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HomeAircraftHelicopterMain Discussion › Tail wag issue
11-10-2013 09:11 AM  4 years agoPost 1
MGEE

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Pakistan

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Im using beastx with Torq bl9188 servo and edge tail blades.
My tail wags when i am doing a hurricane,to make it easy as the helicopter gains speed in a hurricane the tails starts to wag.
Rest all other maneuvers are perfectly fine and the tail is rock solid.
Tail gain is set to 40 in idleup mode and im using futaba 14 sg.
any help would be appreciated

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11-10-2013 12:03 PM  4 years agoPost 2
wrongler

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Brewerton, New York

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Have you tried adjusting the gain?

Bill Whittaker

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11-10-2013 12:52 PM  4 years agoPost 3
MGEE

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Pakistan

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not yet because i couldnt see any wag or anything in other maneuvers,even in a fast tail slide the tail is solid and there are no signs of tail wag.
Someone told me to move the ball closer to the servo center on the arm,I did that and have re adjusted the end points

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11-10-2013 01:18 PM  4 years agoPost 4
MGEE

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Pakistan

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but havnt flown yet as it got dark..

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11-10-2013 03:34 PM  4 years agoPost 5
wc_wickedclown (RIP)

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long beach calif

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i your heli fb or fbl
out of balance blades and or out of whack head unit can also cause
wag

Insha Allah made in america

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11-10-2013 03:41 PM  4 years agoPost 6
sansone

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North Florida USA

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+1 for increase gain a little, if it doesn't help you can put the gain back

Fusion 50 FBL / Futaba 8FG / Beastx

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11-10-2013 05:40 PM  4 years agoPost 7
Funky Trex

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Westerville, OH - USA

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As long as everything is set up properly mechanically, backwards hurricanes is an easy way to set the tail gain. I fly the 7200 Beastx in all of my flybarless helis. I fly them backwards as fast as they will go and if the tail wags, I lower the gain until it stops. Many helis can fly fine through many maneuvers with a higher gain, but it is just harder on the tail servo. Fast backwards hurricanes is an easy way to show when a tail gain is set too high. This number can be very different from heli to heli or very similar on others. Either way, I have had great luck using this method for setting my tail gain on helis from 450s to 700s. My gains range from 30 to mid 40s depending on the heli and setup (these numbers are with dx8 gyro menu) however, I would use the same method for any radio I was flying.

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11-10-2013 06:09 PM  4 years agoPost 8
MGEE

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do you think moving the ball link closer to the servo center would make any difference.in simple words what difference does it make if we move the ball closer to the center .

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11-10-2013 06:12 PM  4 years agoPost 9
MGEE

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Pakistan

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or should it be at the last hole like before and the gain be reduced a bit .

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11-10-2013 06:12 PM  4 years agoPost 10
Funky Trex

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Westerville, OH - USA

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What heli is it? What does the manual suggest for the distance? What distance are you currently using?

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11-10-2013 07:28 PM  4 years agoPost 11
wc_wickedclown (RIP)

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long beach calif

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MGEE
or should it be at the last hole like before and the gain be reduced a bit .
MGEE
do you think moving the ball link closer to the servo center would make any difference.in simple words what difference does it make if weld be move the ball closer to the center .
moving the ball link closer to the center hole reduce the amount
of travel the servo has to use .

just imagine if you use the last hole out how much flex there would be and how much stronger the tail would with it more direct to the center.
sansone
+1 for increase gain a little
that will give him more wag

bet his problem is this if he increase he gets wag and if he lowers the gain then tail stops holding .

if so he should do as advised

Insha Allah made in america

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11-10-2013 07:35 PM  4 years agoPost 12
Funky Trex

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Westerville, OH - USA

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wc_wickedclown
moving the ball link closer to the center hole reduce the amount
of travel the servo has to use .
Moving the ball closer to center will increase the amount of travel the servo will need for full travel, not reduce it.

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11-10-2013 08:01 PM  4 years agoPost 13
wc_wickedclown (RIP)

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long beach calif

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Funky Trex
Moving the ball closer to center will increase the amount of travel the servo will need for full travel, not reduce it.
moving it to the center will decrease the throw he will need to increase his gyro tail limits after he is done

Watch at YouTube

Insha Allah made in america

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11-10-2013 10:08 PM  4 years agoPost 14
Funky Trex

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Great video... although it does not explain how moving the ball closer to the center of the servo will reduce the amount of throw a servo has to use. It will increase resolution of the servo, but it will not increase the amount of travel, it reduces it. When moving the ball closer to center, you will have to increase travel of the servo to compensate.

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11-10-2013 11:44 PM  4 years agoPost 15
wc_wickedclown (RIP)

rrProfessor

long beach calif

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, but it will not increase the amount of travel, it reduces it. When moving the ball closer to center, you will have to increase travel of the servo to compensate.
correct you would decrease the amount of travel.

and thank you and awesome thats the word resolution you explained it lol

Insha Allah made in america

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11-11-2013 12:10 AM  4 years agoPost 16
Funky Trex

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I looked up the OP's other posts and it looks like he is referring to a Raptor x50. A quick download of the manual shows a reccomended distance of 13.5mm for the tail servo ball. Is this the distance you are using?

In the other thread from the OP, it says the heli is blowing out the tail in funnels as well. If this is happening, lowering the gain to stop the wagging in backwards hurricanes probably will not help. If everything is set up properly mechanically with proper size blades, full travel, etc, I would suspect the tail servo is failing.

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11-11-2013 12:22 AM  4 years agoPost 17
McKrackin

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Lucasville,Ohio

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I'm guessing the ball is as far out on the tail servo as it will go and his servo is being over powered.

I believe this is also called mechanical gain and it is too high for backwards hurries.

Move the ball in and increase the travel limits accordingly.

I literally never use the word literally right.

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11-11-2013 11:10 AM  4 years agoPost 18
MGEE

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Pakistan

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Thanks friends

I dint get time to fly today.Iv moved the ball one hole closer to th center and have reset the tail end points,now i can see that my tail slider is going more forward than before,i think last time when i setup the end points i returned the slider a little more,this time when the servo was binding i moved it back one or two clicks,the travel is 100 percent more now.

I haven't checked the recommended distance of the servo ball,will check that too and let you know what it does in the air

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11-11-2013 02:16 PM  4 years agoPost 19
MGEE

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Pakistan

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just checked the outer hole was around 18 mm from the center,now iv managed to make is around 14 mm from the center,hope that helps,iv set the end points again,One thing i didnt get was the blade angle of attack.the tail slider goes till the end at both sides but doesn't bind

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11-11-2013 03:57 PM  4 years agoPost 20
wc_wickedclown (RIP)

rrProfessor

long beach calif

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Check out this post i think this is what you are looking for
https://rc.runryder.com/t741622p1/

Insha Allah made in america

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