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).
Failure of U.S.A. Bosch magnetos and considering alternatives, including the sleeve type.
| Identifier | WestWitteringFiles\F\April1921\ Scan27 | |
| Date | 13th April 1921 | |
| To EFC. from R.{Sir Henry Royce} Copy to CJ. [Struck through] " " HS.{Lord Ernest Hives - Chair} [Struck through] " " PN.{Mr Northey} [Struck through] ORIGINAL. [Stamped] RECEIVED APR 13 1921 [Stamped] RE MAGNETOS. X.430! X.3916. X.4181. X.3917. X.3515. R8/G11/4/21. (5 My remarks of failure of U.S.A. Bosch should have referred to a smaller type (B.6) No failure has been experienced with the more exact copy of the original Z.R.6 (which we have adopted) Very slow running combined with light weight can only be obtained with the sleeve type. (Watford & Thomson Houston) These promise well, and should have many advantages. Do they permit of the safety gap being larger ? Let Mr. Northey have a sleeve type on his car to see if it satisfies all his views. R.{Sir Henry Royce} | ||