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Hangar9 Corsair wing folding?

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Old 10-25-2004, 10:26 AM
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spaz4plastik
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Default Hangar9 Corsair wing folding?

My dear wife and kids gave me the Hangar9 Corsair for my birthday. I have read that some folks are experiencing some problems with the wings folding in flight on this model. Does anybody have any ideas about what I should do during the build so I dont end up in the same boat? I am converting this to electric also, any other tips? I have read Greg Covey's article and plan to use most of his setup.
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Old 10-25-2004, 11:28 AM
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Greg Covey
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Default RE: Hangar9 Corsair wing folding?

If you build it per the manual, you won't have a problem with wing folding. I suspect that previous landing damage may have been a contributing factor.

On my Corsair, I used 5-minute epoxy by first gluing the support joiner in one half, testing the fit (after it dries) and then gluing the two halves together...fast.
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Old 10-26-2004, 02:22 PM
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R.J. Rose Ocala FL
 
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Default RE: Hangar9 Corsair wing folding?

Spaz -

I just had one fold on October 24th. It failed in the left intermediate wing section where the wheel wells area. The main spar in this area is two pieces butt jointed near the retract bellcrank. The load carrying part of the spar is aircraft plywood, but only has about a 1" ligament. There is a manufacturing flaw in that the assembler put a 1/16" thick balsa shim in between the two pieces of the spar, using a simple butt joint and no reinforcement. The balsa shim delaminated and the wing separated. My guess is the shim was added during fabrication to get the section to align properly.

My local dealer called Horizon and they have asked to have the airplane returned for investigation. Horizon is furnishing a pre-paid shipping tag and my local hobby shop has boxed it up for shipment. I suspect this is a sample flaw not a widespread problem.

This had nothing to do with the user's assembly. My assembly joints survived both the wing separation and the ultimate crash. As stated in the thread above, just make sure the wing joiner fits tightly and use fresh 30 min epoxy and all will be well.
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Old 10-26-2004, 09:55 PM
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Default RE: Hangar9 Corsair wing folding?

I have looked over the wing pretty good and didnt see any problems. I think I will follow the instructions closely and keep an eye on things.
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