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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).
Altered method of rear springing for four specific vehicles.

Identifier  ExFiles\Box 67a\2\  scan0040
Date  10th October 1927
  
C O P Y.

To BY.{R.W. Bailey - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}

Hs{Lord Ernest Hives - Chair}/RmL/LG1.10.27.

ALTERED METHOD OF REAR SPRINGING.

We have four cars which we wish to spring at the rear by the method outlined in our Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}3/LG30.9.27.
For all except Kruse's car we should like to use your 25% stiffer spring with altered initial camber. For Kruse's car we should like to use a standard stronger spring with altered initial camber to reproduce exactly the results that have given such satisfaction on 117-MC and 10-EX cars.

Car and Chassis No.
Total sprung rear wt. allowed for.
Poundage and type of spring required.

Capt. Kruse. 38-TC.
2890 lbs.
2 std. springs of 2675 and 2775 lbs. with their initial camber altered to 1.4".

Sir John Latta. 82-LC.
3060 lbs.
25% stiffer type spring with 1.4" free camber. Rating. N.S. 475 lbs/1" O.S. 485 lbs/1".

London Trials car.
3000 lbs.
25% stiffer type spring with 1.4" initial camber. Rating. N.S. 470 lbs/1" O.S. 480 lbs/1".

Experimental car. 8-EX.
3030 lbs.
25% stiffer type spring with 1.4" positive initial camber. Rating. N.S. 470 lbs/1" O.S. 480 lbs/1".

Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}
  
  


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