Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Equalization of oil in the crank chamber of engine No. 6. | ||
| View original record | Engines. X740 1400 Equalizing oil in crank chamber. No. 6. engine found to equalize very well without any extra arrangements. Oil ducts as cast in bottom half made so as not to work, as they caused… | ||
| Scan002 | Test report on the performance of Price's Heavy Gas engine oil, noting no improvement in consumption but easier cold starts. | ||
| View original record | ENGINE LUBRICATION Made a test on engine with Price's Heavy Gas engine oil on the road and on the dynamometer for the purpose of noting whether the consumption was was improved by doing so. No… | ||
| Scan003 | Experiment notes on engine cylinder lubrication issues and piston swapping. | ||
| View original record | R.R. 148 (20 m) (C. 898. 26.2.09) G. 6740. Lubrication X740 1400 May 4/09 ENGINE LUBRICATION re experiment on oiling cylinders (a) Found No. 5 Cylinder oiled up (b) Moved piston from No.5 to No. 6… | ||
| Scan004 | Test report on chassis 1136 engine lubrication and power performance following modifications to pistons and oil pipes. | ||
| View original record | R.R 148 (20 H) (F 148. 17.6.09) G. 103. X.140 1400 1136 chassis without annulus recessed round the pistons Engine sufficiently lubricated for running at 1500 revs on dynamometer but no smoke at 660… | ||
| Scan005 | Investigation into an oil leak from the crank chamber joints, resolved by fitting a paper joint. | ||
| View original record | Oil leak crank chamber 1400 Found oil leaked thro. crank chamber joints, plain machined fittings, fixed paper joint, which stopped leak, commenced 60526. X740 | ||
| Scan006 | Notes on engine oil pressure issues and diagnostics for two specific cases. | ||
| View original record | Pressure of oil 60550 - set pump + suction pipes good. No fibres in liners but good fit. Engine new pressure set 10 lbs did not vary between 10 + 12 lbs at any speed. Sman well oil hot or cold.… | ||
| Scan007 | Note on crank chamber fluid levels and consumption for the 1907 No. 6 Cars. | ||
| View original record | 1907 No 6 Cars X740 1400 Crank chamber level. up to overflow holes. -> 3/4 to 1 pint. Takes [strikethrough]2 1/2[/strikethrough] pints for 50 miles. | ||
| Scan008 | Engine lubrication tests and results. | ||
| View original record | Engine Lubrication X740 1400 714 - found insufficient oil for full power (cat & fiddle) even at 20 lbs. Gudgeon pins made .002 slack with 1/2 groove 3/16 x .010". but too much oil running past engine… | ||
| Scan009 | Note with a diagram detailing oil levels, gradients, and clearances in crank chambers for a specific test. | ||
| View original record | Y740 1400 Oil in crank chambers. (Test on 60547). up to overflow. 7 pints. plug projects 5/8" this crank come. Gradient. [Diagram with dimensions] l" 3 1/2" hole. < 6 1/2" > > 1 1/4" > 2 3/4" Big end… | ||
| Scan010 | Notes on an oil test concerning the quantity of oil required in the crank chamber. | ||
| View original record | Oil test X740 60545 - Quantity, 1400 Quantity of oil required in crank chamber. To fill to overflow (level) requires pressure constant until 3 to 4 max pints are withdrawn. No matter at what pressure… | ||
| Scan011 | Tests concerning the quantity of oil in the crank chamber. | ||
| View original record | X740 1400 Quantity of oil in crank chamber 1907 - Mob. Shat. Tested on 60545. Up to overflow 7? pints. see other card pressure constant at from 5 to 15 lbs. varies 2 lbs only. high & low speed.… | ||
| Scan012 | Notes on a lubrication issue where increasing gudgeon pin length cured piston knocks. | ||
| View original record | H.R. 40(20)d H. 100/15.09 R.P. 4941. X700 1400 Lubrication - on 110 J. Gudgeon pins collecting flat increased in length from 1 1/4 to 1 7/8 - two circular grooves round end of bush to suit. Cured… | ||
| Scan013 | Notes on lubrication quantities and capacities for a starter motor. | ||
| View original record | R.R. 148 (20 H) (P 548.10.10.10) G 1130. 8740 1400 ~~2300~~ Lubrication - Quarts in base starter when a 1 & 1/4 cap. by EP & Blachshon Oct. 1910. up to overflow - 3 quarts. Pressure fails at 2 quarts.… | ||
| Scan014 | Engine oil temperature readings after a period of good running. | ||
| View original record | Engine:- Engine oil temperature. X740 3500 21/7/11 After good running. Temp: of water 90°c Oil in base 118°c, at 3 way union i.e. entering crank shaft 38°c. Temp: of water 100°c. Oil in base 57°c, at… | ||
| Scan015 | Test record comparing the performance of Wells cylinder oil against Prices C oil in car number 60526. | ||
| View original record | 7740 1400 Filled up No 6 car 60526 with Wells cylinder oil (strait from barrel, see sample). Run in the yard for about 1 hr. & also about 5 miles on road. Oil taken out (see sample) very dirty, &… | ||
| Scan016 | Note on a new lubrication method for engine bearings and the results after a 250-mile test. | ||
| View original record | New method of lubrication also tested on this engine. Ducts to left side of crank-case feeding main bearings & 2 main middle bearings. Pumps feeds small bearings. After 250 mile run brasses found to… | ||
| Scan017 | Paper by G. H. Baillie discussing the best systems of lubrication for internal combustion engines. | ||
| View original record | CONFIDENTIAL UNTIL READ. The Royal Automobile Club. The Best System of Lubrication for Internal Combustion Engines.* By G. H. BAILLIE. SYSTEMS of lubrication may be divided into two broad classes :—… | ||
| Scan018 | Technical discussion on the merits of different engine lubrication systems. | ||
| View original record | to avoid the expense of a pump. It could be used without sight feeds with very little extra trouble to the driver, and is a very safe system. Another good way of ascertaining the oil level is to have… | ||
| Scan019 | Addressed to Mr. Johnson comparing the Daimler lubrication system to the Rolls-Royce system, detailing its inferiority. | ||
| View original record | 12th October 1910. Mr. Johnson. Re Daimler Lubrication. This system is an advance on the 1910 system inasmuch that the connecting rods and cylinder walls receive more oil as the throttle is opened,… | ||
| Scan020 | Continued discussion on Daimler lubrication, outlining a theory for the cause of smoking in sleeve valve engines. | ||
| View original record | Daimler lubrication. (Contd) (2) efficiently as oil throwers at fairly low speeds. I do not think the system will cure the trouble of smoking, because I consider this a fundamental difficulty with all… | ||
| Scan021 | To Mr. Platford regarding a report on engine oiling systems and a modification for lubricating little end pins. | ||
| View original record | Y- 23rd February 1911 Lubrication of Engines. Mr. Platford. 23/2/11 R22/D23211 Herewith is copy of my memorandum R22/D23211 to Mr. Johnson. I want you to get out a careful report on the present oiling… | ||
| Scan022 | Engine lubrication tests on a dynamometer without an extra oiling device, comparing performance to Metallurgique cars. | ||
| View original record | Y. 23rd February 1911 Lubrication of engines. 1195 (Terry) C.J. 23/2/11 R22/D23211 We are now running the cars continuously on the dynamometer at full power without the extra oiling device. If they… | ||
| Scan023 | Lubrication failure risk and the negative effects of adding excess oil to pistons. | ||
| View original record | (2) be wrongly handled. Undoubtedly, under the conditions of more continuous oil, there should be less risk of lubrication failing when running with the throttle partly open. I dare not add any more… | ||
| Scan024 | Letter discussing engine lubrication, piston fitting, and the influence of rings on gas-holding properties. | ||
| View original record | y 1st April 1911 Mr. Platford 31/3/11 R1/D1411 Referring to the lubrication of our engines, - as you know, I am in fav-our of more lubrication than we are at present getting. The actual fitting of the… | ||
| Scan025 | Testing and oiling of 'little ends' to prevent engine knocking. | ||
| View original record | 15th June 1911 Mr Nadin 15/6/11 R12/D15611 The oiling of the little ends should be tested until proved satisfactory and adopted as soon as possible so that should the little ends wear themselves to… | ||
| Scan026 | Request for a new drawing for a crankchamber tube as an experiment needs to be pushed forward without delay. | ||
| View original record | R.R. 235. (20 H) (W 746 21.8.11) G. 1800. REF. 42 (v1) 29th Sept. 1911. Mr. Swetnam 29-9-11 X740 The crankchamber which has been fitted with a tube having a flat milled on it is not in accordance with… | ||
| Scan027 | Meeting minutes discussing an oil retaining device for engine coupling joints and plate clutches. | ||
| View original record | 80th Meeting 21st Nov. 11. Re oil retaining device for engine coupling joints. Mr Wormald informed the Committee that the scheme instructed by Mr Bailey would be ready on Wednesday or Thursday, and he… | ||
| Scan028 | Committee notice regarding a patent for crankchamber lubrication in three-cylinder engines. | ||
