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).
Oil leaks from the clutch pit and a comparison of losses in the exhaust system.
| Identifier | ExFiles\Box 3\4\ 04-page177 | |
| Date | 6th February 1933 | |
| -2- Hs{Lord Ernest Hives - Chair}/Rs.{Sir Henry Royce's Secretary}7/TLT.6.2.33. There were bad oil leaks from the clutch pit (rear main bearing) and various other points on the unit, due, we think, partially to the absence of the carburettor air intake connection to the crankcase. We attach curves showing the losses in the exhaust system, and the advantage gained at low speeds with an earlier timing. They are comparative only, as the head on which they were taken had not been trepanned and so was about 10 B.H.P. down at the peak. Hs{Lord Ernest Hives - Chair}/Rs.{Sir Henry Royce's Secretary} Copy of Hs{Lord Ernest Hives - Chair}/Rsl/Tzz.V.26 attached to H.{Arthur M. Hanbury - Head Complaints} De. Sg.{Arthur F. Sidgreaves - MD} and K's copies. | ||