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).
Graph determining the air space in cylinder blocks based on header tank height and engine tilt for F.S. F. M/S engines.
| Identifier | WestWitteringFiles\V\December1930-February1931\ Scan176 | |
| Date | 11th December 1930 | |
| INSTALLATION TESTS. CURVE 200F AIR SPACE IN CYLINDERS. F.S. F.{Mr Friese} M/S ENGINES. TO DETERMINE THE AIR SPACE IN CYLINDER BLOCKS FOR WHEN THE HEADER TANK IS AT VARIOUS HEIGHTS ABOVE CRANKSHAFT CENTRE LINE & JUST BEHIND THE ENGINE, TAKING FOR A BASIS THE AVERAGE DISTANCE OF THE HART, FURY & SHORT TANKS, FROM THE VERTICAL CENTRE LINE OF THE ENGINE. AIR SPACE - GALLS. HEIGHT FROM CRANKSHAFT C.L. TO DEAD CENTRE OF HEADER TANK MEASURED FROM VERTICAL CENTRE LINE OF ENGINE. DEAD CENTRE OF HEADER TANKS. MEASURED FROM CRANKSHAFT C.L. 27" AVERAGE DISTANCE OF HART & FURY HEADER TANKS. (CENTRES). 25" 23" 21" 19" 17" 15" 25" EXAMPLE:- WATER LEVEL IN TANK 21" ABOVE CENTRE LINE OF CRANKSHAFT. THE AIR SPACE WHEN ENGINE IS TILTED 7.5°, 15° OR 20° WOULD BE:- .325 1.250 OR 2.175 GALLS. RESPECTIVELY. ENGINE FULL T.A. GIBSON. | ||