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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).
On the testing and design of a simplified automatic starter switch for 40/50, J.3, and Peregrine models.

Identifier  ExFiles\Box 168a\2\  img074
Date  6th June 1932
  
X6139
E.{Mr Elliott - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Wst.
c. to Sy.
c. to WOr.{Arthur Wormald - General Works Manager}
Hs{Lord Ernest Hives - Chair}/Wst.1/UA.6.6.32.

40/50, J.{Mr Johnson W.M.} 3. AND PEREGRINE AUTOMATIC STARTER
SWITCH.

We have been testing on Expl. Chassis and on Sy's car 55-GX automatic starter switches with the teazer relay and hold off coil portion out of action. A 10,000 mile test is also in progress of such an arrangement on 19-K.{Mr Kilner}

R has agreed to this scheme which simplifies the starter system considerably and results in a much less expensive relay switch.

We should be glad therefore if you will arrange for a new switch to be designed and instructed consisting of a main starter relay switch only.

This switch will be required and would be suitable for all our sequence starters on 40/50, J.{Mr Johnson W.M.} 3. and Peregrine, as there will not be much difference in the main starting currents of either owing to the efficiency being smaller with the smaller size motors.

HS{Lord Ernest Hives - Chair}/Wst.
  
  


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