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).
Rattles from the magneto drive's serrated joints on 20 HP cars and a proposed solution.
| Identifier | WestWitteringFiles\J\December1922\ Scan74 | |
| Date | 1st December 1922 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to EY. ORIGINAL Hs{Lord Ernest Hives - Chair}4/LGS.12.22. X4327 MAGNETO DRIVE FOR 20 HP. CARS. When running with the magneto fitted, we get slight rattles from the serrated joints. We have tried other types of joints, which, although they overcome the noise, they make it very much more difficult to remove or replace the magneto. As at present the magneto must be removed every time the tappets are adjusted, it is necessary to have an easily detachable joint. We have found that if we can apply friction to the present serrated joints, it will prevent the noise. We feel that we have got to do something with this before we can be satisfied with the magneto as arranged on the 20 HP. Hs.{Lord Ernest Hives - Chair} | ||