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).
Defect in the ground tooth form for 20 HP chassis gears and the implemented solution.
| Identifier | ExFiles\Box 6\4\ 04-page216 | |
| Date | 1st May 1929 | |
| Y5310 S.C. L. S.C. Ba. C.S. C. SS.{S. Smith} C. Wom. c. Hs.{Lord Ernest Hives - Chair} BY/G.1.5.29. ---------------- 20 HP. CHASSIS - GEAR TEETH. Referring to RY/M27.4.29, we had noticed the defect you refer to in producing the ground tooth form, and had already impressed the importance of this point upon the Gear Grinding Co. who produce the gears in question. We had suggested and they had agreed to a scheme by which the radius at the root of the tooth as formed on the grinding wheel is produced continuously with the tooth flank on their pantograph attach-ment, under which circumstances of course no line appears. We have already cleared the matter up on the aero engine gears, and further deliveries of the 20 HP. will be clear of this fault. BH BY.{R.W. Bailey - Chief Engineer} | ||