| View original record | R.R. 235A (150 n) (XX. 140. 18.7.13) E.P. 4635. 20th Meeting Nov. 30th. '11 Patents. Mr Platford submitted for the information of the Committee notice of the following patent: Crankchamber… | ||
| Scan029 | Cover letter to Mr. Royce forwarding a memorandum from Mr. Platford to Mr. Johnson. | ||
| View original record | Rolls-Royce Limited Derby 13th June 1912 Dear Mr Royce, In accordance with Mr Johnson's instructions I have pleasure in sending to you the attached memorandum EP34/T12612 addressed by Mr Platford to… | ||
| Scan030 | Mysterious engine knock in the 1300 series due to slack in the little end brasses and a proposed solution. | ||
| View original record | C.J. 7/6/11 7th June 1911 R15/D7611 There has been considerable trouble with a mysterious knock principally in one of the engines of the 1300 series, which, after numerous experiments, Mr Hallam found… | ||
| Scan031 | Describing the lubrication method for a bearing and pin, including entry points and tolerances. | ||
| View original record | 14th June 1911 C.J. (2) of lubrication in the central portion of this bearing and will, therefore, be better able to fill the space should there be any. The sketch shows the lubrication entering at… | ||
| Scan032 | Drawing and note explaining the lubrication of a connecting rod pin. | ||
| View original record | PIPE. Looking from front of engine these holes will be on the side of the pin which has least pressure from the angle of connecting rod, the nearer the extremity of the bearing the less oil will… | ||
| Scan033 | What information to supply to the 'Automotor Journal' about patented chassis parts and lubrication systems. | ||
| View original record | R.R. 473 (100 M) (PP 12. 11.10.19) E.P. 2713. "Automotor Journal." ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 813 (Two Lines). 476, (4 Lines.) DEPARTMENTAL… | ||
| Scan034 | Request from 'The AUTO' motor journal for drawings and a description of the car's lubrication system for an article. | ||
| View original record | Telegraphic Address: "TRUDITUR, LONDON" Telephone: No 1828 GERRARD. The AUTO -MOTOR JOURNAL- "Yellow Cover" PUBLISHERS, ST. MARTINS PUBLISHING CO. LTD EDITORIAL DEPARTMENT. ALL COMMUNICATIONS SHOULD… | ||
| Scan035 | Meeting minutes discussing the testing of an oil retaining coupling and its interaction with the clutch mechanism. | ||
| View original record | 96th Meeting Re American Tour. Oil retaining coupling. Dec.8th.11. Mr Platford informed the Committee that he had this coupling on test, but in combination with the Ferodo clutch. This arrangement was… | ||
| Scan036 | Departmental memo advising against publishing details of patented engine lubrication due to the weakness of the patents. | ||
| View original record | R.R. 425 (100 H) (PP 12. 11.10.12) E.P. 2713. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 813 (Two Lines). 476, (4 Lines.) DEPARTMENTAL MEMO. This column is… | ||
| Scan037 | The second page of a departmental memo requesting further advice on a point. | ||
| View original record | R.R. 475 (100 H) (PP 12. 11.10.12) E.P. 1713. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 813 (Two Lines), 476, (4 Lines.) DEPARTMENTAL MEMO. This column is… | ||
| Scan038 | Departmental memo agreeing to the re-description of engine lubrication. | ||
| View original record | R.R. 476 (100 H) (LL 27. 27.7.12.) ROLLS-ROYCE LIMITED, 14-15, CONDUIT STREET, LONDON, W. TELEGRAMS: "ROLHEAD REG." LONDON. TELEPHONES: 1654. 1655. 1656 GERRARD. X740 CJ8/B131212. DEPARTMENTAL MEMO.… | ||
| Scan039 | Departmental memo regarding the decision not to publish details of patented lubrication schemes in the Automotor Journal. | ||
| View original record | ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (Four Lines). DEPARTMENTAL MEMO. This column is for Name of Person addressed. Mr DeLooze DATE. 16-12-12 Re… | ||
| Scan040 | Departmental memo discussing the strategy of not replying to the Automotor Journal until they send a reminder. | ||
| View original record | ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (Four Lines). DEPARTMENTAL MEMO. Describing of Engine Lubrication for Automotor Journal This column is for… | ||
| Scan041 | Meeting minutes approving the standardization of an oil-tight coupling between the gearbox and clutch. | ||
| View original record | 106th Meeting Dec 29th.11! X740 Re Oil tight coupling between/gear box & clutch. X738 Mr Platford reported that he had fitted this to a standard car and had run it a short distance; the coupling… | ||
| Scan042 | Copy of minute 8 from the 111th T.C. meeting discussing an oil pipe scheme for the 'Sluggard'. | ||
| View original record | Ref. 111(viii) X740 Copy of minute 8 of the 111th meeting of the T.C. Mr Swetnam. 19/1/12. TBB7/119112. Re Oil Pipe for Sluggard. Mr Swetnam submitted a scheme for fitting an auxiliary oil pipe to… | ||
| Scan043 | Typed page giving instruction to pass a matter for construction without committee submission. | ||
| View original record | ACR. C.D.H./H.R. 19.3.37. P.13.M (2) he should pass it for construction without submission to the Committee. | ||
| Scan044 | Requesting a car being tested in France be brought to England for extended mileage trials and examination. | ||
| View original record | ROLLS-ROYCE LIMITED, 14-15, CONDUIT STREET, LONDON, W. TELEGRAMS, "ROLHEAD," LONDON. TELEPHONES, 1654, 1655, 1656 GERRARD. DEPARTMENTAL MEMO. This column is for Name of Person addressed. Mr. Platford.… | ||
| Scan045 | Departmental memo regarding a big end bearing failure on experimental car 1649 due to a lack of oil. | ||
| View original record | R.R. 475 (50 H) (X 937. 18.3.12) E.P. 1493. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES. 813 (Two Lines). DEPARTMENTAL MEMO. This column is for Name of Person… | ||
| Scan046 | Departmental memo discussing faults with crankshaft bearings, the clutch, spring drive coupling, and front spring. | ||
| View original record | K.R. 475 (50 H) (X 737. 18.3.12) E P. 1493. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 813 (TWO LINES). DEPARTMENTAL MEMO. This column is for Name of Person… | ||
| Scan047 | Faults on a car, including a drawn-out eyelet and bent axle, and planning for its repair and testing. | ||
| View original record | ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 813 (Two Lines). DEPARTMENTAL MEMO. This column is for Name of Person addressed. DATE. the eyelet. drawn out. This… | ||
| Scan048 | Letter from F.H.R. to Claude Johnson regarding a big end bearing failure on an experimental car and suggestions for testing oil pressure. | ||
| View original record | T.C. On Warwald COPY. Beacon Hotel, Hindhead, Surrey 15th June 1912. Mr Claude Johnson from F.H.R. With reference to attached re experimental car (1849) from France. I am sorry to hear of the failure… | ||
| Scan049 | From F.H. Royce discussing issues with a clutch, front springs, and a potentially bent front axle. | ||
| View original record | (2) know our margin of safety. I am glad you have come to the same conclusion that I did about the clutch. An effort should be made to get the suggestions of Mr Barrington and myself tested. The front… | ||
| Scan050 | Letter from F.H.R. to Claude Johnson regarding a report on oil pressure issues and the fitting of engine bearings and liners. | ||
| View original record | R.R. 235 a (150 u) (V.V. 585 23.2.14) G. 2363. Copy. COPY. Beacon Hotel, Crowborough, Sussex. 18th June, 1912. Mr Claude Johnson from F.H.R. Mr Hallam's sheet which Mr Wormald has sent in is… | ||
| Scan051 | Departmental memo discussing a report on an extra oiling device for chassis 1414 (Sondheim). | ||
| View original record | R.R. 475 (100 H) (X 167. 22.5.12) E.P. 1898. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 813 (Two Lines). DEPARTMENTAL MEMO. This column is for Name of Person… | ||
| Scan052 | Departmental memo forwarding a driver's suggestion to supply ready-cut paper packings for the oil sump. | ||
| View original record | R.R 476 (100 H) (LL 27. 27.7.12.) ROLLS-ROYCE LIMITED, 14-15, CONDUIT STREET, LONDON, W. TELEGRAMS: "ROLHEAD REG." LONDON. TELEPHONES: 1654, 1655, 1656 GERRARD. DEPARTMENTAL MEMO. This column is for… | ||
| Scan053 | Departmental memo reporting a driver's habit of applying thick gear oil to tappet guides. | ||
| View original record | R.R. 476 (100 H) (L.L. 27. 27.7.12.) ROLLS-ROYCE LIMITED, 14-15, CONDUIT STREET, LONDON, W. TELEGRAMS: "ROLHEAD REG." LONDON. TELEPHONES: 1654, 1655, 1656 GERRARD. DEPARTMENTAL MEMO. This column is… | ||
| Scan054 | From F.H.R. requesting tests on the effect of raising oil pressure on crankshaft bearing wear. | ||
| View original record | V740 COPY. COPY. To Wor. for Mr Hives 12/12/13 Copy for J. Copy for E. R10/P 15.12.13. With reference to the question of the wear of crankshaft bearings, I shall be glad if when you have special time… | ||
| Scan055 | Suggesting a new paragraph for an instruction book regarding the use of extra oil when starting an engine in cold weather. | ||
| View original record | R.R. 65y. (100l) (XX.639. 30.10.13) E.P. 5294. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (Four Lines). Names and indicating letter. Initial of person… | ||
