Flush rivets

[Bryan Cotton]

Hi all,

I looked up the spec on the CCC flush rivets called out for my aft spar. It looks like they are 120 degree heads, same as avex. Is this right? I pulled a couple in scrap, one with a regular 100 degree dimple and one with a 120 and neither fit great compared to a dimpled solid rivet. Basically the rivet sits just above flush and will need a little sanding so the big Y part of the tail can lay flush on the aft spar when the tail is attached to the fuselage. Is there a special die?

[Bryan Cotton]

Found my answer:
About 2 years ago AVEX changed some dimensions on their rivets, making the
head bigger. We changed the 120 degree dimple dies from the old dimensions
(smaller / thinner rivet head) to the newer larger / thicker rivet head at
that time. You will need the newer version dimple dies for the new style
rivets. If for some reason that does not work, I can get some of the
rivets from you and machine a set of dies to fit your rivets.

Bob Avery