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).
Using lap speeds at Brooklands track to establish comparative car speeds and check speedometer error.
| Identifier | ExFiles\Box 18\4\ Scan028 | |
| Date | 19th April 1933 | |
| W/S. Cx.{Major Len W. Cox - Advertising Manager} from Hs.{Lord Ernest Hives - Chair} c. Wor.{Arthur Wormald - General Works Manager} X7960 Hs.{Lord Ernest Hives - Chair}9/KT.1914.33. SPEED OF 20-MY. Replying to Cx{Major Len W. Cox - Advertising Manager}18/KW13.4.33. We have established that the only way of judging comparative speeds of cars is the lap speed of Brooklands track. We strongly recommend that you take 20-MY on the track and check the lap speed which we expect will be about 86-88 m.p.h., and also check the speedometer error. We don't think that our speedometers give any greater errors than our competitors. We must have a recognised accurate method of comparing cars when discussing them amongst ourselves. Hs.{Lord Ernest Hives - Chair} | ||