I haven't done any sciency research into this, but: Will the be a big difference in performance between braze-on centerpulls (rigidly attached to the frame at two points) and center-pivot bolt-on centerpulls (attached at a single point, where the brake can rotate around as torque is unevenly applied to each side of the wheel?
*Hells* yeah! I'm confident enough about this that braze-on centerpull posts are part of my medium-term plan for my old Raleigh International, along with an assortment of rackmounts and a kickstand plate. My original plans had been to use Pauls, because Pauls were what was available; now I'm inclining more to Compass Bike's centerpulls, which are MAFAC Raid clones, just for the aesthetics. http://www.compasscycle.com/brakesCmCpl.html I suspect the braze-on variant of the Pauls will be easier to adjust, because they eliminate caliper position as a variable; you'll have to center the wheel between the brake arms, because the brake arms aren't moving. With a center-bolt brake, the brake can rotate, so you have to finesse both the brake and the wheel into the ideal position and then clamp them down (but not too hard). The posts remove a little fiddling. As for Pauls themselves, they are the brute force brakes par excellence. I use a pair of MotoBMXes on a VooDoo mountain frame that I converted to a 700c wheelset using a Mavic Caliper Adjuster. They are the strongest rim brakes by far that I've ever ridden. On Saturday, January 17, 2015 at 8:16:55 AM UTC-8, Doug Williams wrote: > > Peter, > > Thanks for making this clear for me! I had visited Paul's website, but due > to insufficient brain power, I didn't have a clear understanding of the > difference between the braze-on version and the center-mount version > (except for the obvious part about the braze-on version requiring specially > positioned braze-on's). I missed the center mount conversion kit link that > you posted below. Now everything is clear to me. > > I'm getting Paul Racers for my new 58cm 650b Homer. I want to run 42mm > tires and P50 LongBoard fenders. Hopefully the Paul Racers will help with > clearance issues as well as stopping the bike. Actually, I'm quite certain > that they will...because Mark said so when I called Riv. :-) Obviously, > I'm going with the center mount version because I'm not eager to take a > torch to my new frame! My frame was ordered December 30th, so now I am just > waiting...waiting...waiting. :-( > > Miles and years down the road when I need a repaint, I might consider > adding the braze-on's...if I was convinced that there was going to be a big > difference in performance and/or ease of adjustment. Is there really a > convincing case for that? > > Doug Williams > > On Saturday, January 17, 2015 at 1:57:46 AM UTC-8, Peter Adler wrote: >> >> Correction: The center-mount Racers are identical to the braze-on Racers >> - they just have the additional bolt-on bridge and pivots installed, which >> keeps the bearings spaced correctly and attaches to the frame/fork brake >> holes. That's the reason the braze-ons are $14 cheaper than the bolt-ons: >> Fewer parts. Paul sells an aftermarket conversion kit for braze-ons for $50: >> >> http://www.paulcomp.com/spareparts/racercentermountkit.html?relatedid=355 >> <http://www.google.com/url?q=http%3A%2F%2Fwww.paulcomp.com%2Fspareparts%2Fracercentermountkit.html%3Frelatedid%3D355&sa=D&sntz=1&usg=AFQjCNETcl21hbq1PdjKgnsLP7WnB2OZLg> >> >> Considering that the bolt-on conversion kit costs $35 more than getting >> the bolt-on bridge preinstalled, I think the shrewd purchase is to buy the >> bolt-on version and then pull off the bridge when you've finally gotten the >> canti posts brazed on in the correct position. Not only does it give you >> the option of using the brakes before you've gotten your act together for >> torch surgery, but you have more resale options down the road. >> >> Peter Adler >> Berkeley, CA/USA >> >> On Thursday, January 15, 2015 at 1:46:17 PM UTC-8, Tim Gavin wrote: >>> >>> Paul Racers are available as braze-on only (to be mounted on a fork with >>> dedicated braze-ons), or the bolt-on version (which I have) which has a >>> bridge between the arms to mount to the standard brake hole. >>> >> -- 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.
