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 end clearance and noise levels of a driven gear after a 100-hour endurance test.
| Identifier | ExFiles\Box 149\2\ scan0068 | |
| Date | 2nd June 1933 | |
| -2- RHC.{R. H. Coverley - Production Engineer}6/BE.2.6.33. It will be observed there is an increase of .0035" in the end clearance of the driven gear at the completion of 100 hours. In this condition, the gears were perfectly silent, although a very slight rattle came up at 600 r.p.m. when delivering at a pressure of 15 lbs.sq.in. This was very slight and it would be doubtful whether it would be noticeable on the chassis. RHC.{R. H. Coverley - Production Engineer} | ||