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).
Summary of dynamometer performance, weight distribution, and consumption data for S.S. and Phantom models.
| Identifier | ExFiles\Box 18\1\ Scan027 | |
| Date | 9th July 1929 | |
| To EP{G. Eric Platford - Chief Quality Engineer} from Hs{Lord Ernest Hives - Chair}/Gy. XY840. Hs{Lord Ernest Hives - Chair}/Gyl/MJ.9.7.29 RE. S.S. XY441 XY840. The information you require as taken from our files is as follows :- (1) Dynamometer performance. Cut-Out Closed. Std.Phantom. AV.S.S. R.P.M. B.H.P. 1000 48 51.5 1250 60 63 1500 69.5 74 1750 77 83 2000 82.3 89.3 Cut Out open 2000 R.P.M. AV. Phantom 90.7 B.H.P. AV. S.S. 98 B.H.P. 3rd. Gear. AV.Phantom 85.5 BHP at 2500 RPM. AV. S.S. 96.0 BHP at 2500 RPM. (2) Unit Bed performance. We attach a power curve for 1st 6 units built in Experimental. (3) Consumption. We attach a fuel consumption curve. (4) Average Weights. Wt. Over Front Axle Weight over Rear Axle. Total Wt. Body Car 20.25 cwt. 27.5 cwt. 5300lbs. Total weight includes 2 spare wheels, no passengers, petrol and oil. Chassis. Front Rear Total 16cwt. 2qrs. 17cwt 0qrs 14lbs. 3814 lbs. 3700(another) Total weight includes no tools, petrol, oil, water, battery, instruments and two spare wheels. (5) Subframe. Weight 109 lbs. Hs{Lord Ernest Hives - Chair}/Gy. | ||