Which cherrymax rivets???

[Latech15]

I have a couple of rivets in the bottom skin on the fuse of my RV-10 that I can’t get to with a bucking bar. The plans call for a ad426 countersunk 3-3.5 solid rivet. What would be the appropriate size cherry max rivet to use in its place?

I’ve read a lot and searched a lot, and I can’t find an aluminum rivet, cs head, in 3/32 dia. Should I upsize the hole and dimple to 1/8 or use a steel rivet? Or am I just not finding what I’m looking for?

[rvbuilder2002]

Vans approves the use of an MK319-BS blind rivet to be used in place of a 426AD rivet in the length that you mentioned. It does require enlarging the hole diameter to #34 but the rivet head fits the standard dimple pretty well. You can vary slightly machine counter sink and the deadbolt to get a better fit if you desire.

[Jonnyb]

Not withstanding what Scott has said, I have used these with good results.
https://www.aircraftspruce.com/catal...erryRivets.php

[planenutz]

I'm pretty certain you won't find any 3/32" Cherrymax rivets anywhere because as far as I know they don't make them that small. You will have no choice but to go to the 1/8" dia rivets if you want to use Cherrymax (CR3212).

In terms of grip length, if you don't have one of their grip gauges then its a bit of a guess however if you were looking to use a "3-3.5" solid then I'm guessing you're only going through a couple of skins in which case you would most likely need a 4-2 or 4-3 Cherrymax.

Make sure you obtain the correct diameter because Cherrymax also produce an oversize version of the standard 1/8" rivet (CR3242) which is slightly larger and its very easy to confuse the two. The larger version requires a 9/64" drill bit from memory but I stand to be corrected on that.

[wirejock]

Vans sells them
ccr-264ss-3-3

[Walt]

Originally Posted by wirejock

Vans sells them
ccr-264ss-3-3

Those are cherry, not cherrymax

[wirejock]

Originally Posted by Walt

Those are cherry, not cherrymax

My mistake. I only used two of the ones Vans sent in the nutplates for the nose pant. I assumed they were Cherrymax.

[rvbuilder2002]

Originally Posted by wirejock

My mistake. I only used two of the ones Vans sent in the nutplates for the nose pant. I assumed they were Cherrymax.

They’re not, and they aren’t an equivalent strength replacement for an AN426AD3.

[wirejock]

Originally Posted by rvbuilder2002

They’re not, and they aren’t an equivalent strength replacement for an AN426AD3.

I understand.
I used two of them from my kit Vans sent me in the Elastomer Nose Gear Kit, exactly where the plans said to use them. Vans called for four holding the nutplates for the nose gear fairing. I used two because I could drive the other two AN426AD3.

Originally Posted by wirejock

My mistake. I only used two of the ones Vans sent in the nutplates for the nose pant. I assumed they were Cherrymax.

Vans should consider editing the Web Store search algorithm. A search for "CherryMax Rivets" shows them. Maybe post a disclaimer so builders don't use them in the wrong place.
My apologies for the suggestion. Please delete my post.

[Mikeyb]

Cherry Max 3214-4-x rivets. They have the same head as an AN426 AD3 but an 1/8” diameter body. Like an NAS 1097 oops rivet. You have to specify the grip length. Available from
https://www.gen-aircraft-hardware.com.