Triumphrat

This may be a stupid question, but it is new to me.
I have put new rear brake pads on my Trophy and on the test run they were running quite hot. How hot I am not totally sure because funnily enough I have not touched the rotors before, but hotter than the front rotors and on the second run I did not use the rear brake only the front and they felt about the same temp.
Is this normal during the run in phase?
Also I was a little late noticing the rear needed changing and am not sure if the rotor is damaged (hope it isn't) would that affect the temperature?
The brake pads are EDC.
Guess I need to start paying more attention.
Thanks
Jason.

Timtiger

Modern disk brakes get hot in normal use - very hot. With a bit of spirited riding, they can get hot enough to burn your hand - ie more tha 100oC. Every seen the Brembo add where the disk is glowing red hot?
I don't think this is really worse during the new pad run in as it simply related to the fact that friction generated heat and friction is how brakes work.

Just a point. If your brakes are very hot after a fang with heavy braking, do not wet them! This can cause disk warping and juddering brakes. They only take a few minutes to cool. Quite a few Tiger owners have reported this problem and the rotors are generally replaced under warranty - if the bike is in warranty.

Jhumphrey

JP,
I had a similar problem when I changed the rear pads on my '99 Trophy 1200, the first time. The heating went away after about 250 to 300 miles (the pads wore in sufficently to not contact the disk). The second set of pads I put on, I cleaned and lubricated the pistons before fully compressing the pistons into the calipers, I used a liberal amount of copperslip grease on the back sides of the pads and pins. After remounting, I pumped the pedal a couple of times till the brakes held good then drove as normal. No heating issues.

HOpe this helps good luck. Keep us informed.

Thanks for the input. I will monitor the heat situation and if it stays hot I will go back and clean everything (which I should probably have done anyway).
I did read somewhere on another site where somebody had there rotor turn blue, so that is why I have some concern.
I will let you know what happens.

Jason.

[ This message was edited by: jpproperty on 2005-04-15 07:11 ]

Timtiger

I had assumed that you had checked the pads were coming off the disk when the braked are released. Yoyu can check this by lifting the rear wheel and spinning it. There should be a very small gap between the pads and the disk rotor.
The Triumphs tend to use fixed disks with floating calipers. If the pins the calipers slide on are gunked up, the pad my rub on the disk when the brakes are off. You will see rapid and uneven pad wear and het disks, even if you have not used the brakes. Ypu could get a can of brake cleaner and clean them, but iyt is beat to pull the calipers and mounts off, clean them properly and put copperslip on the caliper pins. Clean the caliper pistons also to ensure they retract fully. Use the correct leaner or you can damage the seals, and that is BAD.

Good luck.