Stems breaking well below head

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psalter
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Re: Stems breaking well below head

Post by psalter »

Technically, these are non structural rivets, but are sufficient for our purposes. Structural rivets usually have a locking ring to hold the stem in place. Then you can count the stem as part of the strength of the rivet.
Paul Salter
Team Panther
Engineer and Builder

Brad
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Stems breaking well below head

Post by Brad »

Riveted first elevator. I have been dreading proud rivet stems...actually the opposite is happening, the stems are breaking off well below the head, maybe an 1/8” below, On both CS and protruding rivets. I was under the impression that the stem added to rivet strength. These stems are breaking below the skins. Also I have 3 rivets that have split on the shop side and the stem “ball” fell out so I replaced them, is that necessary?

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