Flyzone Aircore Principle - RCCanada - Canada Radio Controlled Hobby Forum
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Old 02-14-2014, 05:56 PM   #1
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Flyzone Aircore Principle

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Hi I recently purchased the flyzone aircore principle and brought it out to test fly at our indoor field. I am having problems with the plane when you go to take off the plane wants to bank hard right even with full left rudder and even when you go to hand launch the same problem wants to keep banking right my trims and control surfaces are all in the neutral position.. I just want to see if anybody else was having the same problems and if they figured out how to fix the problem.
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Old 02-15-2014, 10:21 AM   #2
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Re: Flyzone Aircore Principle

Do a balance check by suspending the plane (loaded) from the tail and nose in such a manner that it can rotate about those two points if one side (wing) is heavier than the other. Add (or subtract if possible) weight to balance.
Then do a quick C0fG check to make sure it is not tail heavy.
Check your wings while looking at the nose with your sight centered on the leading edge of the wings. Follow the leading edge of the right wing (the pilots right) out from the fuse, and watch carefully how the trailing edge runs to see if it stays parallel to (follows) the leading edge. If it stays parallel for about 2/3rds the way out from the fuse and then begins to rise above the LE, that's OK. If it falls below the LE it will stall that wing (it drops down, tip stalls) during the slow takeoff period. The wing is warped but it can be forced back where it should be with a warping jig and heat from a gun.
Edit: I just had a look at this plane and now realize it should balance out OK since it is very simple. Might be worth a check though. It also has no ailerons so that makes it difficult to trim for stall roll or wing tip stall.
With respect to the wing attack angle though I would compare the two wings on that bird to see if one is not parallel to the other. (ie; one has a greater angle of attack than the other) The right one, again, may have the greater angle which is causing it to stall.
Hand launching under those conditions would be the most unforgiving. Try a taxi take off and try to get as much speed up as you can before lift off (ease the throttle up). Try bending the tail gear down a smidge to raise the tail to decrease the taxi angle of attack. The planes power system may be a tad weak too and this will make take offs more likely to incur stall troubles.
Make sure you are starting out with a freshly fully charged battery. Some of these RTF models come with a battery of dubious quality, and they just don't have enough punch for long enough to get the plane flying. There is just too much time spent in that stall stage at takeoff.

Last edited by fixer; 02-17-2014 at 02:55 PM. Reason: added text
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