Cyclone. Department. of. Commerce. approves. high. rating. for. new. F-50. Cyclones. Adjustment r Range shifter piston^ Ra \ R*+urn sprmg, 3pr*a a Adjusting nufs~^ agt; ac HI 1 Valves ... This necessitates additional jet capacity and, as shown, jet G is brought into action by the operation of the poppet valve. ... To maintain lubrication in the rocker boxes, the valve handle is operated periodically while in flight.
|Title||:||Aviation's aircraft handbook|
|Author||:||Aviation; the oldest American aeronautical magazine|