Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Letter regarding Patent No.147,375 for a warning lamp for motor vehicles. | ||
| View original record | H.R. 935a (100 T.) (S.H. 798, 10-12-20) G. 2948 Hs. from Wd. 1921 X 3935 RECEIVED Wd2/NJ25.4.21. Warning Lamp for Motor Vehicles. Herewith a letter from Frederick Mountford, Fremo Works, Old Cross… | ||
| Scan002 | Expressing disinterest in a proposed warning lamp for motor vehicles. | ||
| View original record | X 3936 To Wd. from Hs. Hs8/LG28.4.21. WARNING LAMP FOR MOTOR VEHICLES. With reference to your Wd2/NJ25.4.21. and attached letter herewith from Ferdk. Mountford, Birmingham. We are not interested in… | ||
| Scan003 | Inquiry regarding the compatibility of fitting a Rolph Patent Automatic Traffic Warner to a chassis. | ||
| View original record | S/W. .EFC x3936 DH7/DP8.11.21. dictated 7.11.21. [STAMP: RECEIVED 8 NOV 1921] Re: Major Dunning. This gentleman has recently purchased a new car from us and is anxious if possible to have the attached… | ||
| Scan004 | Electrical requirements for a Rolph Patent Automatic Traffic Warner for Major Dunning. | ||
| View original record | X3935 W/S. DH. from EFC. RE ROLPH PATENT AUTOMATIC TRAFFIC WARNER FOR MAJOR DUNNING. Regarding your DH7/DP8.11.21, with the exception that this traffic warner would be electrically illuminated on our… | ||
| Scan005 | Leaflet for the Rolph Patent Automatic Traffic Warner, shown fitted to a Wolseley Chassis. | ||
| View original record | X919 - 3935 HS/W EFC UNIVERSAL PROTECTION IS ASSURED BY THE Rolph Patent Automatic Traffic Warner Patented in the United Kingdom and in Foreign Countries . . . All Designs Registered LN-4967 SLOW… | ||
| Scan006 | Descriptive leaflet for the Rolph Patent Automatic Traffic Warner, an automatic signalling device for cars. | ||
| View original record | ROLPH PATENT AUTOMATIC TRAFFIC WARNER. Description of the Rolph Patent Automatic Traffic Warner. THE Rolph Automatic Traffic Warner is a simple device which enables the driver of a car to signal… | ||
| Scan007 | Leaflet demonstrating the functions of the Rolph Patent Automatic Traffic Warner. | ||
| View original record | ROLPH PATENT AUTOMATIC TRAFFIC WARNER. Rolph's Automatic Traffic Warner illuminating Number Plate. Rolph's Automatic Traffic Warner signalling "SLOW" to vehicles following. Rolph's Automatic Traffic… | ||
| Scan008 | The operation and benefits of the Rolph Patent Automatic Traffic Warner system compared to hand signals. | ||
| View original record | ROLPH PATENT AUTOMATIC TRAFFIC WARNER. Description—continued. The diagram B shows the method of signalling by the human arm. The driver of vehicle No. 1 holds out a hand which may mean one of three… | ||
| Scan009 | Leaflet describing the 'Rolph Patent Automatic Traffic Warner' and other motoring accessories. | ||
| View original record | ROLPH PATENT AUTOMATIC TRAFFIC WARNER. Description—continued. It can clearly be seen from the diagram that the signals shown by the Rolph Automatic Traffic Warner are quite visible to the cars behind.… | ||
| Scan010 | On testing a turn warning apparatus, detailing issues with the steering mechanism and a metal switch ring. | ||
| View original record | X3986 To Ev. from Hs/Rm. Hs/Rm4/AD2.10.29. We have tested out the warning apparatus snowing right and left turns etc. One difficulty with this apparatus is, that as our steering wheel makes 2 1/2… | ||
| Scan011 | Letter from The Westinghouse Air Spring Co. proposing a trial of their new 'Highway' model air spring suspension. | ||
| View original record | H1000 The Westinghouse Air Spring Co. GENERAL OFFICES NEW HAVEN, CONN. NEW YORK PHILADELPHIA PITTSBURGH BOSTON ATLANTA SAN FRANCISCO CHICAGO DETROIT CLEVELAND LOS ANGELES New Haven, Connecticut April… | ||
| Scan012 | Page 2 of a letter from The Westinghouse Air Spring Co. regarding their front end suspension. | ||
| View original record | -2-. practical experience the wonderful results that are obtainable by Westinghouse front end suspension. Very truly yours, THE WESTINGHOUSE AIR SPRING CO. S. J. Swift Sales Engineer S.J.Swift:R | ||
| Scan013 | Paper on air-springs and the measurement of automobile riding-quality. | ||
| View original record | 44000 Air-Springs and the Measurement of Automobile Riding-Quality BY JOHN J. McELROY S.A.E. THE SOCIETY OF AUTOMOTIVE ENGINEERS, INC. 29 WEST THIRTY-NINTH STREET NEW YORK CITY | ||
| Scan014 | Paper on air-springs and the measurement of automobile riding-quality. | ||
| View original record | Reprinted from The JOURNAL of the SOCIETY of AUTOMOTIVE ENGINEERS for September, 1924. Air-Springs and the Measurement of Automobile Riding-Quality By JOHN J. McELROY¹ DETROIT SECTION PAPER… | ||
| Scan015 | Analysis of air-spring suspension systems, comparing their load-deflection characteristics and vibration damping effects against traditional steel springs. | ||
| View original record | 4 AIR-SPRINGS AND RIDING-QUALITY FIG. 2—CHARACTERISTIC LOAD-CURVE OF THE AIR-SPRING. The Lower Curve Is the Typical Compression Curve of an Air-Spring Alone; the Upper Curve Shows the Same Air-Spring… | ||
| Scan016 | Study on air-springs and riding quality, analyzing static friction and axle movements. | ||
| View original record | PAGE 6 AIR-SPRINGS AND RIDING-QUALITY cal friction of the moving element and that due to the lubricant used. It is not my intention to go into this particular phase of air-spring design, but simply to… | ||
| Scan017 | The analysis and testing of air-springs and their effect on riding quality and axle-movement. | ||
| View original record | PAGE 8 AIR-SPRINGS AND RIDING-QUALITY TABLE 1—VALUES OF INITIAL, OR MAXIMUM, AXLE-MOVEMENT Equipment | Normal Axle-Line | Total Axle Movement, In. --- | --- | --- | Compression Above, In. | Expansion… | ||
| Scan018 | Study on air-springs and vehicle riding-quality, detailing test results and measurement instrumentation. | ||
| View original record | 10 AIR-SPRINGS AND RIDING-QUALITY TABLE 3—RELATIVE REDUCTION OF AXLE-MOVEMENT Date of Tests, Sept. 28, 1923 Mason Laboratory Course, 5 Miles; Yale University Test Car, Lincoln Chassis, 1923 Design… | ||
| Scan019 | Vehicle ride quality, detailing a vibration recorder, its calibration, and comparative test results from various 1920-1924 car models. | ||
| View original record | PAGE 12 AIR-SPRINGS AND RIDING-QUALITY the number of vibrations in excess of a certain acceleration that the instrument is set for. As the tape may slip because it is friction-fed, a positive… | ||
| Scan020 | Vehicle roadability, test procedures, and the performance of air-springs and shock absorbers, with comparative data tables and diagrams. | ||
| View original record | 14 AIR-SPRINGS AND RIDING-QUALITY gether for a short space that a magnifying glass is required to count them, it will be appreciated why we feel the instrument is, for all practical purposes,… | ||
| Scan021 | Detailed explanation of the design, function, and manufacturing of air-spring suspension systems. | ||
| View original record | [PAGE 16] AIR-SPRINGS AND RIDING-QUALITY FIG. 23—INDICATOR-CARD MADE ON THE CONVENTIONAL CROSBY STEAM-ENGINE INDICATING DEVICE This Card Shows the Characteristic Pressure Increase as the Air-Spring is… | ||
| Scan022 | Technical discussion on the installation, service, and riding quality of air-springs. | ||
| View original record | Page 18 AIR-SPRINGS AND RIDING-QUALITY workmanship must be maintained throughout the course of manufacture. Each element that is to carry air pressure must be tested thoroughly to assure its being… | ||
| Scan023 | Vehicle air-springs and riding-quality, including a diagram of a vibration recorder. | ||
| View original record | 20 AIR-SPRINGS AND RIDING-QUALITY FIG. 29—SKETCH SHOWING THE METHOD EMPLOYED IN TESTING AND ADJUSTING THE VIBRATION RECORDER In Adjusting or Checking-Up the Instrument the Entire Mass Is Suspended on… | ||
| Scan024 | Trial of a Westinghouse auxiliary air spring device on a Phantom model. | ||
| View original record | To OY. From Hs/Rm. Y4000 Hs/Rnl/LG9.8.26. AIR SPRINGS. X8410 We received a letter from the Westinghouse Air Spring Co., dated 27th. April 1926, offering to fit a set of their auxiliary air spring… | ||
| Scan025 | Letter from Westinghouse regarding a trial of experimental Westinghouse Air Springs on a chassis. | ||
| View original record | INLAND TELEGRAMS: WESTINGHOUSE, KINCROSS, LONDON. CABLES: WESTINGHOUSE, LONDON. Handwritten: 9-30, 29/9/26, X4000 TELEPHONES: NORTH { 2404, 2405, 2415. { 2416, 2417, 2418. The WESTINGHOUSE BRAKE &… | ||
| Scan026 | Letter to Westinghouse Brake Co. Ltd. enquiring about fitting their air springs to a chassis. | ||
| View original record | X4000 Expl: Dept: Hs/RmS/LG. 29th. Sept. 1926 The Westinghouse Brake Co.Ltd., 82, York Rd., Kings Cross, London N.1. Dear Sirs, With reference to your letter of the 28th.inst. We should like to try a… | ||
| Scan027 | Letter from Westinghouse Brake & Saxby Signal Company requesting chassis drawings regarding Westinghouse Air Springs. | ||
| View original record | INLAND TELEGRAMS: WESTINGHOUSE, KINCROSS, LONDON. CABLES: WESTINGHOUSE, LONDON. TRADE W MARK X4000 TELEPHONES: NORTH { 2404, 2405, 2415, 2416, 2417, 2418. THE WESTINGHOUSE BRAKE & SAXBY SIGNAL COMPANY… | ||
