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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).
Motor and fuel system tests, detailing flow resumption and restart issues.

Identifier  ExFiles\Box 17\5\  Scan162
Date  20th June 1932 guessed
  
-2-

Cont'd.{John DeLooze - Company Secretary}

The motor was then rested for a period of 15 mins, and restarted at 20 P.R.P.M. The flow recommenced almost immediately, but ceased after 1 1/4 mins - quantity, of fuels delivered 45 cc's. The pump was kept running, and the flow recommenced after 4 1/4 mins.

This condition would arise should the engine be stopped for any length of time when running on RESERVE, and attempting to restart on a low battery. Switching back to MAIN after running on RESERVE gave very similar results. Possibly a float controlled air vent in the tank would have overcome this difficulty, but since the reduction of the volume of the suction system gave batter all round results without any added complications, these tests were not continued.

HS.{Lord Ernest Hives - Chair}663 attached.
  
  


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