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250 Class Electric Helicopters 250 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


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Old 08-30-2020, 01:04 AM   #1 (permalink)
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Join Date: Sep 2009
Default Trex 300x Main Blade vs Tail Rotor Overlap

I am concerned that there is interference (or overlap) between the spinning circumferential arcs of the main blades and tail rotor. If, during high load negative pitch maneouvers, the main blade disc was to move towards the boom, the tips of the main blade and tips of the tail rotor will overlap and come in contact with each other. They haven't clipped yet but I'm worried they might during extreme negative pitch with low rpm.

My setup is standard.

Is anyone else having this problem? If so, should I be worried or not?
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Old 10-04-2020, 08:00 PM   #2 (permalink)
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Join Date: Apr 2020
Location: Birmingham, AL
Default

I don't think this can happen.

I just held mine up, ran it at 100% power and -11 degrees of pitch, and the blades won't flex near enough to cause contact. I've had a couple of really hard set-downs, where the rotor struck the boom, without any tail rotor contact. I suspect if you can actually flex the rotor that far, you have far more pressing issues to worry about.
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