| Scan028 | The supply and arrangement of auxiliary air springs to be used in conjunction with leaf springs. | ||
| View original record | Please supply Esqf. with a) Small general arrangement - Chassis b) General arrangement - front & rear springs shewing frame attachment, deflection, spring strength, etc These people are going to… | ||
| Scan029 | Letter to the Westinghouse Brake Co. Ltd. regarding drawings and testing of their Air Springs. | ||
| View original record | X 4000 Expl: Dept: Hs/Rm2/LG. 5th. Oct. 1926 The Westinghouse Brake Co.Ltd., 82, York Rd., Kings Cross, London N.1. Dear Sirs, Westinghouse Air Springs. With reference to your letter of the 30th.ult.… | ||
| Scan030 | Letter concerning a missing drawing, number E.73699, for Westinghouse Air Springs. | ||
| View original record | INLAND TELEGRAMS: WESTINGHOUSE, KINCROSS, LONDON. CABLES: WESTINGHOUSE, LONDON. TRADE MARK X4000 TELEPHONES: NORTH { 2404, 2405, 2415, 2416, 2417, 2418. The WESTINGHOUSE BRAKE & SAXBY SIGNAL COMPANY… | ||
| Scan031 | Letter to the Westinghouse Brake Co. Ltd. about despatched drawings, one of which was incomplete. | ||
| View original record | X4000 Expl: Dept: Hs/Rml/LG. 7th. Oct. 1926 The Westinghouse Brake Co.Ltd., 82, York Rd., King's Cross, London N.1. Dear Sirs, Referring to your letter of the 6th.inst. Three drawings were despatched… | ||
| Scan032 | Inter-office letter from the American branch to the English branch regarding communications with Westinghouse companies. | ||
| View original record | RRA 25 20m-7-26 54866 INTER-OFFICE CORRESPONDENCE X4000 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. POST Out RECEIVED ACR-2169 Oct. 8, 1926 Rolls-Royce, Ltd. Derby, England. Gentlemen: Referring… | ||
| Scan033 | Letter from Rolls Royce of America to Rolls Royce Ltd regarding correspondence with Westinghouse companies. | ||
| View original record | ACR-2169 Oct. 8, 1926 Rolls-Royce, Ltd. Derby, England. Gentlemen: Referring to your letter reference Hs/Rml/L09.8.26, after discussing with Mr. Olley, we have corresponded with the Westinghouse Air… | ||
| Scan034 | Letter from Rolls Royce of America to Derby regarding Westinghouse Brake & Saxby Signal Company. | ||
| View original record | ACR-2169 Oct. 8, 1926 Rolls-Royce, Ltd. Derby, England. Gentlemen: Referring to your letter reference Hs/Rml/ LG9.8.26, after discussing with Mr. Olley, we have corresponded with the Westinghouse Air… | ||
| Scan035 | Letter from Westinghouse concerning the installation of air springs, including a blueprint and a photograph. | ||
| View original record | INLAND TELEGRAMS: WESTINGHOUSE, KINCROSS, LONDON. CABLES: WESTINGHOUSE, LONDON. TRADE W MARK Y4000 TELEPHONES: NORTH { 2404, 2405, 2415. { 2416, 2417, 2418. The WESTINGHOUSE BRAKE & SAXBY SIGNAL… | ||
| Scan036 | Photograph of a roadster equipped with Westinghouse Air Springs. | ||
| View original record | X4000 1488 Equipped with Westinghouse Air Springs. | ||
| Scan037 | Photograph of a vintage sedan car, side profile. | ||
| View original record | Y4000 40/50 H.P. 'PHANTOM II' LIMOUSINE | ||
| Scan038 | Letter to The Westinghouse Brake Co. Ltd. discussing the experimental fitting of an air spring device and requesting modifications to the adaptors. | ||
| View original record | Y4000 Expl: Dept: Hs/Rn3/LG. 11th. Nov. 1926. The Westinghouse Brake Co.Ltd., 82, York Rd., Kings Cross, London N.1. Dear Sirs, With reference to your letter of the 10th.inst. Whilst the method of… | ||
| Scan039 | Letter from Westinghouse confirming a revised scheme that will not require cutting a car frame. | ||
| View original record | INLAND TELEGRAMS: WESTINGHOUSE, KINCROSS, LONDON. CABLES: WESTINGHOUSE, LONDON. TRADE MARK X4000 TELEPHONES: NORTH { 2404. 2405. 2415. 2416. 2417. 2418. The WESTINGHOUSE BRAKE & SAXBY SIGNAL COMPANY… | ||
| Scan040 | Letter from Westinghouse regarding a drawing for a chassis arrangement that avoids cutting the frame ends. | ||
| View original record | INLAND TELEGRAMS: WESTINGHOUSE, KINCROSS, LONDON. CABLES: WESTINGHOUSE, LONDON. TRADE MARK Y4000 TELEPHONES: NORTH { 2404, 2405, 2415, 2416, 2417, 2418. The WESTINGHOUSE BRAKE & SAXBY SIGNAL COMPANY… | ||
| Scan041 | Letter to The Westinghouse Brake Co. Ltd. regarding a scheme for fitting parts to a car. | ||
| View original record | Y4000 Hs/Am2/LG. Expl: Dept : 27th. Nov. 1926. The Westinghouse Brake Co.Ltd., 82, York Rd., Kings Cross, London N.1. Dear Sirs, With reference to your letter of the 26th.inst. and enclosed scheme. We… | ||
| Scan042 | Letter from the Westinghouse Brake & Saxby Signal Company acknowledging a letter and arranging for parts to be sent. | ||
| View original record | INLAND TELEGRAMS: WESTINGHOUSE, KINCROSS, LONDON. CABLES: WESTINGHOUSE, LONDON. TRADE (W) MARK TELEPHONES: NORTH { 2404, 2405, 2415, 2416, 2417, 2418. X4000 The WESTINGHOUSE BRAKE & SAXBY SIGNAL… | ||
| Scan043 | Letter from the Westinghouse Brake & Saxby Signal Company regarding the trial of 'Highway' model air springs. | ||
| View original record | INLAND TELEGRAMS: WESTINGHOUSE, KINCROSS, LONDON. CABLES: WESTINGHOUSE, LONDON. TRADE (W) MARK X14050 TELEPHONES: NORTH { 2404. 2405. 2415. 2416. 2417. 2418. The WESTINGHOUSE BRAKE & SAXBY SIGNAL… | ||
| Scan044 | Spring suspension characteristics and testing. | ||
| View original record | To OY. from Hs/Rm. +4000 Hs/RmS/LG7.2.27. X7410 X3900 RE. SPRING SUSPENSION. With reference to your letter of the 26th.ult. (a) We were very interested in your remarks on suspension, particularly with… | ||
| Scan045 | Requesting an examination of the O'Neil Air Springs device. | ||
| View original record | S/W. Hs. X4000 CWB4/GM/5-3-27. O'NEIL AIR SPRINGS. The above device was brought to our notice by Messrs. Barker & Co., with whom the patentee was in touch and as you will see, Messrs. Barker have now… | ||
| Scan046 | Returning the specification for the O'Neill Air Spring with an opinion on its merits. | ||
| View original record | W/S. To CWB. from Hs/Rm. X 4000 Hs/Rml/T8.3.27. We are returning to you Specification of the O'Neill Air Spring, together with our opinion as to its merits. You will appreciate that we are more or… | ||
| Scan047 | Comparing the O'Neill air suspension system with the Westinghouse and Lancia type suspensions. | ||
| View original record | With reference to the attached particulars of the O'Neill suspension. You will appreciate that our criticism is inevitably somewhat superficial as we have not the time to undertake a protracted… | ||
| Scan048 | Letter from Westinghouse Brake & Saxby Signal Co. Ltd. inquiring about the testing of previously supplied air springs. | ||
| View original record | INLAND TELEGRAMS: WESTINGHOUSE, KINCROSS, LONDON. CABLES: WESTINGHOUSE, LONDON. TRADE (W) MARK X4000 TELEPHONES: NORTH { 2404, 2405, 2415, 2416, 2417, 2418. The WESTINGHOUSE BRAKE & SAXBY SIGNAL… | ||
| Scan049 | Letter to The Westinghouse Brake Co. Ltd. regarding the testing of their air springs on a car. | ||
| View original record | X4000 Expl: Dept: Hs/Rml/LG. 7th. May 1927 The Westinghouse Brake Co.Ltd., 82, York Rd., Kings Cross, London N.1. Dear Sirs, With reference to your letter of the 5th.inst. We have only just had an… | ||
| Scan050 | Letter from Westinghouse Brake & Saxby Signal Company following up on loaned air springs for trial. | ||
| View original record | INLAND TELEGRAMS: WESTINGHOUSE, KINCROSS, LONDON. CABLES: WESTINGHOUSE, LONDON. TRADE (W) MARK TELEPHONES: NORTH { 2404, 2405, 2415, 2416, 2417, 2418. The WESTINGHOUSE BRAKE & SAXBY SIGNAL COMPANY… | ||
| Scan051 | Letter to The Westinghouse Brake Co. regarding a delay in testing air springs due to other urgent work. | ||
| View original record | Expl: Dept: +4000 HS/Rml/LG. 4th. Jan. 1928. Messrs. The Westinghouse Brake Co., 82, York Rd., Kings Cross., London N.1. Dear Sirs, With reference to your letter of the 3rd. inst. We regret that we… | ||
| Scan052 | Follow-up letter from Westinghouse Brake & Saxby Signal Company regarding feedback on a set of Air Springs. | ||
| View original record | INLAND TELEGRAMS: WESTINGHOUSE, KINCROSS, LONDON. CABLES: WESTINGHOUSE, LONDON. TRADE MARK X/4000 TELEPHONES: NORTH { 2404, 2405, 2415, 2416, 2417, 2418. The WESTINGHOUSE BRAKE & SAXBY SIGNAL COMPANY… | ||
| Scan053 | Letter to The Westinghouse Brake Co. Ltd. regarding the status of testing their Air Springs. | ||
| View original record | X4000 HS/Rm2/LG. Exptl: Dept: 14th. Aug. 1923. Messrs. The Westinghouse Brake Co.Ltd., 82, York Rd., King's Cross, London N.1. Dear Sirs, With reference to your letter of the 1st. inst. we beg to say… | ||
| Scan054 | Follow-up letter from a supplier requesting permission to invoice for air springs. | ||
| View original record | INLAND TELEGRAMS: WESTINGHOUSE, KINCROSS, LONDON. CABLES: WESTINGHOUSE, LONDON. TELEPHONES: NORTH { 2404, 2405, 2415. { 2416, 2417, 2418. THE WESTINGHOUSE BRAKE & SAXBY SIGNAL COMPANY Limited.… | ||
| Scan055 | Returning two loaned air springs to The Westinghouse Brake Co. | ||
| View original record | To BP. from Hs/Rn. c. to Mt. Stores. X4000 Hs/Rm8/LG20.8.28. We are sending into the Stores for despatch to Messrs. The Westinghouse Brake Co., 82, York Rd., Kings Cross, London N.1. :- 2 Air Springs.… | ||
