With a band-on wing, there's a balance between firmness in holding the wing on straight and ability to stetch to mute vibrations and absorb the forces subjected to it by a cartwheel landing. Obviously the balance is different for different planes- the formula for a big trainer is thick rubber bands and lots of them.This lightly built wing with its balsa spars suggests airing on the side of mounting it to pop off rather than break in half and yield to any large stresses applied to it.
I'm using four 1/16" rubber bands, which are well suited to the size of the wing.
I made the hooks out of plain wire, not specially tempered music wire or anything. The front ones are located as per the plan, but attached differently, with roots running down into the pod along a former. I used quite a bit of gorilla glue and epoxy to secure them.
I held the wing in place and stretched a band over from the front hooks to see where the rear hook should be to put the right amount of tension in the rubber.The rear hook is on top of the boom, where I drilled a hole (angled back toward the tail) to match the wire gauge and glued in a straight piece of wire:
The wing rests are glue on just slightly uneven, so the wing tilts to the right. I added balsa shims and sanded them down to get the the wing to sit evenly. It's only off by about 1/32" so they're very thin.
This arrangement is great except it doesn't provide much grip to keep the wing from yawing relative to the fuse. To solve this I made a little divider, as explained by the pictures:
It's great because it centers the wing automatically after getting twisted. I had to hold the wing in this position to take the picture; afterwards it sprang back.
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