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840 Propellor. Pilot-Valve. Flyweights. Speeder Spring. Basic Prop Control ON-Speed. Pilot Valve Blocks Oil, Ports Prop to Gear-case. Basic Prop Control OVER-Speed. Pilot Valve Blocks Oil Dump, Ports Oil to Prop. Note Port in Beta Tube. Basic Prop Control UNDER-Speed.
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840 Propellor
Pilot-Valve Flyweights Speeder Spring Basic Prop Control ON-Speed
Pilot Valve Blocks Oil, Ports Prop to Gear-case Basic Prop Control OVER-Speed
Pilot Valve Blocks Oil Dump, Ports Oil to Prop Note Port in Beta Tube Basic Prop Control UNDER-Speed
Propeller Piston & Beta-Tube Move Forward Basic Prop Control Low-Pitch Stop Beta-Tube Port Blocked
Basic Prop Control Low-Pitch Stop Beta Light
NTS Not Active Negative-Torque Port
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