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Unread 12-11-2007, 22:55
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DonRotolo DonRotolo is offline
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Re: Ribbit Rivet...

Quote:
Originally Posted by Gary Dillard View Post
If the hole is too large, you will not get the shear capability, and tensile capability will be next to nothing.
Agreed, but remember we're talking about pop-rivets, not real rivets. I have yet to measure the holes in a kitbot, but I suspect they are only about 0.012 oversize, which is right where the rivets - er, pop-rivets, want them.
Quote:
Originally Posted by francistexas View Post
Using steel rivets is another story.
Fascinating - here I am thinking that the 600 or so lbs of shear strength of aluminum rivets versus the over 1200 lbs for steel rivets is not enough... But, reconsidering, perhaps it is plenty, especially if we use a good adhesive that will fill in any gaps in the hole (point taken, Gary) and also add to the joint strength - some kind of epoxy paste I suppose. High compressive strength, good adhesion to aliminum, can manage some shock without cracking.

Although steel is less expensive, at $13 per 100 for 'expensive' aluminum I can't see it as being much of an issue.

Don
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