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).
Comparison between Synchromesh and Epicyclic gears.
| Identifier | ExFiles\Box 136\4\ scan0137 | |
| Date | 9th February 1937 guessed | |
| -6- Synchromesh Gear V Epicyclic Gear. As the Editor of THE MOTOR recently pointed out, a synchromesh gear is admirably suited to the preselector form of control - the synchronisers and the self-change mechanism coacting together in a manner very favourable to smooth and rapid gear changes, quite different to the somewhat violent engagement of an epicyclic gear and without the slip and slow pick-up of the latter. With synchromesh the gear change can be made either slowly or quickly and, if he so desires, a driver can use the preselector lever in much the same manner that he uses an ordinary gear lever. For example, in making a change the driver can fully depress the clutch pedal and, whilst the pedal is down, he can shift the lever into the notch of the desired gear. He can then let the pedal come up quickly or let it come up slowly with that 'feeling' sense we sometimes use in making a gear change. As the self-change spring is adjustable a driver can set it to give a very rapid change or just a normal change - according to his type of car or his fancy. By setting the preselector lever just a little in advance of the actual change, we reduce the latter to the single operation of depressing and releasing the control pedal. -oooooooo- | ||