| Scan056 | Letter regarding the dispatch of two unused Air Springs to The Westinghouse Brake Co. | ||
| View original record | 4000 Hs/Ra6/LG. Expl: Dept: 20th. Aug. 1923 Messrs. The Westinghouse Brake Co., 82, York Rd., King's Cross, London N.1. Dear Sirs, We are sending the two Air Springs to you under separate cover. These… | ||
| Scan057 | Blueprint detailing a 3-inch air spring installation for a Phantom model, showing modifications to the frame end. | ||
| View original record | ITEM NO, NO. REQ'D, NAME, DWG. NO., PATT. NO., MTL., REMARKS 2, 3" D.A. HIGHWAY AIR SPRINGS, 7963 1, FRONT BRACKET R. HAND, 2241, 2241 RH 1, " L. HAND, ", 2241 LH ONE SET, REAR CONNECTORS COMP., HC-45… | ||
| Scan058 | Proposed alterations to cam forms and valve timing for Scheme 723. | ||
| View original record | To BY. from E. c. to BJ. R. c. to RG. Hs. X4003 E2/M21.7.26. F.10. CAM FORMS. X.4003 RE. SCHEME 723. X.3822 X.1770 In confirmation of R's verbal instructions during visit of Hs. and BY. yesterday, new… | ||
| Scan059 | Mr. Royce's remarks on temporary modifications to the Falcon 10 engine's cam forms. | ||
| View original record | X. 4003 To BY. from E. c. to BJ. RG. Hs. E1/M22.7.26. FALCON 10. CAM FORMS Further to our memo. E1/M21.7.26., would you kindly note Mr. Royce remarks as follows :- "Temporarily the present master cams… | ||
| Scan060 | Proposal to produce a new set of camshafts for experimentation. | ||
| View original record | To RHC. c. to Hs. c. to Hs. c. to BY/EL. X4003 BY/Cghl/DB.23.7.26. Re R.R. F.X. - Camshafts. Sec:4170. With reference to Mr Royce's proposal that we should try new camshafts, with cams arranged for… | ||
| Scan061 | Valve timing diagrams for the Falcon X engine with different clearances. | ||
| View original record | 23/7/26 [Top Diagram] I.O. 20° E.C. 16° 264 Ex 248 In I.C. 48° E.O. 68° WITH .010 CLEARANCE [Bottom Diagram] I.O. 12° E.C. 8° I.C. 40° E.O. 60° WITH .013 CLEARANCE THE ABOVE ARE CRANKSHAFT ANGLES… | ||
| Scan062 | Comparing valve open diagrams of the Curtiss and F.10 engines, discussing high-lift and exhaust cams. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to RG. E. c. to BY. X4003 X3366 X3822 Hs7/LG12. 8. 26. Attached herewith are valve open diagrams of the Curtiss engine compared with the F.10. The F.10 cams are the… | ||
| Scan063 | Valve lift diagram for the Curtiss D12 engine number 252. | ||
| View original record | CURTISS D12 ENGINE N° 252. VALVE LIFT DIAGRAM VALVE LIFT CRANKSHAFT DEGREES T.D.C. B.D.C. EXHAUST INLET E.O. 52° I.C. 34° I.O. 3° E.C. 2° .015" TAPPET CLEARANCE | ||
| Scan064 | The reverse of a document page featuring a 'Print Room' stamp and a handwritten reference number and date. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM, 13 AUG 26 DERBY. H's 7/L6 12.8.26 | ||
| Scan065 | Graph comparing the inlet valve lift diagrams for the Falcon X and Curtiss D12 engines. | ||
| View original record | INLET VALVE LIFT DIAGRAMS No TAPPET CLEARANCE CURTISS D 12. ENGINE Nọ 252. FALCON X CURTISS D 12 VALVE LIFT. CRANKSHAFT DEGREES. | ||
| Scan066 | Blank logbook page with a small sketch, handwritten reference, and stamped date. | ||
| View original record | H6 7/LG 12.8.26 ROLLS-ROYCE, LIMITED PRINT ROOM, 13 AUG 26 DERBY. | ||
| Scan067 | Diagram comparing the exhaust valve lift of the Falcon X and Curtiss D12 engines. | ||
| View original record | EXHAUST VALVE LIFT DIAGRAM NO TAPPET CLEARANCE CURTISS D12. ENGINE No 252 FALCON X CURTISS D 12. VALVE LIFT CRANKSHAFT DEGREES | ||
| Scan068 | Instruction to change the material of camshaft bearings from Phosphor Bronze to Aluminium. | ||
| View original record | By. Hs. RUG. X.4003 [STAMP: RECEIVED ... AUG 1926] Rg/SFP1/W25.8.26 ROLLS-ROYCE F.X. Camshaft & Rocker Mechanism. Will you please instruct the material of the camshaft bearings, E.27902, E.27911, and… | ||
| Scan069 | Modifications to the rocker mechanism to accommodate triple valve springs. | ||
| View original record | To BY. from E. c. to BJ. RG. Hs. +4003 E1/M28.8.26. F.10. MODIFICATION TO ROCKER MECHANISM. X.3822 X.4003 We send herewith LeC.2282 shewing the slight modifications necessary to accommodate 1.4" dia.… | ||
| Scan070 | Strengthening the F.10 inlet rocker and proposing a comparative test against the old design. | ||
| View original record | To BY. from R. c. to BJ. c. to RG. c. to HS. X.4003 R2/M16.9.26. F.10 INLET ROCKER. Attached is drg. LeC.2293, shewing the above. We have added enormously to the strength of the inlet rocker without… | ||
| Scan071 | The preparation of a 3-F-X engine with low compression for camshaft and valve comparison tests. | ||
| View original record | B.R. 493 (40 H) (SL 42 12-7-23). J.H. D. K 4003 EXPERIMENTAL REPORT. COPIES TO: (RG) BJ WOR By (E) FHS(crossed out) (RG) Expl. No. X2917 REF. HS3/LG2.10.26 OBJECT OF TEST. Preparation of 3-F-X (low… | ||
| Scan072 | The preparation of a 3-F-X low compression engine for camshaft and valve comparison tests. | ||
| View original record | B.R. 493 (40 H) (SL 42 12-7-23). J.H., D. 4003 EXPERIMENTAL REPORT. 4.10.26 COPIES TO: R.CJ. (BJ) WOR (By) E. Da. EP. PN. OY. RS Expl. No. 29172 REF. Hs2/LGS.10.26. OBJECT OF TEST. Preparation of… | ||
| Scan073 | Preliminary runs for camshaft and valve comparisons on a Falcon X low compression engine, noting issues with high oil consumption and bearing leaks. | ||
| View original record | X4003 EXPERIMENTAL REPORT. 5.10.26. COPIES TO: R.Ed. BJ WOR By. E. Da. EP. PN. OY. RG Expl. No. 4003 T417a REF. Hs/FCW1/T6.10.26. OBJECT OF TEST. Preparation and preliminary runs for camshaft and… | ||
| Scan074 | The despatch of a camshaft drive off an F.X. for examination. | ||
| View original record | X4003 To BP. from Hs/Rn. c. to Mt. Hs/Rn4/LG12.10.26. We are sending into the Stores for despatch to Mr. Elliott at West Wittering :- 1 Camshaft drive off F.X. for examination - no charge. Please… | ||
| Scan075 | Camshaft drive failure and proposed modifications for the Falcon 10 and Condor engines. | ||
| View original record | To RG. from E. c. to BJ. HS. BY. X4003 E1/M14.10.26. FALCON 10. & CONDOR CAMSHAFT DRIVES. X.4003 X.4598 Referring to the camshaft drive which failed on F.10., this type of coupling in which a taper… | ||
| Scan076 | Sketch showing the fracture of a Falcon X lower camshaft drive housing. | ||
| View original record | X6003 See report HS/H/MT/16.11.26 X29174 FRACTURED ALONG HERE SKETCH SHEWING FRACTURE OF FALCON X LOWER CAMSHAFT DRIVE HOUSING. ROLLS-ROYCE LTD PRINT ROOM 17 NOV 1926 DERBY | ||
| Scan077 | Report of a strengthened inlet rocker failure, possibly caused by a broken inner valve spring. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to RG. E. c. to BY. X4003 Hs4/LG26.11.26. RR. F.10. X3622 We have had one of the latest strengthened inlet rockers break. This rocker has been on the engine for 11… | ||
| Scan078 | The despatch of a broken inlet rocker to Mr. Royce for inspection. | ||
| View original record | To BP. from Hs. c. to Mt. X4803 Hs5/LG26.11.26. We are sending into the Stores for despatch to Mr. Royce, West Wittering :- 1 Broken Inlet rocker (F.10) Will you please issue the necessary… | ||
| Scan079 | Leakage and design issues with the camshaft drive and hand turning gear. | ||
| View original record | To RG. from R. c. to BJ. Hs. BY. X4003 RL/M27.11.26. RR. F.10. CAMSHAFT DRIVE, AND HAND TURNING GEAR. X.4003 X.4036 We are surprised at the leakage from the camshaft drive, as the whole drive and… | ||
| Scan080 | Endurance tests conducted on a wet liner engine. | ||
| View original record | EXPERIMENTAL REPORT. K4003 B. R. 403 (40 H) (RL 42 12-7-23). J.H., D. COPIES TO: R.Cd. BJ. WOR. By. E. Da. EP. PN. OY. RG. Expl. No. K29122 K3000 REF. Hs/VHL/T27.11.26. OBJECT OF TEST. Endurance tests… | ||
| Scan081 | With a diagram proposing a design for a revolution indicator drive on a camshaft. | ||
| View original record | To RG. from E. c. to BJ. Hs. HY. Handwritten: X4003 RR. F.10. REVOLUTION INDICATOR DRIVE. X.3804 X.4003 X.1807 In our memo. E2/M26.11.26., we gave Mr. Royce's criticisms of the scheme submitted for… | ||
| Scan082 | Letter discussing alterations to the F.X. Camshaft Drive and Hand Turning Gear. | ||
| View original record | R.R. F.X. - CAMSHAFT DRIVE & HAND TURNING GEAR. We are in receipt of your L/M27. 11. 26. We are sending you herewith prints of E.27889 and E.27258, so that you can see exactly what we have. We think… | ||
| Scan083 | 10-hour non-stop hangar test of an F.10 engine which resulted in a camshaft failure. | ||
| View original record | R.R. 403 (40 H) (SL 42 12-7-23). J.H., D. X4003 EXPERIMENTAL REPORT. 1.12.26 COPIES TO: R.C.J. BJ. WOR. By. E. Da. EP. PN. OY. (RG) Expl. No. K2917A X2654 REF. Hs/TAG/LG2.12.26 OBJECT OF TEST.… | ||
| Scan084 | Page 2 of an engine test report detailing performance data and adjustments made to magneto gap and tappet clearances. | ||
| View original record | contd :- -2- R.P.M. ............................ 2100 Oil pressure ...................... 67 lbs/sq.in. Oil consumption ................... 6 pts/hr. Oil temperature - inlet ........... 59°C " " -… | ||
| Scan085 | The dispatch of a broken rocker shaft to Mr. Royce for inspection. | ||
| View original record | To EP. from He. c. to Mt. X6003 Hs/LG2.12.26 We are sending into the Stores for despatch to Mr. Royce, West Wittering :- 1 broken rocker shaft. for his inspection. Will you please issue the necessary… | ||
