Aileron control rod connection screw

[atypicalguy]

Is there a secret source for 3/32 cherrymax rivets? Spruce seems not to have anything smaller than -4.

I don't feel like I am trying to do anything weird here. Surely someone has tiny center pull rivets like the other wing has.

[6643]

Are these to retain the nut plates? Otherwise, 3/32" rivets are not structural.

If you can get the nut plates in there, can't you get a bucking bar in, too?

Cherry CCR264 (countersunk) and CCR274 (universal) Nutplate rivets are available in 3/32".

[atypicalguy]

Are these to retain the nut plates? Otherwise, 3/32" rivets are not structural.

If you can get the nut plates in there, can't you get a bucking bar in, too?

Cherry CCR264 (countersunk) and CCR274 (universal) Nutplate rivets are available in 3/32".

Yes the right wing flap hinge nutplates are held in with countersunk 3/32 cherry max rivets. They are countersink into the wing spar, though. So the nut plates are probably normal on the inside, not countersink. I think I posted a pic above showing those nutplate rivets.

I got the nuts off the back of the left wing flap hinges, but riveting in some nut plates seems like a better way to go, especially since the rivet holes already exist in the rear spar (or whatever that piece of metal is that the flaps attach to).

[8342]

Anyone know what size these little nut plates are

AN366F-1032

Ok so Univair has them superceded by MS21047-L3, which seems to not have an elastomeric lock, but rather is all metal. I seem to recall people not liking nylock hardware for these blind applications, as they are only good for a few uses. So I will go for the metal ones I think: https://www.wicksaircraft.com/shop/anch ... g-ms21047/

The originals were elastromeric lock nuts that were riveted in using standard countersink rivets. I replaced the ones in the photo with new.

Rick

[6643]

I got the nuts off the back of the left wing flap hinges, but riveting in some nut plates seems like a better way to go...

Just nuts? That's sketchy at best. The nut plate distributes the load over a much larger area. Maybe with a large area washer...

I don't see anything wrong with using pulled rivets as it's non-structural and non-critical.

The original nutplates had a fiber material in them. Nylon ones are the correct replacement. That said, there's proably no reason you couldn't use the all metal ones. Ask your PMI. Like I said, how many times do you anticipate taking the flaps off between fabric replacements?

[atypicalguy]

I got the nuts off the back of the left wing flap hinges, but riveting in some nut plates seems like a better way to go...

Just nuts? That's sketchy at best. The nut plate distributes the load over a much larger area. Maybe with a large area washer...

I don't see anything wrong with using pulled rivets as it's non-structural and non-critical.

The original nutplates had a fiber material in them. Nylon ones are the correct replacement. That said, there's proably no reason you couldn't use the all metal ones. Ask your PMI. Like I said, how many times do you anticipate taking the flaps off between fabric replacements?

Thanks. I also thought just nuts was "just nuts". I don't know who thought that was a good idea. Clearly it was manufactured for nut plates.

If the wing were apart then I would use standard rivets. It is hard to get a finger in there let alone a bucking bar. We used fancy tungsten ones for the tail bulkhead but this is even more restricted a space than that.