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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).
Bentley brake issues, detailing modifications and testing results, including a sketch of a new tubular stay.

Identifier  ExFiles\Box 83\2\  scan0240
Date  18th February 1938
  
To. Rm.{William Robotham - Chief Engineer}
o.{Mr Oldham} Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale}

200a CHATEAUROUX. I/.18.2.38.

6.B.IV. - BENTLEY.

BRAKES.

Thank you for your memo Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale}2/JH.16.2.38.
We have as requested, replaced the correct idler lever and the 1.75" plate lever in the front equaliser, so that the system is now as described in our memo Chateauroux /10.2.38. This arrangement has already run 2,425 miles with B.Z. liners in the front brakes, and has given no trouble. Unfortunate results have been experienced with the front brakes lined with M.R.3. An aluminium drum has been scrapped, bad pulling of the brakes, sometimes to the right and sometimes to the left, judders, and two bent toggles.

After reverting to the above system, we still experienced judders with the M.R.3 on the front brakes, so we have replaced the shoes lined with B.Z. which have already covered 2,425 miles.

We have fitted a single 7/16" O.D. tubular stay from the frame to one of the idler lever supports which has effectively stopped the flexing of the crossmember. Herewith is a sketch of the arrangement.

Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux}
Ivan M.{Mr Moon / Mr Moore} Waller.

EXISTING HOLE
FOR PIPE CLIP
ENLARGED TO 1/4" DIA
  
  


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