| Scan086 | Notice of material modification and heat treatment for R.R.F.X. Rocker Shafts. | ||
| View original record | Y6003 BY/EL. c. Hs. c. Wd. BY9/H. 14.12.26 RECEIVED R.R.F.X. ROCKER SHAFTS E.27922/3. ---------------------------------- Please note that we should modify the above material at once from 2031 B, which… | ||
| Scan087 | Rocker shaft failure after 25 hours, proposing a change in material to a higher carbon, heat-treated steel tube. | ||
| View original record | To R. from Hs. c. to HJ. Wor. c. to RG. E. c. to BY. X4003 Hs1/LG2.12.26. RR. F.10 - ROCKER SHAFT. We have had a rocker shaft break on an engine after 25 hrs. running. On previous engines we have run… | ||
| Scan088 | Design of a spring-mounted tachometer drive on a camshaft, referencing drawing LeC.2331. | ||
| View original record | To EY. from E. c. to BJ. RG. HS. V4003 E/1/M3.12.26. RR. F.10. TACHOMETER DRIVE. X.4003. X.2063. We send you herewith drawing LeC.2331. shewing the RR.F.10 tachometer drive on camshaft. We believe the… | ||
| Scan089 | Two mandatory modifications for R.R.F.X. engines. | ||
| View original record | X4003 BY/SL. [SL is struck through] C. HS. C. HS [HS is struck through] C. BY/SS [BY/SS is struck through] BY12/H. 3.12.25. [STAMP: RECEIVED] R.R.F.X. ========== There are two modifications which will… | ||
| Scan090 | Analysis and proposed improvements for a broken RR.F.10 rocker arm. | ||
| View original record | To RG & HS. from R. c. to BJ. BY. X4003 RL/M4.12.26. RE BROKEN RR.F.10 ROCKER ARM. X.4003. We take it that the broken bar is on the inlet side, and assume that it broke in the centre first, also that… | ||
| Scan091 | Drawing for a breather on the crankcase and a forthcoming timing disc. | ||
| View original record | To BY. from AJS. c. to BJ. RG. HS. X4003 AJS2/M8.12.26. RR.F.10. X.4003. In reference to our wire asking you to hold up crankcases, we have now hended to RG. a drawing - LeC.2336 - shewing a breather… | ||
| Scan092 | Drawings for gungar, stronger inlet rockers, and tachometer drive for the R.R. F.10. | ||
| View original record | To EY. from E. c. to BJ. Hs. RG. X4003 E1/M9.12.26. R.R. F.10. (1) GUNGGEAR ON WHEELCASE. X.3837. (2) STRONGER INLET ROCKERS. X.4003. (3) TACHOMETER DRIVE. X.2063. We send you herewith drawings… | ||
| Scan093 | Revised drawing for a camshaft drive and a request for prints. | ||
| View original record | To BY. from E. c. to BJ. RG. HS. V4003 E2/M14.12.26. RR.F.10. CAMSHAFT DRIVE. X.4003. We send you herewith drawing LeC.2340., shewing the above revised. For the purpose of facilitating the timing of… | ||
| Scan094 | Attaching a preliminary drawing of valve rockers without rollers. | ||
| View original record | X4003 To RG. from E. c.c. to BJ. EY. HS. E1/M16.12.26. RR.F.10. PRELIMINARY DRAWING OF VALVE ROCKERS (WITHOUT ROLLERS). X.4003. X.3822. We attach the above drawing herewith LeC.2344. E. | ||
| Scan095 | Test report on the ability of scavenger pumps to handle additional oil in the crankcase. | ||
| View original record | To R. from Hs/VH. c. to BJ. Wor. c. to RG. E. c. to BY. 44003 Hs/VHl/LG18.12.26. F.10. SCAVENGER PUMPS. X3999 Tests have been carried out on 10-F-8 and 10-F-12 to determine the ability of the… | ||
| Scan096 | Modifications to cam design to prevent valve float and spring breakage at high speeds. | ||
| View original record | To E. Hs. To RG. BY. from R. c. to BJ. Wor. X4003 R1/M20.12.26. RR. F.10. VALVES LEAVING CAMS. X.3822 X.4003 Mr. Lovesey's very able reports give two somewhat different diagrams. The first one the… | ||
| Scan097 | Engine valve spring pressure and rating in relation to air flow. | ||
| View original record | contd :- -2- With the higher spring rating and sufficient maximum spring pressure, say 60 lbs. there should be very little risk of rollers leaving cams at top, and also very little risk of broken… | ||
| Scan098 | Design of valve rockers and cams for a new 750 HP engine, with an accompanying sketch. | ||
| View original record | RG. To E. Hs. ) FROM R. +4003 R1/M21.12.26. c. to BJ. Wor. F.10. XXXXXX VALVE ROCKERS. X.4003 X.3866 X.4011 X.3822 It may prove best to still have the exhaust with rollers because of the extra stress… | ||
| Scan099 | Causes of valve bounce, particularly the effect of air pressure versus elasticity and friction. | ||
| View original record | To RG. E. Hs. from R. c. to BJ. Wor. X4003 R2/M22.12.26. VALVE BOUNCE. X.3822 X.4003 If you run a valve on rig with weak springs fast enough to leave the cam, how does it behave without air? Is it not… | ||
| Scan100 | Drawings for valve rockers without rollers. | ||
| View original record | To RG. from E. c. to BJ. BY. Hs. X4003 E1/M23.12.26. RR. F.10. VALVE ROCKERS (WITHOUT ROLLERS.) X.4003 X.3822 We send you herewith drgs. LeCs. 2350/51., shewing the above. Blueprints of these drawings… | ||
| Scan101 | Design of cams, springs, and valves for an engine. | ||
| View original record | L4003 To E. from R. c. to BJ. Wor. RG. c. to Hs. BY. R1/M29.12.26. RR.F.10. CAMS AND SPRINGS, INLET AND EXHAUST VALVES. X.3822 X.4003 X.4011 There is tremendous latitude, and pitfalls in arranging the… | ||
| Scan102 | Design of non-roller type valve rockers and cams. | ||
| View original record | To E. from R. c. to BJ. RG. c. to BY. Hs. +4003 R1/M30.12.26. F.10. VALVE ROCKERS. X.4003 X.3822 X.3866 NON ROLLER TYPE. SKETCH. I cannot really understand why you say we must have curved surface not… | ||
| Scan103 | Expressing dissatisfaction with rollerless valve rockers and awaiting new designs. | ||
| View original record | To Hs. RG. E. DA. from R. 44003 R3/M31.12.26. VALVE ROCKERS. X.3822 X.4003 I have the impression that the rollerless rockers are not yet sufficiently perfect to proceed, and some days ago sent… | ||
| Scan104 | Design and arrangement of exhaust rockers for a new engine. | ||
| View original record | 4003 To E. RG. Hs. from R. RL/M1.1.27. c. to BJ. Wor. BY. RR & F.10. EXHAUST ROCKERS. X.3822 E.4011 X.4003 It looks to me as if the inlet rocker shaft should be the same distance from the valves and… | ||
| Scan105 | Contributing factors to valve bounce in F.10 engines. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to BY. V4003 Hs/ACL1/LG4.1.27. F.10. VALVE BOUNCE. /3822 Considering the question of valve bounce on the F.10. and going over some of the tests which… | ||
| Scan106 | Valve friction, bounce, and a new apparatus for recording valve motion. | ||
| View original record | contd :- -2- The above factors might explain some of the difference between the behaviour of the inlet and exhaust valves. We have taken some readings of the friction existing during the opening and… | ||
| Scan107 | Graph showing the load-lift curves for F.X. inlet valves with lubricated triple springs. | ||
| View original record | LOAD-LIFT CURVES FOR F.X. INLET VALVES. TRIPLE SPRINGS - LeC.2281. ALL PARTS LUBRICATED SPRING PRESSURE lbs. VALVE LIFT. INS. LIFTING. LOWERING. STAMP: ROLLS ROYCE LTD / DERBY / -4 JAN 1927 / C | ||
| Scan108 | Blueprint detailing an apparatus for recording engine valve bounce. | ||
| View original record | THIN PLATE JOINING TWO SPG. WASHERS TO PREVENT SCRIBER TURNING. SLIDING PIECE ATTACHED TO DISC. SPLIT BUSH CLAMPED ROUND SHAFT. CAMSHAFT. CAMSHAFT BEARING REMOVED NEXT TO CYLINDER UPON WHICH TESTS ARE… | ||
| Scan109 | Typed document with handwritten reference numbers and a date stamp, where the main text is illegible. | ||
| View original record | Hs/ACL I/LG 4.1.27 [Illegible typed text] 4 JAN 1927 DERBY. | ||
| Scan110 | Design improvements and testing for engine components including springs, rockers, and cylinder block studs. | ||
| View original record | To E. RG. Hs. from R. c. to BJ. Wor. BY. R1/M10.1.27. 4003 RR. F.10, CYL. BLOCK, VALVE ROCKERS, & VALVE SPRINGS. X.3866 X.4003 X.3822 I think it would be quite good to test half gauges 136 and 098 for… | ||
| Scan111 | Advantages and implementation of rollerless divided valve rockers. | ||
| View original record | To E. RG. Hs. from R. c. to BJ. Wor. BY. RR. F.10. VALVE ROCKERS. X.3822 Re. LeC. 2363. X.4003 These are the rollerless divided rockers that have many advantages. (1) They halve the risk of an… | ||
| Scan112 | Valve bounce and advocating for further investigation into valve spring failures. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to RG. E. c. to BY. X4003 Hsl/LG13.1.27. F.10. VALVE BOUNCE. X3822 for complete set of prints. The valve springs which are instructed for the first engines for flight… | ||
| Scan113 | Investigations into valve bounce and spring breakage on the Falcon engine, comparing double and triple spring types. | ||
| View original record | Hs/ACLL/LG13.1.27. F.10. VALVE BOUNCE AND SPRING BREAKAGE. Further investigations have been made on the question of valve bounce and spring breakage on the Falcon engine and we have also had a good… | ||
| Scan114 | Report page analyzing valve bounce and spring oscillation at high camshaft speeds. | ||
| View original record | contd :- -2- It will be seen that they both start to bounce, or the valves leave the cam, at approximately the same speed of 1350 r.p.m. of the camshaft. At this stage it is only just before the valve… | ||
