Welcome, Guest. Please Login or Register

Author Topic: Floating irritation!  (Read 1024 times)

0 Members and 1 Guest are viewing this topic.

Offline BiG DoM

  • A Grahamstown Greyhound!
  • Moderator
  • Bachelor Dog
  • *****
  • Bike: BMW R1200GS HP2
    Location: Eastern Cape
  • Posts: 17,945
  • Thanked: 245 times
  • License Plates: GSpot EC and HUSKY EC
Floating irritation!
« on: April 28, 2012, 10:57:09 am »
What is the reason for the rattling rear floating disc - have the spring washers rusted away, were never fitted, shyte quality (my bet)? What is the fix? Yes I normally wear earplugs but the cause not the symptom   :(
« Last Edit: April 28, 2012, 11:03:57 am by BiG DoM »
"Love is the feeling you get when you like something as much as your motorcycle" - Hunter S. Thompson

Scoots: BMW HP2  Husky 701R  Husky  TE610E  BMW G450X  KTM 250XCW  Yamaha YZ250X BMW R100S YAMAHA BWS 

 :ricky:
 

Offline M3X3Z3

Re: Floating irritation!
« Reply #1 on: April 28, 2012, 07:01:43 pm »
What is the reason for the rattling rear floating disc - have the spring washers rusted away, were never fitted, shyte quality (my bet)? What is the fix? Yes I normally wear earplugs but the cause not the symptom   :(
If your's is the same as is on the 510, which it "sounds" like it is then:
It is very likely the bushes which are worn, the bushes being them 4 (on the 510) round thingy's holding the disk and which the bolts go through.
The bushes should be replaced ever time the disk is replaced.

The floating disc allows the inner portion of the disc mounting system to be made from a lighter, weaker material and hence decrease the rotating mass of the wheel and adding to the overall lightness of the motorcycle.
Honda XR250  Husqvarna TE630  Husqvarna SM630  KTM 690
 

Offline sidetrack

  • Bachelor Dog
  • *****
  • Bike: Yamaha XT 660 Z
    Location: Gauteng
  • Posts: 12,890
  • Thanked: 334 times
  • President T7 fanclub
Re: Floating irritation!
« Reply #2 on: April 28, 2012, 09:16:16 pm »
Same problem with mine, totally wasted in less than 15 000km. The motor and rear disc is in competition to see who can make the most noise !
Little by little, one travels far
J.R.R Tolkien

Help make the TSAT a reality
http://www.wilddog.za.net/forum/index.php?topic=241580.msg4325284#msg4325284
 

Offline Crowley

Re: Floating irritation!
« Reply #3 on: April 28, 2012, 09:42:06 pm »
The theory is that the disc heats up and expand. With a floating disc it got space to expand. So it prevents it from warping.
That is also why you get the wave rotors – more space to get rid of the heat. Less of a change of getting warped.  Doesn’t work always though.
So if you are hard on your brakes, use a floater. If not think about a solid disc.
 

Offline dirtWarp

  • Senior Member
  • ***
  • Bike: KTM 990 Adventure
    Location: Europe
  • Posts: 2,527
  • Thanked: 42 times
  • I crash like a champ!
Re: Floating irritation!
« Reply #4 on: April 28, 2012, 10:12:21 pm »
Get the Tusk or Braking aftermarket part.
Looks nicer and has lifetime guarantee
 

Offline sidetrack

  • Bachelor Dog
  • *****
  • Bike: Yamaha XT 660 Z
    Location: Gauteng
  • Posts: 12,890
  • Thanked: 334 times
  • President T7 fanclub
Re: Floating irritation!
« Reply #5 on: April 28, 2012, 11:14:49 pm »
Tusk does not even list Husqvarna  :P Could maybe check if another bikes disc will work on the 610 ?
Little by little, one travels far
J.R.R Tolkien

Help make the TSAT a reality
http://www.wilddog.za.net/forum/index.php?topic=241580.msg4325284#msg4325284
 

Offline BiG DoM

  • A Grahamstown Greyhound!
  • Moderator
  • Bachelor Dog
  • *****
  • Bike: BMW R1200GS HP2
    Location: Eastern Cape
  • Posts: 17,945
  • Thanked: 245 times
  • License Plates: GSpot EC and HUSKY EC
Re: Floating irritation!
« Reply #6 on: April 29, 2012, 08:02:26 am »
Ok so in 12000km's the bushes are worn? Will need to have a look. On my HP2 which also has floaters they have cold movement but no rattle - I understood they had sprung spacers/washers that took up the slack when cold and could compress as the disc warmed up. A new wave disc is not going to help unless it is mounted non floating - is that what is being suggested?
"Love is the feeling you get when you like something as much as your motorcycle" - Hunter S. Thompson

Scoots: BMW HP2  Husky 701R  Husky  TE610E  BMW G450X  KTM 250XCW  Yamaha YZ250X BMW R100S YAMAHA BWS 

 :ricky:
 

Offline dirtWarp

  • Senior Member
  • ***
  • Bike: KTM 990 Adventure
    Location: Europe
  • Posts: 2,527
  • Thanked: 42 times
  • I crash like a champ!
Re: Floating irritation!
« Reply #7 on: April 29, 2012, 09:33:21 am »
is that what is being suggested?
yes.
 

