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 crankcase, oil pump, and connecting rod including dimensions and weights.
| Identifier | ExFiles\Box 116\1\ scan0137 | |
| Date | 1st September 1937 guessed | |
| 2 Crankcase (cont) width of oil grooves in bearing supports Front = .250 wide 2nd = .375 " 3rd = .375 " rear = .375 " Diameter of oil feed holes from crankcase to bearings = .350 dia Wt. of crankcase & cylinder block = 139.5 lb. Oil pump & Oil Flows Pump has cast iron casing with duralumin gear Oil pressure 40 - 60 lb / sq" Oil flow at 2000 engine rpm 50lb / sq" pressure and 50°C = 276 galls / hr. Oil flow through bearing at 50 lb / sq" pressure = 10.0 to 10.7 galls / hr. Connecting Rod Steel forging machined on necessary portions only White metal bearing; metal run directly on to rod, no liners used. No oil supply to Gudgeon pin Wt = 1.937 lb. (approx) complete | ||