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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).
Test report on the initial pumping times for a large type Model 'C' A.C. petrol pump.

Identifier  ExFiles\Box 27a\2\  Scan087
Date  23th August 1932
  
For Files.
X2677. 23.8.32.

A.C. PETROL PUMP - LARGE TYPE - MODEL "C".

TESTED AS SUPPLIED. .250" STROKE. C & S OF FABRIC
REMAINING HOLES 3.437".

The following Initial Pumping times were recorded,
the pump being run dry after each test. Both 5/16" &
¼" diam suction pipe lines were tested.

5/16" DIA SUCTION PIPE.
Initial Pumping Time at 20 R.P.M. 42 secs.
" " " " " 50 R.P.M. 16 secs.
" " " " " 75 R.P.M. 10 secs.

¼" DIA SUCTION PIPE.
Initial Pumping Time at 20 R.P.M. 28 secs.
" " " " " 50 R.P.M. 13 secs.
" " " " " 75 R.P.M. 8 secs.

Hs{Lord Ernest Hives - Chair}/W.Bell.

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