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).
Report discussing brake adjustment for racing cars and general feedback on a vehicle's performance.
| Identifier | ExFiles\Box 19\6\ Scan014 | |
| Date | 10th March 1930 guessed | |
| -5- There is another point which is of importance and which the Writer has asked your Company to do. This is to re-adjust the brakes in such a way that the front come on before the back. At present the reverse is the case, therefore on a sudden and violent application of the brakes the car skids sideways as soon as the two back wheels become locked. In case it may be of interest to you and your Technical staff, the only possible method of safe adjustment for racing cars brakes is an adjustment by which the front come on before the back, and not the contrary. The greater stopping effect is obtained from the front two wheels, due to the centre of pressure piling up forwards, - if I may use such an expression to explain my point. In the early days of four-wheel braking on racing cars, we used to have the front wheel brakes and the back wheel brakes operated by hand and foot respectively, and many racing drivers made use of their front wheel brakes about 70% of the time and the back wheel brakes the balance, and this had to be if you wished to get the best results out of your car over the given circuit. GENERAL: This car has now completed over 3,000 miles in 27 consecutive days, and has, of course, given no trouble. The maximum honest speedometer speed appears to be 81 m.p.h. This is a little disappointing. Speeds of 90 m.p.h. have been attained, but under unfair conditions. The acceleration, either through the gears | ||