I have read where the wing bolts can sometimes come loose while flying. Instead of using the bolts to hold the wings on would it make sense to cut the heads off of the bolts and glue the threaded part into the wings forming a stud so that a nyloc or a nut could be used when mounting the wings to the fuselage? You could drill a hole in the stud for a safety pin to keep the nut from coming off in flight in much the same way as you pin the anti-rotation dowels. It seems that this would provide a positive way of attaching the wings with very little risk of them coming off in flight....

That will make it a lot more work to put the wings on, and the 4mm screw will be tough to drill.

Tf

There is not much force on the wing screws just drill(small) and pin your aft anti rotation pins. This would hold it without bolts if the bolts came out..If your bolts are always comming loose then put just a tad of blue loctite on the threads about every 25 flights. They will be a little more stiff going in but wont back out.

I still don't understand the problem that people may be having here. I've put close to 200 flights on 28% Wild Hare planes and have NEVER had a wing retainer screw loosen in flight. All I've used is a flat fender washer and a lock washer between the bolt head and fuselage. Other than drilling the locator pin and using the hairpin cotters that are included in the hardware pack, there is no need to do any more than that. Really!

Instead of a lockwasher between the small fender washer supplied
and the head of the 4MM socket head screw/bolt, I place a bonded
washer. Like Silversurfer, I have not had a wing retaining bolt/screw
come loose in over 50 flights. Plan to do the same on my 260 which has
4 wing retaining screws/bolts.

Gerald

I have the same setup Silversurfer does,, works fine,,,

I just turned 40 hours of flight time on my Edge and so far all I have lost is 2 screws both on the right side of the canopy so now i put a small slice of fuel line over the screw under the washer to squish when i tighten the canopy down Im sure the same thing would work on the wing bolts. I ussually tighten the wing bolts up enough not to worry about it. I also did the same thing to the 4 cowelling bolts and I havent had a bit of trouble with them without using any locktight.

All you have to do is get bonded washers for the wing bolts and canopy screws..even the cowl..they hold tight and dont vibrate loose

What is a Silversurfer bonded washer?

LOL!! Not sure what a 'Silversurfer" bonded washer is but here is where to get regular bonded washers

http://www.microfasteners.com/catalo...ts/WASFWRB.cfm

Cheap fix . . put teflon tape on bolts . . .they will stay tight.

Not sure what all the wing bolt hub-bub is about.

I am using stock 4mm bolts and fender washers. My BME 50 shakes pretty good at low Idle....52 flights they have never came loose.

The only bolts I ever had an issue with were the two RH cowell bolts....Used a little blue loctite and teflon washers no problems since.