Comparative strength of axle pivots, referencing Mr. Royce's concerns and citing test data.
| Identifier | ExFiles\Box 2\B002_X168\ 00000001-page217 | |
| Date | 7th January 1914 | |
| ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS:— 'ROYCAR,' DERBY. TELEPHONES: 470 (Four Lines). Names and Indicating letters. Initial if document retained A Mr. ADAMS By Mr. BAILEY Ba Mr. BARRINGTON B Mr. BEEKED Mr. Bt {Capt. J. S. Burt - Engineer} Mr. BURT C Mr. CHAMBERLAIN Cw Mr. COWEN Mr. Cx {Major Len W. Cox - Advertising Manager} Mr. COX Dte Mr. DALGLEISH D Mr. DAY E Mr. ELLIOTT F Mr. FRIESE G Mr. GRAPP Hy {Tom Haldenby - Plant Engineer} Mr. HALDENBY H Mr. HALLAM J Mr. HANSURT Js {Mr Johnson's Secretary} Mr. JOHNSON's Secretary K Mr. KILNER Mac {Mr Macintosh} Mr. MACINTOSH N Mr. HOON Na {Mr Nadin} Mr. NADIN PB Mr. NORTHAY O Mr. OLDHAM Pa {Mr Paterson} Mr. PATERSON EP {G. Eric Platford - Chief Quality Engineer} Mr. PLATFORD R Mr. ROBINSON Ro {C. C. Rose - Export Manager} Mr. BOYCE RS {Sir Henry Royce's Secretary} Mr. ROYCE's Secretary JR {Mr James Royce} Mr. JAMES ROYCE S Mr. SANDERSON LHS {Lord Herbert Scott - Chair} 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 W.M. Mr. WORMALD re Axle Pivots. X168 7.1.14. DaS/C6114. Mr. Royce in his memo 73/P2114 says that if the stub portion of the Axle Pivots F.3696/7 is considered to be weaker than that of the previous standard, F.3253 that they should be scrapped. The following is my information on the subject, and I should be much obliged if you would kindly say whether you consider that the doubt as to the strength of F.3696/7 (F.3372/3 modified) is sufficient to justify scrapping them and replacing. viz:- Taking bending moments about the weak- est portion, the b/a stressing up to the elastic limit is - F.3253 . . . . . . 18,140 lbs. F.3696 (F.3372) 32,000 lbs. In an experiment Wor {Arthur Wormald - General Works Manager} /Hyd/L/5813, it was shown that reducing the diameter of the stub on F.3253 right up to the U section, did not appreciably reduce the strength. In a test over obstacles on the track (AV/RSE/117313) and F.3253 type pivot ran for 540 minutes and then cracked in the U section. STAMP: RECEIVED 23 JUL 1914 This sheet must be filed with the correspondence to which it refers. | ||
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).