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).
Analysis of seized main bearings from chassis B.125.GP, suggesting the cause was incorrect clearance or improper running-in.
| Identifier | ExFiles\Box 146\1\ scan0338 | |
| Date | 4th August 1938 | |
| W/P - Sr. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}11/JH.4.8.38. CHASSIS B.125.GP. In reply to your memo. Sr/VA.10/GM.15.7.38. the main bearings which were removed from the above car in a siezed condition, have been analysed and found to be of the correct material, namely AC.7. We can only conclude therefore that as the car had only completed a small mileage after being modified before roughness was noticed, that the clearance on the maximum crank diameter was slightly undersized or that the car was driven at high speeds without sufficiently running in after the new bearings were fitted. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||