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Old February 21st, 2018, 12:55 AM   #1
Darksik
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Rear Brake makes a pop sound

To tell my problem fast i feel like my rear brake isnt functioning properly.
The rear brake makes a weird noise sometimes when im braking as well, kind of like a popping sound of some sort whenever im braking using the rear brake.
Before that pop only sounds when i was driving in any speed and when i use the rear brake to stop.
But now when im driving in a speed range of 10 - 30km/h it hears the popping sound, and when i brake with the rear brake the popping sound doesn't hear anymore, now sounds when im driving slow, somebody can help me?

I read in another forum, that the problem was "the caliper mount bracket wasnt inserted in the swingarm indentation at all."

I tried to upload a video recorded with my Action Camera so you guys can hear that noise

https://www.youtube.com/watch?v=DP9D5y9gc4o

PS: Turn up your volume to 100% to hear the pop that start from the 0:18

Last futzed with by Darksik; February 21st, 2018 at 02:36 AM.
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Old February 21st, 2018, 07:04 AM   #2
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Has the rear wheel been off? How many miles on the bike? Could the pads be worn out?

Look at this post to confirm that the caliper is mounted correctly - https://www.ninjette.org/forums/showthread.php?t=294711

And this link - https://faq.ninja250.org/wiki/My_bra...ating_normally

Look closely at the condition of the brake rotor. It sounds like the clicking happens with every rotation of the rotor.

I would get the rear wheel up in the air and spin it. Listen for the clicking. Have a fiend apply the brake slightly as you are spinning the wheel.

If you are using the rear brake a lot, I would learn to use the front more. In any situation where speed is involved the rear isn't going to give you any significant amount of stopping power.
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Old February 21st, 2018, 07:29 AM   #3
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Old February 21st, 2018, 07:57 AM   #4
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My brother just destroyed brand new rear tyre by locking it up in panic stop when truck pulled out of side street. With harder front-brake usage, he would have stopped quicker and been safer in that scenario.

My rear pads outlive my front pads 10:1 easily.

Anyway, sounds like they’ve got you covered. Rear caliper bracket not slid onto rear swingarm properly. I find it’s much, much easier to get rear wheel installed by zip-tying rear caliper bracket in place first. Position bracket slot on swing arm and position hole in-line with chain-adjuster hole in-line with swingarm hole, then tighten zip-tie. Then when you install rear wheel, you don’t have to worry about caliper bracket getting bumped out of position.
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Old February 21st, 2018, 08:15 AM   #5
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Quote:
Originally Posted by JacRyann View Post
My rear pads outlive my front pads 10:1 easily.
I've never worn out pads or shoes on any motorcycle's rear brake, but when I buy a used motorcycle, the rear pads often are thin and need replacement. When I got my 250, the rear pads were shot, but the front ones were like new.
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Old February 21st, 2018, 09:56 AM   #6
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Darksik, please post photo of your rear brake. Thanks.
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Old February 21st, 2018, 02:10 PM   #7
Darksik
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Quote:
Originally Posted by jkv45 View Post
Has the rear wheel been off? How many miles on the bike? Could the pads be worn out?

Look at this post to confirm that the caliper is mounted correctly - https://www.ninjette.org/forums/showthread.php?t=294711

And this link - https://faq.ninja250.org/wiki/My_bra...ating_normally

Look closely at the condition of the brake rotor. It sounds like the clicking happens with every rotation of the rotor.

I would get the rear wheel up in the air and spin it. Listen for the clicking. Have a fiend apply the brake slightly as you are spinning the wheel.

If you are using the rear brake a lot, I would learn to use the front more. In any situation where speed is involved the rear isn't going to give you any significant amount of stopping power.

Only remove the wheel when i change the tires by a new ones

the brake rotor is good but one time my brother send the rotor to rectify because some "mechanic" told that
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Old February 21st, 2018, 02:12 PM   #8
Darksik
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Quote:
Originally Posted by JacRyann View Post
Anyway, sounds like they’ve got you covered. Rear caliper bracket not slid onto rear swingarm properly.
I also think that because the rear caliper moves a little when i push and it's supposed to be tight.
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Old February 21st, 2018, 02:28 PM   #9
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Originally Posted by darksik View Post
i also think that because the rear caliper moves a little when i push and it's supposed to be tight.
there could be a little wiggle but not much, how much movement is there exactly is it measurable, it should be so little of movement that it is not worth measuring, 2mm most
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Old February 21st, 2018, 03:22 PM   #10
Darksik
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Quote:
Originally Posted by JacRyann View Post
Darksik, please post photo of your rear brake. Thanks.
Here it is



Another view of the caliper





A bolt went here inside, is any problem if i run the bike with a bolt inside that tube where you adjust the chain?

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Old February 21st, 2018, 03:30 PM   #11
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I think that rotor may be toast.

It looks like there is some uneven wear, gouges, and it may be warped.
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Old February 21st, 2018, 03:38 PM   #12
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Quote:
Originally Posted by Darksik View Post
A bolt went here inside, is any problem if i run the bike with a bolt inside that tube where you adjust the chain?
Loose bolt is problem. Can get stuck in rotor holes or chain and cause big problems. Remove rear-wheel, remove engine, disassemble entire bike, whatever is needed to remove that bolt!
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Old February 21st, 2018, 04:15 PM   #13
Darksik
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Loose bolt is problem. Can get stuck in rotor holes or chain and cause big problems. Remove rear-wheel, remove engine, disassemble entire bike, whatever is needed to remove that bolt!
I mean one like this went inside on the side where is the exhaust



Can i open the that lid even if the bike is in the floor? could i try loosen up a little the locknut (C) and the adjuster nut (D)?

[IMG]
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Old February 22nd, 2018, 10:53 PM   #14
Darksik
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*UPDATE

I found the screwdriver allen bit, is inside the tyre, when i spin the well i hear the tip is spining inside, can i move the bike in slow speed?, because the mechanic is 20km of distance
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Old February 23rd, 2018, 07:23 AM   #15
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I would not worry about riding the motorcycle that far. The screwdriver bit will not move around much once you're going fast. It will only tumble around when you're going slow.

I assume if it got into the tire, it happened when the tire was deflated and the tire bead was not seated on the rim, leaving a gap.
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