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).
Comparing the gear change performance of a synchro-mesh gearbox versus a gearbox with an epicyclic third gear.
| Identifier | ExFiles\Box 15\5\ Scan242 | |
| Date | 12th February 1932 | |
| Y 7310. To R.{Sir Henry Royce} From Hs.{Lord Ernest Hives - Chair} c. to Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} c. to R.{Sir Henry Royce} Hs.{Lord Ernest Hives - Chair} c. to Ry. Hs.{Lord Ernest Hives - Chair}5/WJ.12.2.32. P.2 GEARBOX WITH EPICYCLIC THIRD. In my report of yesterday ref: Hs.{Lord Ernest Hives - Chair}2/WJ.11.2.32., I omitted to mention one point where the synchro mesh box is definitely better than the gearbox with the epicyclic third. If the car is stopped at a traffic light it is necessary to get away on 2nd. speed. With the synchro-mesh there is an easy change from second to third, and from third to top. On the gearbox with the epicyclic third there is no easy change from second to third. Hs.{Lord Ernest Hives - Chair} | ||