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).
Failure of chain drives and proposing a switch to aluminium alloy timing gears for cast iron engines.
| Identifier | ExFiles\Box 124\2\ scan0244 | |
| Date | 10th October 1940 | |
| HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm.{William Robotham - Chief Engineer} 1044 file B.60 + B.80 engines Rm.{William Robotham - Chief Engineer}10/ML.10.10.40. TIMING GEARS - CAST IRON CAR ENGINES. The chain drives on our rationalised car engines have proved to be a failure. We should like to replace them with timing gears in aluminium alloy, which are being used extensively in the States. Six gears should keep us going till the end of the war. Do you consider that there is any prospect of us being able to get six gears cut in the Works without causing too much disturbance. The tooth form would be, of course, as on the textolite and steel gears that had previously been used, and therefore the necessary cutters would be in existance. Rm.{William Robotham - Chief Engineer} | ||