by flyalaz » Thu Sep 13, 2007 10:15 pm
I thought those were the ones. The rivet heads were all driven from inside the end cap, so the rivet gun snap needs a small diameter shaft to clear the radius near the flanges, and a homemade tool as I described works.
The holes in the cap look a little big in the picture. They should be drill #30 or around .125"-.128" diameter. A couple thou bigger isn't too bad because the rivets expand a little when driven. If the holes are a lot bigger, you might be forced to go up to 5/32" diameter rivets, but then you will get edge material problems that isn't any better, and the larger heads will probably foul in the radius of the cap flanges.
If big holes happen to be the case, NAS1097 reduced head rivets have a 5/32" shank but have the 1/8" rivet head, and those could be used at the radius areas. Regular MS20426-5-? rivets could be used where you have at least .310" edge material.
These are just suggestions and maybe could be kicked around by some of the guys to see if there might be another fix.
Cheers,
Karl