Chargeride
Well-Known Member
Yeah, my swingarm mounted rear fender increased rear hub whine by 50%.
clanking brakes
- Thread starter spokewrench
- Start date
Chargeride
Well-Known Member
Well I fitted the cheap rotor and the juddering has gone, at first there was weird pulsing, but that stopped after a bit.
Not bad and you know I wont be replacing it
Not bad and you know I wont be replacing it
PCeBiker
Well-Known Member
- Region
- Canada
Well I fitted the cheap rotor and the juddering has gone, at first there was weird pulsing, but that stopped after a bit.
Not bad and you know I wont be replacing it
A was looking at replacement rotors for my e-bike on Amazon and the off brand version was less than ⅓ the price,..
I'm just going to get the cheap ones if I get new ones.
I've got no hills to deal with so they aren't used very much.
I hardly ever even hold on to the handlebars.
I've always been a big fan of "Good Enough".
I have little need for perfection.
spokewrench
Active Member
- Region
- USA
I think I'll use wet sandpaper with a little dish liquid. The invisible stuff might tend to clog sandpaper or re-adhere to the disc. It's so much better after the second wash that first I'll ride a few days to see if it goes away completely.
What's this? A 1/8" R-clip for brake pads? I'll bet it would also hold a playing card to hit the spokes so folks will think I'm on a smokeless Vespa!
spokewrench
Active Member
- Region
- USA
I took the disc off and washed it with 400 grit sandpaper and a tub of water and dish liquid. When I got it pretty well bedded, I noted a mild judder around 14 mph, the same as before the sandpaper wash. This time, after further braking, the judder was gone.
In my case, I think the underlying cause of juddering was softening of resin pads due to moisture from humid air. Bedding generates heat to deposit pad material on the disc. The combination of speed and pressure that would deposit the right amount from dry resin pads could deposit too much on initial impact with pads softened by humidity.
I think caliper hardware has enough spring for bouncing that's too small to see but can affect pad pressure. I think hard, fast braking with soft pads can cause enough bounce to space dabs of thicker pad material evenly around the disc. I think I experienced juddering at a certain speed range because the caliper was hitting high spots at its resonant frequency.
After the slight judder appeared during bedding, I rode normally with gentler braking. At the same time, the warmed-up pads were getting drier. I think gentler braking with drier pads smoothed the high spots so that subsequent hard, fast test braking produced no judder.
In my case, I think the underlying cause of juddering was softening of resin pads due to moisture from humid air. Bedding generates heat to deposit pad material on the disc. The combination of speed and pressure that would deposit the right amount from dry resin pads could deposit too much on initial impact with pads softened by humidity.
I think caliper hardware has enough spring for bouncing that's too small to see but can affect pad pressure. I think hard, fast braking with soft pads can cause enough bounce to space dabs of thicker pad material evenly around the disc. I think I experienced juddering at a certain speed range because the caliper was hitting high spots at its resonant frequency.
After the slight judder appeared during bedding, I rode normally with gentler braking. At the same time, the warmed-up pads were getting drier. I think gentler braking with drier pads smoothed the high spots so that subsequent hard, fast test braking produced no judder.
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