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).
Dynamometer test chart for a Humber Super Snipe showing corrected BHP vs engine RPM.
| Identifier | ExFiles\Box 108\2\ scan0209 | |
| Date | 6th January 1939 | |
| HUMBER SUPER SNIPE DYNO B.H.P AT ROAD WHEELS BAR 755 ROAD WHEELS 6" X 16" TYRE CIRC 85.625 DIRECT-GEAR 4.09 CORRECTED 15°C 50°C 2000 R.P.M. 58.4 55.6 2500 R.P.M. 68.3 64.8 3000 R.P.M. 75.8 70.8 3500 R.P.M. 76.3 71.2 4000 R.P.M. 70.7 66.2 C.B.H.P M.P.H. ENGINE R.P.M GRAPH LEGEND: - CORRECTED 15°C -- CORRECTED 50°C RM{William Robotham - Chief Engineer}/FO DYNO BY BRAZIER. | ||