The strength of special rear springs for the 117-MC Summers car, noting they are stronger than required.
| Identifier | ExFiles\Box 67a\1\ scan0241 | |
| Date | 21th August 1926 | |
| To BY {R.W. Bailey - Chief Engineer} /SS. {S. Smith} from Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} x8410 Hs {Lord Ernest Hives - Chair} /Rm {William Robotham - Chief Engineer} 2/LG21.8.26. 117-MC - SUMMERS CAR. x4117 X8410 With reference to the special rear springs which were ordered for 117-MC car. We attach details of the buffer clearances obtained with these springs, submitted by the R.D. It will be observed from the buffer clearances that these springs are rather more than 15% stronger than we require as the specified buffer clearance was 3.5" with 4 passengers. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} | ||
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).