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).
Road test report for a 'Bensport' engine, detailing performance and acceleration figures.
| Identifier | ExFiles\Box 82\1\ scan0064 | |
| Date | 27th March 1933 | |
| To Hs{Lord Ernest Hives - Chair} From GWH{George W. Hancock - Head Chateauroux} Hotel de France Chateauroux Indre B E N S P O R T We completed the engine this morning and after running light for two hours we tried the car on the road. The engine was smooth and after several bursts of speed there was no sign of any tighness in the engine. We had to return to attend to the rear silencer, the rear baffle having worked loose, causing a rattle. We have taken further acceleration figures after running the engine in. There was .045 - .048 clearance from the top of the piston to top of cylinder as against previously .037 The acceleration figures are: MPH SEC 10 - 20 5 10 -30 8 4/5 10 - 40 14 1/5 10 - 50 19 10 - 60 25 3/5 10 - 70 32 2/5 10 - 80 44 MPH SEC 10 - 20 5 20 - 30 4 1/5 30 - 40 4 2/5 40 - 50 5 1/5 50 - 60 6 60 - 70 7 3/5 70 - 80 18 4/5 10 to 80 through gears 42 sec's. G.W.H. Hancock. G.W.H. | ||