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).
Preliminary test results of new shock absorbers, comparing them to the performance of original plates.
| Identifier | ExFiles\Box 78\2\ scan0172 | |
| Date | 23th July 1919 | |
| To R.{Sir Henry Royce} from EH. c. to CJ. c. to Bn.{W.O. Bentley / Mr Barrington} c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} X.3461b EH5/LG23.7.19. RE NEW SHOCK ABSORBERS. X.3461. B One set of the new type shock absorbers have run about 1000 miles on 1 EX chassis and another set have run about 900 miles on 49-GB. The preliminary tests on these shock abosrbers gave us the impression that the maximum friction did not come into action soon enough. Below is a table which shews the movement on the end of the lever when the different stages of friction come into action. No. of plate. Original plate. New Plate. Remarks. 1 .890 .860 Free movement before shock absorber comes into action. 2 3.700 1.800 -- 3 6.380 3.200 -- 4 8.480 4.570 -- The other column also shews the movement with some new plates which we made and fitted to 49-GB. We think that the new plates give us much better results than the original ones but we are not in a position yet to say that they are the best which can be done. We have examined the shock abosrbers on 49-GB since the run and find that there si not the least sign of the plates cutting into the rotor or any burrs on the plates themselves. | ||