Mark, I'll not address the thickness for you to use as Scott has posted a very extensive analysis of the various qualities of each. I will however post this on the net, instead of as a private email. Solid rivets can be set using a piece of flat stock steel and hammer. Hinges on my current project or countersunk to accept the skin dimple then attached using AN3 rivets, which are 5/32. Very, very easy to set. There is a saying, "your worst rivet is 90% as strong as your best". Go ahead and whack them with a hammer.
Mark, when you make your final determination, and I recommend thinner and use stiffiners, measure the brake and hinge configuration, let me know and I'll send you the proper size rivets. Dana Overall 1999 & 2000 National KR Gathering host Richmond, KY i39 RV-7 slider, Imron black, "Black Magic" Finish kit 13B Rotary. Hangar flying my Dynon. http://rvflying.tripod.com/aero1.jpg http://rvflying.tripod.com/aero3.jpg http://rvflying.tripod.com/blackrudder.jpg do not archive