Originally Posted by
SurferRosa
Let's backtrack...
True, you don't want to use a hub spaced at 120mm in a 126mm frame.
I forgot about the issue of the skewer length. This would be a deal breaker for an Ofmega hub (unless you can find one on ebay or somewhere).
You asked about the fragility of the ofmega hub. The skewer nut is aluminum, so you cannot skimp on skewer length. Mine is 153mm long. Yours needs to be in a similar ballpark to use in a 126mm frame.
If the skewer is long enough, I'd like to hear an objection to using a WM 08 in place of the original axle. I can't think of a reason you can't do that or at least try it.
The skewer axle itself from last thread of nut side up until the knurled edge of clamp side when wide open is 150, possibly 152mm.
Do you have the WM-08 specs? If it's threaded where it should be smooth (under the cartridge bearing) that would be my objection.