Proposal to modify crankshaft lubrication by increasing the number of oil holes in the journals from one to three.
| Identifier | ExFiles\Box 2\3\ B002_X 116 117 119 120-page23 | |
| Date | 9th February 1933 | |
| COPY. X 117. Hs. {Lord Ernest Hives - Chair} C. RHC. {R. H. Coverley - Production Engineer} BY.1/G.9.2.33. T4173 x76'0 x76'0 LUBRICATION OF CHASSIS CRANKSHAFTS. I would suggest that before we put a modification through to increase the number of holes in the journals from 1 to 3 per journal that it would be advisable to try it on Peregrine(Experimental Bentley car never produced / Aero Engine) and Bensport(Codename for 3 1/2-litre Bentley) cranks in the first place. I am therefore holding up the alteration until you have checked that there is no chance of over-oiling occurring. Personally, I think that the quantity of oil thrown about will not materially increase, if it does, it might then mean that we could work with slightly less clearances, but with a very plentiful oil supply. BY. {R.W. Bailey - Chief Engineer} | ||
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).