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).
P.2. Synchro Mesh Gearbox, including a modified top cover, servo damper placement, and a backing light switch.
| Identifier | ExFiles\Box 179\1\ img156 | |
| Date | 8th December 1931 | |
| GX PT. FROM DA.{Bernard Day - Chassis Design} C. to SC. HS.{Lord Ernest Hives - Chair} P. 2. SYNCHRO MESH GEARBOX. DA{Bernard Day - Chassis Design}2/M8.12.31. X7310. Herewith we send N. sch. 3389. - Clutch Pit and Servo Damper in connection with the above gearbox. It will be noticed that we have modified the top cover as compared with the original scheme. We are using the present standard cover exactly. Would you please confirm that there is no need to reach the nuts of the fabric coupling through this cover. We have investigated the question of putting the damper in the same position as on the 25HP. but it does not come in conveniently, and we prefer it as shown here. We do not think it should be necessary to lock the knurled nut closing the end of the damper cylinder. With this drawing it is not our intention to send you any more information regarding the P. 2. synchro mesh gearbox, clutch pit, etc. We believe you have enough to enable you to set out those parts we have not dealt with, such as the automatic lubrication of the clutch spigot, lubrication of the thrust bearing, etc, etc. There is one design point which may require attention, and that is the backing light switch, but on that point we are awaiting an answer from you. DA.{Bernard Day - Chassis Design} | ||