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T-REX 500 › heli nose nodding in flight
02-06-2010 09:44 PM  8 years agoPost 1
b morris

rrNovice

wexford Ireland

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hi guy,s my t rex500 is nodding nose in flight and i can,t get rid of the nod.Have replaced the main bearings+head dampeners+boom.
I also checked blade tracking+checked headspeed -nod got worse after new dampeners went in.I am at a loss to get rid of this problem.If any one has any suggestions of help your help would be greatly appreciated....thanks

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02-06-2010 09:48 PM  8 years agoPost 2
Funky Trex

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Westerville, OH - USA

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Sounds like your headspeed is too low.

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02-06-2010 10:09 PM  8 years agoPost 3
Evan D

rrApprentice

Charlotte, NC

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Which 500, motor, pinion???

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02-06-2010 10:22 PM  8 years agoPost 4
Gyronut

rrProfessor

Martinsville In.

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+1 for the low HS.

Rick

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02-07-2010 05:13 PM  8 years agoPost 5
NQNA

rrElite Veteran

USA

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+1 on head speed.. also dampers being too hard will cause this.. only cure.. increase the head speed..

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02-07-2010 07:01 PM  8 years agoPost 6
ualdrivr

rrApprentice

Long Island, NY

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Maybe it want's to take a nap . Just kidding. That is tell tale sign of low head speed. Try Idle Up 1 or 2 with a 100% flat throttle curve and let us know. This Heli likes head speed.
You might have to play around with your gyro gain, after you make the change, more head speed less gyro gain

Cheers

At the precipice, we change!
Team GrandRC

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02-07-2010 07:33 PM  8 years agoPost 7
mmc205

rrElite Veteran

PA - USA

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yup, probably headspeed. if you want to keep your current headspeed, try softer dampers.

***Logo 600 vbar***Henseleit TDR vbar***

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02-08-2010 11:02 AM  8 years agoPost 8
Mr. Miyagi

rrApprentice

Detroit, Michigan

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This was happening with mine as well. Soften the dampners and increase the headspeed.

You're not a "pilot" if you fly an RC helicopter. Sorry to crush your dreams #HardTruth

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02-08-2010 03:16 PM  8 years agoPost 9
chopper_crazy

rrElite Veteran

Delphos, Ohio

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I would increase the headspeed first and if that doesn't solve in then soften your dampners.

It's a complex, costly, glow powered anti-gravity machine!

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02-27-2010 11:43 PM  8 years agoPost 10
b morris

rrNovice

wexford Ireland

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problem solved
hi guys just to let you know i increased headspeed and nodding is gone-did loads of forward flips and rolls hell what a blast-even did flips with t rex 250-great fun-thanks for all your help..............

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