Modification options for a 25HP engine and the resulting horsepower outputs.
| Identifier | WestWitteringFiles\T\March1929-December1929\ Scan266 | |
| Date | 19th November 1929 | |
| HS. {Lord Ernest Hives - Chair} } FROM R. {Sir Henry Royce} RY. } Copy to SG. {Arthur F. Sidgreaves - MD} Copy to WOR. {Arthur Wormald - General Works Manager} re. 25HP. ORIGINAL R1/M19.11.29. X5770. We shall have:- (1) China(Experimental Engine) 1. as at present - HP. 57. (2) China(Experimental Engine) 2. modified, using present head - HP. 70. (3) China(Experimental Engine) 3. modified, using modified coring to present head - HP. 75. (4) Japan(Experimental Engine) 1. modified from original slightly - HP. 80. The HP. given in each case is the approximate maximum peak, with open exhaust. China(Experimental Engine) 1. can be made into China(Experimental Engine) 2. by scrapping the camshaft, valves, exhaust, etc. China(Experimental Engine) 2. exhaust pipe is new, and the same as China(Experimental Engine) 3. China(Experimental Engine) 2. valves and cams are new, but the same as China(Experimental Engine) 3. and Japan(Experimental Engine) 1. - i.e. we want, and can have, only one move to one part, so it must be the best possible, carefully finessed, and up-to-date in design and material. R. {Sir Henry Royce} [STAMP: RECEIVED NOV 23 1929] | ||
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).