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).
Schematic of a rig for testing the working efficiency of the Lockheed hydraulic brake system.
| Identifier | ExFiles\Box 120\3\ scan0034 | |
| Date | 23th November 1932 guessed | |
| F = GOOD FINISH O = ROUGH " G = GROUND " ⊕ = MACHINE ALL OVER FRACTIONAL DIMENSIONS ± .005 UNLESS OTHERWISE STATED. ALL CORNERS FREE FROM FRAISE. ALTERATION NO. PRESSURE GAUGES A B 2 WHEEL CYLINDERS 1" DIA 3 - 16 1/2" HOSES. 12' COPPER TUBING 1/4" DIA. PRESSURE APPLIED PEDAL RATIO = 6 to 1 1" BARREL TYPE CYLINDER LOCKHEED HYDRAULIC BRAKE CO. LTD. LEAMINGTON SPA. DRAWN H-LB PASSED RER RIG FOR TESTING THE WORKING EFFICIENCY OF THE LOCKHEED SYSTEM DATE ISSUED SPECIFICATION MATERIAL NO. OFF PER SET XP126 | ||