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Trim speed in decent

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mreinh3233

mreinh3233

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When I trim my SD ll to lets say 95MPH it maintains that airspeed pretty well. The problem is when I reduce throttle the airspeed increases (Like to 120mph+) in the decent. Is this something normal for biplanes? Every other airplane I’ve flown maintains the trimed airspeed pretty close when you do that. Comments anyone?. Is it a rigging issue, or just the way biplanes are?...
 
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