Originally Posted by
pspence
Mercifully, the hubs appear to be the same size. I fitted the new wheel and it fits no problem. Thanks for the heads up since I hadn't measured before ordering the new wheels to see if the hubs would work. If you look at the attached pictures, you can see that the inside of the old wheel has larger permanent spacer than the new one. That seems to be the issue. Agree?
no... the new wheel has a slightly longer freehub body on the wheel hub
as mentioned above by Brad, you will have to have your frame reset to 130 mm....... or change the axle spacer on the NON-drive side, then have the wheel re-dished to compensate for the changed axle width.... one of the two choices...
and then, to install the 7 speed cassette, you will need the spacer mentioned by Bill.... the hub/freehub in the WH-501 wheels are meant for an 8,9, or10 speed cassette, not a 7 speed cassette... the freehub(ratchet) length of a 7 sp. is 32mm... the 8-9-10 is 35mm... spline pattern is the same.
i'd advise resetting the frame to 130mm... that way, in the future, you can just install the much more common 130mm hubbed wheels, and not have to mess with redishing/respacing the wheel/axle again.... and you can also upgrade to 8,9, or 10 speeds, if you choose...
and whatever you choose, do not try to reduce axle length on the freehub side... seen it... the guy messed up a high end italian frame.... "the chain only rubbed every now and then!"... he'd removed a single 1mm washer from that side.......