16.5.35. 18-G-IV. Downdraught Stromberg Carburetter with Central Water-Heated Floor Manifold. This carburetter was found to be the American model and differs… | ||
| scan0184 | Request to order a Bendix Stromberg Carburetter from the Bendix Co. | ||
| View original record | X1033 To Roy. Hs/Rm.8/KW.16.5.35. Will you please order from the Bendix Co., King's Road, Tyseley, Birmingham - 1. Bendix Stromberg Carburetter, type DA.42, with choke 1.5/16" dia, and range of bypass… | ||
| scan0185 | Test report on a Downdraught Stromberg Carburetter with a Central Heated Small Capacity Manifold, noting poor performance at low speeds. | ||
| View original record | To Hs/Rm. c. to Hs/CTS. K1033 Hs/GR.10/KW.27.5.35. 18-G-IV. Downdraught Stromberg Carburetter with Central Heated Small Capacity Manifold. This manifold was found to be worse than the large capacity… | ||
| scan0186 | Test report on a Downdraught Stromberg Carburetter and manifold, detailing faults with fuel loading and low-speed acceleration. | ||
| View original record | To Hs/Rm. c. to Hs/CTS. X033 Hs/GR.9/KW.27.5.35. 18-C-IV. Downdraught Stromberg Carburetter with Central Water Heated Floor Manifold. Further tests carried out show the main fault with this manifold… | ||
| scan0187 | Recommendation to reduce the choke diameter on an American carburetor to resolve a fault. | ||
| View original record | -2- HS/GR.9/KW.27.5.35. Owing to the fact that this American carb. has an integral cast choke of 1.5/16" dia., it was found impossible to reduce. By reducing the choke diameter, this fault would… | ||
| scan0188 | Letter arranging a visit to discuss the tuning of a 48 VI-2 Zenith Carburetter. | ||
| View original record | The ZENITH CARBURETTER CO LTD [Left Side] THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS LTD Logo CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY. TELEGRAMS: ZENICARBUR, PHONE,… | ||
| scan0189 | Specification and test report for a Zenith Carburetter, Type 48VI-2. | ||
| View original record | To Hs/Rm. c.c. to Hs/CTB. X1034 Hs/GR.7/KW.5.6.35. 18-G-IV. Zenith Carburetter; Type 48VI-2. Specification as received from test bed :- Choke 36 Main Jet 165 Comp.jet 150 Slow running 70 Cap. tube No.… | ||
| scan0190 | Letter from The Zenith Carburetter Co Ltd regarding carburetter flow rates with gravity tanks versus mechanical pumps. | ||
| View original record | The ZENITH CARBURETTER·CO·LTD CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY. TELEGRAMS: ZENICARBUR, PHONE, LONDON. CODE: A.B.C. 5TH EDITION. 40 - 44 NEWMAN STREET LONDON·W ALSO… | ||
| scan0191 | Letter from Zenith Carburetter Co. regarding modifications to carburetter seating, fuel levels, and materials. | ||
| View original record | THE ZENITH CARBURETTER CO. Limited. Sheet No......... 2. ... fit a 3m/m seating instead of a 2m/m seating, (See table). Our standard level under a head of 4'-6" when a 2.5m/m seating is fitted is… | ||
| scan0192 | Table from the Zenith Carburetter Co. showing the flow of petrol in pints per hour against head on seating. | ||
| View original record | THE ZENITH CARBURETTER CO. Sheet No.........3.T.. Limited. Table Showing Flow Of Petrol In Pints Per Hour Against Head on Seating. ------------------------------------------ | | Head in Feet. |… | ||
| scan0193 | The performance and faults of a Zenith 48V1-2 carburetter. | ||
| View original record | To Hs/Rm. c. to Hs/CTS. +1034 Hs/GR.15/KW.7.6.35. 18-G-IV. Zenith Carburetter, 48V1-2. Fitted to 18-G-IV with small capacity central water heated manifold and float chamber to the front of an engine.… | ||
| scan0194 | Letter to Zenith Carburetter Co. Ltd. regarding road test results for the Type 48V1-2 carburetter. | ||
| View original record | X1034 Exptl. Dept. Hs/GR.14/KW. 7th June, 1935. The Zenith Carburetter Co.Ltd., 40-44, Newman Street, London, W.1. For the attention of Messrs. Palmer & Howell. Dear Sirs, Re Carburetter Type 48V1-2.… | ||
