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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).
Proposal to use a shouldered nut and lengthened screw for the S.U. carburetter throttle adjustment to improve accessibility.

Identifier  ExFiles\Box 31\5\  Scan310
Date  23th March 1935
  
X1487

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

Hs{Lord Ernest Hives - Chair}/Bwg.{J. C. Bowring}5/KW.23.3.35.

S.U. Carburetter Throttle Adjusting Screw.

Production are finding difficulty in locking up the throttle adjustment due to the fact that the 3-BA lock nut enters into a recess in the casting when in a locked position, thus making it inaccessible.

It is suggested that a shouldered nut be used; this would raise it so that a spanner could be applied.

We suggest that in future a nut with a shoulder of .156" replaces the present standard, and that the adjusting screw be lengthened a similar amount to allow for full range.

Hs{Lord Ernest Hives - Chair}/Bwg.{J. C. Bowring}
  
  


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