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 to a 40/50 bump chassis for testing purposes.
| Identifier | ExFiles\Box 18\3\ Scan140 | |
| Date | 16th August 1930 | |
| To RHC.{R. H. Coverley - Production Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} x877² Hs{Lord Ernest Hives - Chair}/Rml/MS.16.8.30. Re: Bump Test. Will you please fit the 40/50 bump chassis with the latest bijur scheme connected to the axles, also with a pair of rolled eye springs erected "dry" as we wish to test the lubrication of the rear end. We should like to use the springs off 24-EX. and run a pair of solid eye springs on this car. Will you also fit a pair of case hardened inner levers to the rear shock dampers. These are being instructed by the D.O. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||