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).
Tests on achieving quiet timing gears on a Bentley and the potential use of Textolite.
Identifier | ExFiles\Box 136\1\ scan0103 | |
Date | 24th October 1933 | |
XCU To RHC.{R. H. Coverley - Production Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to E.{Mr Elliott - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}3/KT. 24.10.33. Attached are Hs{Lord Ernest Hives - Chair}/PJH's observations on tests that have been carried out to obtain quiet timing gears on the Bentley without resorting to hand stoning of the tooth form. During the last few days B.7 unit has been used for piston endurance running, but we are arranging for it to revert to timing gear tests as soon as possible so that we can finally clear up the mystery of the water pump pinion. We think it is worth while doing this before we conclude our tests on the balanced cam and the metal gears. We have come to the conclusion ourselves, however, that though we may prove that it is possible to get a quiet set of timing gears without stoning, the standard of accuracy demanded is so exceedingly high, that it is doubtful whether the Works would be able to maintain it on production. We should like to have your views on this. We want to push along the second set of Textolite gears for B.2. unit in view of this, and have asked E.{Mr Elliott - Chief Engineer} to produce the water pump pinion in Textolite. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||