| scan0195 | Engine cut-out issues when opening the throttle at low speed on a gradient. | ||
| View original record | -2- Hs/GR.14/KW.7.6.35. The worst condition is on a gradient at 4 m.p.h. snap opening to 1/3 throttle; engine cuts out dead. As regards (2), this would be greatly improved with more economic setting… | ||
| scan0196 | Letter from Zenith Carburetter Co Ltd regarding trials and adjustments for the Type 48 VI-2 carburetter. | ||
| View original record | X 1034 The ZENITH CARBURETTER CO LTD THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY. TELEGRAMS: ZENICARBUR, PHONE, LONDON. CODE: A.… | ||
| scan0197 | Letter from The Zenith Carburetter Co. discussing maximum fuel pump pressure and seating requirements. | ||
| View original record | THE ZENITH CARBURETTER CO. Limited. Sheet No. 2. June 11th. 1935. We note that the maximum pressure from the Fuel Pump is 2 lb. per square inch, and from the information given in your letter it would… | ||
| scan0198 | Letter from Zenith Carburetter Co. Ltd regarding performance improvements of the Type 48 VI-2 carburetter. | ||
| View original record | The ZENITH CARBURETTER CO LTD 40 - 44 NEWMAN STREET LONDON. W CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY. TELEGRAMS: ZENICARBUR, PHONE, LONDON. CODE A B C 5TH EDITION. ALSO… | ||
| scan0199 | Letter from Zenith Carburetter Co. regarding carburetter setup, fuel consumption, and economy jets for a 25 HP engine. | ||
| View original record | THE ZENITH CARBURETTER CO. Limited. Sheet No............ 2. We understand that the pump fitted to the 25 HP engine delivers fuel at from 1.5 to 2 lbs. per square inch, and it would appear that a 2.5,… | ||
| scan0200 | Letter from The Zenith Carburetter Co. regarding induction pipe design, suggesting a saddle type jacket and a 'hot spot'. | ||
| View original record | THE ZENITH CARBURETTER CO. Limited. Sheet No....3... ... pipe as possible by dispensing with any vertical riser, and by keeping the induction pipe of constant diameter throughout the whole of its… | ||
| scan0201 | Hand-drawn sketch of a carburetter component with a design instruction. | ||
| View original record | THE ZENITH CARBURETTER CO. Limited. Sheet No............ A. should be as thin as possible | ||
| scan0202 | Letter to the Zenith Carburetter Co. Ltd. discussing issues with a downdraught carburettor and proposing two alternative cures. | ||
| View original record | K1034 Exptl. Dept. HS/CTS.1/KW. 13th June, 1935. Research Dept., The Zenith Carburetter Co.Ltd., 40-44, Newman St., LONDON, W.1. Dear Mr. Palmer, Very many thanks for your interesting letter of the… | ||
| scan0203 | Invoice from The Zenith Carburetter Co. Ltd. for needles, seatings, and economy jets. | ||
| View original record | X1034 HS. Salt HS. G/Cam/CA.38/IL.17.6.35. We have received an invoice from The Zenith Carburetter Co.Ltd. dated 12th inst., on which we are charged 5/-d. each less 40% for 2 Needles and Seatings and… | ||
| scan0204 | Letter from Zenith Carburetter Co. Ltd discussing two alternatives for carburetter progression. | ||
| View original record | The ZENITH CARBURETTER·CO·LTD 40 - 44 NEWMAN STREET LONDON. W CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY. TELEGRAMS: ZENICARBUR. PHONE, LONDON. CODE: A.B.C. 5TH EDITION.… | ||
| scan0205 | The second page of a letter from The Zenith Carburetter Co. Ltd. about supplying a carburetter. | ||
| View original record | THE ZENITH CARBURETTER CO. Limited. Sheet No. 2. ... thereafter leaving you to smooth up the job to your own particular requirements. Should you require another carburetter embodying what I have… | ||
| scan0206 | Official order be placed with the Zenith Carburetter Co. Ltd. for parts. | ||
| View original record | X1034 To Roy. c. to G/Cam. Hs/CTS.7/KW.19.6.35. Will you please pass an official order to the Zenith Carburetter Co.Ltd. for 2 Needles and Seatings, at 5/0d. each less 40% and 6 Economy Jets at 2/0d.… | ||
