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).
Solutions for failing rear axle tubes and inquiring about experimental testing of new schemes.
| Identifier | ExFiles\Box 49\1\ Scan103 | |
| Date | 10th November 1919 | |
| R.R. 235a (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. X3457 EH. from BY. {R.W. Bailey - Chief Engineer} C. Ex. (struck through) BY11/P10.11.19. CHASSIS - REAR AXLE TUBES. Owing to the trouble which we experienced just prior to the war with the rear axle tubes breaking off at the inside of the inner ball bearing of the hub, two special schemes were detailed and sent down to the experimental department, showing a means of using the most expensive part of the rear axle tube, namely, the large taper, the arrangement drawing number for one G.5470. A second scheme was also arranged for using details G.5426/7 and G.5428/9, all of which are size 4 drawings, and G.5425 which is a size 2 drawing. Can you let me know whether any actual tests were carried out on the above composite tube schemes, with the object of finding out how they stood up against:- (a) Stress reversal testing on a rotating rig. (b) Bumping testing on a bumping rig. This matter is important from the point of view that it may be necessary for us to consider strengthening up of our axle tubes as they become available, by one or other of the above schemes. BY. {R.W. Bailey - Chief Engineer} By (handwritten signature) For Arrangement drawing of both schemes see LeC.566. | ||