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).
Comparison of five alternative balance weight schemes for a crankshaft.
| Identifier | ExFiles\Box 14\2\ Scan113 | |
| Date | 2nd April 1931 | |
| ALTERNATIVE BALANCE WEIGHT SCHEMES A .866W .866W W .866W .866W B .433W .433W .433W .433W C .500W .250W .750W .580W D .580W .250W .250W .250W .1250W .580W E .580W .500W .580W .500W .500W .500W .500W W IS THE EQUIVALENT OUT OF BALANCE WEIGHT AT CRANKPIN RADIUS - PER CRANK A.{Mr Adams} 4 WTS, BALANCING COUPLE ONLY. B. 8 " " " " C. R'S LATEST SCHEME. D.{John DeLooze - Company Secretary} CHRYSLER SCHEME. E.{Mr Elliott - Chief Engineer} ORIGINAL W.W. SCHEME. TSA 2/4/31 | ||