Any setting in Spirit for tail wag

[Blindspot]

Got a Blade 360 CFX 3 cell. Been using spirit for last several weeks and its amazing.



Are there any setting within the Spirit unit software that will help me with a tail wag on my Blade 360 CFX. I have went through the usual checks, not in spirit settings but usual heli tail wag checks like tightening belt, policing tail parts, tightening screws and so on but still get tail wag at acceleration and turns.

[xoexoe]

Is it very fast jittering wag, maybe 8 oscillations per second? Or is it very slow maybe 2 per second?

[Blindspot]

Originally Posted by xoexoe

Is it very fast jittering wag, maybe 8 oscillations per second? Or is it very slow maybe 2 per second?

I would have to say slow, maybe 2 per second...

[BrokeDad]

Turn your Gyro setting down on your radio. What do you have it set at ?

[Blindspot]

Originally Posted by BrokeDad

Turn your Gyro setting down on your radio. What do you have it set at ?

Yep, done all of that, this all stemmed from a stripped main gear, after I put in new one I haven't been able to get the wag out. Originally I was set at 90 for perfect tail setup, now I have experimented higher and lower to same result if not worst.


I guess you are alluding to what I figured, I need to figure it out mechanically, just was hoping by miracle there was a setting in Spirit that would correct it, wishful thinking. Back to the drawing board, thanks anyway. I'll get it...

[Xrayted]

Assuming the model was working fine at one point, slow wag that doesnt respond to tail gain changes is almost always binding in the tail setup somewhere. Either from the tail rod itself to the tail slider mechanics.

It could also be from damaged thrust bearings within the tail that will feel fine on the bench but will start to lock up when the tail is taxed in any way, or if the thrust bearings have been installed backwards.

You say you stripped a main gear. Was the tail involved in any way or have you been in the tail replacing parts recently?

You original post says the wag comes on in FFF and turns. This is most commonly caused by the tail gain being too high either electronically or mechanically if lowering the gain has no effect, or if the main rotor governor gain is too high if using a governor of any kind.

The next test there is to disable the governor or move the tail servo ball in hole hole on the servo arm and set the tail up again and see if things improve. This doesnt apply if the model was flying just fine before the gear change, but your original post is not very clear if this has been and issue from the very start or not

[Blindspot]

Originally Posted by Xrayted

Assuming the model was working fine at one point, slow wag that doesnt respond to tail gain changes is almost always binding in the tail setup somewhere. Either from the tail rod itself to the tail slider mechanics.

It could also be from damaged thrust bearings within the tail that will feel fine on the bench but will start to lock up when the tail is taxed in any way, or if the thrust bearings have been installed backwards.

You say you stripped a main gear. Was the tail involved in any way or have you been in the tail replacing parts recently?

You original post says the wag comes on in FFF and turns. This is most commonly caused by the tail gain being too high either electronically or mechanically if lowering the gain has no effect, or if the main rotor governor gain is too high if using a governor of any kind.

The next test there is to disable the governor or move the tail servo ball in hole hole on the servo arm and set the tail up again and see if things improve. This doesnt apply if the model was flying just fine before the gear change, but your original post is not very clear if this has been and issue from the very start or not

Before stripped gear and 3 foot fall in tall grass it worked fine. After replacing gear his all started. So I will look at tail and check all that you stated. It has to be isolated in one of these areas. Also I have no governor.

[Low_Cal]

Blindspot, can you post a follow-up on this? I'm having the same problem with tail wag, and adjusting the gyro gain only changes how fast it wags. I had quite a few tip-overs and stripped main drive gears before I replaced the AR636.

[mb-1953]

You should also check the linkage to the tail and confirm that all moves smoothly and easliy.

[BrokeDad]

If it's an up and down wag instead of a side to side it could be cyclic gain. If that is what is happening try lowering it by 5 a little at a time.

[Blindspot]

Originally Posted by Low_Cal

Blindspot, can you post a follow-up on this? I'm having the same problem with tail wag, and adjusting the gyro gain only changes how fast it wags. I had quite a few tip-overs and stripped main drive gears before I replaced the AR636.

So the stripped gear started for unrelated reason but when I put on new gear that gear was out of round causing numerous tail issues to ultimately stripping out again. I saw on different post where some of those gears if not most were made from mold and were out of round therefore making it kind of lose contact at points. I made sure I went out and purchased a cnc machined gear, which was round. Then I put that one on and decreased gyro gain a bit, I think from 95 to 85 and then I was in business, no more issues for most part.

[Low_Cal]

Originally Posted by Blindspot

So the stripped gear started for unrelated reason but when I put on new gear that gear was out of round causing numerous tail issues to ultimately stripping out again. I saw on different post where some of those gears if not most were made from mold and were out of round therefore making it kind of lose contact at points. I made sure I went out and purchased a cnc machined gear, which was round. Then I put that one on and decreased gyro gain a bit, I think from 95 to 85 and then I was in business, no more issues for most part.

Interesting! I would like to try one of those CNC gears - where do I get one?