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).
Acceleration test results comparing a 'Present Jet' with a 'Jet supplied by S.U.'.
| Identifier | ExFiles\Box 107\1\ scan0136 | |
| Date | 16th August 1932 | |
| ACCELERATION TESTS CARRIED OUT ON 16.8.32. Present Jet. M.P.H. 2nd gear. secs. 3rd gear. secs. Top gear. secs. 10 to 20 2.4/5 3.1/5 4.4/5 10 to 30 4.3/5 6. 9. 10 to 40 9.1/5 14. 10 to 50 14.2/5 19.4/5 10 to 60 28.2/5 10 to 70 JET SUPPLIED BY S.U. M.P.H. 3rd gear. secs. 20 to 40 6.3/5 20 to 50 10.4/5 30 to 40 3.2/5 30 to 50 8.1/5 Lap speed mean of 2 runs 76.15 m.p.h. Flying ½ mile mean of 4 runs 78.96 m.p.h. The speedometer has been calibrated and is nearly correct, certainly not reading fast. | ||