A timely topic for discussion, this is. I've recently encountered the same problem on one of my bikes. It is a Surly 1x1 and for years I've had a problem mounting a rear fender because the arms on the run-of-the-mill Shimano linear pull brake aren't long enough to accommodate both a fender and a 60mm Schwalbe "balloon" tire. So last Winter I decided to do something about it and got ahold of a Tektro 857AL brake with 110mm arms, long enough to clear the tire and fender. The set up worked out very well - clearance is great. The actual application, not so much. After a few weeks of riding, a tremendous squeal started from the rear brake (the front has a disc). Now, these particular Tektros are very cheap brakes, apparently made for low-end bikes, so I notice quite a bit of play in the arms at the point where they bolt onto the seat stay mounts. That's what I'm blaming for the squealing - an oscillation caused by a tiny back and forth movement of the arms as the pads grip the rims while braking. I plan to get some thin washers to place under the arm pivots to see if I can take up some of the slack. 'Course, I could be wrong. As someone else on this thread mentioned, the longer Kool Stop pads may be part of the problem, too. So that'll be step 2 if this solution doesn't work.
On Tuesday, July 29, 2014 12:02:32 PM UTC-5, Liesl wrote: > > Riddle me this, Batman! What causes different pitches in brake squeal? > (I got to thinking about this given the bell thread.) Here are the > instruments: > > Bike one: Pitch is a high D. Quickbeam with 700c Araya TX310F rims, > Shimano cantilever brakes with koolstop pads (model unknown; whatever cam > stock on a QB), Shimano Tiagra Road Brake Levers, and panaracer paselas. > > Bike two: Pitch is a low E (yes, almost an octave between the two > bikes). Custom with 26" Aeroheat rims, Paul Touring canti's with koolstop > pads, Shimano MTB silver brake levers, and Big Bens. > > Let the theories commence! > > Inquiringly yours, > RCW > > PS. They sound like a great two-tone car horn when braking simultaneously. > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
