Unknown brake noise

Darron1117

Supercharged
Joined
Sep 4, 2019
Messages
226
Location
Houston, Texas
Ride
2012 Triumph Rocket III Roadster
Hello Rocketeers,
Changed out my rear brake pads today and everything seemed to go fine. Pads went in with no
problem and was very easy to do. Once I finished, I sat on the bike and rolled it a bit and hit the
rear brake and it felt like it always did and seemed fine. When I applied the rear brake I hear a single
tap that sounds like hitting a door or a wall with a single knuckle. Not loud, but is heard. If I push the
backwards and apply rear it does it too. Haven't ridden it yet. Didn't do this before changing the pads.
Did I jack up something?
Thanks in advance.
 
It could be the disc 'floating' back and forth on the buttons that lock it to the carrier
 
mr hunt said:
It could be the disc 'floating' back and forth on the buttons that lock it to the carrier
Click to expand...

Hmm the rear brake disc is fixed, and the calipers floats (front brakes are the opposite). But the noise could indeed come from caliper movement.

@Darron1117 have you eyeballed the brake caliper & pads while pressing the pedal, to see if you can spot what causes the noise?
Take a pic or better still a video for us too.
 

He only mentioned rear brake twice....how am I supposed properly comprehend the question
 
It only makes the noise if the bike is rolling. No sound at all if I apply rear brake sitting still.
 
I will take photos. There's no play at all. Caliper is solid. The inside pad wiggles just a little bit.
 
Darron1117 said:
It only makes the noise if the bike is rolling. No sound at all if I apply rear brake sitting still.
Click to expand...

That would indicate that the noise is from circumferential or radial movement (e.g. torque reaction bolt) rather than axial.. but there are too many factors to jump to that conclusion.
A good video will greatly help
 
Try... remove the pads, loosen everything. Exercise the pedal and expose some of the pistons. Are the pistons clean? If you have never done a deep clean of the caliper and pistons, this is a good time. Clean well with a tooth brush, brake fluid and brake cleaner. Simple Green and flush with water well. Use gloves. That brake cleaner looks carcinogenic. Do not contaminate the disc or pads. Seat pistons as far as they will go, reinsert the pads. Apply pressure to the pedal so that the pads grab the disc. Apply final torque while the pads hold the disc. Roll the bike. If it's still doing it, lift the bike and try rolling the tyre. If that don't do it, I have no idea what it could be.
 
Thanks, will do. A little cold in the city, today.
 
You must log in or register to reply here.

Similar threads

Unknown part found under the seat
Replies
4
Views
308
acim
valve noise
Replies
8
Views
637
Rocket Scientist
Valve noise below 1700 RPM, what can cause this?
Replies
7
Views
475
warp9.9
Clutch "noise"
Replies
5
Views
604
Rocket Scientist
DOT 4 the right brake fluid???
2
Replies
12
Views
988
Old N' Grumpy
Menu
Log in
Register