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).
Potential faults and cures for a gearbox, referencing pinions, reverse gear, and a new three-speed box design.
| Identifier | ExFiles\Box 6\4\ 04-page040 | |
| Date | 29th January 1923 guessed | |
| -2- prove by making two pinions, one with keys only under the second, and another with keys only under the first. The reverse might be cured by stopping the roll at the small gear end by converting this into a slide i.e., a stationary shaft and possibly a loose bush to prevent seizing. I am very concerned about this moving out of the gears. I may be all wrong, especially as the 40/50 has similar 1st. and 2nd. gears which seem alright, but may be different in relative diameter of shaft and gear, and also I believe have 14 1/2D teeth, so they may bind up on the keys and stop them from creeping. The Design Committee should look into this with Mr. Stent, Mr. Bailey and Mr. Hives and send me word if they find anything. They might compare other boxes, but there must be very few with similar small pinions, but there is a Rover with a similar reverse. The new three speed box will have the same fault probably, but I do not remember the proportions. It is distressing, but I think we may find an easy cure. If not, something quite different will probably have to be made, as much care was put into this box, and I cannot blame Mr. Stent in the least, as far as I can see. R.{Sir Henry Royce} | ||