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).
Blueprint graph of a governor advance curve for a DCD 838 distributor with spring specifications.

Identifier  ExFiles\Box 168\3\  img160
Date  24th March 1939
  
G.A. 23
DISTRIBUTOR DCD 838
GOVERNOR DW. 814
GOVERNOR ADVANCE CURVE OF R.R. DISTRIBUTOR (R.R.L.2) TO DCD 838 WITH SPRINGS SUPPLIED BY LUCAS
1ST SPRING: OVERALL LENGTH .840" 9 COILS. .175 OUTSIDE DIA .037" WIRE
2ND SPRING: OVERALL LENGTH .885" 8 1/4 COILS. .185 OUTSIDE DIA .028" WIRE
WRAITH III LIMITS
CAM BREAK PERIOD
O.{Mr Oldham} 1'E, 1/2'L, 1'E, O.{Mr Oldham} 3/4'L
DECREASING SPEED
INCREASING SPEED
LIMIT
DISTRIBUTOR SPEED R.P.M.
200, 400, 600, 800, 1000, 1200, 1400
ROAD SPEED M.P.H.
8.3, 16.6, 24.9, 33.2, 41.5, 49.8, 58.1
G.J
  
  


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