JR X9503 2.4 - Servo Precautions; General Notes

Servo Precautions
General Notes
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•Donotlubricateservogearsormotors.
•Donotoverloadretractservosduringretractedor
extendedconditions.Makesuretheyareableto
traveltheirfulldeflection.Overloadingorstallinga
servocancauseexcessivecurrentdrain.
•Makesureallservosmovefreelythroughtheir
rotationsandnolinkageshanguporbind.A
bindingcontrollinkagecancauseaservotodraw
excessivecurrent.Astalledservocandraina
batterypackinamatterofminutes.
•Correctanycontrolsurface“buzz”or“flutter”as
soonasitisnoticedinflight,asthisconditioncan
destroythefeedbackpotentiometerintheservo.It
maybeextremelydangeroustoignoresuch“buzz”
or“flutter.”
•Usethesuppliedrubbergrommetsandbrassservo
eyeletswhenmountingyourservos.Donotover-
tightentheservomountingscrews,asthisnegates
thedampeningeffectoftherubbergrommets.
•Ensuretheservohornissecurelyfastenedto
theservo.UseonlytheJR
®
servoarmscrews
provided;thesizeisdifferentfromother
manufacturers.
•Discontinuetouseservoarmswhentheybecome
“yellowed”ordiscolored.Suchservoarmsmaybe
brittleandcansnapatanytime,possiblycausing
theaircrafttocrash.
•Checkallrelatedmountingscrewsandlinkages
frequently.Aircraftoftenvibrate,causinglinkages
andscrewstoloosen.
•Ensureyourbatterieshavebeenproperlycharged
priortoinitialflight.
•Keeptrackofthetimethesystemisturnedonso
youwillknowhowlongyoucansafelyoperate
yoursystem.
•Performagroundrangecheckpriortotheinitial
flightoftheday.Seethe“DailyFlightChecks
Section”forinformation.
•Checkallcontrolsurfacespriortoeachtakeoff.
•Usefrequencyflags.
•Donotflyyourmodelnearspectators,parking
areasoranyotherareathatcouldresultininjury
topeopleordamageofproperty.
•Donotflyduringadverseweatherconditions.
Poorvisibilitycancausedisorientationandloss
ofcontrolofyouraircraft.Strongwindscancause
similarproblems.
•Donotpointthetransmitterantennadirectlytoward
themodel.Theradiationpatternfromthetipofthe
antennaisinherentlylow.
•Donottakechances.Ifatanytimeduringflightyou
observeanyerraticorabnormaloperation,donot
resumeflightuntilthecauseoftheproblemhas
beenascertainedandcorrected.Safetycannever
betakenlightly.
Radiocontrolledmodelsareagreatsourceofpleasure.Unfortunately,theycanalsoposeapotentialhazardifnot
operatedandmaintainedproperly.
Itisimperativetoinstallyourradiocontrolsystemcorrectly.Additionally,yourlevelofpilotingcompetencymustbehigh
enoughtoensurethatyouareabletocontrolyouraircraftunderallconditions.Ifyouareanewcomertoradiocontrolled
flying,pleaseseekhelpfromanexperiencedpilotoryourlocalhobbyshop.
Safety Do’s and Don’ts for Pilots