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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).
Modifications to road springs, focusing on drilling, grooving, and oiling methods.

Identifier  ExFiles\Box 16\7\  Scan168
Date  16th April 1929
  
To BY.{R.W. Bailey - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X7410 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG16.4.29.


S.S. ROAD SPRINGS.

With reference to BY/HEB{H. Biraben}6/15.4.29. We
agree that to begin with it is a good idea to confine
the drilling and grooving of the springs to the top 4
leaves.

We propose to run the springs with the lower
leaves surrounded with the thin felt so that they will
collect the overflow oil from the top leaves. This thin
felt is a scheme at present in use in the Test Dept. and we
think that if it can be soaked in oil it should provide
adequately for the lower leaves and shall test accordingly.

With regard to the bedding of the leaf tips.
We are going to endeavour to concentrate the bedding at
the tip of the top 4 leaves on a band the full width of the
spring directly under the oil hole.

If spring bedding is a feasible proposition
on production we think it would be as well to issue some
indication of the bedding we consider to be most desirable.


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


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