Rear brake issue

Squeaky back brake? Hard to control at 30mph/40kph?
Mieju1
125cc
125cc
Posts: 11
Joined: Sun Apr 23, 2017 9:45 am
Country: Finland
City: Helsinki
Year: 2010
Model: SMT

Rear brake issue

Postby Mieju1 » Wed Jun 07, 2017 8:42 am

Hi,
There seems to be many discussions regarding rear brake problems...however I didn't find any dealing with the issue I currently have. I get this funny jerking from the rear brake and even the leaver is pumping up and down under heavier braking. When I first apply the break it's all good, but a few seconds later it starts jerking....I've changed new quality pads and the disc seems straight and evenly worn. Also the caliber seems to be "floating" ok. I haven't yet changed the fluids. Any similar experiences/tips how to fix it?

Rockbyter
125cc
125cc
Posts: 29
Joined: Fri Mar 24, 2017 2:40 pm
Country: England
City: Durham
Year: 2017
Model: Adventure

Re: Rear brake issue

Postby Rockbyter » Wed Jun 07, 2017 5:54 pm

Could it be the ABS?

Mieju1
125cc
125cc
Posts: 11
Joined: Sun Apr 23, 2017 9:45 am
Country: Finland
City: Helsinki
Year: 2010
Model: SMT

Re: Rear brake issue

Postby Mieju1 » Wed Jun 07, 2017 8:07 pm

Rockbyter wrote:Could it be the ABS?

Mine doesn't have abs, it's the 2010 model....next I'll bleed the system to see if it helps.

Magic Wand
Supporter
Supporter
Posts: 285
Joined: Mon Jun 08, 2015 8:40 am
Country: Sweden
City: Sthlm
Year: 2010
Model: SMT

Re: Rear brake issue

Postby Magic Wand » Wed Jun 07, 2017 8:57 pm

Are you sure the brake disc isn´t "warped"?

Spin the wheel and just Slightly apply light force to the brake lever, and maybe you will notice the pads touching the disc.

But on the other hand, sometimes the pads seems to touch the brake disc when I pushing my bike around at the parking lot, or similar, but i don´t feel anything strange when driving. No hot disc, no pulsing in the brake lever either.

Clean the caliper and every part you can reach, thoroughly, with Brake cleaner or similar.

/M

Thirdway
990cc
990cc
Posts: 710
Joined: Sat Apr 19, 2014 7:45 pm
Country: UK
City: Darlington
Year: 2012
Colour: White
Model: SMT

Re: Rear brake issue

Postby Thirdway » Sun Jun 11, 2017 10:43 pm

Might be a knackered master cylinder piston seal allowing pressure the release as the fluid warms up.


Return to “Teething problems”

Who is online

Users browsing this forum: No registered users and 2 guests