Is this a cracked rim????
 

Weinmann/Etro 622x15 alloy rim. Is this a crack or just a 'joint' in the rim? not very great camera. thanks.

http://bikeforums.net/attachment.php...hmentid=381952

Joint

Absolutely.

Actually both. The joint in this case is also a crack as it's not been welded together. :) Andy.

"Joint, absolutely, actually it's both". Means nothing to me. COME ON FOLKS, WHICH ONE? Be clear. Is the wheel damaged? Or just cosmetically odd looking. I've been riding on it and went to change tires and saw it. So really, lets have something exact. Can I use it or need to replace. thanks.

It's ok to use.

Yep, just the joint. I've got 2 sets of Sun Rhyno Lite rims, each of which has a visible joint just like that. They weren't very apparent at first, but as I put miles on the wheels they became noticeable. One wheelset has been retired to backup status, the other still being used on trails. With my 225 lb butt riding over rocks and roots, if it was a problem the rims would have come apart by now.

It's a joint.

Be real, you already knew the answer, but didn't take a moment to think.

What are the odds of a perfectly straight and square crack occurring exactly centered between 2 spokes opposite the valve?

As Francis says. Do you not recognize the smiley face after my post? A crack is a void/separation/gap/break (although not here) between two sides/ends/within a otherwise continuous piece. A crack can be intended or indication of failure. Andy.

A crack can also be comment with a bit of intended irony. Very apt on this thread.

I won't make any cracks about joints here, though it's hard to resist.

In some places, crack is illegal, while joints are legal.

How, exactly do you think they make rims?

Two ways to join an extrusion. Pinning-like yours, or welding like this:

How Bike Rims Are Made | adventure journal

You mean they're not cast in a solid loop?

It's a JOINT!!!. Is that clear enough? Andy's comment was facetious but what he meant was that that joint is also an intentional separation in the rim since the joint is pinned, not welded.

You're kidding, right?

Yes.

Having been in this business for 30 years, nothing surprises me. hahaha

I've had customers think the most outlandish things!

They are machined from a solid chunk of billet.

That makes more sense!

My joints crack, if I've sat still long. Does that make ME illegal? Or is it OK as long as I refrain from bending?

All joking aside, that is an interesting concept.

As in how can we make rims that waste the most material ?

I said interesting concept, not easy, practible, cheap, lighweight, etc.
You could machine just the rim, or a disk, or anything in between. Interesting.

BikeForums is a joint where everyone is cracked!

=8-)

It must be a big lathe.