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).
Testing plunger springs and alternatives for gear synchronization involving different cam angles and rollers.
| Identifier | ExFiles\Box 178\4\ img074 | |
| Date | 1st May 1932 | |
| Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}1/AD7.5.32 contd. -2- We therefore tried plunger springs 1 1/2 times the standard strength. With thick oil in the box the cones were unable to synchronise third speed but on using a lower level of engine oil the change was quite good provided one did not change too quickly when, of course, the gears could be crashed. This allows us the alternatives of using a small cam angle 10 or 15° or rollers in the plungers in conjunction with stronger springs. Hs{Lord Ernest Hives - Chair}/cry. | ||