Offline sidetrack

  • Bachelor Dog
  • *****
  • Bike: Yamaha XT 660 Z
    Location: Gauteng
  • Posts: 12,890
  • Thanked: 334 times
  • President T7 fanclub
Re: Floating irritation!
« Reply #8 on: May 01, 2012, 09:59:07 am »
I put orings in the disc to take up the exsessive floating slack. The annoying rattle is gone but with heat build up I doubt the orings will last long.
Little by little, one travels far
J.R.R Tolkien

Help make the TSAT a reality
http://www.wilddog.za.net/forum/index.php?topic=241580.msg4325284#msg4325284
 

Offline BiG DoM

  • A Grahamstown Greyhound!
  • Moderator
  • Bachelor Dog
  • *****
  • Bike: BMW R1200GS HP2
    Location: Eastern Cape
  • Posts: 17,945
  • Thanked: 245 times
  • License Plates: GSpot EC and HUSKY EC
Re: Floating irritation!
« Reply #9 on: May 01, 2012, 10:17:24 am »
Ja also thought o-rings would not last. I also notice a bit of rotational wear on the rotor - maybe 1 or 2mm, I think the bushes would definately wear quicker with alot of movement and no compressed washers. I think one would need to be using the back brake alot to get the disc to expand to take up all the tolerance that is there. I am sure one could get suitable washers off another bike at a reasonable price - just need to research.
"Love is the feeling you get when you like something as much as your motorcycle" - Hunter S. Thompson

Scoots: BMW HP2  Husky 701R  Husky  TE610E  BMW G450X  KTM 250XCW  Yamaha YZ250X BMW R100S YAMAHA BWS 

 :ricky:
 

Offline sidetrack

  • Bachelor Dog
  • *****
  • Bike: Yamaha XT 660 Z
    Location: Gauteng
  • Posts: 12,890
  • Thanked: 334 times
  • President T7 fanclub
Re: Floating irritation!
« Reply #10 on: May 01, 2012, 08:56:15 pm »
I did just shy of 200km today and the orings still seems fine. Adding a bit of chain lube to them may well see them last at least a couple of rides. Cheap and worth it I reckon untill you find another disc.
Little by little, one travels far
J.R.R Tolkien

Help make the TSAT a reality
http://www.wilddog.za.net/forum/index.php?topic=241580.msg4325284#msg4325284
 

Offline BiG DoM

  • A Grahamstown Greyhound!
  • Moderator
  • Bachelor Dog
  • *****
  • Bike: BMW R1200GS HP2
    Location: Eastern Cape
  • Posts: 17,945
  • Thanked: 245 times
  • License Plates: GSpot EC and HUSKY EC
Re: Floating irritation!
« Reply #11 on: May 04, 2012, 07:56:56 pm »
Discovered BMW uses rubber washer bushes - always thought there was a sprung washer taking up the movement.
"Love is the feeling you get when you like something as much as your motorcycle" - Hunter S. Thompson

Scoots: BMW HP2  Husky 701R  Husky  TE610E  BMW G450X  KTM 250XCW  Yamaha YZ250X BMW R100S YAMAHA BWS 

 :ricky:
 

Offline sidetrack

  • Bachelor Dog
  • *****
  • Bike: Yamaha XT 660 Z
    Location: Gauteng
  • Posts: 12,890
  • Thanked: 334 times
  • President T7 fanclub
Re: Floating irritation!
« Reply #12 on: May 04, 2012, 11:56:12 pm »
From pictures it appears the 630 uses a normal (non floating) rear disc, wonder if it will fit the 610 ?
Little by little, one travels far
J.R.R Tolkien

Help make the TSAT a reality
http://www.wilddog.za.net/forum/index.php?topic=241580.msg4325284#msg4325284
 

Offline BiG DoM

  • A Grahamstown Greyhound!
  • Moderator
  • Bachelor Dog
  • *****
  • Bike: BMW R1200GS HP2
    Location: Eastern Cape
  • Posts: 17,945
  • Thanked: 245 times
  • License Plates: GSpot EC and HUSKY EC
Re: Floating irritation!
« Reply #13 on: May 05, 2012, 07:55:38 am »
Excuse my ignorance but how do you tell from pictures? I also noticed last night in specs in my handbook that the SM has a floating FRONT disc? Must be real rattle and hum then!  ::)
"Love is the feeling you get when you like something as much as your motorcycle" - Hunter S. Thompson

Scoots: BMW HP2  Husky 701R  Husky  TE610E  BMW G450X  KTM 250XCW  Yamaha YZ250X BMW R100S YAMAHA BWS 

 :ricky:
 

Offline sidetrack

  • Bachelor Dog
  • *****
  • Bike: Yamaha XT 660 Z
    Location: Gauteng
  • Posts: 12,890
  • Thanked: 334 times
  • President T7 fanclub
Re: Floating irritation!
« Reply #14 on: May 05, 2012, 12:29:43 pm »
Check part # RD041, at 29 pounds it should be worth it, not floating.

