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).
'bump' test failure of a bottom support bracket for a new type 20 HP steering system.
| Identifier | ExFiles\Box 119\2\ scan0286 | |
| Date | 22th April 1926 | |
| To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/ACL c. to DJ. NG. c. to B. SA. c. to BY.{R.W. Bailey - Chief Engineer} WOT. 44268 Hs{Lord Ernest Hives - Chair}/ACL1/LG22.4.26. 20 HP. STEERING ON 'BUMP' TEST. (5430 We have carried out some bumping tests on the new type 20 HP. steering - F.53935 - having the outside pendulum lever and the new front axle. Only 33 minutes running was obtained before the 'bottom support bracket' failed at the holding down flange. This bracket was constructed of brazing metal which was the material instructed for this experiment. The top part of the ~~flange~~ bracket was torn completely away from the flange leaving the holding down lugs on the flange attached to the steering box. The pieces shewed signs of considerable distortion, apparently before failure, as indicated in the sketch below :- FRACTURE contd :- | ||