Rolls-Royce Archives
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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 comparing different axle and pivot configurations and their effect on steering heaviness.

Identifier  ExFiles\Box 17\3\  Scan102
Date  22th September 1926 guessed
  
E.A.C. V SERIES.
SILVER GHOST T SERIES
EXPT AXLE WITH WIRE WHEELS V SERIES PIVOTS
NEW AXLE NEW PIVOTS C2 SERIES
EXPT AXLE WITH DISC WHEELS V SERIES PIVOTS

Diagram annotations:
Diagram 1: 6°, .616
Diagram 2: 5°, .554
Diagram 3: VERT, 3.5"
Diagram 4: 2.5°, 1.0"
Diagram 5: VERT, CENTRE POINT

AXLES IN ORDER OF HEAVINESS OF THE STEERING
HEAVIEST ON THE LEFT

(1 & 2) THESE ARE VERY MUCH HEAVIER THAN THE OTHER THREE.
(3) PRESUMABLY THIS ARRANGEMENT SUFFERS SOMEWHAT FROM "CROSS-WINDING" OF THE PIVOT DUE TO LARGE AMOUNT OF OFF-CENTRE.
(4 & 5) THERE IS VERY LITTLE TO CHOSE BETWEEN THESE TWO AXLES FOR LIGHTNESS. POSSIBLY THE CENTRE POINT STEERING MAKES (5) THE VERTICAL PIVOT AXLE FEEL A LITTLE HEAVIER THAT IT OTHERWISE WOULD.
  
  


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