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T-REX 700 › 700 DOMINATOR WITH TAIL VIBES
08-25-2014 01:48 AM  4 years agoPost 1
yamahajoe

rrApprentice

ROGERS , AR 72758

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I have a new 700 dominator with ar7200bx castle 160 running set rpm mode. when I do a fast climb or a flip I get a real fast vibe in the tail like gain is to high. lowered the gain but did not change at all. is anyone else having this problem. wondering if it is the same tail issue they have been having. I have checked to make sure the tail is super smooth. I have done a reset on bx and a new model in radio just to rule it out. you can see the fast wag when you do the climb and hear it. any suggestions would be helpful

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08-26-2014 11:49 AM  4 years agoPost 2
Richardmid1

rrProfessor

Leeds, England

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Tail vibe and a wag are different things. Sounds like you mean a wag so have you tried turning the tail gain down? Have you tried lowering the governor gain? Do you have tail pre comp on in the ar7200bx and more importantly is it going the right way?

60% of the time, it works every time!

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08-26-2014 02:00 PM  4 years agoPost 3
yamahajoe

rrApprentice

ROGERS , AR 72758

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I have turned the tail gain way down with no change. Pre comp is on but i tried it with it off and no change

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08-26-2014 02:11 PM  4 years agoPost 4
Richardmid1

rrProfessor

Leeds, England

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Ok just double check that what you are turning down in your TX is actually changing the gain. Turn it up high and rotate the heli on the ground by hand and watch how much the pitch slider moves, now turn it right down and check again.

60% of the time, it works every time!

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08-26-2014 05:09 PM  4 years agoPost 5
ticedoff8

rrKey Veteran

Morgan Hill, CA. USA

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Is the ball too far out on the servo arm?
From your description, it sounds like you have too much mechanical gain.

If that is the case, turning the gyro gain down is the wrong thing to do.

The construction manual is not "The Bible" - it is a reference.
You may need to make minor mechanical changes to suit your electronics.

I would start by moving the ball one hole closer to the center of the servo and fly it.

Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!

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