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).
Specification sheet with a diagram and calculations for front and rear brake systems.
| Identifier | ExFiles\Box 120\2\ scan0334 | |
| Date | 10th June 1938 | |
| -5- Blueprint diagram values: 13 925 4 5 1 35 1 725 1 85 1 85 1 42 3 85 Front Brakes. (13.925 x 1.35 x 3.25 x 1.23 x 4 x 1.7) / (4.5 x 1.725x 1.42 x .785) = 59.2 : 1 Wrapping coefficient = 1.7 Master cylinder 1.00" dia. Wheel cylinders 1.25" dia. New floating lever 3.25" x 1.42" centres. Rear Brakes. Servo multiplication with RAD.13 linings. Cam angle 35º S = (2 x .36 x 2) / (.4 x 4) = 2.94 " " 40º S = (2 x .36 x 2) / (.7 x .84) = 2.45 " " 45º S = (2 x .36 x 2) / (.7 x 1) = 2.06 | ||