Any of you guys that have assembled the Composite Bobcat, could you give me a hand with this question, please.
Is there suppose to be a gap of 1/16" between the booms and the wing root. It looks that if I get the wing root snugged right up to the boom the flap will bind on the boom. The instructions do say, when installing the phenolic tubes into the booms, to have a 1/16" exposed on either side. The side that fits from the boom to the fuse, nicely fits under the wing cut out in the fuse. The side from the boom to the wing will just butt up to the phenolic tube and stop when installed on the spars. Most pictures I see of finished products don't seem to show much gap. Maybe I am doing something wrong here.
Thanks for your replies in advance.

Hi AKB,

My BobCat is not the composite version, is scrath build from BVM plans and I built the flaps version.

You can see in my pics there is not gap betwen the root and the boom, you only must sand the root flap a little.

BR

Jesus

AKB, I had the same issue with my comp BC, What i did was too add a filler to close the gap between the wing and the booms and the fuse and the boom. I wrapped the booms with plastic wrap and i used aeropoxy on the wins and the fuse to seal the gap. when the aeropoxy sets use body putty to fill in any wrinkles that the plastic wrap left in the fillet.



Alan

I had the same problem too. Basicly sanded down the inside of the flap at the same angle of the boom. There is plenty of areopoxy in that area so you shouldn,t burn through. About 40 flights so far and don't see any concerns. Hope this helps.

Ditto, had the same EXACT thing on the same wing in the same area. A little sanding and all is fine, no problems. I also saw the same situation on another local Comp. BC, so it's probably a fixture issue in production, but not a problem to be concerned about.

George

Thanks fellows it seems like sanding down that flap is the solution here.
Good flying to you all this season.


AKB