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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).
Letter from The S.U. Carburetter Co. Ltd. discussing diaphragm assembly pricing, lifespan, and sending a sample pump body.

Identifier  ExFiles\Box 149\4\  scan0185
Date  11th February 1937
  
TELEPHONE: BIRMINGHAM EAST 1171.
TELEGRAMS: FLEXCARBUR, BIRMINGHAM.
THE S.U. CARBURETTER CO. LTD.
PROPRIETORS:- MORRIS MOTORS LTD.
LORD NUFFIELD, CHAIRMAN
OLIVER BODEN, O.B.E., VICE-CHAIRMAN
T. C. SKINNER, M.I.A.E., MANAGING DIRECTOR
BORDESLEY GREEN ROAD, ADDERLEY PARK, BIRMINGHAM, 8.
YOUR REF:
OUR REF: TCS/DR
February 11th 1937.
Messrs. Rolls-Royce Ltd.,
DERBY.
Dear Sirs,
ATTENTION OF MR.DIXON
We thank you for your letter of the 10th inst. and note your remarks.
As regards your first query, we are going into this matter and will see what reduction can be made. We will write you again on this subject in the course of a few days.
The diaphragm assembly would be 2/6d each nett and we should be pleased to allow you 10d for the armature and spindle.
As regards the life of the diaphragm, this is a somewhat difficult question to answer, as some seem to last indefinitely. We had one which lasted to the equivalent of 200,000 miles, in fact we have had some on test which have stood up until the pump has completely worn out. Others, of course, do not last so long, and there are a few which seem to pack up pretty quickly. On the average, we should think that the diaphragm should be changed when the car is taken in for de-coking which we believe is about 12/13,000 miles. We think it would be advisable to do this rather than let the original diaphragm remain and possibly give trouble at a later date.
As requested, we are sending you under separate cover one of our standard double pump bodies.
Yours faithfully,
For THE S.U. CARBURETTER COMPANY LTD.
MANAGING DIRECTOR.
Handwritten notes:
Top center: 1263
Above recipient: Dixon. See me [with initials]
Right margin: 1/8. per (3/4)
  
  


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