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).
Confirming the bore diameter for an experimental Bentley idler gear, DB.987.
| Identifier | ExFiles\Box 62\1\ scan0304 | |
| Date | 28th March 1935 | |
| Handwritten: Master Motor File 86134 HARDY Typed: Op. Dept. c. EXPl.Dept. from Ws/Ay. Ws/Ayl/W28-3-35. RE - IDLER GEAR (REDUCTION GEAR) DB.{Donald Bastow - Suspensions}987. BENTLEY; EXPERIMENTAL. This is to confirm our conversation with your Mr.Ford that just previous to cutting the gear teeth on the above piece, the diameter of bore will be as shown on sketch below :- Text on sketch: .360 DIA +1/2 Ws/Ay. | ||