Rolls-Royce Archives
         « Prev  Box Series  Next »        

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.
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