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 engine speeds, capacities, gear ratios, and other vehicle characteristics.
| Identifier | ExFiles\Box 127\2\ scan0025 | |
| Date | 8th May 1937 guessed | |
| - 2 - Engine Speed: With standard rear axle ratio (12-55). 25 m.p.h.- 1250 r.p.m. 60 m.p.h.- 3000 r.p.m. 90 m.p.h.- 4500 r.p.m. Shock Absorbers: Double-acting hydraulic. Capacities: Cooling system........... 8 1/2 gallons. Crankcase.............. 12 quarts of oil. Transmission............. 2 quarts gear lubricant. Differential............. 6 1/2 pints gear lubricant. Fuel tank.............. 28 gallons. Engine to Wheel Speed Ratios: Figures based on standard ratio (12-55). High 4.58 to 1. Second 8.15 to 1. Low 13.35 to 1. Reverse 15.7 to 1. Rear Axle Ratios: 12-55 11-54 13-55 (4.58 to 1) (4.90 to 1) (4.23 to 1). (12.55 furnished unless otherwise specified). Springs: Front Length 42" Width 2 1/4" No.of leaves 14. All body types. Rear Length 62". Width 2 1/2". No.of leaves 8, 9, or 10, depending on type of body. Clutch: Double-disc dry-plate type. Diameter of Steering Wheel: 19", steel core type. Turning Radius: Right-25'8". left 25'10". Engine Firing Order: 1-4-9-8-5-2-11-10-3-6-7-12. Right block (number from front) 2-4-6-8-10-12. Left block (number from front) 1-3-5-7-9-11. All Bulbs: Single contact, same C.P. as V-8. Oil Specifications: Engine Winter: In range of S.A.E. No.30. Summer: In range of S.A.E. No.40. Transmission and Rear Axle. Winter: S.A.E. 90 F.W. Summer S.A.E. 110 F.W. | ||