Bought a NOS Shimano Cantilever Set with brake pads, unfortunately the pads were not made for aluminum rims, what material are they supposed to fit?
how bad are the rims damaged? just drove a few meters still there are some dents in them. Can I repair them or do they flatten out by themselves using aluminum rim brake pads?
by H20neun
10 Comments
Oh my… is that the metal rubber retaining pin just scraping into the brake surface?!?
Are the new old pads hard?
You dont have dents, you have burs in the rim prob from the dirt/grit stuck in the pad.
1)Get a pic and pic out the burs. No big deal.
2)Hold some 150 sand paper on the rim and rotate wheel. Wipe off with alcohol.
Done this on many tune ups.
Then get softer pads.
Just putting this out there, I always chuck the factory shimano pads and install kool stop pads. Original Shimano
pads are too hard.
It looks like a sliver of metal is stuck in the pad. Pick it out, or better yet, get the Kool Stop salmon inserts instead. The rim is fine. I’d also like to add: a rim brake rim is a consumable part. Expect wear on the braking track. Expect to eventually replace the rim. It’s not going to remain a perfect surface.
Honestly that looks pretty normal to me just wait until you ride in the wet!
The only other pads you could possibly have picked up are for carbon rims which are softer (these aren’t those)
Rim brakes are notorious for this… I’d pick the swarf out the pads and move on.
Should probably pick the bits of debris off the rim too.
Going to assume steel depending on how old stock we’re talking.
Looks like the screw retaining the pad is way too long, if it’s protruding from the braking side
There are a few things happening here:
1) When wheels are made they are made from flat stock, so they’re “rolled” into round, the process of making the wheel then leaves machining marks creating the grooves you see on the rims braking surface also known as a brake track. When this isn’t cleaned up (groves ground down to a uniform braking surface) then it’s usually an indication of a cheaper wheel because it’s left unfinished. This, the grooves, can then slough off metal onto your bake pads, it will also give the appearance of debris left by your pads into the rim. https://www.rivbike.com/pages/rims?srsltid=AfmBOoqC9L8Hc-yG3BbJC5NEx-0e8Bcno_9SnGuoqq_NUMPolbBnq-zd2)
2) The black mark you see on the brake track is the wear indicator, when that line that feels like a groove, becomes level with the rest of the braking surface of the brake track then its time to replace the wheel or have the rim replaced.
3) Pick out the piece of metal from the pad, if it’s not removable then it’s a pin that holds the pad together, replace pads with an aftermarket pad that a local bike shop recommends for your application. Ensure that the pads are installed correctly so you have proper stopping power as well as brake track wear and pad wear is even.
Eagle 2 or the mtn pads both are great choices from KoolStop
The rubber looks like it’s good for steel rims to me.