On Oct 28, 12:48 pm, wrote:
Nashbar has a good deal on ultegra brake calipers; I mounted them on
my front wheel. My rear caliper is kinda corroded, and I was
considering mounting another front caliper on the rear wheel... Is
this a good idea?

It should work fine if you use a washer and a regular nut instead of
the recessed one that comes with it.