Replaced wheel, hot rear rotor?

[bo7o]

I took off rear wheel to replace bald tire (separate story, let it go waay too long)

Any I put on the PR3 myself and remounted the tire. First time for both, so I'm nervously checking everything. I noticed the rear rotor was fairly hot after a very short ride. The wheel spins fairly easily in neutral, no hint of brakes there, and I didn't see anything weird as I span. Is it something to worry about? Or did it just get hot early on as things settled back??

Thanks !!

Rob

 

[670cc]

The main thing is to be certain the caliber bracket is engaged in the slot on the swingarm so the caliper can't rotate. Several people have missed that during assembly. Make sure the axle spacers are all in the right place. Other than that, brakes got hot when used, so it could be normal.

 

[bo7o]

Hi - yes the caliper seems fine.
Maybe I'll just have to do another test run and do very little braking with the rear and make sure it is cool

Edit: took her out for another ride and brakes were cool, I guess they just heat up more than I realized and I was being paranoid.

 

[BerndM]

Even when NOT applying the brakes, the pads still lightly rub the rotors, causing a continuous bit of heat. Using the brakes just ONE time will GREATLY increase the temp, but it dissipates quickly as soon as you let off.
Try this: Just firmly rub your palms together quickly for 10 seconds and see how warm your hands get. The pressure you are exerting on your hands is inconsequential compared to the pressure your brakes apply.

 

[ST13Fred]

It doesn't take much pedal pressure to put a lot of heat into the rear rotor.

What I do is use only front brake for a period of time before stopping the bike; the rear rotor should be relatively cool, maybe warm, but certainly not hot.
The ST13 is notorious for dragging rear rotor, (I have my own reasoning for this). Keeping the pins lubed and pistons clean usually keeps the pads off the rotor when not in use.

 

[Old Can Ride]

It doesn't take much pedal pressure to put a lot of heat into the rear rotor.

Next time you are out ridding squirt a little water on either rotor when you get off the bike. The water will instantly turn to vapor.

Here are a few numbers to help you understand the numbers.

https://www.chem.purdue.edu/gchelp/liquids/critical.html

Good rule of thumb, never ever never put your thumb on a rotor!

 

[showkey]

http://www.scottjones.net/wp-content/uploads/2011/03/T2P8541.jpg

 

[kharli]

My nc700 brakes need a good strip down and clean every 5k or so miles as they get really grimy and sticky here in salty muddy wintry scotland

 

[HONDABIKEPRO]

It doesn't take much pedal pressure to put a lot of heat into the rear rotor.

What I do is use only front brake for a period of time before stopping the bike; the rear rotor should be relatively cool, maybe warm, but certainly not hot.
The ST13 is notorious for dragging rear rotor, (I have my own reasoning for this). Keeping the pins lubed and pistons clean usually keeps the pads off the rotor when not in use.

Make sure the secondary master is not hanging up on your st1300, this is what normally happens, and destroys the rotor and pads. Dale