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).
Bumping test of a front axle, F.3391.
| Identifier | ExFiles\Box 49\4\ Scan011 | |
| Date | 21th January 1914 | |
| From Exp. Dept. Copies for:- J R Na.{Mr Nadin} Da.{Bernard Day - Chassis Design} Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer}10/021114. 21st. January 1914. Report on Bumping Test of Front Axle. F.3391. ------------------------------------------ X. 23. ------------------------------------------ This axle is the present standard but the top flange has now been made wider near the spring rests and future axles should be stronger where the present ones fail. This is the third axle broken on the bumping machine and all have broken in the same place. This one cracked on the top flange 3" on the inside of the nearside spring after running 24 hrs 6 mins. and broke after 37 hrs. 1 min. 3" humps were used run at 105 revs per min. (sgd). Hy.{Tom Haldenby - Plant Engineer} | ||