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).
Introduction of a balancing cam on the 20/25 model and its effect on timing gear rattle.
| Identifier | ExFiles\Box 136\1\ scan0111 | |
| Date | 14th November 1933 | |
| X411 To Wor.{Arthur Wormald - General Works Manager} from Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}; c. E.{Mr Elliott - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} c. Hd.{Mr Hayward/Mr Huddy} Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}/2/KT.14.11.33. BALANCING CAM ON THE 20/25. With reference to Hd{Mr Hayward/Mr Huddy}10/MW.4.11.33. We are in complete agreement with Hd.{Mr Hayward/Mr Huddy} that it will be necessary to maintain the present quality of timing gears after the introduction of the balancing cam. Our experience has shewn us that while this device will remove the last trace of rattle which otherwise cannot be eliminated, it will not cure a bad set of gears. Actually on Mr.Bruce's car the rattle persisted after the balancing cam had been fitted until we took a small amount of end play out of the dynamo pinion. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||