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).
With calculations for vehicle dynamics, specifically braking ratios and front skid safety factors.
| Identifier | ExFiles\Box 121\1\ scan0204 | |
| Date | 4th February 1940 guessed | |
| and this gives 4. (2(μRʀ + μRꜰ) + 5 Rʀ - 5 Rꜰ) / (Rʀ + Rꜰ) = W. 2W + 5Rʀ = 5Rꜰ Also 7W = 10Rꜰ - 10RF So that during an all out stop we would require F/R of 2.3/1 Now if you use a lever ratio of 1.75/1 the actual ratio you get is 1.53/1 which is not excessive, & gives ample safety factor against front skid Just before war we were trying hard to get a car so fitted but there was | ||