| Scan115 | Tests comparing the spring motion of dual and triple springs, noting coil surging and bunching. | ||
| View original record | contd :- -3- Tests made with similar parts in which the oscilloscope was used to observe the spring motion did display a marked difference between the dual and triple springs. Violent surging of the… | ||
| Scan116 | Conclusion on valve bounce and spring oscillation, proposing modifications for further testing. | ||
| View original record | contd :- -4- Probably valve bounce is not so much the root of the trouble as an attendant phenomenon of spring oscillation. The aim, from the conclusion drawn from these tests, seems to be to avoid… | ||
| Scan117 | Particulars of valve springs and a loading chart for Falcon X valve bounce tests. | ||
| View original record | FALCON X VALVE BOUNCE TESTS PARTICULARS OF VALVE SPRINGS | | DOUBLE SPRINGS | TRIPLE SPRINGS | |---|---|---|---|---|---| | | OUTER | INNER | OUTER | CENTRE | INNER | | | E.28524 | E.28528 | E.28485 |… | ||
| Scan118 | Cover page with a handwritten reference number and a print room stamp. | ||
| View original record | Hs/ACL 1/LG 13.1.27 ROLLS-ROYCE LIMITED PRINT ROOM 13 JAN 1927 DERBY | ||
| Scan119 | Diagram illustrating the action of Falcon X triple valve springs just below bouncing speed. | ||
| View original record | FALCON X VALVE SPRINGS ACTION OF THE TRIPLE SPRINGS JUST BELOW THE SPEED OF BOUNCING START TO OPEN FULL OPEN DIAGM. SHEWING HOW THE COILS OF THE SPRING BUNCH TOGETHER AT THE ENDS ACE/S | ||
| Scan120 | Falcon X engine valve bounce tests comparing double and triple spring setups. | ||
| View original record | FALCON X VALVE BOUNCE TESTS TEST N° 1. – LARGE DIA. DOUBLE SPRINGS TO LEC 2287. VALVE E28651. TOP WASHER E28530 WEDGES E28070 OUTER SPRING E28529. INNER SPRING E28528. ROCKERS & CAMSHAFT TO ARRGT… | ||
| Scan121 | Faded and largely illegible typed document with a handwritten reference and a date stamp. | ||
| View original record | Hs/ACL 1/LG 13.1.27 [Illegible text] ROLLS-ROYCE LIMITED. PRINT ROOM 13 JAN. 1927 DERBY | ||
| Scan122 | Design propositions for valve rockers and rocker bar centres. | ||
| View original record | To R. from E. c. to B.J. c. to Hs. BY. X4003. E1/M15.1.27. RR. F.10. VALVE ROCKERS X.3822 WITHOUT ROLLERS. X.4003 X.3866 Regarding your memo. of the 11th.inst. there appears no reason why we cannot… | ||
| Scan123 | Design alterations and progress on engine components, including cams, rockers, valve springs, and camshaft brackets. | ||
| View original record | To R, from E. West Wittering. 9th.Jan. 1927. Although it may not appear so on inspecting LeC.2351 we passed through the same stage of reasoning as outlined in your memos. with a view to making the… | ||
| Scan124 | Selection of new valve springs, weighing the benefits of different specifications against potential engine modifications. | ||
| View original record | To E. RG. BY. Hs. From R. c. to BJ. Wor. [Handwritten]: X4003 [Stamped, inverted text]: CERTIFICATE [Stamped, inverted text]: ...ROYCE ENGINES...R1/M20.1.27. F.10. VALVE ROCKERS, SPRINGS ETC. X.4003… | ||
| Scan125 | Questioning the delay in implementing new type springs and investigating the cause of defective ones. | ||
| View original record | contd :- -2- direction to the triple springs which were lowest rating and most defective springs. How long is it since these new type springs were first instructed, and why have we not heard a word… | ||
| Scan126 | Design considerations for a new cam for rollerless rockers, focusing on spring pressure and operating characteristics. | ||
| View original record | X.4003 To E. RG. BY. HS. from R. c. to BJ. Wor. RR. F.10. CAM FOR ROLLERLESS ROCKERS. I do not know if these are being made. I have not seen any diagrams of the proposed accelerations and… | ||
| Scan127 | Proposal for a new inlet cam form submitted for criticism, detailing changes to acceleration and engine timing. | ||
| View original record | To R. from E. X4003 E1/10.2.27. c. to BJ. LRG. YHS. DIRECTOR OF EXPERIMENTAL DEPT. Re. F.10. CAM FORMS. X.4003 X.3822 We send you herewith print of inlet cam form - Lec.2378 - shewing the first… | ||
| Scan128 | Design and urgent production of compensated cams for the F.10 engine. | ||
| View original record | X4003 To E.RG. HS. BY. From R. c. to BJ. Wor. CAMS FOR F.10. COMPENSATED FOR AIR AND FRICTION INLET. R2/M13.2.27. X.4003 X.3822 I have received print Lec.2378., and agree that there is considerable… | ||
| Scan129 | Instructing the Drawing Office to proceed with a new exhaust cam and await a blueprint for a modified valve lift curve. | ||
| View original record | To R. from E. c. to BJ. RG. Hs. BY. V4003 E1/M15.2.27. F.10. CAM FORMS. X.4093 X.3822 Further to our memo. E1/M10.2.27., please note we have instructed the D.O. to go ahead with LeC.2378½, together… | ||
| Scan130 | Alternative designs for valve gear rocker bars and their mounting. | ||
| View original record | 1153 +4003 To E. RG. Hs. from R. R5/M23. 2. 27. c. to BJ. WorMBY. RR. F.10. VALVE GEAR. X.3822 Lec. 2383 X.4003 I agree that rocker bars should not be drilled for bolts, and that strength should be… | ||
| Scan131 | The failure of a camshaft vertical drive on an X.F.8. engine during endurance testing. | ||
| View original record | Yeoos To R. from Hs. c. BJ. Wor. c. Rg. E. c. Ex. Hsl/T24.2.27. FAILURE OF CAMSHAFT VERTICAL DRIVE ON X.F.8. Y3870 The above engine has been running endurance tests on the hangar at 2100 r.p.m. which… | ||
| Scan132 | Aero engine reliability, focusing on piston failure from oil gumming and comparing various oils. | ||
| View original record | 2862 K4003 To RG. Hs. E. from R. c. to BJ. Wor. HY. ROLLS-ROYCE LIMITED DERBY AERO ENGINE RELIABILITY. X.3804 X.1282 X.4003 X.3996 I am very anxious about the above, and all our talent should be… | ||
| Scan133 | Continued memorandum discussing camshaft drive problems and logistical arrangements for personnel. | ||
| View original record | contd : -2- until he can say definitely if it is oil, rings, or piston design. The other trouble seems the camshaft drive. I have long ago suggested that we run with and without spring drive, but I do… | ||
| Scan134 | Recalculation of special cam forms and valve lift curves for the F.10 engine. | ||
| View original record | Y4003 Hg. Hs. RMC. BY12/H. 3.3.20 RECEIVED ROLLS ROYCE F.10. ENGINE. ------------------------ With reference to the special cam forms to work with roller-less tappet levers, whilst apparently we… | ||
| Scan135 | Modifications to valve lift curves for rockers without rollers, specifically regarding timing and rocker radius. | ||
| View original record | To RG. from E. c. to BJ. BY. Hs. X4003 E5/M7.3.27. RR. F.10. VALVE LIFT CURVES FOR ROCKERS WITHOUT ROLLERS. X.4003 X.3822 We have examined schemes Nos. 881, 888 and 889. Sch. 888 - inlet valve lift… | ||
| Scan136 | Two schemes for strengthening rocker bars and designing oilways for valve gear rockers without rollers. | ||
| View original record | To RG. from E. c. to BJ. BY. Hs. X4003 E1/M8.3.27. RR. F.10. VALVE GEAR ROCKERS WITHOUT ROLLERS. X.4003 X.3822 We send herewith a blueprint of Lec.2390 shewing the treatment for strengthening the rear… | ||
| Scan137 | Valve lift curves, cam timing adjustments, and the design considerations for making camshafts interchangeable. | ||
| View original record | X4003 BYL/C.11.3.27. Hs RECEIVED MAR 11 1927 R.R.F.10. VALVE LIFT CURVES FOR ROCKERS WITHOUT ROLLERS. With reference to E5/M7.3.27. the time period of the sharp acceleration was decreased as suggested… | ||
| Scan138 | Proposal to use an artificially weakened camshaft drive for hangar tests to evaluate improvements. | ||
| View original record | To R. from Hs/Rm. c. to BJ. Wor. c. to RG. E. c. to BY. +4003 Hs/Rm6/LG11.3.27. F.10. HANGAR TESTS. X2654 Our difficulty so far is that of measuring absolutely any improvement we make to the… | ||
| Scan139 | The failure of camshaft and magneto drives on a hangar test, suspecting torsional vibration as the cause. | ||
| View original record | Hs/ACLL/GLG10.3.27. F.10. A FAILURE OF CAMSHAFT AND MAGNETO DRIVES ON HANGAR. Due to such troubles as shearing the splines of the upper vertical camshaft drive and driving pegs of the magneto brass… | ||
| Scan140 | Comparison of explosion impulses and inertia torque in 20 HP and Falcon engines, and analysis of crankshaft oscillations. | ||
| View original record | contd :- -2- on the 20 HP. The fundamental difference in the two cases is that whereas the 20 HP. has both three explosion impulses and the same number inertia torque impulses in one revolution, the… | ||
| Scan141 | Summary of crankshaft vibration tests analysing resonance and the effects of running the engine with and without a propeller. | ||
| View original record | contd :- -3- Repeating these experiments on the test bed con- siderable trouble was experienced with the apparatus at the lower speeds due to the unsteadiness of the engine speed made manifest by the… | ||
| Scan142 | Crankshaft vibration tests, the effectiveness of a spring drive as a shock damper, and further testing with a flywheel. | ||
