David, If it were me, and it's not, but if it were...I wouldn't worry about it too much. Rims wear much more when things are wet, on-road or off. I clean and check the rims/brakes after riding in the wet to get out all the stuff embedded in the brake pads.
I have a Sun Rhino-Lite rim on a MTB that looks much worse...it looks like it is about to wear through the sidewall of the rim. They guys I ride MTBs insisted it would fail at "any time"...several years later it looks even worse and continues to function. Perhaps I have a dream of wearing completely through the sidewall of a rim.... Angus On Aug 15, 5:46 pm, "carnerda...@bellsouth.net" <carnerda...@bellsouth.net> wrote: > First, thanks to all who have shared their experience, observations and > advice. > Here are the brake > pads:http://www.flickr.com/photos/carner/4892840374/http://www.flickr.com/photos/carner/4892244553/ > I removed the tire and rim tape and closely inspected the rim. I saw no > signs of even tiny cracks, inside or out. I put the rim on my very > basic Minoura Workman Pro truing stand. Best I can tell the rim is > true to less than a mm. radially and laterally. I could not detect any > irregularities of the braking surface. Specifically, I could not find > any area where the rim was "fatter" than it should be.The scoring was > bad enough that I used a maroon abrasive pad to smooth off the worst > high spots, replaced tire, remounted with the same pads (after cleaning) > and today got in a short test ride. The braking is very smooth, too > smooth in fact. Even the original little "tick" is gone, but there is > some loss of stopping power, I assume from my sanding. I plan to do the > burnishing thing before replacing the tire, although I am a little vague > on exactly how that is done. "Instructables" has instructions on using > a home made stone made out of slate for burnishing anodized rims, but I > don't have any slate available. > As I mentioned in the original post, I have had several rides lately on > mostly gravel roads. On one of those, the roads were wet. The damage > was apparently done by getting sand and small stones stuck in the pads. > I guess I do need to be more careful about cleaning the pads after a > ride in those conditions. Also, have been planning to get the Yokozuna > cartridge shoes and pads from RBW. The last time I placed an order they > were out of stock, but I see they are back. Does anyone have experience > with these or have another recommendation? From looking at the pictures > they have the cross grooves similar to the Shimano pads. > I am also trying to decide if all this trouble is a definite sign that I > should replace the front V-brake with a Paul Neo-Retro :-) . > David > > EricP wrote: > > Will agree with Tim, that the o/p should check his brake pads. > > However, will also agree with David Craig and suggest the person also > > pull the tire, tube and rim strip and make sure there are no cracks in > > the rim with that wear. Had two Velocity rims crack internally, so am > > more paranoid about them > > > However, as that seems to be all the way around the rim, would think > > it's more an issue of the pads. > > > Eric Platt > > St. Paul, MN > > > On Aug 14, 11:14 am, Tim McNamara <tim...@bitstream.net> wrote: > > >> On Aug 14, 2010, at 6:00 AM, Angus wrote: > > >>> I have had rims, in the past, wear unevenly next to the spokes. > > >> Yes, this should be clarified. The spoke tension causes a tiny > >> amount of bulging in the rim wall by each spoke which is why it wears > >> more there. This tends to be evident only on rims with anodized > >> sidewalls and/or where the brake pads are especially abrasive for > >> some reason. Back in the bad old days of dark "hard" anodized rims > >> there was a spate of really ugly wheels out there. This was solved > >> by machining down the sidewalls, which not only improved the > >> aesthetics but also improved braking; anodizing is a bad brake > >> surface for several reasons. > > >> In the photos, the scoring looks unusually bad for a rim with this > >> few miles on it. That's why I suggested looking at the braking > >> surface of the pads to see what's stuck in there. Some pad materials > >> are more prone than others to picking up flecks of aluminum from the > >> rim which becomes a nice abrasive. Or pads with gaps and voids in > >> them can pick up small pieces of rock, etc. I have found that some > >> Shimano pad materials seem especially abrasive. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
