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).
On braking system difficulties, weighing the loss of pedal movement against the squeak-elimination benefits of the Hancock brake shoe.
| Identifier | ExFiles\Box 102\3\ scan0078 | |
| Date | 23th November 1932 | |
| Da.{Bernard Day - Chassis Design} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} 85360. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}11/MA.23.11.32. Attached is a copy of a note from Mx.{John H Maddocks - Chief Proving Officer} and our reply. As long as we have a braking system which utilises as an insurance enough direct braking to enable a car to be stopped on a reasonable gradient, we shall be in difficulty with loss of pedal movement, if we retain aluminium brake shoes. We freely admit that the Hancock brake shoe has increased this trouble considerably but we cannot throw away this device because it is the greatest asset we have ever had for the elimination of brake squeaks. Hs{Lord Ernest Hives - Chair}/RM.{William Robotham - Chief Engineer} | ||