|
Author |
Message |
ThunderGuts |
This post is not being displayed .
|
ThunderGuts World Chat Champion
Joined: 13 Nov 2018 Karma :
|
Posted: 10:34 - 05 Feb 2019 Post subject: "Oval" rear wheel (drum brake) - what is it? |
|
|
Morning all
So I'm going to take a look at my ER5's rear wheel this weekend as my rear brake "pulses" when applied (and has just started making a slight squeal just before I come to a stop). Now from what I can gather, a good clean up and lube of joints/pivots etc. can solve a lot of rear drum issues, but I've also heard of the infamous "oval wheel" syndrome.
Is this literally what it sounds like, i.e. the drum itself is no longer round? Or is it something else? What sort of roundness (!) can I (or should I) expect if I measure the inside of the drum? Within half a mm or something?
Cheers all. ____________________ TG. |
|
Back to top |
|
You must be logged in to rate posts |
|
|
Meatybeaty |
This post is not being displayed .
|
Meatybeaty World Chat Champion
Joined: 10 Apr 2016 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
redeem ouzzer |
This post is not being displayed .
|
redeem ouzzer World Chat Champion
Joined: 06 Oct 2015 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
Riejufixing |
This post is not being displayed .
|
Riejufixing World Chat Champion
Joined: 24 Jun 2018 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
ThunderGuts |
This post is not being displayed .
|
ThunderGuts World Chat Champion
Joined: 13 Nov 2018 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
Pete. |
This post is not being displayed .
|
Pete. Super Spammer
Joined: 22 Aug 2006 Karma :
|
Posted: 13:20 - 05 Feb 2019 Post subject: |
|
|
More likely cracked than oval. Does the wear indicator show that you need new shoes? ____________________ a.k.a 'Geri'
132.9mph off and walked away. Gear is good, gear is good, gear is very very good |
|
Back to top |
|
You must be logged in to rate posts |
|
|
R1stu |
This post is not being displayed .
|
R1stu Shrek!
Joined: 12 Mar 2003 Karma :
|
Posted: 13:44 - 05 Feb 2019 Post subject: |
|
|
My 350 has this, never worried about it, last 3 MOTs just been an advisory for 'Slight fluctuation of the rear brake'
Drum was clean from the powder coaters so must have been uneven wear causing it.
If it gets to point it fails, I have a spare rear wheel and more than likely cheaper than repairing. ____________________ Carbon closet tart! https://www.bikepics.com/members/r6stuk/02r6/
Stolen bike. 2000 R1: https://www.bikepics.com/members/r6stuk/00r1/
Current bike 1991 Honda ST1100 Pan European, 1986 Honda cb350sg (Finished) |
|
Back to top |
|
You must be logged in to rate posts |
|
|
ThunderGuts |
This post is not being displayed .
|
ThunderGuts World Chat Champion
Joined: 13 Nov 2018 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
Riejufixing |
This post is not being displayed .
|
Riejufixing World Chat Champion
Joined: 24 Jun 2018 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
ThunderGuts |
This post is not being displayed .
|
ThunderGuts World Chat Champion
Joined: 13 Nov 2018 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
Riejufixing |
This post is not being displayed .
|
Riejufixing World Chat Champion
Joined: 24 Jun 2018 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
Pete. |
This post is not being displayed .
|
Pete. Super Spammer
Joined: 22 Aug 2006 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
ThunderGuts |
This post is not being displayed .
|
ThunderGuts World Chat Champion
Joined: 13 Nov 2018 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
MCN |
This post is not being displayed .
|
MCN Super Spammer
Joined: 22 Jul 2015 Karma :
|
Posted: 18:20 - 05 Feb 2019 Post subject: |
|
|
If in doubt whip it out.
15-20mins will remove the wheel and open the drum.
YU still posting? ____________________ Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN. |
|
Back to top |
|
You must be logged in to rate posts |
|
|
kgm |
This post is not being displayed .
|
kgm World Chat Champion
Joined: 04 Jun 2015 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
ThunderGuts |
This post is not being displayed .
|
ThunderGuts World Chat Champion
Joined: 13 Nov 2018 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
Pete. |
This post is not being displayed .
|
Pete. Super Spammer
Joined: 22 Aug 2006 Karma :
|
Posted: 11:06 - 06 Feb 2019 Post subject: |
|
|
That will be fine just don't over-do it. You don't want the grease to end up plastered over the shoes. ____________________ a.k.a 'Geri'
132.9mph off and walked away. Gear is good, gear is good, gear is very very good |
|
Back to top |
|
You must be logged in to rate posts |
|
|
ThunderGuts |
This post is not being displayed .
|
ThunderGuts World Chat Champion
Joined: 13 Nov 2018 Karma :
|
Posted: 11:55 - 06 Feb 2019 Post subject: |
|
|
Grease on the shoes might stop the squeaking . . . joke ____________________ TG. |
|
Back to top |
|
You must be logged in to rate posts |
|
|
MCN |
This post is not being displayed .
|
MCN Super Spammer
Joined: 22 Jul 2015 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
ThunderGuts |
This post is not being displayed .
|
ThunderGuts World Chat Champion
Joined: 13 Nov 2018 Karma :
|
Posted: 13:14 - 09 Feb 2019 Post subject: |
|
|
Ok I think I’ve found the issue. Looks like the lining as lifted slightly from the wheel in one spot creating a high point. It’s clear this is where the shoes are wearing the drum the most. There is a small crack in the centre of this high point approx 8mm long.
The engineer in me tells me this is bad ____________________ TG. |
|
Back to top |
|
You must be logged in to rate posts |
|
|
redeem ouzzer |
This post is not being displayed .
|
redeem ouzzer World Chat Champion
Joined: 06 Oct 2015 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
ThunderGuts |
This post is not being displayed .
|
ThunderGuts World Chat Champion
Joined: 13 Nov 2018 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
Pete. |
This post is not being displayed .
|
Pete. Super Spammer
Joined: 22 Aug 2006 Karma :
|
Posted: 16:19 - 09 Feb 2019 Post subject: |
|
|
No matter which way you look at it that drum liner is warped. Could be that the ally hub has oxidised under that crack and the oxidisation has pushed the liner in.
If it was a very rare wheel I'd look at finding someone with a lathe and skim that drum, but otherwise a replacement would be sought. If the juddering was bad and I absolutely had to have the bike for use I'd maybe linish off the high spots with a flap wheel whilst I spent time looking for a replacement. ____________________ a.k.a 'Geri'
132.9mph off and walked away. Gear is good, gear is good, gear is very very good |
|
Back to top |
|
You must be logged in to rate posts |
|
|
ThunderGuts |
This post is not being displayed .
|
ThunderGuts World Chat Champion
Joined: 13 Nov 2018 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
MCN |
This post is not being displayed .
|
MCN Super Spammer
Joined: 22 Jul 2015 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
Old Thread Alert!
The last post was made 5 years, 77 days ago. Instead of replying here, would creating a new thread be more useful? |
|
|
|