Spar rivets-fractured shop heads.
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A forum for Panther aircraft builders and Enthusiasts. Two simple rules: Play nice and use a real name
A forum for Panther aircraft builders and Enthusiasts. Two simple rules: Play nice and use a real name
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Brad
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Re: Spar rivets-fractured shop heads.
Ron, yes that is what a few of my rivets looked like, some were worse. Fortunately they were on the “thin” part of the spar so I was able to successfully drill them out and replace them. Don’t try to drill out rivets on the “thicker” sections, it doesn’t work. There is actually a Mil spec guide on rivets that includes fractured rivets. Brad
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RonFranck
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Re: Spar rivets-fractured shop heads.
Brad,
After reading your post it prompted me to re-examine the rivets on my spar. I noticed some very minor cracks on only a few rivets but nothing I felt that was of concern. I have heard of age hardening with rivets but I have no idea how old a rivet can be before it's unusable or exactly what conditions such a rivet would exhibit that would indicate a problem.
I've attached a close-up image of a rivet in my spar that has a very small crack on it's edge.
I hope this helps.
After reading your post it prompted me to re-examine the rivets on my spar. I noticed some very minor cracks on only a few rivets but nothing I felt that was of concern. I have heard of age hardening with rivets but I have no idea how old a rivet can be before it's unusable or exactly what conditions such a rivet would exhibit that would indicate a problem.
I've attached a close-up image of a rivet in my spar that has a very small crack on it's edge.
I hope this helps.
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Barry
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Re: Spar rivets-fractured shop heads.
Brad,
If you are using the factory squeezer from Panther, be sure that the shop head is perfectly centered in the squeezer before squeezing. I had the same issue on a few and that was my problem. Don’t stress over it, they won’t fall out!
Barry
If you are using the factory squeezer from Panther, be sure that the shop head is perfectly centered in the squeezer before squeezing. I had the same issue on a few and that was my problem. Don’t stress over it, they won’t fall out!
Barry
Panther Sport #95
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Brad
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- First Name: Brad
- Last Name: Carter
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Spar rivets-fractured shop heads.
Spar riveting is mostly going well...however. I am noticing a few fractured shop heads, the rivet shop heads have a rough surface and there are visible cracks and splitting after setting. I am using the same squeezing technique for all the rivets, most turn out fine. Any thoughts on this, bad rivets, bad technique, bad luck? Brad Carter