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).
Instruction to investigate cracks in a large bore Bentley crankcase by cutting it up and testing a sample.
| Identifier | ExFiles\Box 85\5\ scan0103 | |
| Date | 19th July 1935 | |
| X 217 To RHC.{R. H. Coverley - Production Engineer} c. to Lab. (Mr. Bradbury). Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}19/KW.19.7.35. LARGE BORE BENTLEY CRANKCASE. With regard to the cracks in the first of the two crankcases in B-15 unit; i.e., the one which has been photographed, will you please cut up various of the panels, in order to find out whether the cracks start at the bottom of the thread of the bearing cap studs, or in the sharp corner for the spigot of the bearing cap. Will you also please send a piece of this crankcase to Mr. Bradbury, to find out whether it was cast at the correct temperature. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||