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).
Schematic drawing and calculations for crankshaft balance weight schemes.
| Identifier | ExFiles\Box 103\3\ scan0059 | |
| Date | 16th May 1931 | |
| CRANKSHAFT E 55619 SUGGESTED SCHEME SCHEME 1402 STAMP: ROLLS ROYCE LIMITED PRINT ROOM 16 MAY 31 SCHEME 1402 - I PER WEIGHT = 27.1 IN⁴ (CRITICAL SPEED) = 4200 RPM [12 WTS] SUGGESTED - " " " = 12.55 IN⁴ " " = 4600 RPM [12 WTS] WITH NO BALANCE WEIGHTS (CRITICAL SPEED) = 5000 RPM | ||