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).
Speedometer check and acceleration test for an Essex Terraplane.
| Identifier | ExFiles\Box 21\6\ Scan077 | |
| Date | 30th September 1933 | |
| To Ha/Rm.{William Robotham - Chief Engineer} c. Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey} 30.9.33. ESSEX TERRAPLANE. The speedometer has been checked over the mile, and the table shows the various speeds. M.P.H. Speedo. Reading. 30. 40. 50. 60. Timed speed. 28.75 38.25 48.25 57.25 Amount reading fast.% 4.35 4.55 3.63 3.0 Acceleration test in top gear with 2 passengers and full tank of petrol. 10 - 30 MPH. 7 secs. 10 - 40 MPH. 11 secs. 10 - 50 MPH. 15.2 secs. 10 - 60 MPH. 22.4 secs. F.Dodd. | ||