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).
Broken spring replacement and servo rattle tests for Chassis 9.G.III.
Identifier | ExFiles\Box 4\9\ 09-page097 | |
Date | 25th August 1925 | |
X5840 Hotel de France, Chateauroux, Indre, France. GWH.{George W. Hancock - Head Chateauroux}I/Crn.25.8.25. To: "Hs{Lord Ernest Hives - Chair}" From: G.W.Hancock. Chassis 9 G.III. In our report to you dated the 24th inst., we have stated that the N.S.F. spring broke, and was replaced by Firths F.53585 - 650 lbs. This is one of the two springs which were sent over here. Both these springs are 650 lbs. whereas the one broken and taken off is a 600 lbs. spring. We would like to know if it is correct in fitting 650 lbs. spring, or whether these have been sent over by mistake. After fitting this spring, it has made the buffer clearance approximately 2 1/4". This, after a day's run, will probably settle down to less. We would be pleased if you would reply to our question re end play in gears. Tests were yesterday carried out per your instructions for servo rattles. Full throttle conditions, we have already sent you reports on these periods, which have not altered. The only period on retard with [xxx] shut throttle conditions is a moderate one between speeds of 47 to 40 m.p.h. Shut throttle conditions - these I take it you mean on retard only, as naturally one cannot accelerate with a shut throttle. We shall, however, try these on a down grade with shut throttle. Engine shut off in gear & in neutral. There are no rattles or periods whatsoever that we can notice. G.W.Hancock. | ||