| Scan056 | Proposed amendment to an instruction book regarding the procedure for starting an engine with an extra oil valve. | ||
| View original record | R.R. 657. (100H) (VV. 240. 17.12.13) E.P. 5598. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (Four Lines). Names and Indicating letter. Initial of person… | ||
| Scan057 | Cover memo regarding engine lubrication, attaching a related document and requesting a reply. | ||
| View original record | R.R. 657. (100H) (V.V.400. 19.1.14) E.P. 5828. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (FOUR LINES). Names and Indicating letter. Initial of person… | ||
| Scan058 | Containing Mr Hives' disagreement with the procedure for using the extra oil valve during engine warm-up to prevent seizing. | ||
| View original record | Wor/Mcr2/L19214. Re Extra Oil Valve and Starting up Engine. Na/S. 19-2-14. In reply to your memo Na/S23/LG17214 re the above we give below Mr Hives remarks:- "I do not agree about depressing the… | ||
| Scan059 | Memo disagreeing with the procedure for depressing the extra oil valve during engine warm-up. | ||
| View original record | R.R. 657. (100H) (VV SS. 19.11.13) E.P. 5408. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (FOUR LINES). Names and Indicating letter. Initial of person… | ||
| Scan060 | Preference for Prices A Engine Oil for 'Le Canadel' and advice on gear oil stock. | ||
| View original record | R.R. 235A. (150 H) (V.V. 782 27.3.14) G. 0442. COPY. To Na. from R. Copy to Wor. Copy to J. R3/P 9. 4. 14. In future for Le Canadel I should prefer that we had Prices A Engine Oil. There is no need to… | ||
| Scan061 | Request for recommendations on modifying the point where the extra oil cuts in on standard cars. | ||
| View original record | R.R. 637. (100H) (VV 653. 9-3-14) & P. 6166. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (FOUR LINES). Names and Indicating letter. Initial of person… | ||
| Scan062 | Extract from a report on the Spanish Grand Prix, suggesting an increase in the oil overflow stand pipe height. | ||
| View original record | X. 740 Extract from Mr. Platford's report re Cars in Spanish Grand Prix - in X. 387. Oil in Engine. I think that the height of the stand pipe for the overflow can be increased .4" to advantage,… | ||
| Scan063 | Softness of front springs and issues with engine 58NA's rubber buffers and oil pressure. | ||
| View original record | R.R. 235A (150 H) (W.W. 315. 21-5-14) G. 0570. gg COPY. To Da. from R. Copy to J. Copy to Pd. Copy to Wdr. for EH.17614 Hy.17614 R11/P 11. 6. 14. It is rather generally agreed that our front springs… | ||
| Scan064 | Extract from a report from Spain discussing high engine oil temperatures and suggesting the use of an oil radiator. | ||
| View original record | R.R. 235a (150 H) (W.W. 276. 12-5-14) G. 6547. X740 Extract from Peat's report of June 3rd, 1914, sent from Spain. "Beg to suggest also, that the temperature of the lubricating oil has a large bearing… | ||
| Scan065 | The renewal of a patent for a lubrication system control device. | ||
| View original record | R.R. 657. (100li) (SA. 73. 16.12.14.) E.P. 7758. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (Four Lines). Names and Indicating letter. Initial of person… | ||
| Scan066 | Flaw in the extra oil system and proposing an improved automatic system linked to engine HP. | ||
| View original record | x740 Ref./W/Z/1.19215. Na. 19.2.15. Re Na/24/G15215. Although I do not consider the present system or working the extra oil is perfect I think it is preferable to working it automatically by the… | ||
| Scan067 | Vacuum-operated devices and extra oil systems for engine regulation. | ||
| View original record | -2- regulating valve the other side of the throttle would also avoid any leakage of air past the valve affecting the slow running of the engine. I consider that any automatic device worked by the… | ||
| Scan068 | Patent for lubricating systems in internal combustion engines, detailing issues with oil flow relative to throttle position. | ||
| View original record | C O P Y. COPY To Na. from R. Copy to J.H. 27.2.15 R1/IB24215. February 24th. 1915. Re Patent - Lubricating systems for Internal Combustion Engines. Na/S10/LG22215. With reference to the cylinder… | ||
| Scan069 | Lubrication apparatus dependent on induction pipe vacuum and its potential as an exclusive fitting for aero engines. | ||
| View original record | To Na. from R. 2. COPY. R1/IB24215. action the extra oil. The scheme that depends upon the vacuum in the induction pipe, and which supplies oil inversely proportionate to a vacuum in the induction… | ||
| Scan070 | Request for test results on the vacuum in the induction pipe for a patented engine lubricating system. | ||
| View original record | E. 557. (50M) (W.W. 948. 13.11.14.) E.P. 7561. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (FOUR LINES). U.W. Names and Indicating letter. / Initial of… | ||
| Scan071 | Questioning the effectiveness of an extra oiling system controlled by vacuum in the induction pipe. | ||
| View original record | R.I Wor/EHS/L2315. Re extra oiling controlled by the vacuum in the Induction Pipe. R/740 Na/S. 2.3.15. In reply to Mr Royce's memo R1/IB24215, I still do not understand or cannot appreciate the claims… | ||
| Scan072 | Report discussing low speed performance, air leaks through a valve and the potential use of a dashpot. | ||
| View original record | R.I Wor/Wor/EHS/L.2315. -2- pottering along at low speeds, also we still have the danger of air leaking into the pipe through the valve. I think the dashpot action is excellent and consider we might… | ||
| Scan073 | Request for a copy of a report on vacuum levels in induction pipes for internal combustion engine lubricating systems. | ||
| View original record | ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (Four Lines). F.R. (red stamp) Names and Indicating letter. Initial of person addressed. A Mr. ADAMS By Mr.… | ||
| Scan074 | Extract detailing oil circulation and filter issues on a 200 HP Aero Engine. | ||
| View original record | Extract from Wor/CA/19/L/8015 on 200 HP Aero Engine X740 We find that the oil which is fed into the camshaft casing cannot return into the crankcase down the camshaft drives when the engine is… | ||
| Scan075 | Critiquing a system of extra oiling controlled by vacuum in the induction pipe. | ||
| View original record | Wor/EHS/L12315. OC 740 . Re Extra Oiling controlled by vacuum in Induction Pipe. Na/Mr Southern. 12.3.15. In reply to Mr Royce's memo R1/IB24215, I still cannot appreciate the claims for this system… | ||
| Scan076 | Technical memorandum discussing the dash pot action, engine speed, and oil system of an aero engine. | ||
| View original record | -2- an aero engine where there is not the same range of speed. I appreciate the dash pot action and think it is excellent. I consider we might fit it to the present system. It will be noticed that on… | ||
| Scan077 | Graph showing when extra oil would work if controlled by vacuum, plotted against throttle opening. | ||
| View original record | Inches of Mercury 2000 1800 1600 1400 1200 Extra Oil 1000 800 Only slots open 600 400 Slots 1" 2" 3" 4" 5" 6" 7" Throttle opening Curve showing when extra oil would be working if it was controlled by… | ||
| Scan078 | Enclosing a report from Sydney about overoiling engines in Australia, requesting comments. | ||
| View original record | R.R. Form (300 H) (S.A. 353. 4-3-15) G. 6970. Australia. Re Overoiling Engines. 22140 EP. E. WOR/CP5/029315. 29/3/15. I enclose herewith a copy of a report from Peat dated Sydney - 14/2/15, and shall… | ||
| Scan079 | Technical note on engine overoiling, proposing a different method of feeding oil to the crankshaft to ensure proper lubrication. | ||
| View original record | EXTRACT OF PEAT'S LETTER R.R.-93940 (S.A. 383. 4-3-15) C. 0970. DATED 14/2/15. "Thinking over the question of overoiling engines it occurs to me that a strong case can be made out for a different… | ||
| Scan080 | Uneven engine cylinder lubrication, highlighting over-oiling at low speeds and under-oiling at high speeds. | ||
| View original record | R.R. 235A (800 H) (S.A. 353. 4-9-15) G. 6970. -2- other bearings which intervene between them and their main oil supply pipe. In old engine with only slightly worn bearings it is frequently a job of… | ||
| Scan081 | Letter discussing over-oiling in engines, specifically addressing the effect of centrifugal force on oil flow within a crank web. | ||
| View original record | Wor/Mcrl/L7415. EC 140 Re over-oiling Engines. Mr Peat. 7.4.15. We have received your report of 14/2/15 re the above. I have discussed this question with Mr Hives and he appears to be rather of the… | ||
| Scan082 | Report page discussing crankshaft oil leaks and methods to tackle piston over-oiling. | ||
| View original record | -2- centrifugal force at all. When we refer to the crankshaft of our engine we see the analogy is not quite correct because there is a possibility of leak from the passage C, and of course if this… | ||
| Scan083 | Report page detailing the effectiveness of a scheme in preventing over-oiling trouble. | ||
