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).
Proposal for a combined direct, electric, and mechanically geared change gear system.
| Identifier | WestWitteringFiles\V\October1930-February1931\ Scan050 | |
| Date | 30th October 1930 | |
| X523 DA.{Bernard Day - Chassis Design} ) FROM R.{Sir Henry Royce} (DA.{Bernard Day - Chassis Design} is crossed out) HS.{Lord Ernest Hives - Chair} ) BY.{R.W. Bailey - Chief Engineer} ) (BY.{R.W. Bailey - Chief Engineer} is crossed out) C. to = SGR. (crossed out) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} to PN.{Mr Northey} C. to Mr. CLAREMONT R2/M14.10.30. (DESPATCHED 30. 10. 30.) CHANGE GEAR - COMBINED DIRECT, ELECTRIC, & MECHANICALLY GEARED. ORIGINAL VS{J. Vickers}-3. Since the engine revs. have increased by about 100% in 20 yrs. it seems much more possible now to have electrical combination in the transmission, and I give a scheme which might be better than the Daimler/Wilson fluid/gear arrangement. It consists of - CLUTCH. { (Dynamo field instead of flywheel. { Armature ----- clutch.driven part. ELECTRO MOTOR. (Motor for supplying extra torque for 3rd. and 2nd. speed. GEAR. (The 1st. speed and reverse to be by gears (epicyclic or spur type.) This is not the usual electrical transmission, which is very much heavier, but an electro magnetic clutch giving once engine torque direct to transmission, which is increased to 1.4 and 2 engine torques by electro motor fed by current from the clipping clutch, which is further increased to 3 and 4 engine torques to emergency gear and reverse by gearing. If good this would have some definite advantages over the fluid flywheel, which only gives engine torque to transmission. Will Mr. Day make estimates and sketch for an inexpensive provisional protection, if found novel. R.{Sir Henry Royce} RECEIVED 31 OCT 1930 H~ | ||