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).
Modifications and measurements for car 34-GN, including new springs, drums, and servo cam.
| Identifier | ExFiles\Box 47\3\ Scan302 | |
| Date | 2nd December 1931 | |
| 84117. 2.12.31. 34-GN - FAIREY. Buffer to axle clearances with new rear springs N.S.F. 1 5/8" N.S.R. 3.11/16" O.S.F. 1 5/8" O.S.R. 3 5/8" taken with 2 1/2 cwts. ballast on carrier and spare wheel. Ribbed drums were fitted to this car. High carbon steel to the front and Lake & Elliott cast iron to the rear - all solid drums. Stronger valve springs were fitted which put the balancing speed up to approx. 60 M.P.H. The servo of this car was improved by the fitting of 35° ball bearing servo cam. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||