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).
Instruction to fit an experimental 25 HP unit No. B-15 with 45° helix angle timing gears for testing in France.
| Identifier | ExFiles\Box 101\4\ scan0129 | |
| Date | 11th November 1935 | |
| X 520ea To Sft.{Mr Swift} Hs{Lord Ernest Hives - Chair}/FJH.{Fred J. Hardy - Chief Dev. Engineer}22/KW.11.11.35. We have sent over to you an experimental 25 HP. unit No..B-15 which is shortly going to France. We think this offers an excellent opportunity to find out whether timing gears with 45º helix angle would be satisfactory from the point of view of end thrust. Will you please fit to this unit a set of the 45º gears that you have prepared. Hs{Lord Ernest Hives - Chair}/F.J.Hardy. | ||