| View original record | Wor/Mcr1/1.7415. -3- clearance being reduced, and this scheme has been wonderfully effective in preventing over-oiling trouble. Mcr. | ||
| Scan084 | Cover letter for Mr. Harrison's 2,000-mile vehicle report. | ||
| View original record | X740 Mr. Haldenby. [struck through] Mr. Hives. EP26/T/W21715. I attach herewith copy of Mr. Harrison's report on this car. This is on completion of 2,000 miles. EP. [Watermark text] DICKINSON BOND… | ||
| Scan085 | Copy of a letter from a customer, J.V. Harrison, expressing satisfaction with his car's performance and service received. | ||
| View original record | R.R. 235 a (500 H) (S.A. 620. 25-5-15) G. 1064 16.7.15. COPY OF LETTER RECEIVED FROM J.V.HARRISON, ESQ. - - - - - - - - - - Your man, Mr. Waldron, is leaving me to-morrow, and I want to express to you… | ||
| Scan086 | Issues with the lubrication of the rear axle brake mechanism. | ||
| View original record | COPY. R. R. 283 A (100) (T) S.Y 846 6-S-19 G. 248 Bn. from EP. c. to H. c. to OY. c. to Mr. Walker. C.R. c. to BY. c. to Hm. X740 EP14/F29.1.20. X.3458 RE. LUBRICATION OF REAR AXLE BRAKE MECHANISM.… | ||
| Scan087 | Suggesting an improvement to the oil feed for engine gears by moving the feed position. | ||
| View original record | Br. from EP. c. to HS. x740 A.T. EP12/F26.8.20. RE. OIL FEED TO ENGINE GEARS. I am very keen on this improvement being applied to the cars as soon as ever possible, and suggest that until such time as… | ||
| Scan088 | Tests for extra lubrication on cars for America, expressing doubt about removing it. | ||
| View original record | Extract from Hs7/LG6.7.21. X740 RE CARS FOR AMERICA. X.3719. X.4355 X.726 Item 12. Extra Lubrication. We have been carrying out tests in conjunction with this and the results show that we could do… | ||
| Scan089 | Extract about a proposal to remove the extra lubrication scheme for cars destined for America, following issues with seizing pistons. | ||
| View original record | Extract from EP/Thn6/H6.7.21. X740 X.4355 X.786 X.3719. RE CARS FOR AMERICA. Item 12. Extra Lubrication. Mr. Platford reports that Springfield want to do away entirely with the extra oil scheme as… | ||
| Scan090 | Scheme for direct lubrication of the sphere by circulating oil from the gearbox. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. X740 Oy3-W-7723 July 7, 1923. PERSONAL To: Mr. E. W. Hives From: Mr. Olley Re Lubrication of Sphere On 102-CE, we have rigged up a scheme for direct… | ||
| Scan091 | Gearbox lubrication tests, detailing performance over mileage and discussing potential issues and design changes. | ||
| View original record | Oy3-W-7723 -2- The results after 1000 miles were perfect lubrication of the joint and no fall in gearbox oil level. I will report the results after 2000 miles before this letter leaves. A possible… | ||
| Scan092 | Letter to Claude Johnson regarding the lubrication of a sphere, outlining objections to using a pressure gun due to the likely use of incorrect grease and potential for grit contamination. | ||
| View original record | Oy9-W-72823 July 28, 1923. Mr. Claude Johnson, Rolls-Royce, Limited, London, England. (Copy for attention of Mr. Royce) Mr. Platford) Mr. Hives ✓) Dear Sir: Re Lubrication of Sphere COPY With… | ||
| Scan093 | Issues with lubrication, comparing the present scheme with a proposed continuous lubrication system. | ||
| View original record | Oyg/H-R-7:R22 -2- Very few chauffeurs take the trouble to clean these nipples before attaching the gun, and if dust covers are rovided they are immediately lost the first time the car is lubricated.… | ||
| Scan094 | Accessibility and positioning of various lubricators on component E.A.C.-111. | ||
| View original record | To BY. from Hs. c. to Da. [Handwritten] X740 Hs1/LG30.11.23. ACCESSIBILITY OF LUBRICATORS [Handwritten] X740 ON E.A.C.-111. [Handwritten] V9770 Pivot pins - lubricators will have to be at right… | ||
| Scan095 | Recommendation for chassis engine oil change intervals. | ||
| View original record | x740 Mr. Walker. c. Mr. de Pont. c. Mr. c. Hs. LUBRICATION. For the chassis engine, in future, we recommend that we change the oil in the crankcase as follows:- After First 500 miles. After Second 500… | ||
| Scan096 | Revising the recommended oil change intervals for the chassis engine. | ||
| View original record | X740 Hs. EP. Mr. Walker. BY2/H. 2. 6. 24. C.E.D. recently wrote, in connection with lubrication, a memo BY8/H. 6. 5. 24. reading as follows:- "For the chassis engine, in future, we recommend "th`t we… | ||
| Scan097 | The lubrication of a sphere and forwarding related documents. | ||
| View original record | To R. from BJ. Copies to WR HS. Re Lubrication of Sphere. BJ/Py1S/U10.8.23. I attach a copy of Cy9/W72823 of July 28th, received here this morning. Will R. please note that the "Contemplated… | ||
| Scan098 | Lubrication instructions for 20-HP and 40/50HP cars. | ||
| View original record | BY. c. Hs. c. Mr. Walker S.O. X740 EP1/H20.6.24. re. Lubrication. With reference to your BY2/H2.6.24, we strongly recommend that your instructions BY8/H6.5.24 should stand good for 20-HP cars, but… | ||
| Scan099 | Letter discussing various theories on engine wear and the effectiveness of an extra oil system to prevent cold-knocking. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. 4740 Oy3-E-10725 October 7th, 1925. Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. Dear Mr. Hives: Re Extra Oil Just now the industry is all heated… | ||
| Scan100 | Implementation of an extra oil scheme for the 'Phantom' car. | ||
| View original record | Oy3-E-10725 -2- October 7th, 1925. We therefore believe it will be necessary to fit an extra oil scheme on our "Phantom" car, operating this from the pilot jet only (not from the accelerator). Have… | ||
| Scan101 | Design of a vent pipe to prevent oil passing from the crankcase to the cylinder. | ||
| View original record | To C.J. from Hs. +740 Hs8/LG13.11.25. CJ3/E5.11.25. Percy F. Chaplin Esq. +8980 In the design of the vent pipe between the crankcase and carburetter, precautions are taken to prevent oil making its… | ||
| Scan102 | Engineering committee meeting report on engine lubrication and piston issues. | ||
| View original record | Oy1-E-31026 March 10th, 1926 To: Mr. Nadin Mr. Bagnall Mr. Hulley Mr. Caswell Mr. Moon - Mr. Beaver Mr. Ross Mr. Burton Mr. Southern From: Mr. Olley ENGINEERING COMMITTEE Report of Meeting of March… | ||
| Scan103 | Engine performance issues including wristpin fits, city driving complaints, and oil suitability. | ||
| View original record | -2- 2. Wristpin fits. Present very tight wristpins are used here and at Derby successfully. Scoring on the wristpin diameter is not general. Seizure is still on the 45° line where it has always been.… | ||
| Scan104 | Engine adjustments relating to pilot jets, oil pressure, and extra oil supply. | ||
| View original record | Oy1-E-31026 -3- March 10, 1926 5. Engines consequently cannot be made to knock while the pilot jet and extra oil is in operation. Without going so far as to advocate prolonged use of the pilot jet… | ||
| Scan105 | The factors controlling overoiling on Phantom engines compared to Silver Ghost engines. | ||
| View original record | To R. from Hs/ACL. c. to BJ. RG. c. to E. DA. c. to SY. WoP. c. to EP. Hm. +740 Hs/ACL1/LG4.5.26. FACTORS CONTROLLING OVEROILING ON PHANTOM ENGINES. +8980 It is general experience that the Phantom… | ||
| Scan106 | Report analyzing oil consumption in relation to oil flow through bearings, with comparative data for Silver Ghost and Phantom cars. | ||
| View original record | contd :- -2- consumed will be influenced by the amount supplied to the walls. The following curve supports this supposition and shews how the consumption of this particular Silver Ghost increases with… | ||
| Scan107 | Comparison of oil consumption and pressure between the Silver Ghost and Phantom models, attributing differences to bearing clearances. | ||
| View original record | contd :- -3- the one case. If however we plot these consumptions on an oil pressure base we immediately notice a marked difference between the two curves - as shown here. For the Silver Ghost a higher… | ||
| Scan108 | Comparison of oil flow between the Silver Ghost and Phantom models and the methods for reducing excessive oil flow. | ||
| View original record | contd : -4- feeds has proved to be a definite advantage when the initial oil flow is excessive. The average Silver Ghost with 20 to 25 lbs/sq.in. pressure at 1000 r.p.m. gives an oil flow of about .70… | ||
| Scan109 | Engine testing results, focusing on oil flow, piston lubrication, and the effectiveness of 'L' section piston rings. | ||
| View original record | contd :- -5- This engine has been tested at full load 2750 r.p.m. on the test bench and ran perfectly well without any signs of insufficient oil to pistons. When shut down it was quite free to turn… | ||
| Scan110 | Summary of findings on engine oil consumption, exhaust smoke, and potential solutions. | ||