| scan0207 | Comparison of Zenith Carburetter Type 48VI-2 specifications for standard and supercharged applications. | ||
| View original record | X1034 To Hs/Rm. c. to Hs/CTS. Hs/GR.6/KW.19.6.35. Zenith Carburetter, Type 48VI-2. Specification as removed from 18-G-IV. Choke 36 m/m. Main Jet 165 Comp. Jet 150 Slow run. 70 Capacity Tube No.1.… | ||
| scan0208 | Modifications to a Stromberg automatic choke and fast idle device fitted to a downdraught carburetter. | ||
| View original record | To Hs/Rm. c. to Hs/CTS. X 1033 Hs/GR.14/KW. 26.6.35. 20-G-IV. Stromberg automatic choke and fast idle device fitted to Stromberg downdraught carburetter. Fast idling set to 15 m.p.h. approx. Suction… | ||
| scan0209 | Letter from Zenith Carburetter Co. regarding the progress and testing of a 48 VI carburetter. | ||
| View original record | The ZENITH CARBURETTER CO LTD 40 - 44 NEWMAN STREET LONDON W CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY. TELEGRAMS: ZENICARBUR, PHONE, LONDON. CODE A.B.C. 5TH EDITION. ALSO… | ||
| scan0210 | Page 2 of a letter from Zenith Carburetter Co. regarding diagnosing carburetter defects. | ||
| View original record | THE ZENITH CARBURETTER CO. Sheet No......... 2.. Limited. As we have pointed out in previous letters, we are of the opinion that the best place in which to tackle the progression period is on the road… | ||
| scan0211 | Letter to The Zenith Carburetter Co. Ltd. postponing work on a carburetter due to preparations for the Motor Show. | ||
| View original record | X1034 Exptl. Dept. Hs/CTS.15/KW. 2nd July, 1935. A.E. Palmer Esq., Research Dept., The Zenith Carburetter Co.Ltd., 40-44 Newman St., LONDON, W.1. Dear Mr. Palmer, With reference to yours of the 1st… | ||
| scan0212 | Order for a Bendix Stromberg carburetter and associated parts. | ||
| View original record | X1033 To Roy: Hs/CTS.28/KW.3.7.35. Will you please order from the Bendix Co., King's Road, Tyseley, Birmingham - 1. Bendix Stromberg Carburetter, type DA.42, with 1.5/16" choke and range of metering… | ||
| scan0213 | Performance data for a Zenith carburetter with a Graham supercharger. | ||
| View original record | To Hs/Smth. X 1034 Hs/GR.9/KW.5.7.35. 3-B-IV. Zenith Carburetter 48V1-2, Graham Supercharger. R.P.M. lbs/sq.in. 1000 0.5 2000 1.25 3000 2.75 3500 3.25 3780 3.75 4000 4.25 4250 4.75 4500 5.5… | ||
| scan0214 | Test report detailing settings for a 3-B-IV Supercharged Zenith 48V1-2 Carburetter. | ||
| View original record | To Hs/Rm. c. to Hs/CTS. 4034 Hs/GR.8/KW.5.7.35. 3-B-IV Supercharged Zenith Carburetter 48V1-2. Further tests carried out to improve carburation. The float chamber position was altered and fitted to… | ||
| scan0215 | Table of recorded blower pressures at various RPMs. | ||
| View original record | -2- Hs/GR. 8/KW. 5.7.35. Blower Pressures recorded :- R.P.M. lbs/sq.in. 1000 0.5 2000 1.25 3000 2.75 3500 3.25 3750 3.75 4000 4.25 4250 4.75 4500 5.5 Hs/G. Ratcliffe. | ||
| scan0216 | Letter from Zenith Carburetter Co. Ltd. discussing Stromberg carburetter models and manuals. | ||
| View original record | X1033 The ZENITH CARBURETTER CO LTD 40-44 NEWMAN STREET LONDON.W CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY. TELEGRAMS: ZENICARBUR. PHONE, LONDON. CODE: A.B.C. 5th EDITION.… | ||
| scan0217 | Letter from C.H. Fisher arranging a meeting in Derby. | ||
| View original record | -2- I was thinking of paying a call to Derby to discuss this and other matters with you, and I shall be glad if you will let me know whether it will be convenient for me to come up one day next week.… | ||
| scan0218 | Letter to the Zenith Carburetter Co. Ltd. regarding the testing of Stromberg carburetters on a car. | ||
| View original record | X1033 Exptl. Dept. Hs/Rm.12/KW. 13th July,1935. The Zenith Carburetter Co. Ltd., 40-44 Newman St., LONDON, W.1. Dear Sirs, Re Stromberg Carburetters. We are expecting to have one of our cars available… | ||
| scan0219 | Letter from Zenith Carburetter Co. Ltd. arranging for tests to be carried out in Derby. | ||
| View original record | X1033 The ZENITH CARBURETTER·CO·LTD 40 - 44 NEWMAN STREET LONDON·W CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY. TELEGRAMS: ZENICARBUR, PHONE, LONDON. CODE: A·B·C·5th EDITION.… | ||
| scan0220 | Letter to Stromberg Carburetter Co. Ltd. discussing ongoing carburetter experiments, requesting new hand-controlled choke versions, and asking for details on a larger model. | ||
| View original record | X1033 Exptl. Dept. Hs/Rm.S/KW. 6th August, 1935. C. Fisher, Esq., The Stromberg Carburetter Co.Ltd., Bendix Works, Tyseley, Birmingham. Dear Mr. Fisher, You will be pleased to hear that we are… | ||
| scan0221 | Carburettor testing and adjustments for a Stromberg DA-42 model. | ||
| View original record | To Hs/Rm. c. to Hs/CTS. L 1033 HS/GR.14/KW.6.8.35. Stromberg DA-42; 16-G-IV. The following tests were carried out on the above. The main metering jet was finally set at .064 and is at present fitted… | ||
| scan0222 | Recommendations and specifications for a carburetter, including insulating washer thickness. | ||
| View original record | -2- Hs/GR14/KW.6.8.35. The Stromberg representative recommends an insulating washer at the manifold flange of no less thickness than 0.75". Present specification of carburetter :- Seating 130 Choke 1… | ||
| scan0223 | Letter from Zenith Carburetter Co Ltd regarding carburetter tests, an order, and design revisions. | ||
| View original record | Part The ZENITH CARBURETTER CO LTD CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY. TELEGRAMS: ZENICARBUR. PHONE, LONDON CODE: A.B.C 5th EDITION. 40 - 44 NEWMAN STREET LONDON W… | ||
| scan0224 | Page 2 of a letter from Zenith Carburetter Co Ltd regarding the provision of a sample dual carburetter. | ||
| View original record | -2- I promised to send you, as you know we are in the midst of moving the entire organisation to London and I have been unable to obtain the sample dual carburetter I intended to send you. I am,… | ||
| scan0225 | Letter to The Zenith Carburetter Co. detailing carburetter modifications for the Phantom III following successful tests. | ||
| View original record | V1033 Exptl. Dept. Hs/Swdl.11/JH.9.4.36. 9th April 1936. The Zenith Carburetter Co., Honeypot Lane, Stanmore, Middlesex. For the attention of Mr. Fisher. Dear Mr. Fisher, Since your last visit to the… | ||
| scan0226 | Letter requesting the conversion of carburettors to underneath direct feed and the supply of modified needles. | ||
| View original record | -2- Hs/Swd1.11/JH.9.4.36. We are asking the production people to convert their carburetters to the underneath direct feed so that they will have no trouble due to starving. In conjunction with this we… | ||
| scan0227 | Blueprint drawing of a needle for a Stromberg carburetor. | ||
| View original record | Rm 108., END VIEW, .240 DIA, .100 DIA, .050 RAD, 60°, NEEDLE. STROMBERG CARB., 9-4-36, Oxelce | ||
| scan0228 | Modifications to the Phantom III Stromberg carburetter. | ||
| View original record | To Sft. c. to Mx. V 033 Hs/Bwdl.10/JH.9.4.36. Phantom III Stromberg Carburetter. The above carburetters which we are running on our experimental cars have had the floatchamber feed mofied by R.A.C. to… | ||
| scan0229 | Blueprint for a needle for a Stromberg carburetor. | ||
| View original record | RM 108., END VIEW, .240 DIA, .100 DIA, .050 RAD, 60°, NEEDLE. STROMBERG CARB., 9-4-36, Ocklee | ||
| scan0230 | Issues with American-bodied Stromberg Ph.III carburetters compared to English-made ones. | ||
| View original record | To Wor. From Hs/Rm. c.c. to E. c.c. to By. c.c. to Mx. c.c. to Roy. Hs/Rm.2/KW.9.4.36. Stromberg Carburetters - Ph.III. We should like to make it clear that our recent tests on the Ph.III have shown… | ||