Change in Blade Tracking Helimax Axe - RCCanada - Canada Radio Controlled Hobby Forum
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Old 06-30-2011, 08:41 PM   #1
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Change in Blade Tracking Helimax Axe

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Good Day and Happy Canada Day.

I finally had a good day to get my heli's out again, its been about 2 months maybe a bit more. When I flew my Axe in the hover I noticed the tracking was out, It was perfect the last time i flew it and the time before that. in the end i needed a turn and a half of adjustments to track them.

The dampeners are fairly new nothing seems bent the blades have 0 damage on them any idea what could cause this?


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Old 07-01-2011, 07:58 AM   #2
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Re: Change in Blade Tracking Helimax Axe

Hey Chuck. What blade type?

Making the assumption that your mechanicals and control linkages are good and slop free, there are a few things that can cause this.

Depending on the blade material you can find temp and humidity can affect their shape and accuracy. I found this particularly true for wood and Extreme plastic blades. Also, if the blades were stored in a holder under some stress then that can deform a blade over time.

Another problem are the covered wood blades. In a lot of cases the covering can come loose and aerodynamic loads can cause the cover to lift or shift when at speed, altering their behavior. You can test by holding each end of a blade and giving it a slight twist. If any wrinkles appear then the covering is not bonded to the wood. Take a heat gun and slowly apply heat to BOTH sides of the blade. The covering will get sloppy just before twanging tight again. While still hot take a rag and wipe along the covering to ensure a good bond to the underlying wood.

Avoid heat at joints and ends where that softening of the original adhesive and tightening can pull a seam apart.

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Old 07-01-2011, 11:31 AM   #3
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Re: Change in Blade Tracking Helimax Axe

I would confirm that the feathering shaft is not bent, remove one blade and rotate the feathering shaft with an allen key while watching the other blade tip, it should not move. If it seems to occilate remove the feathering shaft and check it on a flat surface.
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Old 07-01-2011, 11:40 AM   #4
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Re: Change in Blade Tracking Helimax Axe

Thank for the replies guys.

The feathering shaft is indeed streight. it is a weakness with the Axe.
The Blades are stock Helimax Axe covered wooden blades. maybe it was a humidity issue.
I flew it again today and the tracking was still as i left it yesterday.

I'm open to any other suggestions
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Old 07-01-2011, 11:56 PM   #5
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Re: Change in Blade Tracking Helimax Axe

I think Cougar probably hit the nail on the head. Wood blades warp over time. Not a big deal. Just re-track and carry on.
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