Rolls-Royce Archives
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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).
Selection and testing of three potential dynamos for the Rationalised Range.

Identifier  ExFiles\Box 168a\3\  img039
Date  24th February 1940
  
6142
Hm{Capt. W. Hallam - Head Repairs}/RC.{R. Childs}
Rm.{William Robotham - Chief Engineer}4/ML.24.2.40.

Dynamos for the
Rationalised Range.

There are three potential machines
available: Lucas 4½", Lucas 5", and R.R. 5".

We think that we should carry on with
testing all three machines.

It seems doubtful if the 4½" machine
would be big enough for anything larger than the 4-cylinder
cars.

Judging by our experience on the Bentley
and with the latest R.R. improved 72-slot armature 5"
machine should cater for any conditions which are likely
to arise.

Two essentials to enable the machine
to cope with the job:-

(1) The use of S.A.E. 20 oil.

(2) The use of 48 watt. hedlamp bulbs.

Hm.{Capt. W. Hallam - Head Repairs}
  
  


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