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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).
The testing of special Woodhead front road springs with four rebound leaves.

Identifier  ExFiles\Box 67a\1\  scan0082
Date  2nd February 1926
  
Expl: Report.
Expl: No. X840
Ref. Hs{Lord Ernest Hives - Chair}2/LG25.2.26.

To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair}
c. to CJ. BJ.
c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer}
c. to DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer}
c. to Wor.{Arthur Wormald - General Works Manager}

FRONT ROAD SPRINGS. X2628

We have been testing some of the special Woodhead springs which are fitted with 4 rebound leaves, each leaf having a rebound clip on each end so that the rebound leaves take a share of the compression load.

We have tested some of the springs on the bumper.

From the results so far, we should say that the springs will have a longer life than the present springs. We have completed 50 hrs. running. We have had no case of the main plate breaking; we have had 2 of the top rebound plates break.

The other advantages we think we may expect from these springs are, that they should be definitely better for resisting torque of the front brakes. Tests are being made to obtain a value for this. They also have more internal damping which should relieve the load on any external damping which we may get.

We attach a blueprint which gives a comparison of the new Woodhead spring compared with the present standard.

Hs.{Lord Ernest Hives - Chair}

Blueprints sent to :-
R.{Sir Henry Royce} DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer}
  
  


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