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).
Chassis design, covering lubricated springs, torque tubes, and electrical installation.
| Identifier | ExFiles\Box 28\4\ Scan185 | |
| Date | 19th July 1920 | |
| Contd. -4- R6/G7/19.20. the rush for output prevented these being fitted (as they required more time and testing) My impression is that with the lubricated springs (see other note why lubricated) they are an absolute necessity, and should be fitted somehow. How much the thinner leaf springs will improve this point remains to be tested. In the meantime, with light cars and no rear passengers, use canvas type only moderately inflated, Further experiments are in hand on this point! This transmission knock is (as anticipated seven years ago) quite absent in the Hawk Northcliffe chassis, as this has parallel control, which in our new designs we are approaching as near as seems practical. The few makers who had parallel control have abandoned it for the more practical torque tube or torque rod control which we used. You will remember also how I always strive in our designs to obtain the longest torque tube possible (whereas Hispano and others recently do not make theirs as long as they easily might) but we are limited by our present large size of gearbox and method of construction of other parts. In our new chassis we shall not suffer these disadvantages and we are adopting the best possible scheme from this point of view, of any torque tube or rod arrangement. ELECTRICAL INSTALLATION. We have already sent to Derby, drawings of dis-tributing board and diagram of wiring, F.R. design with fuses for all the circuits; this will meet OY's suggestions just received. The present scheme, except for - Contd. | ||