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).
Memo discussing valve spring modifications to increase engine RPM before valve jumping occurs.
| Identifier | ExFiles\Box 80\3\ scan0170 | |
| Date | 2nd October 1913 | |
| ROLLS-ROYCE LIMITED, X290 NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (Four Lines). Names and Indicating letter. Initial of person addressed. A Mr. ADAMS By Mr. BAILEY Bn{W.O. Bentley / Mr Barrington} Mr. BARRINGTON B Mr. BEREND Bt{Capt. J. S. Burt - Engineer} Mr. BURT Cn{Mr Chamberain} Mr. CHAMBERLAIN C Mr. COWEN Cx{Major Len W. Cox - Advertising Manager} Mr. COX D Mr. DeLOOZE Da{Bernard Day - Chassis Design} Mr. DAY E Mr. ELLIOTT F Mr. FRIESE G Mr. GNAPP Hy{Tom Haldenby - Plant Engineer} Mr. HALDENBY Hm{Capt. W. Hallam - Head Repairs} Mr. HALLAM H Mr. HANBURY J Mr. JOHNSON JS{Mr Johnson's Secretary} Mr. JOHNSON'S Secretary K Mr. KILNER Mac{Mr Macintosh} Mr. MACINTOSH M Mr. MOON Na{Mr Nadin} Mr. NADIN PN{Mr Northey} Mr. NORTHEY O Mr. OLDHAM Pa{Mr Paterson} Mr. PATERSON Pd Mr. PLATFORD Rn{Mr Robinson} Mr. ROBINSON R Mr. ROYCE RS{Sir Henry Royce's Secretary} Mr. ROYCE'S Secretary JR{Mr James Royce} Mr. JAMES ROYCE Sn{Mr Sanderson} Mr. SANDERSON LHS{Lord Herbert Scott} LORD HERBERT SCOTT Sp{Mr Spinney} Mr. SPINNEY V VIENNA Wa{Mr Wallis} Mr. WALLIS Whr{Mr Wheeler} Mr. WHEELER Wd{Mr Wood/Mr Whitehead} Mr. WHITEHEAD Wor{Arthur Wormald - General Works Manager} Mr. WORMALD [Reference Line 1]: E3/21013 VALVE SPRINGS X44 [Reference Line 2]: RE WOR{Arthur Wormald - General Works Manager}|EH14|L11013 [Handwritten Note]: Mr Hives [crossed out] copy to PN.{Mr Northey} Mercer In confirmation of my conversation with you of to-day's date please note the strong valve springs mentioned in the above report were designed to allow the engine to run at 2500 rpm and the valve mechanism to start jumping at 2750 thus putting up the jumping speed 500 revs. Will you kindly therefore make a suitable modification to your report. Wor{Arthur Wormald - General Works Manager} Kindly add note on my report E.{Mr Elliott - Chief Engineer} RH{R. Hollingworth} 2/10/13 [Footer]: This sheet must be filed with the correspondence to which it refers. | ||