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).
Amended list of critical speeds for the Bensport crankshaft.
| Identifier | ExFiles\Box 85\5\ scan0017 | |
| Date | 6th July 1932 | |
| X21T. R.{Sir Henry Royce} From Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} c. to E.{Mr Elliott - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}19/MA. 6.7.32. BENSPORT CRANKSHAFT. We send you herewith an amended list of the critical speed of various crankshafts for this engine including that with a 4" stroke. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||