Cracked rim?
08-23-17, 09:13 PM
#1
Senior Member
Thread Starter
Cracked rim?
I sent my powertab hub off to powertap for new bearings. They told me that my rim was cracked.
I got my wheel back and looked for the crack. I see where the ends of the aluminum come together. But I can't find a "crack". Is there a place I should be looking in particular? Is it possible that they would think the annealed joint is the crack? I mean they do this for a living, and it's a powertap-branded aluminum wheel.
I got my wheel back and looked for the crack. I see where the ends of the aluminum come together. But I can't find a "crack". Is there a place I should be looking in particular? Is it possible that they would think the annealed joint is the crack? I mean they do this for a living, and it's a powertap-branded aluminum wheel.
08-24-17, 12:35 PM
#4
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"welded Rims" are first welded, then machined smooth... when the weld cracks, the line is crooked, not straight... welded/machined aluminum rims are not very common.
more than likely, your rim has a PLATED/PINNED joint. Is the line at the joint straight edged? Then the joint is plated/pinned. It is quite normal to have a bit of a straight line obvious at the joint, and unless it has opened more than a tiny bit, the rim is fine.... some pinned rims have machined brake tracks, but the inner joining will show a bit of a line.
get the rim out in the sunlight, take a real close look at the joint with a magnifying glass.... and inspect every spoke hole, too.
more than likely, your rim has a PLATED/PINNED joint. Is the line at the joint straight edged? Then the joint is plated/pinned. It is quite normal to have a bit of a straight line obvious at the joint, and unless it has opened more than a tiny bit, the rim is fine.... some pinned rims have machined brake tracks, but the inner joining will show a bit of a line.
get the rim out in the sunlight, take a real close look at the joint with a magnifying glass.... and inspect every spoke hole, too.
Last edited by maddog34; 08-24-17 at 12:57 PM.
08-24-17, 01:41 PM
#6
Calamari Marionette Ph.D
I sent my powertab hub off to powertap for new bearings. They told me that my rim was cracked.
I got my wheel back and looked for the crack. I see where the ends of the aluminum come together. But I can't find a "crack". Is there a place I should be looking in particular? Is it possible that they would think the annealed joint is the crack? I mean they do this for a living, and it's a powertap-branded aluminum wheel.
I got my wheel back and looked for the crack. I see where the ends of the aluminum come together. But I can't find a "crack". Is there a place I should be looking in particular? Is it possible that they would think the annealed joint is the crack? I mean they do this for a living, and it's a powertap-branded aluminum wheel.
08-24-17, 03:54 PM
#7
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