| View original record | contd :- -4- the end of the crankshaft and appeared more severe when the engine was operating under the inertia of the propeller, we attempted to find if the timing drives, magneto and valves were… | ||
| Scan143 | Confirming instructions for adjusting the camshaft drive on F.10 hangar engines. | ||
| View original record | To RHC. from Hs/Rn. t4003 Hs/Rn8/LG16.3.27. F.10. This is to confirm that you will slack the nut on the top of the vertical drive of the Camshaft drive slightly on the hangar engine. In the case of… | ||
| Scan144 | Resolution of camshaft troubles, proposed magneto drive modifications, and ongoing engine performance issues. | ||
| View original record | [Mirrored text from reverse] CERTIFICATE OF INSPECTION To Hs. from Hs/Rm. [Handwritten] √4003 Hs/Rm15/LG16.3.27. [Mirrored text from reverse] ROYCE ENGINES AND SPARES [Handwritten over text]… | ||
| Scan145 | Test report on a Falcon 10 engine camshaft drive failure and subsequent endurance testing. | ||
| View original record | To R. from Hs/Rm. c. to EX. Wor. c. Rg. E. c. BY. c. HS. (Avenue Malakoff, Paris) Y9003 Hs/Rml/T1 8.3.27. RE FALCON 10. CAMSHAFT DRIVES. Y3844 In view of the failure experienced on the vertical… | ||
| Scan146 | Camshaft spline and magneto drive issues, including proposed modifications for testing. | ||
| View original record | -2- Contd. splines without trouble. We thought the plain bearing might introduce damping. We are therefore of the opinion that our previous trouble must have been produced by some exceptional… | ||
| Scan147 | Camshaft drive endurance tests with an aluminium pin and frictional damper. | ||
| View original record | To H. from Hc/Rm. C.c. to BJ. G.WOR. [crossed out] C.c. to RG. E. [crossed out] C.c. to BY?. [crossed out] X4003 Hs/Rm3/LG22.3.27. F.10. CAMSHAFT. With reference to your wire which we received on the… | ||
| Scan148 | Cross-sectional diagram showing the arrangement for a camshaft driving pin. | ||
| View original record | [ "A", "3/4" SOFT ALUM PIN TO DRIVE CAMSHAFTS", "SPLINES DELETED", "ARRGT FOR CAMSHAFT DRIVING PIN" ], | ||
| Scan149 | Cover sheet with a handwritten reference number, date, and a stamped date. | ||
| View original record | Hs/Rm 1/T 18.3.27 ROLLS-ROYCE, LIMITED KIT ROOM, 19 MAR 1927 | ||
| Scan150 | Blueprint for rockers without rollers and its impact on cam and valve lift. | ||
| View original record | E. c. to Rs. c. to Hs. X4003 BY/Cgh8/G.23.3.27. R.R. F.10. - ROCKERS WITHOUT ROLLERS. With further reference to E5/M7.3.27. we send you herewith blueprint of Sch. 904 showing layout of rockers without… | ||
| Scan151 | Confirmation of a telegram detailing engine design decisions and issues. | ||
| View original record | To RG. Hs. HY. from R. c. to BJ. Wor. X9003 NO DATE GIVEN BUT BELIEVED TO BE ABOUT 21.3.27. CONFIRMATION OF TELEGRAM FROM LE CANADEL. X.3804 X.4010 X.4550 X.2334 X.3996 X.4003 ROYCAR - DERBY. POSTED… | ||
| Scan152 | Camshaft drive failures, focusing on damping friction and proposing design improvements. | ||
| View original record | To RG. Hs. BY. from R. & E. X4003 R1/M24.3.27. c. to BJ. Wor. RR. F.10. CAMSHAFT DRIVES. X.4003 X.3844 While Mr. Hives was here we discussed the above failure outside such faults as seized shafts and… | ||
| Scan153 | Excessive wear on valve rocker bushes in Condor III engines at Farnborough and potential design modifications. | ||
| View original record | A. M. FORM 1084. AERONAUTICAL INSPECTION DIRECTORATE. MEMORANDUM. No. 35 From INSPECTOR IN CHARGE A.I.D. To Mr. Bailey. Mr. Rowledge. Mr. Platford. Mr. Hives. Mr. Grimmer A.I.D. Date April 4th, 1927.… | ||
| Scan154 | Series of camshaft drive tests conducted on an X-F-10 engine. | ||
| View original record | To R. from Hs/FCW. c. to BJ. Wor. c. to RG. E. c. to BY. X4003 HS/FCW1/LG5.4.27. F.10. CAMSHAFT DRIVE TESTS. re. reproduction of camshaft drive failure - these tests were carried out on X-F-10, on the… | ||
| Scan155 | Report page detailing the conditions and results of engine endurance tests, noting component wear and a premature test termination. | ||
| View original record | contd :- -2- Results. 5 hrs. run completed - no failures. On dismantling and examining splines and bevel there were signs of wear. Test (6). Conditions. As per test (5) but friction damper arranged as… | ||
| Scan156 | On a new, simpler camshaft drive for the F.10 high compression engine. | ||
| View original record | RG. Hs. BY. c. to BJ. Wor. +4003 RL/M7.4.27. RR. F.10. HIGH COMPRESSION ENGINE. X.3801+ X.4003 This could have the new camshaft drive, which is a better unit for strength, wear, weight, and cost: it… | ||
| Scan157 | The material specification and heat treatment for a new camshaft and rocker mechanism. | ||
| View original record | X4003 BY/BE. c.RHC. c.HS. c.RG. C.Mr.Pendlebury. BY10/H. 7.4.27. ROLLS ROYCE F.10. CAMSHAFT & ROCKER MECHANISM. In the new camshaft and rocker mechanism of the roller-less type, one of the most… | ||
| Scan158 | Improved key for the rear camshaft bearing following a failure report. | ||
| View original record | To RG. from E. c. to EY. Hs. +4003 E2/M14.4.27. RR. F.10. VALVE GEAR. X.3822 X.4003 We send herewith LeC.2408 shewing an improved key for the rear camshaft bearing. This is consequent upon Hs' report… | ||
| Scan159 | Drawing of a modified camshaft drive with a bayonet joint for easier engine timing. | ||
| View original record | To BY. from E. c. to BJ. RG. Hs. X.4003 E2/M30.4.27. RR. F. CAMSHAFT DRIVE. We send herewith drg. LeC.2412 shewing the camshaft drive with modified casing to facilitate timing of engine. The camshaft… | ||
| Scan160 | Modifications to the camshaft drive, cylinder block casting, and carburettor. | ||
| View original record | To RG. from R. Hs. c. to BJ. Wor. BY. (X 4003) R7/M3.5.27. RR. B.10. X.4003 X.3866 X.3933 We have lately sent you improved camshaft drive, with its greater simplicity, and greater convenience of… | ||
| Scan161 | The manufacturing of F.11 engine camshafts and awaiting confirmation on the final cam form. | ||
| View original record | To EY. from RHC. C.c. Hs. X4003 RHC5/BE. 25.6.27. RE F.11. CAMSHAFTS With reference to Camshafts for the 25. F.11. Engines, these have been prepared in a rough machined condition, leaving the cams… | ||
| Scan162 | Camshaft and high compression piston modifications for 2b engines. | ||
| View original record | Hs JUN 28 1927 RECEIVED Rg. (WW) HS. O.R.H.C. X900 BY8/H. 28.6.27. ROLLS ROYCE F.11. - CAMSHAFTS. I would like to have some definite information as to whether we are at liberty to go ahead with the… | ||
| Scan163 | Recommendation to proceed with standard camshafts for F.11 engines due to RPM limitations. | ||
| View original record | To RG. From Hs. c. to EY. Nor. c. to RIC. X4003 HS3/LCSO.6.27. CAMSHAFTS FOR F.11. X4003 / X3872 Tests with the longer duration cams shew that the advantage to be gained from this will only be… | ||
| Scan164 | The effect of using longer duration inlet camshafts and rollerless rocker type E.30006. | ||
| View original record | R.R. 403 (40 H) (SL 42 12-7-23). J.H., D. X4003 EXPERIMENTAL REPORT. COPIES TO: R.O.F. (B.J) WOR (By) E.D.R. EP. PN - CYF RG Expl. No. 2934 REF. Hs/VHl/LG10.8.27. OBJECT OF TEST. Effect of using… | ||
| Scan165 | Comparative power curve graph for F.10 engines, testing the effect of a later inlet closing time. | ||
| View original record | EFFECT OF A LATER INLET CLOSING R.R. F.10. ENGINES. (ROLLERLESS ROCKER TYPE) COMPARATIVE POWER CURVES:- A. "STANDARD" CAMSHAFTS E. 3000G/7 B. "LONG INLET" CAMSHAFTS. E. 3000G/7.X. C/BHP R.P.M. Diagram… | ||
| Scan166 | Single page document with a handwritten reference at the top and a date stamp at the bottom. | ||
| View original record | Hs/VH 1/LG 10.8.27 [Illegible handwritten text] ROLLS-ROYCE LIMITED PRINT No. 10 AUG 1927 | ||
| Scan167 | Proposed Condor valve lift curve and its application to other aero engines. | ||
| View original record | To RG. from E. c. to BJ. BY. Hs. X4003 E1/M3.9.27. PROPOSED CONDOR VALVE LIFT CURVE. X.3616 X.3822 We send herewith drg. LeC.2455 giving the projected shape of the Condor valve lift curve. This curve… | ||
| Scan168 | Timing procedures for F.11 and F.12 engines. | ||
| View original record | To EP. from Hs/VH. c. to Hs/TMW. c. to Hs/TAG. (4003) Hs/VH2/LG6.10.27. RR. F.11. and F.12. TIMING. X1770 X3822 With regard to the timing of these engines, it is necessary that we should :- (a)… | ||
| Scan169 | Procedure for timing the F.11 and F.12 engines. | ||
| View original record | To BY. from Hs/VH. c. to RG. EP. +4003 Hs/VH1/LG6.10.27. RR. F.11. & 12 TIMING. X1770 <3822 With reference to BY5/H30.9.27. Until we have complete records from the first 25 engines we are not in a… | ||
| Scan170 | Continued document detailing engine timing specifications, clearances, and variations. | ||
| View original record | contd :- -2- in the fully advanced positions. The 35º will be obtained by two marks on the thrust housing E.30557 :- *1.19" or 35 X .632 = 22.1º apart for a .632 geared engine, and 1.04" or 35 X .550… | ||
| Scan171 | Listing the allowances for engine timing and camshaft inspection inaccuracies and their potential causes. | ||
| View original record | contd :- -3- (1) Allowance when timing engines, roughly 2° (crankshaft) either way. (2) Allowance for error with regard to setting pointer, roughly 1° (crankshaft) either way. (3) Cam angularity… | ||