| View original record | contd :- -6- oiling tendency and in the majority of cases they have been found to actually increase the consumption due to the increased suction past the baffles as the piston moves towards the top of… | ||
| Scan111 | High oil consumption in the Phantom engine, attributing the issue to the fit of bearings and piston rings. | ||
| View original record | contd :- -7- to 3 pts/min. at 2500 r.p.m. This engine was fitted with piston rings similar to Silver Ghost - not 'L' shaped rings. Therefore in general we can say that high oil con-sumption on the… | ||
| Scan112 | Overoiling issue on PII S pistons and a potential solution. | ||
| View original record | Rm. r 740. Pistons Overoiling on PII S Herewith HCB July 2. & B'tu July 3. It is rather alarming that "overoiling" has already shown up on PII S. It is just possible this may have been partly due to… | ||
| Scan113 | Issue of over-oiling in English-built Phantom II chassis and the effectiveness of new piston rings and bleeder holes. | ||
| View original record | Long Island City, N. Y. July 2, 1930 To: Mr. Burton Copy to Mr. Olley Mr. Soutter From: Mr. Beaver Phantom II - English Built There have come into us at Long Island Service Station two or three… | ||
| Scan114 | Piston oil consumption improvements and the potential contributing factors. | ||
| View original record | Btn-3 July 8, 1930. To: Mr. Beaver From: Mr. Burton Cc- Mr. Soutter Mr. Olley PISTONS Reference your memo of July 2nd, I have not written Mr. Olley on this subject since April 24th last when I sent… | ||
| Scan115 | Fitting Perfect Circle piston rings and drilling holes to address overoiling issues. | ||
| View original record | - 2 - The "stunt" of drilling holes behind the lower ring is not a new one - it has been used in this country and in Equrope for many years past and it is a wonder to me that Rolls Royce have never… | ||
| Scan116 | New scheme to prevent over-oiling during slow running by fitting improved Asbestos washers. | ||
| View original record | COPY. Hd. From Hs/Rn. For Depot Sheet. Hs/Rn.2/MJ.30.8.30. X.5060. X.7060. X.740. OVER-OILING WHEN SLOW RUNNING. -------------------------------- It is common knowledge that if the valve guide washers… | ||
| Scan117 | Dimensional changes to channel scraper rings to resolve an overoiling problem on Phantom II and 20/25HP chassis. | ||
| View original record | x740 By c` Hs. c` Wks. c` Secty from Mr. Mx12/T7.1.31. OVEROILING re Phantom II and 20/25HP. We experience trouble with overoiling on both Phantom II and 20/25HP Chassis, more particularly on the… | ||
| Scan118 | Page 2 of a letter from a customer, Stanley Johnson, detailing ongoing engine trouble and contrasting it with another vehicle. | ||
| View original record | -2- quite easily distinguished by a novice. I am willing to run it still under present conditions, but from past experience I think another 500 miles will be all I can do. I understand you do not know… | ||
| Scan119 | Experiment card to determine the standard for piston rings, comparing plain versus double-ring types. | ||
| View original record | X741 EXPERIMENT CARD To... N. Barrington Date issued...13/6/10 Job - Settle standard re piston rings - i.e. plain or "double-ring" Remarks - 1200 + 1201 now double Initials RB | ||
| Scan120 | Departmental memo regarding a procedure to fix sticking piston rings using parrafin. | ||
| View original record | R.R.'473 (100 H) (X 896. 3.5.12) E.P 1780. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 813 (Two Lines). DEPARTMENTAL MEMO. Name of Person addressed: Mr… | ||
| Scan121 | Departmental memo from E.P. suggesting a point be brought before other departments of the Company. | ||
| View original record | S.R.' 475 (100 H) (X 896. 3-5-12) E.P 1780. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 813 (TWO LINES). DEPARTMENTAL MEMO. This column is for Name of Person… | ||
| Scan122 | Article from 'The Autocar' magazine discussing the design, manufacture, and efficiency of different types of piston rings. | ||
| View original record | R.R. 235a THE AUTOCAR. September 7th, 1912. 437 The Design of Piston Rings. OCH/H The Best Form of Construction for the Highest Engine Efficiency. AFTER asking the owner of a car how his new purchase… | ||
| Scan123 | Newspaper clipping detailing a pinned piston ring design and a custom wire tool for removal. | ||
| View original record | R.R. 235a (150 H) (S.A. 501. 19-2-15) G. 0850. [Newspaper Clipping] The Autocar. 347 PISTON RINGS. 21st Sept. 1912 [18599.]—I enclose sketch (fig. 1) of another type of ring than those referred to in… | ||
| Scan124 | Potential fault with a piston ring pin in Lord Portarlington's car, number 2107. | ||
| View original record | From F.H.R. Copies sent to: Mr. Johnson, Mr. Wormald, Mr. Platford, Mr. Nadin. Re Lord Portarlington's car, 2107. If this fault is due to a loose piston ring pin it may be that the ring is tight in… | ||
| Scan125 | Chassis 2301, detailing the special double piston rings with a new locking device. | ||
| View original record | AW/S/15/L22413 X741 April 22nd. 1913 Report on Chassis 2301 PISTONS. X.293 The pistons on this engine are fitted with the special double rings which have Mr Royce's new locking device, in the shape of… | ||
| Scan126 | Works order memo regarding production cards and instruction sheets for Piston Rings. | ||
| View original record | R R. 235a (150 m.) (PP. 958. 30.4.13) E.P. 4141. X741 COMPLETED. Wor/SM2/L24513 Re Piston Rings - X.203- Mr Matthews 45. 25-4-13 We attach herewith one production card for general arrangement of the… | ||
| Scan127 | Brake leverage, piston design, engine rings, and balance weights for a new car series. | ||
| View original record | X741 COPY. R5/B5.5.13. Sheet 2. *293 It was unnecessary resistance to the application of the brake and somewhat misleading in adjusting the brakes- with this removed I think that we can do with less… | ||
| Scan128 | Remark regarding the production of pip locking piston rings for pistons X.294. | ||
| View original record | x741 Rec. 10-6-13. Piston Rings. (Pip Locking) PISTONS. X.294. F.H.R's remarks re AW/SM15/L22413. "Going well, do not think we can do better than these, make tools for quantity, perhaps G&B slotter… | ||
| Scan129 | Adoption of parallel piston rings for aero and car engines. | ||
| View original record | To Na. from R. Copy to J. " " E. " Wor. for EH. -9815 R6/IB312114. 31st. December, 1914. COPY Re Piston Rings. Na1/S241214. With reference to Piston Rings, I quite agree it is a good thing to try the… | ||
| Scan130 | Query regarding the best type of piston rings to use. | ||
| View original record | R.R. 235a (200 H) (S.A. 442. 31-3-15) G. 1001. [Faded watermark text: DICKINSON & CO MADE AT CROXLEY] [Typed text snippet:] I shall also be glad of Mr Platford's and Mr Hives' confirmation as to which… | ||
| Scan131 | Extract concerning a 10,000-mile bench test for piston rings. | ||
| View original record | X. 741 Extract from Arm. 19718/185.14 in X.824. Piston Rings E 1436. 10000 mile bench test | ||
| Scan132 | Alteration to a piston ring drawing to specify clearance for shop practice. | ||
| View original record | R.R. 235a (150 H) (V.V. 681 12-5-14) G. 0414. RE PISTON RINGS. X.741. On 21. 7. 14. the piston ring drawing was altered to bring same into conformity with shop practice, namely, 2 to 3,000… | ||
| Scan133 | Suitability of engine oil for the Australian climate, based on a report. | ||
| View original record | 740 Wor to Mcr. GJ3/13.10.15. Re Australia. -------- I send you herewith an extract of Peat's report dated 27/8/15. This information may be useful to you when considering the suitability of oils for… | ||
| Scan134 | Letter from L.C. Harvey regarding the supply and testing of 'Wedgerite' piston rings. | ||
| View original record | TELEPHONE: VICTORIA 4280. TELEGRAMS: "FUELECON.PHONE.LONDON". WESTERN UNION CODE. x741 L. C. HARVEY 25, VICTORIA STREET, WESTMINSTER. LONDON. S. W. 1. REF. { Yours BY7-P18321. Mine LCH/KFE 23rd March… | ||
| Scan135 | Advertisement for Wedgerite Piston Rings which expand in width as well as in diameter. | ||
| View original record | WEDGERITE · PISTON · RINGS EXPAND IN WIDTH AS WELL AS IN DIAMETER Image of Piston: WedgeRite PISTON RINGS Expand in Width and Diameter TRADE MARK REGISTERED PISTON RINGS are metal packing used to… | ||
| Scan136 | Retail price list and promotional leaflet for WedgeRite Piston Rings, including a diagram of its function. | ||
| View original record | Left Panel: WedgeRite PISTON RINGS Expand in Width and Diameter RETAIL PRICE LIST DIAM. | 5/32 in. width | 3/16 in. width | 1/4 in. width | 5/16 in. width and over 2 5/8 | $1.75 | $1.75 2 3/4 | 1.75 |… | ||
| Scan137 | Letter from supplier Morris, Russell about a new patented scraper piston ring. | ||
| View original record | ADRESSE TÉLÉGRAPHIQUE LUMINOUSLY-PARIS EXPORTATION - IMPORTATION SOCIÉTÉ ANONYME MORRIS, RUSSELL. (AU CAPITAL DE 250.000 FRANCS) THE LARGEST HOUSE IN EUROPE FOR ACCESSORIES FOR FORD AND OTHER AMERICAN… | ||
| Scan138 | Letter from Wellworthy Ltd. to the Technical Dept. regarding their patented piston rings, enclosing a small pamphlet and a newspaper clipping. | ||
