Originally Posted by
Andy_K
I can see how potentially, that would be troublesome, although apparently Soma isn't worried about it. As long as you spread the frame the same way every time, it would line up. But I definitely see your point.
Spreading a frame 2.5mm to acommodate a hub is nothing to worry about. That's why Soma isn't concerned about caliper and disc alignment on their DCDC frame. Think about it... you're spreading the frame about 1.25mm on each side. Do you realize how far 1.25mm is?
Besides that... it's the orientation of the hub and the caliper to one another that matters... not the distance between the dropouts. The only way that you'd have a disc alignment problem is if you spread the stays so far that the caliper mounting angle changes dramatically. And 1.25mm (half of the 2.5mm total spread) is not even close to making that happen. Your steel frame would be popping welds long before you reached the caliper misalignment stage.