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 table of flywheel and clutch specifications for the EAC and 40/50 HP models.
| Identifier | ExFiles\Box 66\4\ scan0010 | |
| Date | 16th February 1925 guessed | |
| EAC. 40/50 HP. DISTANCE BETWEEN SUPPORTING WIRES. 1.166 ft. 1.166 ft. LENGTH OF WIRES. 6.644 ft. 6.839 ft. WEIGHT OF FLYWHEEL COMPLETE WITH CLUTCH. 168.25 lbs. 114.44 lbs. TIME FOR 30 OSCILLATIONS. 75.6 secs. 82.0 secs. .. TIME FOR 1 OSCILLATION - 2.52 secs. 2.73 secs. (RAD. OF GYRATION)² OR K². .265 ft² .303 ft² .. RAD. OF GYRATION. .514 ft. .550 ft. MOMENT OF INERTIA = W/g K² = 1.385 units. 1.076 units. Hs{Lord Ernest Hives - Chair}/ACL. | ||