Comparative strength of different axle pivot designs based on bending moments and test results.
| Identifier | ExFiles\Box 2\12\ B002_X168-page217 | |
| Date | 7th January 1914 | |
| R.R. Dpt. (malt) (VV.eh. 19.1.14) R.R. 146. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (Four Lines). [Distribution List] Names and indicating letter. Initial of person addressed A Mr. ADAMS By Mr. BAILEY B Mr. BARRINGTON R Mr. BEEREND Her. Bt {Capt. J. S. Burt - Engineer} Mr. BURT Cor Mr. CHAMBERLAIN Wor. {Arthur Wormald - General Works Manager} Cn {Mr Chamberain} Mr. COWEN W.W. 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. HALLEM 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 EP {G. Eric Platford - Chief Quality Engineer} Mr. PLATFORD Ra 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 LHe 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 [STAMP: W.M. JAN 8 1914 RECEIVED] re Axle Pivots. X168 7.1.14. DaS/C6114. Mr. Royce in his memo RB {R. Bowen} /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 blow stressing up to the elastic limit is - F.3253 - 18,440 lbs. F.3696 (F.3372) 32,000 lbs. In an experiment Wor {Arthur Wormald - General Works Manager} /Hy {Tom Haldenby - Plant Engineer} 6/L28613, 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 (AW/HH2/117313) and F.3253 type pivot ran for 540 minutes and then cracked in the U section. 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).