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HomeAircraftHelicopterHelicopter Main Discussion › no Rudder control
01-16-2010 03:40 PM  8 years agoPost 1
bhoff

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houston texas

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the servo is moving and everything but i am getting no control of my rudder..i go right or left my heli just slowly spins around counter clockwise and i cant adjust it with rudder input..im not sure whats goin on everything is brand new

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01-16-2010 03:45 PM  8 years agoPost 2
george0079

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USA

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More info is needed.

to start with...

What heli
what servo
what gyro

Hell... I can fix that.
Uh oh..
Nope.
It's ***ked!!!
RE-KIT!!!!!

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01-16-2010 04:28 PM  8 years agoPost 3
ShuRugal

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Killeen, TX

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and what gain setting.

AMA 700159

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01-16-2010 04:45 PM  8 years agoPost 4
bhoff

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houston texas

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align 450 i built the kit so its the gyro that came with it..the gain setting is at 50 right now..and its an align servo...it moves when its all turned on but im getting no response

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01-16-2010 04:48 PM  8 years agoPost 5
TRACERBOB

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Closer than you think

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Could be the gyro is reversed.

Life is hard. Harder when your stupid

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01-16-2010 04:49 PM  8 years agoPost 6
george0079

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USA

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what radio?

If you're using a Spektrum TX, 50% won't work. Turn it up to 70%, and see if the tail responds when you turn the heli by hand

Hell... I can fix that.
Uh oh..
Nope.
It's ***ked!!!
RE-KIT!!!!!

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01-16-2010 04:51 PM  8 years agoPost 7
bhoff

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houston texas

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rds8000..ill try reversing it..when i move the rudder stick left,the helis fron is on my right and tail on my left, should the tail servo move toward the heli or away?? i really dont think reversing is the issue but ill see

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01-16-2010 05:22 PM  8 years agoPost 8
ShuRugal

rrKey Veteran

Killeen, TX

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as stated, 50% gain is killing you. A lot of gyros split the HH and rate modes at 50%, so if you set 50%, gyro wont know what mode to use.

AMA 700159

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01-16-2010 07:41 PM  8 years agoPost 9
Ronald Thomas

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Gainesville, Fl, USA

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when i move the rudder stick left,the helis fron is on my right and tail on my left, should the tail servo move toward the heli or away?? i
Try it like this: When looking at the heli from the rear, take the tail blades and make sure they are straight up and down. Now when you move your stick to the left, the trailing edge of the top tail blade should go left and likewise when you move the stick to the right, the trailing edge should follow to the right.
Now when the heli is on the ground and powered up (disconnect the motor), pick the tail of the heli up and when you move the tail, the trailing edge of the tail blade should follow your hand movements. So when you move the tail of the heli to the right (nose of the heli goes left)the trailing edge of the blade goes right. Now the heli's tail is set up correctly.

As for the tx, start with the ATVs @ 60% and go from there. Assuming you set the linkages of the tail up correctly, that should be a good starting point.
Hope this helps........Ron

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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01-16-2010 09:11 PM  8 years agoPost 10
tasmanian devil

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DeSoto,Tx.

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Question
One question for you that nobodys asked yet.Are the tail blades installed correctly for direction of rotation?

I do'nt crash,I just rearrange parts.

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01-16-2010 09:15 PM  8 years agoPost 11
bhoff

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houston texas

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got it...just needed to reverse it and i set it at 70..thanks yall

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01-17-2010 02:33 AM  8 years agoPost 12
bhoff

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houston texas

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ok now its not working..it worked one time and that was it..idk

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01-17-2010 02:40 AM  8 years agoPost 13
Michaelinpr

rrApprentice

Levitown, Toa Baja, Puerto Rico

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Something similar happened to me a couple of months ago. Check that your servo mounts are not slipping for the tail servo. The torque can pull the servo towards the tail and you will just spin counter clockwise. Worth a check any way.

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01-17-2010 02:47 AM  8 years agoPost 14
dkshema

rrMaster

Cedar Rapids, IA

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Align 450. That narrows the heli down to maybe ten different models...

WHICH Align 450? SE, SEV2, Pro, Sport, SA... ? Belt drive, torque tube?

If properly built, as I noted in one of your previous posts about this same question:

Right rudder should make the servo PULL the pushrod FORWARD -- to the nose. If it goes the other way, reverse the Rudder channel at the Transmitter.

Pick up the heli, turn the nose to the LEFT while watching the TR servo. It must PULL the pushrod forward, to the nose of the heli. If it goes the other way, reverse the GYRO direction at the GYRO.

-----

With the heli sitting on a table, nose to your right, tail to your left, the tail rotor shaft is pointing at you. The tail rotor turns COUNTER CLOCKWISE. If you have a belt driven tail and it's going clockwise, you have the belt twisted the wrong way.

The TR blade on the right side of the TR shaft is moving UP, the control ball is on TOP, and the leading edge of the blade is on top.

The TR blade on the left side of the TR shaft is moving DOWN, the control ball is on BOTTOM, and the leading edge of the blade is on bottom.

If any of that is wrong, FIX IT.

-----

If you have a belt-driven tail, everything is built correctly, the transmitter moves the servo correctly, the gyro moves the servo correctly, AND THE HELI STILL spins CCW (from the top) when you try to lift off, then either the pulley on the front of the belt, or the pulley on the rear end of the belt is slipping on its shaft and needs to be fixed.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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01-17-2010 05:17 AM  8 years agoPost 15
bhoff

rrVeteran

houston texas

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okay i figured out whats goin on...my rudder servo works and then wen i put a little throttle on it it will work and then it like gets caught up on something i guess because all of a sudden the servo arm only moves half the length that it is supposed to...i thought maybe the tail shaft was bending but i cant figure out whats causing it do that

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01-17-2010 05:26 AM  8 years agoPost 16
dkshema

rrMaster

Cedar Rapids, IA

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OK post some pictures of the heli. Where is your gyro in relation to your speed control?

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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01-17-2010 06:52 AM  8 years agoPost 17
bhoff

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houston texas

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esc is under the heli and gyro is on the back..just like it says on the align 450 sport kit

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01-17-2010 06:55 AM  8 years agoPost 18
TMoore

rrMaster

Cookeville, TN

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Did you follow the directions I sent you and zero out the REVO Mix?

TM

Delayed Response Operator Not Engaged
AMA SECTION 336 = Good
Drones = EVIL

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01-17-2010 07:04 AM  8 years agoPost 19
bhoff

rrVeteran

houston texas

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ya the low,medium,high are all set to zero..like i said it works the servo arm has alot of throw and then i start giving throttle and it will work for a little bit but i wont hover because it starts barely moving back and forth and my heli very slowly moves counterclockwise and i cant bring it to normal cuz the servo is not reaching its maximum points or epa i guess..idk

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01-17-2010 07:09 AM  8 years agoPost 20
TMoore

rrMaster

Cookeville, TN

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Sounds like too much gain. Try adjusting the gain down to 40% or 35%. Does the gyro have rate mode and heading hold mode?
as stated, 50% gain is killing you. A lot of gyros split the HH and rate modes at 50%, so if you set 50%, gyro wont know what mode to use.
Airtronics radios don't split the gain up since it halves the available channel resolution so the numbers in the Gyro menu are straight channel gain numbers. + is usually for HH and - is for rate mode depending on the state of Reversing for the gyro gain channel.

TM

Delayed Response Operator Not Engaged
AMA SECTION 336 = Good
Drones = EVIL

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HomeAircraftHelicopterHelicopter Main Discussion › no Rudder control
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