IFT Evolve 300 CX - Page 19

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Movingtheleft‐handsticktotherightwillturn(yaw)thenoseofthehelicoptertotheright
abouttheaxisofthemainshaft.Thisisaccomplishedbyincreasingthespeed/RPMsofthe
uppersetofmainrotorbladeswhiledecreasingthespeed/RPMsofthelowersetofmain
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rotorblades.
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Theruddertrimlever(locatedimmediatelybelowtheleft‐handstick)canbeusedtohelp
keepthenoseofthehelicopterfromturning(yawing)totheleftorrightwhen‘hovering’and
withoutanyleft‐handstick/ruddercontrolinput.Forexample,ifthenoseof
thehelicopter
turnstotherightwhenhoveringslidetheruddertrimlevertotheleftuntilthenoseofthe
helicopterstaysascloseto‘straight’aspossiblewithnofurtherruddercontrol/triminput.
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NOTE:ItisnotuncommonforthenoseofmostCX(coaxial)helicopterstodrift
slightlyinone
directionortheotherthroughoutaflight(asthemotorsheatupandthebattery’soutput
voltagedecreases).Thismeansyoumayfinditnecessarytoadjusttheruddertrimlever
position/settingslightlythroughoutaflightbuttypicallyit’snotmorethanafew‘clicks’one
wayor
theother.
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Also,pleaseseethe‘ProportionalMixTrimmerPot’and‘GyroGainTrimmerPot’sectionsof
thismanualformoreinformationonotherpotentialadjustmentsthatcanbemadetofine‐
tunerudder/tailcontrolandresponse.
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