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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).
The performance and noise levels of various dynamo regulators.

Identifier  ExFiles\Box 31\1\  Scan017
Date  6th April 1914
  
S. S. 388a (100 T) (S.G. 643. 19-3-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2618
X 1402

Wor{Arthur Wormald - General Works Manager}/Mcr1/6.4.14.

X.1402. RE DYNAMO REGULATORS. X.3560. X 1058. X.796 . X.950.

Na.{Mr Nadin} 6-4-14.

In reply to your memo Na{Mr Nadin}38/IB30314, we give
below Mr. Hives's report on the above.

"We have run the Bijur dynamo off the test engine, one cannot hear any noise from the regulator, of course any very slight noise would not be heard for the engine noise. The contacts for the vibrator are made of platinum.

"I have never seen or tested a Bosch dynamo.

"The Scott regulator vibrates slightly when it first comes in and at high speeds but it settles down and remains still, it is noiseless except for a slight click when it comes in.

(sgd) E.H."

p. Wor.{Arthur Wormald - General Works Manager}
  
  


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