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).
Tests to determine the efficiency of the Peregrine brake linkage.
| Identifier | ExFiles\Box 1\10\ B001_X106 TO X 110-page007 | |
| Date | 14th October 1932 | |
| x106 R.{Sir Henry Royce} From Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} C. Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} C. E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} C. Hy.{Tom Haldenby - Plant Engineer} Hdy.{William Hardy} Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}7/KT.14.10.32. PEREGRINE BRAKES. We have carried out tests to determine the efficiency of the various parts of the Peregrine brake linkage, similar to the tests on P.II. described in Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}1/LG.12.1.29. In these tests loads up to 200 lbs. were applied to the brake pedal, or the equivalent load on the servo 'T' arm, and the torque at one rear and front brake was measured. The losses therefore include those due to bearing friction in each cross shaft, and also those due to the differentials in the equalisers. These latter on the first chassis are very inefficient and we shall see whether attention to manufacturing details will improve them. Although the direct braking efficiency is only shown as .68, this would be very much higher under road conditions when, due to the brakes being correctly adjusted, there is no movement of the equaliser gears with the consequent lost effort. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||