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 detailing crankshaft bearings, engine speeds, fluid capacities, and gear ratios.
| Identifier | ExFiles\Box 91\1\ scan0190 | |
| Date | 3rd January 1936 | |
| -2- Crankshaft Bearings :- Length Diameter (1) 2.625" 1.5" (2) 1.00" 2.25" (3) 1.00" 2.25" (4) .625" 2.25" (5) 1.875" 1.25" Timing chain: width 1.500" - 104 links, automatic adjustment. Angle between cylinders 67 degrees. Ratio, starter to flywheel: 11.6 : 1 Engine speed - V-12 - 136 with axle ratio 12 x 55 - 25 M.P.H. = 1280 r.p.m. 50 " = 3075 " 80 " = 4100 " Chassis side members 9" deep, .1563" thick. Shock absorbers - automatic, double acting, hydraulic. Thermostatically controlled. Capacities - Water - 8 galls. Engine oil - 13 quarts Gearbox - 6 pints Axle - 6 pints Petrol - 20 galls. Gear Ratios: Top 4.58 to 1 (12-55) 2nd 8.15 to 1 Low 13.35 to 1 Rev. 15.71 to 1 | ||