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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).
Policy and design options for new shock dampers, referencing several design schemes.

Identifier  ExFiles\Box 16\4\  Scan259
Date  2nd March 1931
  
C.
BY.{R.W. Bailey - Chief Engineer} HS.{Lord Ernest Hives - Chair} FROM DA.{Bernard Day - Chassis Design}

X7820
DA{Bernard Day - Chassis Design}2/M2.3.31.
X7820
X235

C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} HY.{Tom Haldenby - Plant Engineer} P. 2. SHOCK DAMPERS.


We are in some doubt as to the policy in connection
with the above. We have sent you a spring loaded piston, and a
method (N. sch. 3229.) of a considerable increase in the dia. of
the shaft using existing castings. We are about to start on the
design of a completely new damper as we have now had sufficient
instructions from R.{Sir Henry Royce} to enable us to do so.

In the meanwhile we wonder how urgent the question
of a revised damper is in connection with the L.H. chassis. We have
made a drawing - N. sch. 3240. - which we send herewith, showing
a greatly increased dia. shaft, and also a larger square in accordance
with R2/M23.2.31. This involves a new damper body but follows the
existing damper practice and would no doubt be quicker to get going
than an entirely new damper, but in R's recent memo. we are instruct-
ed{J. L. Edwards} to begin an entirely new damper, and there is some doubt in
our minds whether it is worth while going on with N. sch. 3240.
Perhaps you will be able to decide.

We also send N. sch. 3237. which merely shows the
method of lubrication of the bearings from the low pressure side.
In other respects it is superseded by N. sch. 3240. It will be
understood that on N. sch. 3229. the view on the L.H. slide is a
completely different proposition as this represents a stiffer shaft
using existing castings.

DA.{Bernard Day - Chassis Design}
  
  


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