http://www.racediscs.com/Husqvarna.html
Little by little, one travels far
J.R.R Tolkien

Help make the TSAT a reality
http://www.wilddog.za.net/forum/index.php?topic=241580.msg4325284#msg4325284
 

Offline BiG DoM

  • A Grahamstown Greyhound!
  • Moderator
  • Bachelor Dog
  • *****
  • Bike: BMW R1200GS HP2
    Location: Eastern Cape
  • Posts: 17,945
  • Thanked: 245 times
  • License Plates: GSpot EC and HUSKY EC
Re: Floating irritation!
« Reply #15 on: May 10, 2012, 12:15:29 am »
Had the rear wheel off to change the tyre today and had a good look at the disc - the bushes that hold the disc only use half of a machined recess 180' to capture and hold the disc. I thought of rotating the bush  but when I took them off although the used section seemed polished by the movement it was not visibly worn. The movement and rattle would stillbe there. I could not see an o-ring fitting easily (any I had anyway) and so am trying another solution. I applied a small amount of clear silicone to the recess in the bushes and refitted - I am hoping when dry it may prevent the rattle but still allow floatation/compression where needed... lets see...
"Love is the feeling you get when you like something as much as your motorcycle" - Hunter S. Thompson

Scoots: BMW HP2  Husky 701R  Husky  TE610E  BMW G450X  KTM 250XCW  Yamaha YZ250X BMW R100S YAMAHA BWS 

 :ricky:
 

Offline Cacus

  • Member
  • **
  • Bike: AJS (all models)
    Location: Eastern Cape
  • Posts: 261
  • Thanked: 3 times
  • Yep its a ring ding ding
Re: Floating irritation!
« Reply #16 on: May 10, 2012, 12:29:20 am »
My WR was really bad, I could here it above the motor at idle.I tried silicone in the grooves on the spacer washers.Been for about four or five rides- offroad & they seem fine .Might not last long term but its rather easy to do.
Husky WR 250 (s/legal)
Katoom 530 exc (s/legal)
both hooligan bikes !!
 

Offline BiG DoM

  • A Grahamstown Greyhound!
  • Moderator
  • Bachelor Dog
  • *****
  • Bike: BMW R1200GS HP2
    Location: Eastern Cape
  • Posts: 17,945
  • Thanked: 245 times
  • License Plates: GSpot EC and HUSKY EC
Re: Floating irritation!
« Reply #17 on: May 10, 2012, 12:30:43 am »
My WR was really bad, I could here it above the motor at idle.I tried silicone in the grooves on the spacer washers.Been for about four or five rides- offroad & they seem fine .Might not last long term but its rather easy to do.

Great minds think alike!  Silicone can take heat and vibes so lets see.
"Love is the feeling you get when you like something as much as your motorcycle" - Hunter S. Thompson

Scoots: BMW HP2  Husky 701R  Husky  TE610E  BMW G450X  KTM 250XCW  Yamaha YZ250X BMW R100S YAMAHA BWS 

 :ricky:
 

Offline sidetrack

  • Bachelor Dog
  • *****
  • Bike: Yamaha XT 660 Z
    Location: Gauteng
  • Posts: 12,890
  • Thanked: 334 times
  • President T7 fanclub
Re: Floating irritation!
« Reply #18 on: May 10, 2012, 08:07:27 pm »
Had the rear wheel off to change the tyre today and had a good look at the disc - the bushes that hold the disc only use half of a machined recess 180' to capture and hold the disc. I thought of rotating the bush  but when I took them off although the used section seemed polished by the movement it was not visibly worn. The movement and rattle would stillbe there. I could not see an o-ring fitting easily (any I had anyway) and so am trying another solution. I applied a small amount of clear silicone to the recess in the bushes and refitted - I am hoping when dry it may prevent the rattle but still allow floatation/compression where needed... lets see...
An o-ring does fit (well on mine anyway), tight fit but it worked a treat. I don't mind spending R2 on new o-rings every two months or so.
Little by little, one travels far
J.R.R Tolkien

Help make the TSAT a reality
http://www.wilddog.za.net/forum/index.php?topic=241580.msg4325284#msg4325284
 

Offline BiG DoM

  • A Grahamstown Greyhound!
  • Moderator
  • Bachelor Dog
  • *****
  • Bike: BMW R1200GS HP2
    Location: Eastern Cape
  • Posts: 17,945
  • Thanked: 245 times
  • License Plates: GSpot EC and HUSKY EC
Re: Floating irritation!
« Reply #19 on: May 10, 2012, 09:24:41 pm »
Presumably you put them in the groove of the bush?
"Love is the feeling you get when you like something as much as your motorcycle" - Hunter S. Thompson

Scoots: BMW HP2  Husky 701R  Husky  TE610E  BMW G450X  KTM 250XCW  Yamaha YZ250X BMW R100S YAMAHA BWS 

 :ricky: