Got it. I noticed the canti clarification as I clicked post, but I still wasn't sure why it mattered. Makes sense now. My canti conversion to 622 is the worst stopping bike I have, but there are so many potential reasons for that (pads aren't nice, cable hangers are whack, straddle cable hanger is also whack, cables haven't been adjusted since I built the bike, etc.). I'll try adjusting things before I write it off. The pads hit the rim just fine at least. I'm using some of those old Shimano cantis that everyone recommends. Anyway, I'll keep the MA in mind when I adjust things, but no need to share photos of my brake butchery at the moment. Sorry for derailing the thread.
Paul On Wednesday, August 22, 2018 at 5:31:20 PM UTC-4, Bill Lindsay wrote: > > Paul > > Please don't misunderstand me. I specifically referred to converting from > 27" to 700c on cantilever equipped frames. If the cantilever posts are in > the right place for 630mm rims, you have to run the pads quite low for > 622mm rims and the mechanical advantage gets all messed up, forcing > compromises on braking performance, or brake feel, or brake equipment > choices or brake setup choices or some/all of the above. If you want me to > comment on your two bikes, I'd be happy to look at your photos and run the > numbers. Basically, you'd want to start with a bike that was built wrong > (in the right way). > > Don't confuse my comment with a general statement about 27" to 700c > conversions. For centerpull and sidepull brakes, I think it's usually > straightforward and usually awesome. > > Bill > > On Wednesday, August 22, 2018 at 2:07:10 PM UTC-7, Paul Clifton wrote: > >> Hey Bill, >> >> What are the compromises converting 27 to 700? >> I've never had a problem with it, and I can fit fatter tires, but I've >> only done it to a couple bikes. >> >> Paul in ATL >> >> On Wednesday, August 22, 2018 at 2:15:45 PM UTC-4, Bill Lindsay wrote: >>> >>> I have no specific thoughts about the 980 suitability for a 630 to 622 >>> conversion. My general thoughts are that 630 to 622 conversions with >>> cantilever brakes are always massively compromised, and I'd personally >>> never bother with such a project. If I was helping a friend who was >>> dead-set on such a project, I would use vintage style brakes that use post >>> style brake pads. Like from my parts box I have some vintage Shimanos that >>> I'd try. >>> >>> Bill >>> >>> On Wednesday, August 22, 2018 at 10:50:33 AM UTC-7, John G. wrote: >>> >>>> Any thoughts on the vertical adjustability of the pads? Wondering if >>>> they’d suit a 27inch to 700c conversion. I guess Canti post spacing is >>>> also >>>> an issue that is have to consider. >>> >>> -- 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.
