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).
Failure of spare wheel carrier clips and the design challenges of ensuring its rigidity.
| Identifier | ExFiles\Box 67\2\ scan0106 | |
| Date | 10th August 1927 | |
| To DA{Bernard Day - Chassis Design}, from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X8400 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}5/LG.10.8.27. SPARE WHEEL CARRIER. X8600 We are sending to you under separate cover a portion of the 2 clips which failed on N.sch.2419. We quite appreciate your point about the difficulty of getting a rigid spare wheel carrier without a luggage grid. The bottom tube in N.sch.2419 seems fairly rigid but the difficulty is to carry the rigidity up the plate. Even if the plate and clips are very rigid the moment of the wheel weight about the bottom tube is such that we fear the latter might fail under severe conditions of vibration. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||