| View original record | Extract from "The Light Car and Cycle Car." Oct, 28th, 1921. WHAT WAS THE SECRET of the TALBOT-DARRACQS? How it was possible for a 10 h.p. Engine to maintain 90 m.p.h. over a distance of 200 miles.… | ||
| Scan139 | Advertisement for Wellworthy Universal Radially Direct Pressure Piston Rings. | ||
| View original record | processes in the trade so that the question of line contact was more or less overcome, and WELLWORTHY produced large quantities of rings that for parallel bearing were all that could be desired.… | ||
| Scan140 | From Wellworthy Limited detailing the importance, manufacturing challenges, and development of the piston ring. | ||
| View original record | WELLWORTHY LIMITED THE PISTON RING is one of the vitally important members of the internal combustion engine, or of any other mechanism in which a gas-tight piston is used. Consider its function: it… | ||
| Scan141 | New method from the American division for dealing with piston ring stops on the 40/50 chassis. | ||
| View original record | To EP. from E. c. to Hs. X741 E2/H.15.9.22. PISTON RING STOPS 40/50 CHASSIS. X 3666 X741 While you were at WW. with Mr. Hives we understood that RR. America had some new way of dealing with the… | ||
| Scan142 | Springfield plant's decision to stop pinning pistons, contrasting it with the standard Derby practice. | ||
| View original record | To B.J. from R. c. to C.J. Hs. Da. c. to EY. EP. OY. X741 R3/M28.11.22. RE. AMERICAN PRACTICE. X.2748 X.3665 X.741. We learn from EP. that Springfield have ceased to pin the pistons. It has been our… | ||
| Scan143 | The American practice of fixing piston ring stops to resolve over-oiling issues. | ||
| View original record | X741 Row...son.P. G.Hd. c. SJ. c. Bye c. Hs. Genl. EP5/H29.12.22. RE. AMERICAN PRACTICE.-PISTON RING STOPS. X741 x8666 With reference to your R3/H28.11.22, Springfield are now fixing piston ring stops… | ||
| Scan144 | Springfield's return to the standard system for pinning piston rings and demanding an inquiry into the unauthorized deviation. | ||
| View original record | To EP. from R. c. to CJ. BJ. c. to OY. Hs. BY. X741 R1/M2.1.23. RE. PISTON RING STOPS X.741. X.3666. I was very please to hear that Springfield had returned to our standard system of pinning the… | ||
| Scan145 | Letter discussing the trial of a special piston ring for the 40/50 chassis, manufactured by Clews Peterson & Co. | ||
| View original record | HS. X741 BY1-P5.4.23. 40/50 CHASSIS. PISTON RINGS. I am sending you herewith a special piston ring manufactured by Messrs. Clews Peterson & Co Blackburn Rd. West Hampstead, London.N.W.6. I thought… | ||
| Scan146 | Customer complaint letter detailing a recurring ring trouble issue and extensive repair history for Chassis No. 23-PB. | ||
| View original record | COPY. BEARSTED HOUSE, NR. MAIDSTONE. August 30th. 1923. Messrs. Rolls-Royce Ltd., DERBY. Repairs Dept. Dear Sirs, Chassis No. 23-PB. This has now done about 850 miles since you fitted new cylinders… | ||
| Scan147 | Piston ring knocks on pre-war chassis and the compatibility of pre-war pistons with post-war rings. | ||
| View original record | Hm/HRC. c.c. BY! c. Hs. X741 EP8/H4.9.23. re. Piston Ring Knocks - Pre-War Chassis. With reference to your Hm/NRC1/D4.9.23, I cannot see any harm in using the pre-war type cast-iron pistons with the… | ||
| Scan148 | Experiments and solutions for piston ring knock on a pre-war chassis. | ||
| View original record | 4741 BY. Hs. EP. Hm/NRC1/D4.9.23. Piston Ring Knock. - Pre-War Chassis. Attached is a copy of letter from Mr. Stanley Johnson, owner of 23-PB. The following experiments are in hand :- (a). Aluminium… | ||
| Scan149 | French language bulletin on piston modifications for the installation of R.H. oil control rings, with diagrams and a table of dimensions. | ||
| View original record | — VUE D'ENSEMBLE — Segts ORDINAIRES Segt de REMPLISSAGE Segt R.H. GORGE D'HUILE TROUS de 3 PISTON COUPE C.D. TROUS de 3 — FIGURE No I — SEGMENT FONTE B SEGMENT R.H. A GORGE d'HUILE TROUS de 3 45° —… | ||
| Scan150 | Proposing experiments to investigate and resolve piston ring knock issues. | ||
| View original record | To BY. Hs. EP. X741 Hm4/W5.9.23. Re Piston Ring Knocks. Further to our Hm/NRC1/D4.9.23, we now propose to carry out the following experiments on a test bed kindly loaned by EP. fars. (1). Run an… | ||
| Scan151 | Experiments with post-war piston rings to resolve ring clap issues on pre-war pistons. | ||
| View original record | To BY. From Hm. " Hs. 1741 Hm11/W24.9.23. Re Post-war Piston Rings on pre-war Pistons. Further to Hm/NRC1/D4.9.23. Hm4/W5.9.23. In order to overcome piston ring claps of which we get a fair number of… | ||
| Scan152 | The incompatibility of post-war aluminium pistons with pre-war connecting rods to cure piston ring clap for Chassis 41-NA. | ||
| View original record | C O P Y. - for Hs. X741 To Bt. from Hm. C. to BJ. C. to H. C. to Py. Hm/WW4/W17.11.23. Chassis No. 41-NA. - Capt. Philpott. With reference to your memo Bt2/EP/16.11.23, we have to inform you that the… | ||
| Scan153 | Piston clap issues and various component breakages in pre-war and post-war cars. | ||
| View original record | COPY. E. C. BJ. C. Hm. BY11-P14.11.23. PRE-WAR PISTONS & PISTON RING CLAPS. Referring to E1/M121123, written to BJ. in connection with our proposal to overcome piston clap troubles by the use of… | ||
| Scan154 | The causes of troubles with aluminium pistons versus cast iron pistons, focusing on gas leakage. | ||
| View original record | -2- The reason why I think the troubles we have had with these various parts enumerated is due to the aluminium piston, is that it is admitted there is greater leakage of gas past this type of piston,… | ||
| Scan155 | Chasing a decision from an individual regarding 'Piston Ring Clap'. | ||
| View original record | COPY. BJ/Py22/D7.11.23. To BY. from BJ. Re Piston Ring Clap. With reference to your BY10-P1.11.23., this matter was referred to R. for his advice on the 27th. of September, but we have not yet heard… | ||
| Scan156 | Customer complaint regarding piston ring clap on Chassis 23-PB. | ||
| View original record | C O P Y. To BY. from Hm. Hm9/W22.10.23. Re Piston Ring Clap. Further to my conversation with you re the above, we have now received another urging letter from Mr. Stanley Johnson, owner of Chassis… | ||
| Scan157 | Chasing a reply from CJ regarding a proposal on 'Piston Ring Clap'. | ||
| View original record | C O P Y. BY8-P11.10.23. Hm. PISTON RING CLAP. Referring to Hm/WW1/W61023, we have not had a reply from CJ., and I am inclined to think that the reason is that he has submitted my proposal to R. There… | ||
| Scan158 | Chasing for instructions regarding a 'Piston Ring Clap' issue due to pressure from car owners. | ||
| View original record | COPY. To BY. from Hm. Hm/WW1/W6.10.23. Re Piston Ring Clap. With reference to your memo BYLO-P26.9.23., to CJ. on the above matter, we shall be pleased to know if you have had any reply. We are most… | ||
| Scan159 | Proposal to resolve piston ring clap issues in pre-war engines by fitting post-war narrow rings. | ||
| View original record | C O P Y. BY10-P26.9.23. CJ. C. Mr. Chandler. PISTONS. We have occasional trouble with customers pre-war engines from piston ring claps occurring, particularly after an overhaul has taken place in… | ||
| Scan160 | Experiments on post-war piston rings fitted to pre-war pistons to resolve complaints about ring clap. | ||
| View original record | C O P Y. To BY. from Hm. " Hs. Hml1/W24.9.23. Re Post-war Piston Rings on Pre-war Pistons. Further to Hm/NRC1/D4.9.23. Hm4/W5.9.23. In order to overcome piston ring claps of which we get a fair number… | ||
| Scan161 | Proposal for a series of experiments to investigate and resolve the issue of piston ring knocks. | ||
| View original record | C O P Y. To BY. HE. EP. Hm4/W5.9.23. Re Piston Ring Knocks. Further to our Hm/NRC1/D4.9.23, we now propose to carry out the following experiments on a test bed kindly loaned by EP. (1) Run an engine… | ||
| Scan162 | Piston knocks on pre-war chassis, specifically about using pre-war cast-iron pistons. | ||
| View original record | COPY. Hm/NRC. C. BY. C. Hs. EP8/H4.9.23. Re Piston Knocks - Pre-War Chassis. With reference to your Hm/NRC1/D4.9.23, I cannot see any harm in using the pre-war type cast-iron pistons with the present… | ||
| Scan163 | Issue of piston ring knock in pre-war engines after an overhaul. | ||
| View original record | COPY. To BJ. from Hm. Hm/NRC1/W29.8.23. Re Piston Ring Knock. - Pre-War Chassis. Some pre-war engines develop a knock or click in the piston rings, usually a thousand or two miles after the cylinders… | ||
| Scan164 | Roy to Hs seeking confirmation on a draft reply to the British Piston Ring Company. | ||
| View original record | Ps. from ROY. c. to Hs. X741 ROY5/MG7.1.24 I think we are in agreement with the attached proposed reply to the British Piston Ring Company. Please confirm, however. ROY. ENCLOSURE. draft reply.… | ||
| Scan165 | Letter to The British Piston Ring Co. Ltd. regarding the supply and testing of heat-formed lapped rings. | ||
