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).
Calibration of an A.T. speedometer for a Smith instrument board.
Identifier | ExFiles\Box 59\2\ Scan139 | |
Date | 6th January 1932 | |
X6051 Roy{Sir Henry Royce}/GEA. from Hs{Lord Ernest Hives - Chair}/Wst. Hs{Lord Ernest Hives - Chair}/Wst.5/ADL6.1.32. A.T. SPEEDOMETER ON SMITH INSTRUMENT BOARD. The A.T. speedometer for the Smith instrument board you are ordering for the 20/25 chassis 18-GIV should be calibrated for 770 R.P.Mile. This will be for a 12/50 axle and 6 x 18" tyres. This R.P.Mile figure will not necessarily be the correct figure for "U" series production and this figure will have to be decided by Ey/Cgh.{W Clough} and the Exptl. Dept. later. Hs{Lord Ernest Hives - Chair}/Wst. | ||