Looks like an original fabrication problem. I'm thinking that is the weld effected zone where the band is welded to the wheel disk. Kind of unusual....what brand of part are they. I wouldn't let that get in the way of a good purchase. Just grind the cracks to a V and weld them up.
Can always look for an alternate later.
From the looks of it and the direction it is running, the crack is just a typical fatigue crack. Only caution would be to make sure that when the crack is air arced out that you make sure you find both ends of it. Cracks like this can sometimes be longer than they appear. Also, might want to verify the material before choosing a rod, just to be sure.
Those cracks are common after building up the tread area. After welding up they don't usually reapear.
Later Bob
Looks like an original fabrication problem. I'm thinking that is the weld effected zone where the band is welded to the wheel disk. Kind of unusual....what brand of part are they. I wouldn't let that get in the way of a good purchase. Just grind the cracks to a V and weld them up.
Can always look for an alternate later.
[quote="Old Magnet"]Looks like an original fabrication problem. I'm thinking that is the weld effected zone where the band is welded to the wheel disk. Kind of unusual....what brand of part are they. I wouldn't let that get in the way of a good purchase. Just grind the cracks to a V and weld them up.
Can always look for an alternate later.[/quote]
I agree it looks like the heat effected zone between the two base materials
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