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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).
Extract from a report detailing a cold-start test on a starter motor.

Identifier  ExFiles\Box 62\1\  scan0097
Date  3rd December 1932
  
To WST / X6134

Extract from Mr Hancock's report - dated 3.12.32.
---------------------------

RE STARTER MOTOR.

We risked and left the car standing outside
the garage all night to obtain starting difficulties.

The following data was obtained :-

Air Temp. 6°C. Oil Temp 6°C.

First 1/4 min the engine revs. were 68 per min.
This dropped to 52 r.p.m. for the next one minute and 40
secs. They did not obtain a start of the engine.
I gave them a throttle position which previously has
been O.K. for starting, but Brazier said it would not
start until they had closed the throttle for another
five seconds.

I carried out this test because they had
been using the starting handle to assist the motor every
morning, and I wanted to know if this was necessary,
because we had not found it so on our way over.

This test will be repeated to obtain a more
definite start.
  
  


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