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).
Power consumption curves for a 'Fort' Dunlop Silent Cover tyre at various speeds and pressures.
| Identifier | ExFiles\Box 45\2\ Scan223 | |
| Date | 24th January 1930 | |
| POWER CONSUMPTION CURVES FOR "FORT" DUNLOP SILENT COVER 7.00 - 21 Top Left Graph: 500 R.P.M. POWER CONSUMPTION H.P. Line Labels: 30 lbs/sq", 35, 40 Top Right Graph: 600 R.P.M. POWER CONSUMPTION H.P. Line Labels: 30 lbs/sq", 35, 40 Bottom Left Graph: 700 R.P.M. POWER CONSUMPTION H.P. Line Labels: 30 lbs/sq", 35, 40 Bottom Right Graph: 800 R.P.M. POWER CONSUMPTION H.P. Line Labels: 30 lbs/sq", 35, 40 X-Axis (bottom of all graphs): LOAD LBS. PER TYRE. X-Axis Values: 1200, 1400, 1600 Bottom left stamp: DERWENT 831H32 Bottom Right Text: E.S.D. 24.1.30. Bottom Right Mirrored Text: INFORMATION GIVEN ON THIS PRINT IS CONFIDENTIAL | ||