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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).
Proposing solutions to a vehicle 'jellying' issue by adjusting damper loading and mounting points.

Identifier  ExFiles\Box 28\5\  Scan032
Date  5th April 1930
  
X457.

To Rm.{William Robotham - Chief Engineer} from Oy.

Oyl/DM.{D. Munro}5.4.30.

Jellying.

(1) Have you tried the effect of a high damper loading, say 120 lbs up and down, plus HP. valves with 1/32 hole, on jellying?

(2) Have you tried the effect of a combination of :-
(a) A rigid front end of frame. 4 point solid engine mounting etc.
(b) A flexible rear end of frame.
(c) A flexible body mounting, say 4 rubber cups and no contact between body and frame aft of the main support.

Might not this give required results equivalent to a bare chassis plus the damping effect of the 4 rubber cups?

Oy.
Dk.
  
  


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