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).
Sketch of balance weights used on the big pin 25 HP crankshaft.
| Identifier | ExFiles\Box 103\3\ scan0071 | |
| Date | 23th July 1931 | |
| To E.{Mr Elliott - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} γ5010. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}6/MJ.23.7.31. Herewith sketch of the balance weights we used on the big pin 25 HP. crankshaft to balance both big ends and crankshaft and crankshaft details. The method of attachment is the same as in Sch.1402. Hs{Lord Ernest Hives - Chair}/H.Grylls. | ||