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).
Failure of a Bentley flexible flywheel and requesting new modified versions for continued testing.
| Identifier | ExFiles\Box 85\2\ scan0245 | |
| Date | 22th April 1936 | |
| To RHC.{R. H. Coverley - Production Engineer} X212 Hs{Lord Ernest Hives - Chair}/Gry{Shadwell Grylls}:23/KW.22.4.36. Bentley Flexible Flywheel. We think the reason that the first of these flywheels broke was that we tried to find out whether it would cope with the master period on a 6-cylinder engine, which apparently in its present form it cannot do. However, the freedom from roughness in the lower parts of the speed range make us want to continue experiments. Will you therefore please put in hand 3 flywheels to the original drawing Ex.21405, .187" in thickness, and also 3 to the attached sketch, in which the width of the spokes has been increased and they have been saw-cut to reduce the stresses. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||