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).
Flywheel balancing issues, requesting that the complete assembly be tested on knife edges before engine fitting.
| Identifier | ExFiles\Box 85\2\ scan0136 | |
| Date | 1st January 1935 | |
| To RHC.{R. H. Coverley - Production Engineer} x212 Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}18/KW.1.1.35. Flywheel Balance. We find we have been misled recently during tests on flywheel vibrations by the flywheels themselves not being in static balance. B-1 unit at present in 5-B-IV was several ounces out of balance at the periphery of the flywheel. Can you please in future always test the complete assembly of crankshaft, flywheel and clutch on knife edges before fitting to an engine. It is essential that for our test of the thinned disc flywheel on B-9 unit the parts should be in balance. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||