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).
Bentley gearbox complaint regarding third gear trouble when hot.
| Identifier | ExFiles\Box 131\4\ scan0054 | |
| Date | 13th February 1937 | |
| HOTEL DE FRANCE. CHATEAUROUX. Indre. France. 1113 Rm{William Robotham - Chief Engineer}/GWH{George W. Hancock - Head Chateauroux}/7/JAB. 13th February 1937. To. Rm.{William Robotham - Chief Engineer} c.c. RHC.{R. H. Coverley - Production Engineer} BENTLEY COMPLAINT. While in Paris, a complaint case came in of third gear trouble. When the box was hot, the third gear could not be engaged and difficulty was met in getting the change speed lever back to neutral. I got Scholes to dismantle the box, and the trouble was found to be due to the tightness of the engaging teeth of the 3rd gear inside the cone. The male 3rd gear teeth on the synchromesh sleeve would enter in one position only, in any other position, the teeth were binding. Three new male third gears were tried, but none would engage correctly, proving that the inner serrations of the third gear was at fault. To make the job right, the male and female serrations were lapped in. ----------------- Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} | ||