| View original record | Ref: ROY4/MG7.1.24 January 7th.1924 Messrs. The British Piston Ring Co.Ltd. Holbrook Lane, COVENTRY. Dear Sirs:- We have your letter of the 5th instant, confirming Mr. Oubridge's recent visit… | ||
| Scan166 | From B.J. to Hs. requesting an update on issues with lubricating oils. | ||
| View original record | To Hs. from BJ. BJB/H1.10.24. X740 LUBRICATING OILS. X1588/X740 I attach a copy of CWB11/LH29.9.24. Can you please let me know what is being done in regard to overcoming the troubles mentioned? B.J. | ||
| Scan167 | Promotional letter from R. A. Rothermel, Ltd. regarding their PERFECT CIRCLE Oil Regulating Ring. | ||
| View original record | Telephone Nos 'MAYFAIR 578 & 579. Telegrams: ROTHERMEL, WESDO, LONDON. R. A. ROTHERMEL, LTD. MANUFACTURERS, IMPORTERS & FACTORS of MOTOR CAR COMPONENTS, ACCESSORIES, TOOLS, WIRELESS. Sole Director: R.… | ||
| Scan168 | Page 2 of a letter from R. A. Rothermel, Ltd. offering sample engine rings and guaranteeing improved performance. | ||
| View original record | ( 2 ) or more sets for your engines without charge and without any obli-gation on your part, if you will let us have blue prints showing your present ring construction. We feel perfectly safe in… | ||
| Scan169 | Procurement and testing of 'Perfect Circle Scraper Rings' on car and aero engines. | ||
| View original record | X741 To HS. from E. c. to CJ. E2/M18.12.24. RE. PERFECT CIRCLE SCRAPER RINGS. X741 We are sending you herewith correspondence from Messrs. R. A. Rothermel Ltd., together with a description and sample… | ||
| Scan170 | Piston design, oil consumption, and potential solutions for component failure. | ||
| View original record | To E; from R. c. to Cj. RG. BY. c. to Hs. 4741 (handwritten, crossed out) SECRET E & A. C. PISTONS AND OIL CONSUMPTION. Regarding pistons and oil consumption, since tests shew it is not now due to the… | ||
| Scan171 | Patent application for oil scraper rings, particularly the attribution of the 'L' section ring design. | ||
| View original record | F741 BY. from BY/NW. c. to Hs. BY/NW1/VM27/3/25. RE OIL SCRAPER RINGS Referring to your BY10/H23.3.25; the position is that we have already filed an application in Mr.Royce's name in which the "L"… | ||
| Scan172 | Laboratory report on engine lubrication, detailing experiments with mineral oils and fatty acids. | ||
| View original record | X740 Sor. c to Ry. c to Rg. c to EP. c to Hs. c to Hx. H111/EA24.6.25. Laboratory. LUBRICATION. As the result of experiments lasting over a considerable period, we have come to the conclusion that the… | ||
| Scan173 | Letter to Messrs. R.A. Rothermel Ltd. requesting a quotation and availability for 'Perfect Circle Scraper rings'. | ||
| View original record | X741 HS4/LG. 18th. Sept. 1925. Messrs. R.A. Rothermel Ltd., 24/26 Maddox Street, Regent Street, London W.1. Dear Sirs, Sometime ago you wrote to us offering to supply us with a set of Perfect Circle… | ||
| Scan174 | Letter from a supplier confirming the manufacture of 'Perfect Circle Oil Regulating Rings' based on provided blueprints. | ||
| View original record | Telephone Nos Mayfair 578 & 579. X.741? Telegrams: Rothermel, Wesdo, London. R.A. Rothermel, Ltd. Manufacturers, Importers and Factors of Motor Car Components, Accessories, Tools, Wireless. Sole… | ||
| Scan175 | Comparing the oil scraping performance and accuracy of Wellworthy and Brico piston rings. | ||
| View original record | HS. [crossed out] Mr. [crossed out] Wcr [crossed out] Sft/Mr Cox x741 BY14/H. 21.10.25. PISTON RINGS. With reference to the fact that the Wellworthy Ring does not appear to scrape oil as well as the… | ||
| Scan176 | Comparing the poor performance of 'Wellworthy' piston rings with the superior 'Brico' rings, and recommending a change in supply. | ||
| View original record | X741 Wa. Hs. LSy. [Strikethrough] SFt. [Strikethrough] Sft/Mr.Cox. C. Hos. [Strikethrough] CHASSIS - PISTON RINGS. Apparently from the information which is now available it would appear that… | ||
| Scan177 | Proposal to modify the grinding of Wellworthy piston rings, with a comparison to Brico rings. | ||
| View original record | RMC. c. Hs. 4741 BY15/H. 21.10.25. WELLWORTHY RINGS. I would like to take some Wellworthy rings and modify the grinding of them slightly. My proposal is that we should make a fitting which will throw… | ||
| Scan178 | Clear marking of components fitted with 'Wellworthy' rings for testing. | ||
| View original record | - 2 - BY1/H. 21.10.25. to be built up to go through its test with "Wellworthy" must be clearly marked, indicating that it has "Wellworthy" rings on it. BY. By | ||
| Scan179 | Advice note from R. A. Rothermel, Ltd. for the supply of oil regulating and compression piston rings. | ||
| View original record | ADVICE NOTE. R. A. ROTHERMEL, LTD. (Sole Director: R. A. ROTHERMEL, American Citizen.) Handwritten top left: W / HP Handwritten top right: X741 OUR ORDER NO: R18171 YOUR ORDER NO: DATE: SALESMAN: Red… | ||
| Scan180 | Order for oil regulating and compression piston rings. | ||
| View original record | X.741 To ROY. from Hs. Hs4/LG5. 3. 26. Will you please send order to Messrs. R.A. Rothermel, Ltd., 24/26 Maddox Street, Regent Street, London W.1. for :- 18 Oil Regulating piston rings 4 1/4 X 3/16.… | ||
| Scan181 | Tests investigating the effect of piston ring clearance on gumming up tendencies in a Phantom engine. | ||
| View original record | X741 To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to BY. Hs/ACL1/LG18.11.26. GUMMING UP OF PISTON RINGS. X.3996 X.741 X.1919 X.8040 We have made some tests on a standard Phantom engine to see… | ||
| Scan182 | Test results on piston ring groove clearance and carbon build-up. | ||
| View original record | Contd :- -2- Our tests indicate that there is less tendency to 'gum up' with large groove clearance than with small. A probable explanation is that liberal clearance allows sufficient movement of the… | ||
| Scan183 | The influence of stiff versus weak piston rings on 'gumming up' within the grooves of a Phantom engine. | ||
| View original record | to R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to DA. BY. [Handwritten] X741 Hs/ACL1/LG19.11.26. PISTON GUMMING EXPERIMENTS. [Handwritten] X741 [Handwritten and crossed out] X8040 The influence of… | ||
| Scan184 | Page concluding the results of tests on piston ring gumming tendency and stiffness. | ||
| View original record | contd :- -2- hard carbon found in the previous test. Therefore we may say that from these tests :- (1) The gumming tendency is less with rings having large groove clearance than those having small… | ||
| Scan185 | Design of scraper rings for engines. | ||
| View original record | To Hs. from R. c. to BJ. RG. E. BY. +7+1 RL/M31.3.27. SCRAPER RINGS. X. 2103 X. 741 We don't want to be dependent on 'L' shaped rings on either cars or aero engines. There is the ring known as the… | ||
| Scan186 | Graph plotting oil flow through bearings against engine RPM for car 12.EX. | ||
| View original record | OIL FLOW THROUGH BEARINGS ON CAR. 12. EX PRESS 17.5 - 27 lbs/[]" OIL FLOW PTS/MIN. 3 2 1 0 R.P.M. 500 1000 1500 2000 2500 acp | ||
| Scan187 | Use of tapered piston rings as oil scrapers and their effect on oil consumption. | ||
| View original record | To Hs. from R. c. to BJ. RG. c. to BY. E. 474H R5/M2.5.27. PISTON RINGS. X.2103 X.741 X.8040 X.3996 I understand that we are using on both car and aero engines, piston rings ground to a slight taper… | ||
| Scan188 | Oil consumption experiment on a Phantom test bench engine comparing standard versus upward sloping drain holes. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to BY. X741 Hs/ACL1/LG9.5.27. OIL CONSUMPTION EXPERIMENTS ON PHANTOM. x986 An oil consumption test has been made on the Phantom test bench engine in… | ||
| Scan189 | Instructions and considerations for piston design, addressing issues like gummed pistons and oil consumption. | ||
| View original record | To RG. Hs. c. to Wor. BY. E. x741 R1/M23.5.27. GUMMED PISTONS - RR. Cs. & Fs. X.3996 X.741 AND CAR WORK. X.8040 X.2103 Y2603 As before instructed let us make no pistons for any purpose, such as H.C.,… | ||
| Scan190 | Instructions for the correct fitting of piston rings for automobile and aviation engines, by Amédée Bollée. | ||
| View original record | Les Segments Amédée BOLLÉE, Le Mans Ce que nous croyons devoir dire sur le MONTAGE CORRECT DES SEGMENTS DE PISTONS (Moteurs du type “Automobile” et “Aviation”) Epaisseur normale. — Sauf cas spéciaux,… | ||
| Scan191 | Advertisement for the Amédée Bollée special vice for adjusting oblique-cut piston rings. | ||
| View original record | L'ÉTAU SPÉCIAL Breveté S. G. D. G. par... "Les Segments AMÉDÉE BOLLÉE" permet l'ajustage correct et rapide des becs obliques des segments Tout mécanicien averti apprécie l'heureux effet d'une… | ||
| Scan192 | Advertisement leaflet for Amédée Bollée double scraper piston rings. | ||
| View original record | Une vieille idée mise au point par... les Segments AMÉDÉE BOLLÉE Le double racleur D. R. T. AMÉDÉE BOLLÉE jugé par un Maître de la mécanique moderne : « Je vous confirme que l'emploi des doubles… | ||
