Graph showing the efficiency of brake toggles for a Bentley, with an oily brake drum.
| Identifier | ExFiles\Box 92\4\ scan0042 | |
| Date | 21th December 1934 guessed | |
| EFFICIENCY OF BRAKE TOGGLES, ETC. (BENTLEY) DEFLECTION OF BRAKE SHOES AT TOGGLE PIVOTS 1/1,000" 'S' MOVEMENT % EFFICIENCY EFFICIENCY LOAD DECREASING 100% EFFICIENCY LINE LOAD INCREASING BRAKE DRUM OILY ZERO LOAD ON SHOES = WT OF WEIGHT PAN. EFFICIENCY AT " PULL OFF SPRING LOAD " = 46% " MAX LOAD (500 LBS) " = 72% LBS - LOAD APPLIED AT LAST EXTERNAL 3.5" CENTRES LEVER. | ||
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).