Author Topic: Rear brake ? Floating?  (Read 2793 times)

0 Members and 1 Guest are viewing this topic.

Offline bob larry

  • Full Member
  • ***
  • Posts: 150
Rear brake ? Floating?
« on: December 03, 2009, 03:41:21 AM »
Is the rear brake free floating or should it be attached?  Mine looks like something is missing..

When ever I reverse the bike off the truck the brake goes with and the hose gets it good.

2001 KX500

Offline KXcam22

  • Hero Member
  • *****
  • Posts: 1,677
Re: Rear brake ? Floating?
« Reply #1 on: December 03, 2009, 05:20:29 AM »
The rear brake is attached to a slot on the inside of the swingarm.  Full floating rear brakes went out of vogue years ago with the intro of disc brakes.  In the drum brake world it was often used to keep the dimesional relationship of the brake components equal (parallelogram) to improve braking consistency - but I neve noticed a difference.  Strange but my sons 2008 Kona Stinky mountain bike has a linkage to make the rear brake caliper full floating.  Cam.

Offline hughes

  • Hero Member
  • *****
  • Posts: 1,923
    • Dirt Hammers
Re: Rear brake ? Floating?
« Reply #2 on: December 03, 2009, 06:16:37 AM »
The caliper slides/floats on two pins.
Open Class 2-Stroke Kawasaki KX500
Yamaha 2005 YZ250
Richard Hughes
Dirt Hammers - Online Off-Road Journal
hughes@dirthammers.com
http://www.dirthammers.com

Offline bob larry

  • Full Member
  • ***
  • Posts: 150
Re: Rear brake ? Floating?
« Reply #3 on: December 04, 2009, 05:13:08 AM »
Unless I put a tie strap around the swing arm and brake line, when ever I put it in reverse(lol) the brake goes with the tire and pulls the line pretty good.
Maybe the pads are just sticking to the disc from dirt ?  Shouldn't be so ? 
2001 KX500

Offline Friar-Tuck

  • Hero Member
  • *****
  • Posts: 1,827
  • \o/ Live Free or Die
Re: Rear brake ? Floating?
« Reply #4 on: December 04, 2009, 05:50:28 AM »
  Bob,
 There is a small piece of aluminum that resembles an "I" beam attached to the swingarm.
    The caliper slides  on it and then the axle slides through the other end of the caliper mounting . (see cam 22 post above)
  I think you may have mis-understood the term "Full Floating".
    I by no means am an expert, so please don't take this the wrong way.
  This is kind of important as you may lose your ability to use the rear brake... or worse.

 If I understand your situation correctly, go out and look at your rear brake caliper.  One end mounts to the axle itself.   Now grab the caliper and rock it towards the rear of the bike.
  (like you were backing up) 
   look at the inside of the swingarm, where the other end of the caliper was resting,
          there should be a that  piece of  "channel"
 That keeps your caliper from spinning  all the way around when you apply the brakes.
    The caliper body actually has slots that slide on that "beam" and keep it from rotating.
 This is why it rotates rearward and pulls on your brake line when you back off the truck...
  and when you apply your brakes, the pads apply pressure to the rotor and rock forward hitting the actual mounting point of the caliper....I think... :?
 
  I'll come back and delete this post if I'm all wet...
    Tuck\o/
« Last Edit: December 04, 2009, 06:13:15 PM by Friar-Tuck »
"The Truth Has No Agenda"

Offline riproost

  • Full Member
  • ***
  • Posts: 78
Re: Rear brake ? Floating?
« Reply #5 on: December 04, 2009, 05:42:47 PM »


The bottom caliper mount in this pic has a broken flange on the channel and when the brake was applied the caliper and hose would roll backwards...
I don't know if this is what you have going on but it's something to think about.

 RipRoost
RipRoost

Offline riproost

  • Full Member
  • ***
  • Posts: 78
Re: Rear brake ? Floating?
« Reply #6 on: December 04, 2009, 05:58:04 PM »
Let me reword that.
The caliper would roll back when the brake was applied and the bike rolled backwards.
RipRoost

Offline Friar-Tuck

  • Hero Member
  • *****
  • Posts: 1,827
  • \o/ Live Free or Die
Re: Rear brake ? Floating?
« Reply #7 on: December 04, 2009, 06:16:10 PM »
  Yes!
 Thank you for the Pic RipRoost.   
   I will try to get out of the dark ages and attempt to load pics &
scans/pdf's.  :oops:
  Tuck\o/
"The Truth Has No Agenda"

Offline Polar-Bus

  • Hero Member
  • *****
  • Posts: 1,023
Re: Rear brake ? Floating?
« Reply #8 on: December 05, 2009, 12:03:49 AM »



This is what will happen when you leave your rear axle nut loose for months on a 60 hp KX500.....
01' KX500
'84 GPz1100
'87 GSX-R  750
'06 HD Fatboy
'73 Kawi H1
'03 CRG KX500 Shifter kart