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).
Specifications for springs, clutch, steering wheel, and engine components.
| Identifier | ExFiles\Box 126\3\ scan0031 | |
| Date | 3rd January 1935 | |
| -3- Hs{Lord Ernest Hives - Chair}/FD.{Frank Dodd - Bodies}15/KW.3.1.35. Springs. Front 42" long 2.25" wide No. of leaves 14 all bodies Rear 58" long (V-12 - 136) 62" long (V-12 - 145) 2.5" wide No. of leaves 8, 9, or 10, depending on type of body. Clutch - single disc dry plate type. Dia. of steering wheel - 19". 3-spoke, steel core. Engine firing order - 1, 4, 9, 8, 5, 2, 11, 10, 3, 6, 7, 12. Weight of crankshaft - 80 lbs. " " con. rod - 2 lbs. 2.5 ozs. " " piston - 12.5 ozs. | ||