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).
Summary of performance results comparing a No. 7 Race Car with an 'A' Practice Car.
| Identifier | ExFiles\Box 155\1\ scan0265 | |
| Date | 20th October 1936 | |
| -2- Hs {Lord Ernest Hives - Chair} /GR. {George Ratcliffe} 10/KW.20.10.36. Summary of Results. No. 7 Race CAR - fastest lap = 106.88 M.P.H. 'A' Practice car - " " = 108.27 " No. 7 Race Car 0.91 M.P.H. faster with Unit N9BT. {Capt. J. S. Burt - Engineer} 'A' Practice Car 0.71 " slower " Unit B-21. No. 7 Race Car 1.39 M.P.H. slower than 'A' practice car. " " " still ran hot with Unit N9BT {Capt. J. S. Burt - Engineer} at 95°C. This cylinder block or head requires blanking off at the front water passages as on the 30 HP. for continual high speed running. 'A' practice car body is still better than the No.7 race car body at the values of 1.39 to 3.01 MPH. 'A' practice car B-106-GA at the owner's request to be converted back to original standard chassis. Hs {Lord Ernest Hives - Chair} /G.H.Ratcliffe. | ||