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).
Alteration to the synchromesh cam angle for the 2nd Speed Synchromesh Gearbox No. 2.
| Identifier | ExFiles\Box 123\3\ scan0150 | |
| Date | 9th March 1934 | |
| X4704 To RHC.{R. H. Coverley - Production Engineer} Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}10/KW.9.3.34. 2nd Speed Synchromesh Gearbox No. 2. We understand you are building this up with 20/25 ratio ground gears. We should also like to try an altered synchromesh cam angle, namely 55° instead of 45°, the size and type of cone to be as in Box No. 1. [Handwritten on drawing] 55° THESE DIMENSIONS NOT TO BE ALTERED | ||