| Scan193 | Technical leaflet for Amédée Bollée scraper piston rings, detailing different types, their advantages, and a list of clients. | ||
| View original record | Les Segments râcleurs Amédée BOLLÉE La pression dont notre Segment normal appuie sur la paroi du cylindre réduit l'épaisseur de la couche d'huile qui y est adhérente et conséquemment la quantité… | ||
| Scan194 | French product sheet for 'Amédée Bollée' piston rings, detailing specifications and fitting instructions. | ||
| View original record | Téléphone 0.61 Télégramme Amébol Le Mans Segments AMÉDÉE BOLLÉE D'ÉTANCHÉITÉ Tarif Avril 1927 HAUTEUR D | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11… | ||
| Scan195 | 'Perfect Circle Piston Rings' and arranging an interview with Mr. Potter. | ||
| View original record | X741 To Roy. from Hs/Rm. Hs/Rm7/LG15.7.27. PERFECT CIRCLE PISTON RINGS. We think it would be of interest if we XXX could interview Mr. Potter when he comes to England. Will you please let us know when… | ||
| Scan196 | Letter asking for clarification on the standardization of Perfect Circle piston rings. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. S/W HS Na1B102027 October 20th, 1927. Mr. Basil Johnson, Rolls-Royce Limited, 14-15 Conduit Street, London W-1, ENGLAND. Att. Mr. Hives - Derby Re:… | ||
| Scan197 | Use and effectiveness of 'The Perfect Circle' piston rings on aero and Phantom engines. | ||
| View original record | X741 To Ps. from Hs. Hs2/LG22, 10.27. RE. PISTON RINGS & OVEROILING. X2103 [crossed out] X741 With reference to your Ps1/IL20.10.27. We are actually using on our aero engine pistons a scraper ring… | ||
| Scan198 | The trial and potential adoption of Perfect Circle piston rings. | ||
| View original record | Na, Springfield. from HsF V741 Hs3/LG7.11.27. PERFECT CIRCLE PISTON RINGS. X.741 At the moment we have not standardised these rings for standard production. We are trying them out on some new pistons.… | ||
| Scan199 | Installation instructions for Dubois Oilproof Rings on pistons. | ||
| View original record | INSTALLING INSTRUCTIONS DuBois Oilproof Rings (Trade Mark Reg.) (Patented) CAUTION On Pistons Under 3½ Inch drill 8 or more holes not less than 5/32. Larger Pistons In Proportion. The DUBOIS OILPROOF… | ||
| Scan200 | Letter from DuBois Machine Company to the Chief Engineer proposing their new Combination Oilproof Ring. | ||
| View original record | DUBOIS MACHINE COMPANY 118-128 HUDSON AVENUE ALBANY, N.Y. November 9, 1927. Rolls-Royce of America, Inc., Page Boulevard, Springfield, Mass. Attention: Chief Engineer. Dear Sir: We are bringing to… | ||
| Scan201 | Concluding page of a letter from DuBois Machine Company. | ||
| View original record | DUBOIS MACHINE COMPANY 118-128 HUDSON AVENUE ALBANY, N.Y. Rolls-Royce of American, Inc., - #2. 11/9/27. Trusting we may interest you and awaiting your reply, we remain Very truly yours, DU BOIS… | ||
| Scan202 | Piston breakage on a 20 HP chassis and proposing design modifications to the piston rings. | ||
| View original record | BY. from E. c. to BJ. Hs. Handwritten: X741 E6/M17.7.28. 20 HP. PISTON. X.741 X.5040 We have not yet seen any report, or the broken pieces, of the piston which went to bits on the low geared 20 HP.… | ||
| Scan203 | Development and testing of improved piston designs for 20 HP and Phantom engines. | ||
| View original record | Hs. BY. from R. c. to BJ. Wor. 4741 R3/M20.7.28. 20 HP. PISTONS. X.5040 X.7040 X.741 to 14-EX We have already sent you an ordinary type piston strengthened, and we have also sent you a group of… | ||
| Scan204 | From Royce expressing anxiety about piston rings and suggesting design changes for the Twenty HP and Phantom models. | ||
| View original record | Hives, Roycar, Derby. VERY ANXIOUS ABOUT PISTON RINGS. UNDERSTAND PLAIN RING WILL BE USED AT ONCE ON TWENTY HP. PRODUCTION BUT PHANTOM STILL DEPENDING ON OUR L. SHAPE. SUGGEST PISTON LEC. 2554 WITH… | ||
| Scan205 | Modifications to Phantom piston rings to increase cylinder wall pressure. | ||
| View original record | X741 ORIGINAL R2/M23.7.28. HS. FROM R. C. to BJ. HS. PHANTOM PISTON RINGS. X741 X7040 We want to get more pressure on the cylinder walls by deeper rings, with wider gap. Get some to give an increase… | ||
| Scan206 | Design, testing, and grinding instructions for a new pedestal piston. | ||
| View original record | BY. from E. c. to BJ. Hs. 4741 E3/M24.7.28. PEDESTAL PISTON & INDIA 3. X.5040 X.741 We send herewith LeC. 2578 shewing the above. This piston should be tested with the scraper ring at the bottom, and… | ||
| Scan207 | Fitting of pistons and rings for 20 HP and Phantom engines. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to E. DA. c. to BY. +741 Hs2/LG25. 7.28. X.7040 X.5040 X.741 PISTONS AND RINGS. 20 HP. 12-G-4 engine is being fitted with pistons to Lec. 2577 and we anticipate this… | ||
| Scan208 | Performance of 'perfect circle' versus 'L' shaped piston rings and the number of rings per piston. | ||
| View original record | Hs. BY. from R. c. to BJ. RG. Fl. X741 R6/1120.8.28. PISTON RINGS. X.741 X.5040 I am very pleased to hear that the perfect circle piston ring with slight modifications promises to fill the duty of a… | ||
| Scan209 | Performance of cross web pistons and 4 pinned rings on a 20 HP car. | ||
| View original record | Hs. from R. c. to BJ. Wor. BY. 4741 R4/M19.9.28. 20 HP. ETC. PISTONS. G.4. X.5040 X.5230 X.741 X.5050 Although we have no further interest in the cross web pistons tried on the above car, one should… | ||
| Scan210 | Consideration of piston rings from the Wellworthy Piston Ring company. | ||
| View original record | ~~BY.~~ from ROY. ~~RG.~~ " " HS. " " X741 ROY3/MG3.10.28 PISTON RINGS The Wellworthy Piston Ring people are still particularly anxious we should consider their Rings, and write as copy attached. ROY.… | ||
| Scan211 | Letter from a Managing Director discussing the benefits and trial of a new slotted oil control piston ring. | ||
| View original record | To accompany ROY3/MG3.10.28 (Piston Rings) SLOTTED OIL CONTROL RING "This ring is meeting with such complete success "that I should really like to make up a set of these rings for trial purposes. "As… | ||
| Scan212 | Submitted type of piston ring already being used for aero work. | ||
| View original record | ROY. c. Rg. c. Hs. ----------- X741 BY10/G.4.10.28. PISTON RINGS. ----------- The type of ring submitted is actually being used by us for aero work in a somewhat improved form. BY. By | ||
| Scan213 | Design and specifications of pistons and piston rings. | ||
| View original record | Hs. from R. c. to BJ. Wor. By: X741 R5/M18.10.28. RE. PISTONS. X.8040 X.5040 X.7040 X.741 We conclude that you do not want a lower scraper ring. We agree we only put it on to reduce the over-oiling… | ||
| Scan214 | Desired specifications and features for pistons on Phantom and 20 HP models. | ||
| View original record | -2- contd :- of the pistons we wish to get adopted :- We want 3 narrow rings and a perfect circle ring all pinned as shewn on LeC.2490 for both chassis. We understand you are following LeC.2577 type… | ||
| Scan215 | Oil-controlled piston ring sample submitted by the Light Production Company. | ||
| View original record | X741 Rg. from ROY. c. to Hs. ------------------ ROY9/MG30.1.29 ------------------ PISTON RINGS Herewith yet another oil controlled Piston Ring, submitted on this occasion by the Light Production… | ||
| Scan216 | Use of rectangular piston rings on the SS chassis and monitoring for over-oiling. | ||
| View original record | HS. X741 C. BYGS. BY12/G.17.1.29. PISTON RINGS. On the SS. chassis so far we have instructed purely rectangular rings. We would like you to watch whether over-oiling is evident or not, as on the… | ||
| Scan217 | Letter from The Light Production Co. Ltd. describing their new 'Slotted Wypa' Oil Control Ring. | ||
| View original record | COPY From: THE LIGHT PRODUCTION CO.LTD. HBJ/MB 60-66 Rochester Row, WESTMINSTER S.W. 1 28th January,1929 Messrs. Rolls-Royce Ltd., Nightingale Road, Derby Dear Sirs, We have the pleasure to enclose… | ||
| Scan218 | Letter from The Light Production Company Limited regarding scraper and piston rings. | ||
| View original record | COPY From: THE LIGHT PRODUCTION COMPANY LIMITED. - 2 - 28th January 1929 With this type of Scraper Ring, as for the ordinary Slotted Scraper Ring, a requisite number of holes have to be provided… | ||
| Scan219 | Oil control and efficiency, quoting a letter from Wellworthy Limited about their new 'High Efficiency' Slotted Oil Control Piston Ring. | ||
| View original record | To RG from ROY. c. to E. c. to HY c. to Ms. ROY7/MG11.4.33 Messrs. Wellworthy Limited, of Lymington, write as copy attached, and have sent one sample which I hand to RG. Would you care to see any… | ||
| Scan220 | Tendency for piston rings to collapse at high speeds and requesting crankcase pressure data. | ||
| View original record | XJ+1- To Hs/CTS. " Hs/Std. Hs/Rn.5/KT.19.6.33. We have been told that on certain high speed engines there is a tendency for the piston rings to collapse when certain speeds have been exceeded. We do… | ||