Originally Posted by
bikemig
Yeah I've been wondering how to measure the reach on a u brake. If I measure from the "center" of where the two arms cross, I get a reach of a bit over 90 mm. With caliper brakes you measure from the bolt hole brake center but of course there is no center bolt with a u brake.
So I guess with u brakes, you measure from the bolt hole which the arm is screwed into. If that's the case, then the reach on my bike is 44 mm and this brake will work perfectly. I may give this a try since Modern Bike is a few blocks from my house which makes returns easy as pie.
Yeah, that's also what I was thinking regarding how to measure the reach on these. Keep us updated on your progress. There isn't much info out there on upgrading u-brakes on vintage mountain bikes despite their being lots of u-brakes on the market. The more documentation, the better.