Issues with Peregrine piston stiffness, comparing it to other models, and proposing a more flexible design.
| Identifier | ExFiles\Box 2\1\ B002_136 137-page03 | |
| Date | 2nd August 1932 | |
| To E. {Mr Elliott - Chief Engineer} from Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} *136- STIFFNESS OF PISTONS When we were in trouble with the Peregrine(Experimental Bentley car never produced / Aero Engine) piston tightening up, we started to some tests to ascertain if the Peregrine(Experimental Bentley car never produced / Aero Engine) piston was very much more rigid than the 25 HP. or the 40/50, and the attached print shows the results obtained. Since this time we have increased the clearance of the Peregrine(Experimental Bentley car never produced / Aero Engine) piston slightly and have not had very much more trouble. The results seem to show, however, that the Peregrine(Experimental Bentley car never produced / Aero Engine) is definitely somewhat stiffer than the other pistons relatively, particularly at the top of the skirt where the gudgeon pin exe(Aero Engine)rts the major influence on it, and we think it is well worth trying out something rather more flexible. We should be glad to have particulars of anything you propose to instruct. Print Hs. {Lord Ernest Hives - Chair} 686 attached. 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).