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).
Hand-drawn graph showing a possible curve of cornering force against traction and braking.
| Identifier | ExFiles\Box 170\3\ img152 | |
| Date | 21th January 1938 guessed | |
| SIR. 1. Possible curve of cornering force against traction & braking Cornering Force PIPER-TORQUE ? C.P. ? Traction 0 Braking | ||