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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).
Test plan and notes regarding throttle, air valve, and cam control adjustments.

Identifier  ExFiles\Box 155\2\  scan0346
Date  18th June 1941
  
Cont'd- -2- Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}14/SW.18.6.41.

to give the same "Tee" bends as B.V.

A full analysis should then be taken as per the recent B.V. test; to include :-

(a) Full throttle specific consumption.
(b) Throttle constant speed curves.
(c) Air valve lift for (a) and (b) with induction pipe depression.
(d) It should be carefully checked, whether the air- valve lift is being influenced at all by the fitting of the air bend and silencer

The system will then be available for road test.

NOTE :-

The cam control for the second stage throttles, must be so adjusted to let these throttles fully close, otherwise the behaviour of the air valve will be erratic.

Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}
  
  


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