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).
Request to modify two flywheels to test a 12-EX crankshaft without its slipper wheel.
| Identifier | ExFiles\Box 14\2\ Scan011 | |
| Date | 8th May 1928 | |
| To RHC.{R. H. Coverley - Production Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} x7010 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG1 8.5.28. [Handwritten] x7010 x7300 We want to try 12-EX crankshaft without the slipper wheel. Owing to the construction of the new type slipper drive we cannot do this without machining alteration. We have two odd flywheels that are not required now that the spring plate type of drive has been adopted. Will you please machine them to the attached sketch and fit them on 12-EX car. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||