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 for engine and transmission components, detailing the clutch casing, crankshaft, flywheel, starter motor, and bearings.
| Identifier | ExFiles\Box 126\5\ scan0138 | |
| Date | 8th March 1938 | |
| - 2 - A sheet metal pressing bolted between the clutch casing and crankcase forms the closure for parts of the clutch casing, and an arm welded on one side forms a torque arm. See sketch SS.{S. Smith}31. CLUTCH CASING. Clutch casing is in cast aluminium and is strengthened by seven small webs at gear box end. CRANKSHAFT. (Ex.S.788 and SS.{S. Smith}84 - S.CD.729). Material - High Carbon Steel. 7 Bearings 2.480 dia. (See under bearings). Crank Pins 2.086 dia. Balance weights solid on all webs. FLYWHEEL. (SS.{S. Smith}32 and 33). 13.075 Outside Diameter. Starter Ring 103 Teeth. 10" Borg & Beck clutch. Inertia Flywheel 680 lbs/ins.2 Clutch 250 " Total 930 " See sketch SS.{S. Smith}33 attached. STARTER MOTOR. Type - Lucas 12 volt. Pinion o/dia. 1.5625 Root/Dia. 1.125 No.Teeth 11. BEARINGS. (SS.{S. Smith}15). Steel Shells - white metal lined, with locating tabs fitted in notches. Vanderbilt type. No.1 2.479 Dia. x 1.250 wide. No.2 2.479 Dia. x .850 wide. No.3 2.479 Dia. x .850 wide. 8 MAR 1938 | ||