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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).
Revised specification for a chassis undergoing 15,000-mile tests in France.

Identifier  ExFiles\Box 83\1\  scan0174
Date  2nd September 1936
  
X 202

To Sg.{Arthur F. Sidgreaves - MD} & Wor.{Arthur Wormald - General Works Manager}
c. to E.{Mr Elliott - Chief Engineer}
c. to By.{R.W. Bailey - Chief Engineer}

Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}16/KW.Z.9.36.

6-B-IV - 15,000 miles Tests in France.

Herewith a revised specification of this chassis, which is at present running in France -

ENGINE.

(1) Improved oil filtering. *
(2) Increased oil circulation, larger oil pump. *
(3) Improved crankshaft damper.
(4) Turbulent head with lips removed and ignition governor to suit.
(5) Improved piston rings to take care of increased oil supply. We are following out with 'L' shaped rings to be fitted in place of the standard middle ring. *
(6) 11" Borg & Beck clutch with Ph.III type material. *
(7) Improved exhaust valves of stellited low expansion material. *
(8) Cantilever throttle controls.
(9) Small carburetters and induction pipe, to improve idling. *
(10) Hall's metal bearings of higher Brinell. 7% tin alloy. approved *
(11) Modified cylinder head water circulation. *
(12) Close clearance inlet valves. *
  
  


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