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).
Work instructions for tests on a rear axle to reduce noise.
| Identifier | ExFiles\Box 84\4\ scan0335 | |
| Date | 5th November 1937 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} 202 Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer}7/AP.5.11.37. 1.B.lV. REAR AXLE. We are carrying out some tests on axle noise on the above chassis and this memo is to confirm that we have asked you to do the following work in the order shown below. 1. Grind 0.002 off grooved face of pinion bearing thrust race and fit nip washer 0.002 greater than free gap. 2. Remove bearing from housing, measure preload, grind further 0.002 off same face and increase nip to 0.004. 3. Grind further 0.002 off race and increase nip to 0.006. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} | ||