Diagnosing a slight judder in SG's car, identifying the cause as the engine mounting.
| Identifier | ExFiles\Box 109\5\ scan0027 | |
| Date | 28th March 1938 | |
| 664. To Rm. {William Robotham - Chief Engineer} from Rm {William Robotham - Chief Engineer} /NRC. {N. R. Chandler} ~~c.c. LA. {L. A. Archer} ~~ ~~c.c. Rm {William Robotham - Chief Engineer} /Wym. {G. Harold Whyman - Experimental Manager} ~~ Rm {William Robotham - Chief Engineer} /NRC. {N. R. Chandler} 7/MH. {M. Huckerby} 28.3.38. RE SG {Arthur F. Sidgreaves - MD} 'S CAR. Have just demonstrated to LA. {L. A. Archer} that the slight judder which can only be produced at very low RPM. is a function of the engine mounting and not the clutch. Procedure - Let car run on level at about 10 M.P.H. on top, Pull it down to 8 M.P.H. by the brakes on a slight gradient at the same time giving a little more gas, and the "judder" is there, complete with rattles, although the clutch is fully engaged. The same thing can be demonstrated by reversing up hill at 1 to 2 M.P.H. with clutch fully engaged, and with or without use of brakes. Rm {William Robotham - Chief Engineer} /NRC. {N. R. Chandler} | ||
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).