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).
Weakness of the front spring under compression during braking and the excessive weight of the torque arm.
| Identifier | WestWitteringFiles\R\2October1927-November-1927\ 19 | |
| Date | 14th October 1927 | |
| To DA.{Bernard Day - Chassis Design} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG14.10.27. ORIGINAL tsarzo As you are no doubt aware, the rear end of the front spring in compression is very much the weakest link in the system of the torque control. Although, when we use the maximum braking on the front of the car i.e. we lock the front wheels, the back of the front springs assumes rather a distressing shape. Under the circumstances, it does appear to us that the torque arm and pivot itself is rather heavier than is required. You have no doubt seen the very neat and light torque arm on the Ansaldo. After all our efforts of lightening the front axle, we are very anxious to retain its low transverse moment of inertia. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||