Patrick - I'd add one more item to your list. I've got a BB7 on the front of my Surly 1x1 and for years I had trouble with the pads rubbing the rotor, making noises while riding - just as Jan has pointed out as a potential shortcoming of discs. I tried everything; trued the rotor, changed the rotor to new, changed to higher quality pads, etc. Nothing worked as a lasting solution. Finally, I bought a solid axle to replace the QR that came with the hub, installed it, and *bolted* it onto the fork. No problems whatsoever since then including rubbing noise or adjustment issues.
I'm concluding that *some* disc units on *some* forks (especially with QR) may present ongoing problems that only a bolted-on hub will prevent. Now, the BB7 is a lower quality mechanical disc unit so maybe high-end units are different. I also have an early 2000's Trek Fuel 90 MTB (equipped with QR hubs, BTW) that came equipped with Hayes hydro units and they were a continual problem - rubbed or even just plain locked up all the time. I final threw in the towel on 'em last year and upgraded the entire system to Shimano's highest-end brakes. Nary a problem ever since - smooth braking, no grabbing, no rubbing. And the LBS that I bought the Shimano unit from immediately acknowledged the PITA they'd always had with Hayes brakes. So maybe there are a myriad of factors at work and if one gets stuck with an unworkable set up they just have to experiment around until they find out what solves the problem. On Friday, January 13, 2017 at 4:59:20 PM UTC-6, Patrick Moore wrote: > > My Road BB7s work -- stop and feel -- as well as any centerpull I've used, > except that they don't modulate as well, using Jagwire housing and old 740n > Dura Ace levers. There is a trick to setting them up that I learned on the > web: attach the cable to the actuation arms when the latter have been moved > through about 1/3 of their travel, not when they are fully relaxed. This > allows more pad distance while also allowing a "feel" like any caliper I've > used, with very good stopping power. Stock rotors; 160 mm? > > Very much better than the previous MTB BB7s with V brake levers in both > pad clearance and feel; stopping power about the same; same rotors. > > Note that the older version of these road BB7s were among the worst brakes > I've ever used, with the same levers and Jagwire housing. > > Note also that it is possible that I have a lower performance bar than > others may, but I have set up scores of brakes of every different sort over > almost 50 years of tinkering. > > On Fri, Jan 13, 2017 at 3:09 PM, Evan Baird <vanst...@gmail.com > <javascript:>> wrote: > >> While I agree that drop bar hydraulics feel loads better than mechanicals >> in terms of modulation, I'm curious whether Jan knows of any mechanical >> brakes that pass muster. My experience has been that using compressionless >> housing makes a huge difference in terms of power, but I haven't ridden the >> Paul Klampers or the TRP Spyres long enough to form any opinion. I ask >> because I'm planning to try an Ultra Romance style non aero disc brake >> combo on my Ravn build, and you better believe I'm going to ride that thing >> on singletrack. >> >> -- >> 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-bun...@googlegroups.com <javascript:>. >> To post to this group, send email to rbw-owne...@googlegroups.com >> <javascript:>. >> Visit this group at https://groups.google.com/group/rbw-owners-bunch. >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > Resumes, LinkedIn profiles, bios, and letters that get interviews. > By-the-hour resume and LinkedIn coaching. > Other professional writing services. > http://www.resumespecialties.com/ > www.linkedin.com/in/patrickmooreresumespec/ > Patrick Moore > Alburquerque, Nouvelle Mexique, Vereinigte Staaten > ************************************************************************** > ************** > *The point which is the pivot of the norm is the motionless center of a > circumference on the contours of which all conditions, distinctions, and > individualities revolve. *Chuang Tzu > > *Stat crux dum volvitur orbis.* *(The cross stands motionless while the > world revolves.) *Carthusian motto > > *It is *we *who change; *He* remains the same.* Eckhart > > *Kinei hos eromenon.* (*It moves [all things] as the beloved.) *Aristotle > > > -- 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 https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
