This is not good, and its my fault

[Stefan Mikes]

Seriously on brakes
I installed new race pads but I don't have the tool to align the caliper.
Now the rear brake is dragging wearing down my rotor. I will buy the tool if I know what it is called.

Rome, you need no tool.

I assume you installed the new pads properly.

First of all, I think you have squeezed the brake lever when the wheel was off the bike. Remove the wheel again. Take a tire lever, insert it between the brake pads, and move the lever the way to push the brake pistons back into their proper idle position. It should leave a gap between the brake pads significantly wider than the thickness of the brake rotor.

Replace the wheel. Using a hex wrench, loosen two bolts that hold the brake calibers onto the frame (loosen but do not remove them). Now, squeeze the respective brake lever strongly and fasten the caliper bolts. Release the brake lever.

Hydraulic brake calipers are self-centering.

 

[Slaphappygamer]

If you need to straighten out your rotor, use this…

A wobbly rotor could also be at fault.

 

[Stefan Mikes]

A wobbly rotor could also be at fault.

It could happen to your e-bike Not to Rome's!
Proper brake rotors never get bent.

 

[PDoz]

It could happen to your e-bike Not to Rome's!
Proper brake rotors never get bent.

I'd love to know where to find these mystical objects.

ALL brake rotors will warp if you rapidly heat then cool them. Try a 500 m black descent followed by a few creek crossings on a hot day.

 

[Gionnirocket]

I'd love to know where to find these mystical objects.

ALL brake rotors will warp if you rapidly heat then cool them. Try a 500 m black descent followed by a few creek crossings on a hot day.

 

[fooferdoggie]

they can warp but they usually straighten back out when it cools. we see this on the tandem a lot. though since going to e bikes I have not had a rotor really warp and stay warped years ago like I used to have on mechanical brakes.

 

[PCeBiker]

My brother-in-law got an e-bike delivered in a box that was all smashed up.
The front brake rotor was bent.

He just bent it back.

@Rome ,.. install your wheel and spin it and watch (and listen to) the brake disk rotate through the brake pads.

A warped disk is easy to see and hear.

 

[Stefan Mikes]

I'd love to know where to find these mystical objects.

ALL brake rotors will warp if you rapidly heat then cool them. Try a 500 m black descent followed by a few creek crossings on a hot day.

Most of us do not put our e-bikes to the extremes. And I do not think Rome does a "500 m black descent followed by a few creek crossings on a hot day". I do not think he was able to hit his brake rotor to actually bend it, either.

I did many high mountain long descents, and I actually know you can burn your fingers if you accidentally touch the rotor after stopping but no brake rotor of mine has ever got warped.

What I explained to Romeo were the basics of the hydraulic brake caliper maintenance.

 

[Chargeride]

My brother-in-law got an e-bike delivered in a box that was all smashed up.
The front brake rotor was bent.

He just bent it back.

@Rome ,.. install your wheel and spin it and watch (and listen to) the brake disk rotate through the brake pads.

A warped disk is easy to see and hear.


View attachment 170998

Rotors can be hard to straighten once bent, you can spend hours bending them this way and that only to end up with kinks that keep your pads spread and wearing down when not in use.

Of course my idea of bent is hitting a rock and about an inch out of true

 

[PCeBiker]

Rotors can be hard to straighten once bent,..

Rotors can be easily straightened if you have the right tools,..

Fire and MAP gas helps too,..

 

[PDoz]

Rotors can be easily straightened if you have the right tools,..


View attachment 171044

Fire and MAP gas helps too,..

View attachment 171045

I have a much more compact rotor straightening tool, it's a thin piece of platinum coloured plastic, about $40 each time I use it

 

[Gionnirocket]

Rotors are straight. I text my Bulls tech
How to align/reset to factory specs. My calipers. He said to loosen caliper bolts and stick .5mm spacer on 2 side sandwich the rotor hold brake lever for 5 seconds. Tourqe bolts when you satisfied with tightness. Release brake pressure .
There you have that's how I set both my bike.

Basically what you were told.
I've found the 0.05mm spacers to not be totally unnecessary and be a pain in the ass.
But whatever makes you happy.

 

[Gionnirocket]

Rotors can be easily straightened if you have the right tools,..


View attachment 171044

Fire and MAP gas helps too,..

Looks like the tools the Bafang tech told @Rome to use to install a controller.

 

[PCeBiker]

Not sure if I used the word ductile correctly.

I found duck tile on ebay,..
They've got your classic yellow rubber duck tiles,..

The stealth, incognito black duck version,..

And the complete duck tile mural to do your entire bathroom,..

And a Cool Ernie Reggae Rubber Duck Song,..

 

[PCeBiker]

I wake and baked this morning. Getting ready to start the day.

You should start your day with a Duck Bong,..

Having the little rubber ducky bobbing around in its little duck pond inside the duck bong will surely put a smile ☺ on your face.

Best way to start the morning.

 

[fooferdoggie]

dynaplugs are permanent

Amazon.com

 

[Slaphappygamer]

You don’t even have to submerge the tire. Another way is to get that soapy water and a brush. A paint brush will work well. “Paint” the soapy water around the suspected areas and you’ll see bubbles form where the hole is. I think you can actually see the hole better because the tire is not submerged in a bucket of water.

 

[Gionnirocket]

Soap in a spray bottle is even easier though submerged finds it fast if you are totally lost on its location

 

[teskow]

I test for leaks in the pool of laundry tub that way if it is leaking around a spoke or the valve steam it is a quick find.

 

[Chargeride]

I've found a fix for the hub that's good enough for me, all the screws have gone in well, and it feels completely secure.