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 of road wheel dynamometer power curves in direct gear.
Identifier | ExFiles\Box 109\4\ scan0098 | |
Date | 15th June 1939 | |
ROAD WHEEL DYNO. POWER CURVES DIRECT GEAR SHEET 1 CHASSIS: 30 G VII ENGINE UNIT: B 80 Nº I AXLE RATIO: 9.37 TESTS RUN ON: 6.50 x 16 DUNLOP TRACK RACING TYRES @: 45 LB/IN² A: COMPLETE MOTOR CAR - BUICK AIR & EXHAUST SILENCERS. B: FAN REMOVED C: AS A BUT WITH CARB NEEDLE SEATING INCREASED FROM .112" DIA. TO .140" DIA. D: EXHAUST SILENCER REMOVED LEAVING MANIFOLDS ONLY. No FAN. .140" DIA. CARB. NEEDLE SEATING. E: TEST BED CLUTCH H.P. WITH BUICK AIR & EXHAUST SILENCERS FITTED. LEFT AXIS: B.H.P. CORR. TO 50°C AIR TEMP. BOTTOM AXIS: ENGINE R.P.M. RIGHT AXIS: APPROX. M.P.H. IN DIRECT GEAR USING 7.50 x 16 TYRES. RM{William Robotham - Chief Engineer}/TAS{T. Allan Swinden}/15.6.39 | ||