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).
The condition and performance of various vehicle mechanisms.
| Identifier | ExFiles\Box 4\9\ 09-page035 | |
| Date | 21th June 1928 guessed | |
| - 6 - Change gear mechanism. This is much freer, & we have no binding effect. We experience no difficulty now in changing gear. Servo & servo gears. The servo has functioned O.K. The Servo gear rattles have become worse, the periods being on acceleration, 19 to 26 m.p.h., 24 m.p.h. being the maximum, then again at 46 to 47 m.p.h. On the overrun they start at 47 m.p.h., max. 44 m.p.h., and do not die out entirely until 32 m.p.h. is reached. We have investigated the servo drive, and although there has been no appreciable wear taken place on gear wheel, we have noticed that there is a blackness in the ball race (Hoffmann No. 5037) This is a sliding double thrust race allowing for end play. We do not need this end play. We did not notice this blackness when we sent our previous report. Pedals "D" type to M.O.P. F.{Mr Friese} 53506 - spring F.53534 fitted to brake pedal. Slight wear has taken place in these bearings. Starter motor. There has been several times when this has not engaged on first application, the motor spinning round without the sprocket engaging. We have had this down, but cannot find any cause for this trouble. We got a leak of oil from the rear cover of housing. This is due to the action of flywheel piling up the oil at this side. The oil is coming from behind flywheel, as stated previously. Condition of starter motor is O.K. Rear axle. This has not altered since our last report. It appears to be quite O.K. Rear brake mechanism. & drums. We dismantled the two rear drums. These are still in a good condition, as also are the brake shoes, toggles, toggle bearings and countershafts. Rear road springs & shackle bearings. These appear to be in good condition from an outside examination. Rear shock absorbers. These have functioned O.K. since our last report. | ||