My Hobbistar trainer's stock method of securing the wing is rubber bands over dowels.



Not much else is stock about this plane, though... the wing has been rebuilt, a lot of the covering has been changed, it's been converted to a tail dragger and at the time of this writing I've just finished installing a DLE 20 2-stroke gaser in place of the original glow engine. So it's high time I converted the wing to bolt on.

I've spent a lot of time thinking about this mod and I've asked a lot of questions. I've settled on a 4-bolt approach using 1/4-20 nylon bolts. The front bolts will go straight down through the thickest part of the wing while the rear bolts will go through a stock reinforcement near the trailing edge of the wing. Here's a rough diagram - not to scale.



The bolts will thread into tapped holes in 1/2" plywood mounts. The mounts will be removable for access to the plethora of stuff packed into the fuselage.