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).
Responding to queries about J.S. Type dampers, including modifications and test results.
| Identifier | ExFiles\Box 105\3\ scan0323 | |
| Date | 29th March 1933 | |
| X5520 Hdy.{William Hardy} from Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} c. Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} c. E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} c. Ey. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} 2/KT. 29.3.33. -------------------- DAMPERS - J.S. TYPE. With reference to HDY{William Hardy}1/M27.3.33. Answering your queries :- (1) As you surmise, we hope to bring the modification to the transfer passage in at a later date. (2) We will carry out a test deleting the steel bushes. (3) We are now looking into this modification. (4) 25 HP. rear dampers. (5) We agree with your remark. (6) The internal coring for strength - we broke a damper across one of the bosses with the two bolt fixing. (7) We can increase the thickness of the rear damper casings, but the 25 HP. and 40/50 HP. are not interchangeable. We have not had any failures since the castings were modified. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||