| Scan172 | Testing of aluminium alloy bearings for camshafts to save weight. | ||
| View original record | +4003 Hs. BY. E. RG. c. to BJ. Wor. Fl. R3/M8.4.28. ALUMINIUM ALLOY BEARINGS. X.3032 X.4093 I quite agree with Mr. Hall that these should be tested. We are using them for camshafts and would like to… | ||
| Scan173 | Confirming arrangements to add an oil drain hole to the camshaft drives on 'Fox' and 'Wizard' machines. | ||
| View original record | X9003 To Fl. from Rg. c. Hs. EP. RHO. Rg3/LW.16. 4. 28 Further to our telephone conversation this afternoon, we can arrange to put in the oil drain hole in the top bevel casing to feed oil down the… | ||
| Scan174 | Amendment to the F.11 & F.XII engine timing instructions due to unsecured telescopic covers on the camshaft drives. | ||
| View original record | To RG. From Hs/VH. c. to BY/NW. c. to EP. L4003 Hs/VH1/LG2. 5. 28. RR. F.11 & F.XII - ENGINE TIMING. 41770 We have experienced some trouble on the test beds due to the telescopic covers of the… | ||
| Scan175 | Instruction book page detailing the timing procedure for F.XI & XII engines. | ||
| View original record | TIMING OF RR.F.XI & XII ENGINES. For Instruction Book. (1) Set the inlet tappets on Al. and B6. cyls. with a clearance of .025". (2) With the camshaft drives disengaged, turn the engine until Al.… | ||
| Scan176 | Methods for accurately finding the engine's top dead centre (TDC). | ||
| View original record | contd :- -3- A very accurate method of finding the firing top dead centre (valves closed) can be arranged by filling the combustion space with oil, using a short length of glass (or metal) tube fitted… | ||
| Scan177 | Completed scheme to prevent the camshaft drive from coming out of mesh on F Type engines. | ||
| View original record | X.4003 To R. from RG. c. to BJ. By. Hs. Rg6/LW.24. 8. 28 F. TYPE ENGINES Whilst I was at West Wittering last week the scheme to prevent the camshaft drive from coming out of mesh was completed, and I… | ||
| Scan178 | Modifications to the camshaft drive for existing engines. | ||
| View original record | X.4003 E1/M25.8.28. BY. from E. c. to BJ. RG. Hs. RR.F. CAMSHAFT DRIVE. LeC.2587 We send you herewith the above drg. shewing modifications to be made to existing engines to improve the end location of… | ||
| Scan179 | Alterations for the A and B units and a future design for the RR.F. Camshaft Drive. | ||
| View original record | TG. from E. c. to BJ. BY. Hs. X. 4003 E2/M1.9.28. RR.F. CAMSHAFT DRIVE. We send herewith drg.LeC.2588/9 shewing the above. The former deals with alterations to the present engine on the A. unit side,… | ||
| Scan180 | Letter to the Air Ministry assigning modification numbers to scheme drawings for F-type engine components, specifically camshaft oil pipes and petrol pipes. | ||
| View original record | X4003 c. to R. c. By. Hs. Hy. c. EP RHC. D/BP. c. Mr. Wilkins. A.I.D. RG2/LW. Your ref.789999/27/R.D.E.2b. 8th September 1928 The Secretary, Air Ministry, Adastral House, Kingsway, W.C.2. For the… | ||
| Scan181 | Comparison of engine timing diagrams for standard and low lift camshafts, including clearance values. | ||
| View original record | To BY/CGH. from Hs/Rm. X4003 X4673 Hs/Rm2/LG18.9.28. With reference to Py/BLB11/AV/CP17.9.28 attached. The timing of the engine cold with standard and low lift camshaft is as follows [Left Diagram -… | ||
| Scan182 | Instructions for fitting new camshafts to the 'Pipit' and other machines, ensuring definite orders and payment. | ||
| View original record | To Rg. from Wor. To Hs. " To BY. " ----------------- X4003 Wor13/T.18.9.28. BJ.instructs that with regard to the camshafts fitted to the 'Pipit', if there is any suggestion that this new type of… | ||
| Scan183 | Comparative power tests of the RR.F.XI.S. engine no.35, using standard versus long duration cams. | ||
| View original record | To R. from Lr. c. to BJ. Wor. c. to RG. E. c. to HY. Hs. copy X 4003 Lr13/LG21. 9.28. COMPARATIVE POWERS OBTAINED WITH STANDARD AND LONG DURATION CAMS FROM TESTS CARRIED OUT ON THE RR.F.XI.S. ENGINE… | ||
| Scan184 | Engine performance tests conducted with air boxes and modified camshafts, including a comparison table of results. | ||
| View original record | contd :- -2- (2) The engine was sent back to the Works and a further test was conducted with air boxes (17.9.28). The results are shewn on Sheets 1. and 2. dotted lines. There appears to be a gain in… | ||
| Scan185 | Engine power improvements with long duration cams and collaboration with aircraft manufacturers. | ||
| View original record | CONTD :- -3- With the long duration cams, the ground level power at full throttle, 29.9" Hg Barometer, 15°C temp., is 730 B.HP. at 2250 ) 820 B.HP. at 2500 ) 100% Benzol There appears to be an… | ||
| Scan186 | Performance comparison graph for a Vickers Scout engine with standard and long duration cams at various pressure heights. | ||
| View original record | RR F.XI.S SHEET 1 ENGINE No 35 - "VICKERS SCOUT" .632 GEAR RATIO COMPARATIVE BED TESTS OF STANDARD & LONG DURATION CAMS THROTTLED INLET BOXES USED TO CREATE EQUIVALENT PRESSURE HEIGHTS CORRECTED TO A… | ||
| Scan187 | Cover page with a handwritten reference number, date, and a print room stamp. | ||
| View original record | Lr 13/66 21 9 28 R.R. - ROYCE, LIMITED PRINT ROOM, 21 SEP 1928 DERBY. | ||
| Scan188 | Graph comparing the performance of standard versus long duration cams on Engine No 35 - Vickers Scout. | ||
| View original record | SHEET 2 R.R. FxI S ENGINE No 35 - VICKERS SCOUT .632 GEAR RATIO COMPARATIVE TESTS OF STANDARD & LONG DURATION CAMS GROUND LEVEL CONDITIONS ENGINE THROTTLED TO + 2.5" HG. CONSTANT BOOST PRESS: (30.17"… | ||
| Scan189 | Blank page with a date stamp in the bottom right corner. | ||
| View original record | LIMITED ROOM, 21 SEP 1928 DERBY. | ||
| Scan190 | Performance graph showing altitude corrections for the FXI.S. engine with modified cams. | ||
| View original record | SHEET 3 -BHP / BHP-G B.H.P R.R. FXI.S. ENGINE № 35 VICKERS SCOUT .632 GEAR RATIO ALTITUDE CORRECTIONS APPLIED TO BOX TESTS (R.R. METHOD) MOD. CAMS (TESTS 19.9.28) B.HP 2500 RPM 2250 RPM BHP / BHP-G =… | ||
| Scan191 | Requirement to start the M.S/C. type test on engine No.113 and referencing another test on engine F.XI No.13. | ||
| View original record | to Wor. from Hs. c. to RG. c. to EP. c. to BY. c. to Mr. Wilkins. X4003 Y4H657 X 3196 X 4003 Hsl/LG22, 9.28. Capt. Forsyth has been on the 'phone this morning and stated that the A.M. would like us to… | ||
| Scan192 | Letter to Vickers Ltd. forwarding test results for the RR.F. XI supercharged engine, which has passed its Acceptance Test. | ||
| View original record | X4003 HS Expl: Dept: LRL/LG. 22nd. Sept. 1928. Messrs. Vickers Ltd., Aircraft Manufacturers, Weybridge, Surrey. Dear Sirs, For the attention of Mr. Radcliffe. We forward the results of tests on the… | ||
| Scan193 | Comparative power tests of standard vs. long duration cams on the F.XI.S. engine no. 35. | ||
| View original record | COPY. Lr13/LG21.9.28. COMPARATIVE POWERS OBTAINED WITH STANDARD AND LONG DURATION CAMS FROM TESTS CARRIED OUT ON THE RR.F.XI.S. ENGINE NO.35 (VICKERS). Further tests have been carried out on the… | ||
| Scan194 | Engine test results comparing performance with standard, flight-tested, and long-duration camshafts. | ||
| View original record | contd :- -2- (2) The engine was sent back to the Works and a further test was conducted with air boxes (17.9.28). The results are shewn on Sheets 1. and 2. dotted line. There appears to be a gain in… | ||
| Scan195 | Agreeing to fit long duration camshafts to the second engine for the Pipit machine. | ||
| View original record | To E.P. From Hs. c. to Wor. c. to RG. c. to BY. X4003 Hs2/L322. 9. 28. F.12.S-99. X 4003 (crossed out) X 4657 This engine we understand, is the second engine for the Pipit machine. It was agreed by… | ||
| Scan196 | Confirming an agreement for the Air Ministry to pay for long duration camshafts for an engine. | ||
| View original record | D/DP. C. B/A. C. Wos. C. Hs. C. Hy. C. EP. CEP X4003 Rg/L.W.25. 9. 28 F.XII.S. NO. 99 With reference to Hs/L.G.22.9.28, stating that it was agreed by Captain Forsyth that this engine should have the… | ||
| Scan197 | New cam forms for valves and their application in various engines. | ||
| View original record | RG. BY. From R. and E. X4003 HS. R2/M6.10.28. c. to BJ. Wor. CAMS FOR F. H. and SS. X.4003 X.5060 AND 20 HP. RE. BY2/G4.10.28. X.7090 X.3822 X.5090 X.4479 Any new cam forms for valves to be fitted… | ||
| Scan198 | Procedure for a moderate supercharger type test, focusing on the comparison of new and old camshafts. | ||
| View original record | X9003 HS. EP. C. to Py. C. to Mr. Wilkins, A.I.D. Rg5/LW.12. 10. 28 RE - MODERATE SUPERCHARGER TYPE TEST 525 BHP. RATING. (Py/Blb15/Av/Dll. 10. 28) Captain Forsyth's message saying that we could not… | ||
| Scan199 | Camshafts for the M.S. Type Test engine No. 113. | ||
| View original record | X4003. S/W. To Rg. from Py/BLB. c. to Hs. c. to HP. Py/BLB15/Av/D11.10.28. Re: MS. Type Test 525 B.H.P. Rating. Captain Forsyth has asked us to remind you that new type camshafts should not be fitted… | ||
