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).
Performance test report from Brooklands detailing lap speeds, flying half mile, and damper readings.
| Identifier | ExFiles\Box 155\1\ scan0175 | |
| Date | 15th May 1935 | |
| S/W. To Rm.{William Robotham - Chief Engineer} From Lp.{Mr Lappin} Copy to Bn.{W.O. Bentley / Mr Barrington} 41320 Lp.{Mr Lappin}12/LAM.15.5.35. Re: 4.B.IV. Bn.{W.O. Bentley / Mr Barrington} drove this car at Brooklands last week to check my previous lap speeds, and ran a lap at 90.55 M.P.H. With a North East wind the flying half mile was done at 95.74 M.P.H., engine revs. going to 4650. Pick up from 10 M.P.H. per half mile was 35.2/5 secs. two up. The damper readings are as follows:- M.P.H. MAXIMUM LBS. MINIMUM LBS. 10 14 1 20 15 2 30 16 3½ 40 18 5 50 20 8 60 23 10 70 25 12 80 28 16 Lp.{Mr Lappin} | ||