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 with 7x20 tyres under different exhaust cut-out conditions and lapping figures with G.L.N.60.
| Identifier | ExFiles\Box 155\1\ scan0023 | |
| Date | 13th July 1932 guessed | |
| -2- Acceleration tests were carried out with 7 x 20 tyres fitted, we also did a Lap, and half mile, with these tyres on, cut-out closed. 7 x 20" tyres Lap speed CO 122 secs 81.64 M.P.H. 1/2 mile CO 21.4 secs 84.11 M.P.H. Lap Speed C.O. 113.8 secs. 87.52 M.P.H. 1/2 mile " C.O. 20.2 secs 89.11 M.P.H. Lapping came down with G.L.N.60 and we took the Car round getting the following figures:- Lap Speed 75.23 M.P.H. 1/2 mile - 75.00 M.P.H. | ||