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Old 02-13-2011, 05:36 PM   #1
blairg
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Question Walkera 180Z PRO Replaced tail servo now spins

I replaced the tail servo on my Walkera 180Z PRO and now the tail spins when I power it up.I have tried different locations on the servo with no results.Can someone please advise me how to set it up properly?

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Old 02-13-2011, 08:03 PM   #2
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Old 02-14-2011, 03:38 PM   #3
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Old 02-14-2011, 09:23 PM   #4
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Quote:
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I replaced the tail servo on my Walkera 180Z PRO and now the tail spins when I power it up.I have tried different locations on the servo with no results.Can someone please advise me how to set it up properly?
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Old 02-15-2011, 07:06 PM   #5
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Old 02-16-2011, 08:26 PM   #6
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Old 02-17-2011, 09:02 AM   #7
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check the main gear and the tail gear !
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Old 02-18-2011, 03:39 PM   #8
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Old 02-20-2011, 11:44 AM   #9
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I hope someone replies mine started doing this today, All i did was tighten the motor screws and but on training gears. As soon as I spool up It just starts spinning, i have tried 3 different radio's but still the same result.
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Old 02-22-2011, 05:42 PM   #10
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Old 02-22-2011, 07:47 PM   #11
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Assuming the tail pitch servo is still set up correctly, the spinning usually means one of the teeth in the little bevel gears, usually in the front pair, has sheared, and the tail rotor is running a bit slow. MY V200D01 does the same thing when the bevel gears aren't meshing. Make sure they're meshing well both ends- if not, same thing will happen.
The tail gear link rod must be 90 deg at the servo, and 90 deg at the tail when the rudder stick is neutral and the gyro is off.
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Old 02-25-2011, 09:25 PM   #12
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Old 02-25-2011, 09:50 PM   #13
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I am with ya, I changed my main drive gear and the front tail gears and it still spins, WTH.
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Old 02-26-2011, 08:49 AM   #14
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I am with ya, I changed my main drive gear and the front tail gears and it still spins, WTH.
Are you able to trim out the spinning with the rudder trim? Do you have tailblades mounted the right way around for the direction of travel (don't laugh, it happens, even new out of the box). If yes and yes, then the linkage from tail servo to pitch slider needs correcting - the blades have too much pitch in the direction opposite the nose is going. If the tail servo has been shifted on the boom, this pitch angle will have changed. If you can adjust the rotation with the trim lever, then you need to make the appropriate tail control rod length changes to bring the trim back to center. If you can't offset it with trim, either the tail blades are WAY out of position or you have and issue still with gears or the receiver. Make sure the direction of rudder travel made by the gyro is the correct direction. Spinning is also a symptom of the gyro correcting in the wrong direction.
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Old 02-28-2011, 07:02 PM   #15
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pleas be more spacific ! you say tail spins is the tailrotor not countering the torque of the main rotor is the tail totor spining ?please give more detail!
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Old 02-28-2011, 08:18 PM   #16
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Talking tail

When I increase the throttle the heli will start to rotate in circles the whole body goes around and around.I think its the tail servo that I replaced I cant seem to find the correct position.When I try and move the left or right stick left or right it doesnt correct it.I dont really understand the broken language in the manual.I would be willing to ship to someone if they will fix it.
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Old 02-28-2011, 09:22 PM   #17
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Did you replace the servo with exactly the same kind of servo, and did you place it on the same side or in the same orientation (ie servo arm at the back of the servo or the front - the same way it was on the tail before)? If you didn't, that could be where your problem lies.
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Old 02-28-2011, 09:33 PM   #18
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I replaced it with the same servo that came off (digital walker a servo).I looked at the picture and mounted it like the picture was mounted
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Old 03-01-2011, 12:57 AM   #19
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Just wild guess but are you sure you have all the cog gears are tightly fitting (ie none is stripped or something). Also check the tail shaft inside the boom if it's ok.
Check for notches on the main gear and little white one which is there if they are not stripped (i would assume they are not).
I would also check tail head on it's shaft (where tail blades spin). Is it free to move? Clean it and grease it if it doesn't move smoothly.
Tail servo might simply put not enough tail blades pitch to compensate the spin (servo issue i would say).
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Old 03-04-2011, 06:04 PM   #20
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