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).
Blueprint with specifications for modifying helical gear teeth to control contact patterns.
| Identifier | ExFiles\Box 170\2\ img273 | |
| Date | 21th January 1932 guessed | |
| MAIN SHAFT HELICAL GEAR TEETH TO BE MODIFIED IN THE DIRECTION TO FAVOR CONTACT SHOWN PER LIMITS OF DRAWING SPECIFICATIONS. REVERSE IDLER ALSO TO HAVE MODIFIED PRESSURES TO PRODUCE CONTACTS AS SHOWN. DRIVING SIDE. COAST DRIVING SIDE REVERSE DRIVEN SIDE | ||