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).
Modifications to an aluminium crankcase to address engine roughness.
| Identifier | ExFiles\Box 91\1\ scan0298 | |
| Date | 26th May 1936 | |
| To RHC.{R. H. Coverley - Production Engineer} X300 Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}8/KW.26.5.36. Engine Roughness. We understand the cast-iron box section crankcase has been cast. Will you please now use this pattern to obtain an aluminium crankcase with the two following further modifications :- (1) A rib each side along the top of the crankcase, as shown on the plasticine model in our office. (2) The whole of the rear wall and clutch pit moved back 1/4" so that we can use a crankshaft having a standard length of crankpin and not be restricted to narrow pin shafts. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||