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).
Test results for dampers on front brake drums.
| Identifier | ExFiles\Box 66\5\ scan0084 | |
| Date | 22th December 1926 | |
| BY. {R.W. Bailey - Chief Engineer} from Hs. {Lord Ernest Hives - Chair} X8420 Hs {Lord Ernest Hives - Chair} 2/LG22.12.26. C.2. SERIES - DAMPERS ON FRONT BRAKE DRUMS. X8420 K4612 Replying to BY15/H20.12.26. From our test we believe that the .025" shoulder will be sufficient to keep the brake drum dampers in position. We have revolved a wheel fitted with these dampers at a speed equal to 110 m.p.h. and there was no sign of the dampers leaving the drum. This means that there is a bigger margin than there is on the dampers fitted to the rear of the 20 HP. Hs. {Lord Ernest Hives - Chair} | ||