Slow running issues on a Peregrine engine due to camshaft overlap, with a new timing diagram.
| Identifier | ExFiles\Box 169\4\ img255 | |
| Date | 24th March 1933 | |
| mis. R:C. from Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} Hs {Lord Ernest Hives - Chair} /Rn. {Mr Robinson} 1/KT.24.3.33. We are in trouble with the slow running on PeregrineExperimental Bentley car never produced / Aero Engine. This is because we have too much overlap on the camshaft. Will you please make up a camshaft with the cam form to Lec.3223, the angle between the cams being 111°, which should give the timing shown below. [Diagram showing cam timing with labels: T.D.C 2°, Ex 44°, IN 42°] Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - 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).