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).
Technical report page detailing spring drive characteristics, propeller shaft weights, and notes on the lighting circuit.
| Identifier | ExFiles\Box 125\2\ scan0056 | |
| Date | 14th June 1929 guessed | |
| contd :- -11- for this purpose. We think the most probable reason for its use is the elimination of transmission rattles, which might otherwise have been transmitted through the flywheel, which is of such low inertia. Some time ago we tried locking it up to see if it brought up torque reaction periods. All we could detect was slight rattles on the overrun, which at the time we attributed to our method of locking. Subsequent experiences on RR. cars have suggested the above explanation. The characteristics of this spring drive are : Friction setting 29 lbs. ft. Torque due to springs alone, on stops. 131 lbs.ft. Torsional rating of springs 3,500 lbs.ft/radian. PROPELLER SHAFT. This is open, and tubular, with welded-in steel ends. Weights of shafts complete with universal joints and bolts are : 20 HP. 24 lbs. 13 ozs. Chrysler. 18 lbs. 8 ozs. S.S. 35 lbs. 13 ozs. The universal joint used is shewn in fig. 7. These appear simple and very light but have only line contact round the driving spheres. They should be good for oil-tightness. The shaft is located endwise by the two coil springs, which also allow for end movement. LIGHTING CIRCUIT. A current limiting relay is provided which... | ||