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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).
Tests on front axle torsion and servo efficiency.

Identifier  ExFiles\Box 5\3\  03-page127
Date  20th May 1925
  
R.R. std. (500) (O.D. 173 20.5.24) J.H.D.

EXPERIMENTAL REPORT

Expt. No.

REF Hs{Lord Ernest Hives - Chair}/Rn{Mr Robinson}/LG20.5.25.

FRONT AXLE TORSION.

Tests made by pulling front brakes on by means of main brake ropes, and a hold fast attached to the frame. The car is then pulled forward until the wheels just slide and the pivot lean measured.

EAC. (98-NK) FRONT AXLE WT. 2464 lbs.

Pivot. | Normal lean. | Lean under torsion.
O.S. | .125 back. | .450 forward.
N.S. | .080 back. | .440 forward.

G.111. FRONT AXLE WT. 1535 lbs.

N.S. | .156 back. | .235 forward.
O.S. | .215 back. | .215 forward.

SERVO EFFICIENCY.

We have tested the servo efficiency on 'India'. The servo was fitted with 45° cams. We find the input over [REDACTED] to be 1.25 taken in the conventional method adopted on EAC.111.

Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}
  
  


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