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Old Feb 21, 2007, 02:34 PM
Will work for Heli's
asinla's Avatar
Los Angeles
Joined May 2006
247 Posts
Question
What would make my heli hover lopsided??

I have a strange problem!

I recently replaced all the electronics on a Walker 22E (please don't run away!) with separates. Everything went fine..got it dialed in then yesterday when I flew it appears that the heli hovers lopsided to the right.
When I hover at eye level the blades ore really leaning right as is the whole heli!

I took the head apart and checked the main shaft, checked the tracking, flybar is straight, the frame is good, no flexing, checked the linkage lengths...all good.

I am really stumped!!

Any ideas?? I can shoot some vid if it is going to help.

Thanks in advance.
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Old Feb 21, 2007, 02:37 PM
Mom says I'm special...
beafraid8's Avatar
Aurora, CO
Joined Apr 2003
2,562 Posts
It's normal, don't worry about it. It's off-setting the thrust the tail is putting out to stop the heli from torque-ing around.
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Old Feb 21, 2007, 02:53 PM
Will work for Heli's
asinla's Avatar
Los Angeles
Joined May 2006
247 Posts
Hmmmm...it never did that before I switched to seperates though. It looks really strange and I think it is not optimal for the power system Sounds like the heli is straining all the time and my flight times are down.

I also have to give constant right rudder even at full right rudder trim so the tail thrust is clearly not enough.

Thanks beafraid!

asinla
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Old Feb 21, 2007, 03:14 PM
That whirly guy
Bothersome's Avatar
Vivian, LA
Joined Jan 2007
830 Posts
Too much pitch are on the main blades. You need to take out some of the pitch so that the head speed will come up some. Basically you're creating too much drag. The more drag on the main blades the more the tail has to put out to offset the torque. This causes the heli to lean more to the right to offset the tail push.
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Old Feb 21, 2007, 05:06 PM
Will work for Heli's
asinla's Avatar
Los Angeles
Joined May 2006
247 Posts
GREAT!!!!

Thanks Bothersome.

I'll try that now.

asinla
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Old Feb 21, 2007, 05:35 PM
Mom says I'm special...
beafraid8's Avatar
Aurora, CO
Joined Apr 2003
2,562 Posts
Your gyro will be able to compensate better too (the right-rudder bit), because you'll maintain a more constant headspeed.
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Old Feb 21, 2007, 05:40 PM
Will work for Heli's
asinla's Avatar
Los Angeles
Joined May 2006
247 Posts
WOOHOOOOOO!!

Success!! Thanks so much guys! I reduced the pitch and fooled around with the pitch curves in the tx. No more leaning to the right and WAY better gyro behavior.
I had the best flight so far with seperates.

I LOVE HELI"S!!!!!! LOL!!!

Thanks again.

asinla
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Old Feb 21, 2007, 05:45 PM
Mom says I'm special...
beafraid8's Avatar
Aurora, CO
Joined Apr 2003
2,562 Posts
Do you have a pitch gauge? If not, get one...you're better off leaving your pitch curves fairly standard as you go from heli to heli, and adjusting everything mechanically perfect to avoid weird mixing interactions.
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Old Feb 21, 2007, 06:27 PM
Will work for Heli's
asinla's Avatar
Los Angeles
Joined May 2006
247 Posts
Yes...good idea. I have everything except that.

Will get one next week for my birthday.

Thanks for the good advice!
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