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 Engine RPM vs Road Speed for a New Safety Stutz (1927) 8 Cylinder car.
| Identifier | WestWitteringFiles\R\2December1927-February1928\ Scan120 | |
| Date | 3rd April 1928 | |
| NEW SAFETY STUTZ (1927). 8 CYLINDER. ENGINE R.P.M. FOR ROAD SPEED. EFFECTIVE CIRCUMFERENCE OF ROAD WHEEL AT 35 Lbs/sq in PRESSURE = 98". GOODRICH SILVERTON 32x6.20" TYRES FITTED. GEAR RATIOS:- TOP GEAR 4.75 : 1 2nd " 7.96 : 1 1st GEAR 15.29 : 1 REVERSE " 18.02 : 1 ROAD SPEED M.P.H. ENGINE R.P.M. TOP GEAR 2ND GEAR 1ST GEAR REVERSE 3.4.28 | ||