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).
Letter to the Automotive Products Company detailing brake system tests carried out on a 1932 Morris Cowley.
| Identifier | ExFiles\Box 120\3\ scan0028 | |
| Date | 18th October 1932 | |
| X 4456. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}5/KT. Oct. 18th, 1932. Automotive Products Company, Brock House, Langham Street, London. W.1. Dear Sirs, We thank you for your letter ref. EBB/EA of the 17th inst, and in reply would tell you that our tests were carried out on a 1932 Morris Cowley, that has done a few thousand miles. Our test was carried out as follows. Loads up to 125 lbs. were applied by a spring balance at a given radius and at right-angles to the brake pedal. An additional small piston was inserted in a front brake cylinder, the effort at this piston was made to lift weights by a right angle lever mounted on a knife edge. An article published in the S.A.E. Journal gave the efficiency of the hydraulic brake system as 82% but in our tests we did not attain this figure. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||