Am experimenting with some new pads, initially just swapping Swissstop Green for EBC red so probably no need to sand rotors, but I've also got some Ceramic pads I might want to try so out of good experimental method I figured I should taje dome wet and dry to them.
I bought some wet and dry pads for my oscillating multi-tool which promptly died, and the only wet and dry attachments for a Dremmel appear to ship from China 🙄
So do I shell out for a new sander/multi-tool, or is there some cunning way to fashion an attachment for a drill?
D'oh, ignore, realised I hadn't actually googled 'sanding attachment for drill'. Available from virtually all DIY stores for approx £2.57 😁
Buy sand paper fold round disk rub vigarously
Introducing power tools is just shortening your disks usuable life span
Hmm, the mileage and amount of braking I do, rotor lifespan won't be an issue!
Never thought hand sanding achieved much other than shredded sandpaper and finger tips 😁
You don't need much effort to sand a disc. Why are you using a power tool.
I just didn't think fingertip pressure would be enough to remove the baked in/ingrained remains of the previous pad compound. Figured I could get a more even/consistent result using a drill, it's not like I'll be putting my body weight behind it...
Just clean it with Acetone or Isopropyl Alcohol. Don't need to overthink it
I just didn’t think fingertip pressure would be enough to remove the baked in/ingrained remains of the previous pad compound.
You really are overthinking this. Just fit your new pads, leave the rotors alone, bed them in by doing a big descent. Any old pad material on the rotors will be burned off by the time the new pads bed in.
Or, just sand the rotors and bed them in. End result will be exactly the same. Powertools are not needed for this job.
What thols2 said.
I've never felt the need to sand a rotor.
Huh, OK, I genuinely thought it was the standard advice, am sure pad manufacturers recommend it and thought it was part of that Pinkbike article about bedding in new pads etc. especially when changing compounds.
What thols2 said.
I’ve never felt the need to sand a rotor.
Would you accept some people do 😕 🙂
i dont thing hand sanding does a good job, even with a block of wood, particularly on the inside.
The paper gets torn too easily.
I got an old flap disc off a grinder, and put it on a sanding pad attachment on the drill.
Its easy to put it on slow and get the pressure and places and angles you need
You dont need to chew it up
Would you accept some people do 😕 🙂
Yes.
Don’t need to overthink it
New to 13fm disk threads then?
New to 13fm disk threads then?
😂😂
Is legitimate, if I'm going to experiment with every known combo of disc and pad known to man then I need to be methodical about it!
It's easy to get uneven results with power sanding, in general, not specifically on discs. Cloth backed (emery) is better than paper backed for use on metal, although wet & dry used wet isn't bad. On a disc, leave it on the wheel and leave the wheel on the bike, just take the pads out. Wrap it round a block of wood, spin the wheel and hold the block against the disc.
I've never done it. I can see why it could be a good idea with really dissimilar pads though... Any time I've wanted to clean one up- usually just surface corrosion or it's got dirty in storage- I've used a scotchbrite pad but if I'm honest I probably have a bit of an unhealthy scotchbrite pad fixation
I probably have a bit of an unhealthy scotchbrite pad fixation
Had a great selection of grades of scotchbrite in my old job, heady days indeed.
Leave the rotor on wheel, wheel on bike, hold sand paper around rotor, spin wheel.
You aren't thinking about this. Take some sandpaper out with you when riding. When you want to swap pads, take the wheel out and wrap the brake pistons in sandpaper. Then do a load of stoppies. You'll soon be ready for new pads.
I use one of these with brown or green pads.
jkomo
Full Member
Leave the rotor on wheel, wheel on bike, hold sand paper around rotor, spin wheel.
Don't put your finger through the disc when it's spinning
I had a set of disks that wouldn’t stop screaming at me! Clean, go at it with one of those little palm sanders and then clean again. Do the same with the pads as well. It took long enough to get the dark layer off so I would overly worry about over sanding them.