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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 'SS' bumper chassis testing on the bumping rig, discussing front spring life and new hydraulic shock dampers.

Identifier  ExFiles\Box 16\7\  Scan134
Date  1st January 1929
  
To DA.{Bernard Day - Chassis Design} From Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}
c. to BY.{R.W. Bailey - Chief Engineer}
c. to Wor.{Arthur Wormald - General Works Manager}

47410
Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}1/LG11.1.29.

'SS{S. Smith}' BUMPER CHASSIS.
X235
48772

Attached herewith is a complete report on the running of the SS.{S. Smith} chassis on the bumping rig.

You will note that the front spring life has been quite satisfactory when run with shock dampers.

The new hydraulics with restrictions apparently have a very marked effect on spring life. We want the shock absorbers to stand up with 5 dynamic restrictions because it is the condition which gives us the best car control and steering.

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


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