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 a mushroom-type H.T. distributor rotor by filling an old key-way and cutting a new one.
| Identifier | ExFiles\Box 61b\2\ scan0087 | |
| Date | 2nd May 1928 | |
| RHC.{R. H. Coverley - Production Engineer} from EFC. X.7690 EFC1/T1.2.5.28. Herewith we hand to you mushroom type H.T. distributor rotor. Will you please have the present key-way (which was suitable for correct timing with the off-set make and break rocker arm) filled up and another key-way cut which will be suitable for the standard contact breaker arm. This to be done in a similar manner to two which you previously converted. EFC. | ||