| Scan200 | Letter to the Air Ministry enclosing a certified test curve for the F. Type engine with new long duration camshafts. | ||
| View original record | X9003 C. Hs. C. Py C. Mr. Wilkins, A.I.D. Rg2/LW. Your ref. 289999/27/R.D.E.2b/A.G.F. 13th October 1928 The Secretary, Air Ministry, Adastral House, Kingsway, W.C.2. For the attention of Captain A. G.… | ||
| Scan201 | Comparative power curves of standard and long-duration camshafts for the F.11 engine. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to RG. E. c. to EY. X4003 Hs2/LG16.10.28. F.11. CAMSHAFTS. We attach herewith comparative power curve on F.11 engine with standard and long duration camshaft. The… | ||
| Scan202 | Power curve comparison between a long duration and a standard camshaft. | ||
| View original record | POWER CURVE WITH LONG DURN. CAMSHAFT. COMPARISON WITH STANDARD CAMSHAFT. ROLLS ROYCE FXI ENGINE N° SLA. TA9. COMPRESSION RATIO = 7 : 1 GEAR RATIO = .552. MAGNETO TIMING = 40° BEFORE T.D.C. FUEL USED =… | ||
| Scan203 | Cover page with a handwritten reference number, date, and a Print Room reception stamp. | ||
| View original record | Hs 2/LG 16.10.28 ROLLS-ROYCE, LIMITED PRINT ROOM, 13 OCT 1928 DERBY. | ||
| Scan204 | The design and supply of drawings for long-duration camshafts for the F. Engine. | ||
| View original record | To BY. from Hs. c. to RG. X4003 Hs5/LG19.10.28. LONG DURATION CAMSHAFTS FOR F. ENGINE. We consider that RG. should supply the drawings and design for the long duration camshafts. We have handed to RG.… | ||
| Scan205 | Instruction memo regarding the production and fitting of a new long duration camshaft for an F.XII engine following its type test. | ||
| View original record | RHC. Rg. HS. X4003 BYG/G.18.10.28. F.XII M.S. NO. 113. ---------------- An instruction has been received by Rg. (ref. Py/BLB14/AV/D.15.10.28. instructing us that the above engine after it has… | ||
| Scan206 | The use and design of long duration camshafts for the F-type engine. | ||
| View original record | X 4803 BY C. Hs. Rg2/LW.27. 10. 28 LONG DURATION CAMSHAFTS FOR F. TYPE ENGINE The long duration camshafts for the above engine, which have been tested under official observance of the A.I.D. and… | ||
| Scan207 | Requesting instructions and an order number for moving camshafts from Engine F.XII.S.99 to a type test engine F.XII.MS.113. | ||
| View original record | X4003 D/BP. c. Hs. EP/Thn13/H5.11.28. At the request of Hs. and as agreed by Wor. we have arranged with the A.I.D. to send a man down to Parnalls tomorrow to take the long duration type camshafts off… | ||
| Scan208 | Requesting the retrieval of camshafts from a crashed Parnall Pipit engine to proceed with a full supercharged engine type test. | ||
| View original record | To EP. from Hs. c. to RG. c. to Wor. +9003 Hs6/LG14.11.28. TYPE TEST ON FULL S/C. ENGINE. Y 3196 We understand the only thing which is delaying this test starting is the long duration camshafts. The… | ||
| Scan209 | Decision to fit the full supercharged type test engine with new long duration camshafts. | ||
| View original record | X4003 BY. Hs. EP. D/HP. Rg1/L.W.10. 11. 28 It was decided during Captain Forsyth's visit yesterday that the full supercharged type test engine is to be fitted with the new long duration camshafts. Rg. | ||
| Scan210 | Variable valve gear design from the R.A.E. for single-cylinder water-cooled engines. | ||
| View original record | To E. from Hs/Lr. Lr1/LG17.11.28. X9003 +3560 As arranged during our recent conversation, we enclose blue print of the variable valve gear obtained from R.A.E., shewing their standard arrangement for… | ||
| Scan211 | Suitability of nitriding hardening for various aero engine components. | ||
| View original record | BY. from R. c. to BJ. Wor. c. to Hs. X4003 RL/M19.11.28. --------------------- NITRIFYING HARDENING. X.4469 X.3822 X.7060 X.4003 X.7090 --------------------- The first things to try in this are the… | ||
| Scan212 | Design of a single-cylinder test unit, focusing on its variable valve gear mechanism. | ||
| View original record | LR. from E. c. to BJ. RG. c. to HS. BY. X9003 E1/M19.11.28. X.3866 X.4003 RE. SINGLE CYL: TEST UNIT. Thank you for your memo. Lr1/LG17.11.28. and print of RAE. present type variable valve gear.… | ||
| Scan213 | The fitting of new camshafts to engines for the Interceptor Competition. | ||
| View original record | To Rg. from F. c. to Hs., EP., Bi., Wor. & PY. X 4003 F.2/Av/D21.11.28. With reference to the new type of camshafts to be fitted to our engines for the Interceptor Competition. I saw Major Bulman… | ||
| Scan214 | Urgent supply and fitting of new camshafts for F Engines in various interceptor aircraft. | ||
| View original record | To R. from F. c. to Wr. c. to Hs. c. to Mr. c. to W. X4003 F.3/Av/D22.11.23. Reference 'phone conversation regarding the new type camshafts which are required for the F. Engines in the Fairey… | ||
| Scan215 | The supply and fitting of new camshafts for Scout machines. | ||
| View original record | S/W. X4003 To BP. from Py/BLB. c. to OF., AF., M.M., Hg., & Hs. (Note: BP., OF., AF., Hg. are crossed out) Py/BLB2/AV/D23.11.28. Re: New Type Camshafts for Scout Machines. With reference to… | ||
| Scan216 | New camshafts for 'F' Engines in the Interceptor Competition. | ||
| View original record | S/W. X4003 To EP. From Py/BLB. c.c. to WOF... BP... AC... & Hs. Py/BLB1/Av/D26.11.28. Re: New Camshafts for 'F' Engines in Interceptor Competition. With reference to EP/ThAS/A.24.11.28. Capt. Forsyth… | ||
| Scan217 | Valve lift modifications and timing for the 'F' type supercharged engine. | ||
| View original record | E. (WW) c. Hs. +9003 BY/Cgh2/G.1.12.28. R.R. 'F' TYPE SUPERCHARGED ENGINE. ------------------------------- We send you herewith print of Sch. 1108 showing .470" valve lift curve which has been… | ||
| Scan218 | Instruction regarding the design and fitting of new F. Type camshafts to a test engine. | ||
| View original record | X4003 Hs. C.RHO. BY/Cgh3/K. 22. 12. 28. RE F. TYPE CAMSHAFTS. With reference to the new camshafts which we have instructed under cover of BY/EL6/ML4.12.28., the cam forms which we have instructed for… | ||
| Scan219 | Suggestions for camshaft and valve spring design to improve performance and reduce stress. | ||
| View original record | To E. from Hs/Rsn. 44003 Hs/Tsn1/LG29.12.28. CAMSHAFTS. 48090 In reply to E3/M20.12.28 about harmonic cams, it appears that to see whether we can gain anything useful from this, a lot of rather… | ||
| Scan220 | Simplification of mathematical expressions for cam lift using sinusoidal functions. | ||
| View original record | contd :- -2- I realise that in our methods of manufacture the corners are taken off these diagrams, but I think we might do something to help as well. In this case I think the mathematical expressions… | ||
| Scan221 | Results of camshaft comparison tests on supercharged engines. | ||
| View original record | To R. from Hs/VH. c. to BJ. SG. c. to Wor. RG. c. to E. BY. Hs/VHl/LG3.1.29. +4003 CAMSHAFT COMPARISON TESTS -X1770 ON (1) Full supercharged engine. (2) Moderate supercharged engine. Tests have been… | ||
| Scan222 | Comparative power curves for a fully supercharged engine at 10,500 feet, comparing standard and long duration camshafts. | ||
| View original record | R.R. FXII-S-105. FULL SUPERCHARGED ENGINE. COMPARATIVE POWER CURVES AT 10,500' A WITH STANDARD CAMSHAFTS B WITH LONG DURATION CAMSHAFTS INCREASE IN HORSE-POWER OBTAINED +5 +7 +11 HORSE-POWER CORRECTED… | ||
| Scan223 | Reference number and date on a blank cover page with a purple ink stamp. | ||
| View original record | Hs/VH 1/L6 8.1.29 ROLLS-ROYCE, LIMITED PRINT ROOM, 3 JAN 1929 DERBY. | ||
| Scan224 | Comparative power curves at full throttle for a moderate supercharger engine, comparing standard and long duration camshafts. | ||
| View original record | R.R F.XII-MS-113 MODERATE SUPERCHARGER ENGINE COMPARATIVE POWER CURVES AT FULL THROTTLE. A. WITH STANDARD CAMSHAFTS. B. WITH LONG DURATION CAMSHAFTS. FUEL:- 60/40 BENSOL/AVIATION PLUGS:- LODGE R 40… | ||
| Scan225 | Graph comparing power curves at 4,000' for a moderate supercharger engine using standard versus long duration camshafts. | ||
| View original record | RR F.XII-MS-113. MODERATE SUPERCHARGER ENGINE COMPARATIVE POWER CURVES AT 4,000' A. WITH STANDARD CAMSHAFTS B. WITH LONG DURATION CAMSHAFTS INCREASE IN HORSE-POWER OBTAINED +16 +27 HORSE-POWER… | ||
| Scan226 | Filing cover sheet with handwritten reference numbers and a date stamp. | ||
| View original record | Hs/VH 1/LG 3.1.29 ROLLS-ROYCE, LIMITED PRINT ROOM, 3 JAN 1929 | ||
| Scan227 | Fitting original long duration camshafts to 'F' Type Engine No. 113. | ||
| View original record | +9003 BY/Cgh9/G.14.2.29. EP. c. Bft. c. Hs. c. Mr. Smithdale. c. BY/EL. ---------------- 'F' TYPE ENGINE NO. 113 - CAMSHAFTS. ----------------------------------- With reference to the long duration… | ||
| Scan228 | Tests conducted on nitro-alloy crankshafts and camshafts in a development engine. | ||
| View original record | X4003. To R. from Hs/VH. c. SG. c. Wor. Rg. c. E. Hy. Hs/VHll/ADL2.11.29. TESTS WITH NITRO-ALLOY PARTS. +3865. X4003. CRANKSHAFT. We have a nitro-alloy crankshaft fitted to one of our development… | ||