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).
Brake sponge in the Phantom III, analyzing lost movement relative to pedal pressure.
| Identifier | ExFiles\Box 92\4\ scan0190 | |
| Date | 1st August 1936 | |
| To Da.{Bernard Day - Chassis Design} x 306 Hs{Lord Ernest Hives - Chair}/AFM.{Anthony F. Martindale} 3/JH. 1.8.36. Brake Sponge - Phantom III. In reply to your Da.{Bernard Day - Chassis Design} 2/HP. 18.6.36. in which you suggest that the flexibility of the pedal assembly shaft may add an appreciable amount of sponge to the system. Converting the amount of yield in this shaft into extra pedal travel required, gives the following results :- Pedal Pressure. Lost Movement. 60 .011" 100 .014" 140 .019" 200 .021" As the rear wheels are locked with a pedal pressure of less than 100 lbs. the loss due to this is entirely negligible. Hs{Lord Ernest Hives - Chair}/A.F.Martindale. | ||