Sportster Models 883, 883 Custom, 1200 Custom, 883L, 1200L, 1200S, 1200 Roadster, XR1200, and the Nightster.
Sponsored by:
Sponsored by:

death wobble/tank slapper/speed wobble - very dangerous

Thread Tools
 
Search this Thread
 
  #41  
Old 06-26-2019, 01:03 PM
Midpegs's Avatar
Midpegs
Midpegs is offline
Outstanding HDF Member
Join Date: Apr 2019
Location: Coventry , England
Posts: 2,180
Received 1,119 Likes on 631 Posts
Default

Originally Posted by lewk
Your front wheel isn't that skinny. It can take a 110/90-19 tire (or tyre) on it. I have one on my 19-inch front.
Well it certainly looks very skinny to me but I'll consider your advice when I'm due for new tyres . Maybe it's the diameter that makes it look do thin .
 
  #42  
Old 06-26-2019, 01:06 PM
lewk's Avatar
lewk
lewk is offline
Road Warrior
Join Date: Apr 2012
Location: Northern Los Angeles area.
Posts: 1,721
Received 228 Likes on 199 Posts
Default

Originally Posted by lewk
Your front wheel isn't that skinny. It can take a 110/90-19 tire (or tyre) on it. I have one on my 19-inch front.
Originally Posted by Midpegs
Well it certainly looks very skinny to me but I'll consider your advice when I'm due for new tyres . Maybe it's the diameter that makes it look do thin .
Some brands are lower profile than others. Stay away from the Shinko 777 front tyre if you want a chunky front.

Here's what a 110/90-19 would look like:


 

Last edited by lewk; 06-26-2019 at 01:11 PM.
  #43  
Old 06-26-2019, 01:20 PM
Midpegs's Avatar
Midpegs
Midpegs is offline
Outstanding HDF Member
Join Date: Apr 2019
Location: Coventry , England
Posts: 2,180
Received 1,119 Likes on 631 Posts
Default

Originally Posted by lewk
Your front wheel isn't that skinny. It can take a 110/90-19 tire (or tyre) on it. I have one on my 19-inch front.
I think I was comparing mine to some of the more modern Sportsters.
 
  #44  
Old 06-27-2019, 01:52 PM
Midpegs's Avatar
Midpegs
Midpegs is offline
Outstanding HDF Member
Join Date: Apr 2019
Location: Coventry , England
Posts: 2,180
Received 1,119 Likes on 631 Posts
Default

Originally Posted by lewk
Some brands are lower profile than others. Stay away from the Shinko 777 front tyre if you want a chunky front.

Here's what a 110/90-19 would look like:

Ok I'll think about fitting a 110 . Did you have to bend the fender supports at all ? My 100 looks pretty close already . Thinking about it though , an extra 10mm isn't going to make a lot of difference because I only appear to be using 80 % of the tyre anyway .
 
  #45  
Old 06-27-2019, 08:44 PM
MoBillyAla's Avatar
MoBillyAla
MoBillyAla is offline
Tourer

Join Date: Aug 2012
Location: USA
Posts: 330
Received 116 Likes on 63 Posts
Default

Same issue with mine, only thing that fixed it was tightening spokes. (Correct air pressure too, of course) If you have spokes, I'd be willing to bet this is it. Don't trust a dealer..3 trips to my local one. I ended up having to tighten in my garage, which yes I should have done 1st anyways.
 
  #46  
Old 06-28-2019, 07:43 AM
apache snow's Avatar
apache snow
apache snow is offline
Road Warrior
Join Date: Sep 2017
Location: over the mountain
Posts: 1,609
Received 693 Likes on 453 Posts
Default

Any time there is a speed wobble one of the first things to check is the fall a way. Loose steering bearings will cause it. The only time I ever had a bad wobble that was it.
 
The following users liked this post:
normannewguy (06-28-2019)
  #47  
Old 06-28-2019, 09:33 AM
lewk's Avatar
lewk
lewk is offline
Road Warrior
Join Date: Apr 2012
Location: Northern Los Angeles area.
Posts: 1,721
Received 228 Likes on 199 Posts
Default

Originally Posted by Midpegs
Ok I'll think about fitting a 110 . Did you have to bend the fender supports at all ? My 100 looks pretty close already . ... an extra 10mm isn't going to make a lot of difference because I only appear to be using 80 % of the tyre anyway .
No I didn't bend anything. But because the clearance is so little, you'll have to install the wheel first, squeeze the tyre past the fender brackets and then inflate. You do look like you have a pretty chunky 100. I installed the 110 just for looks: it's taller and so, it closes the gap between the tyre and the fender.

Originally Posted by apache snow
... Loose steering bearings will cause it. ...
How do you fix that?
 
  #48  
Old 06-28-2019, 09:47 AM
Midpegs's Avatar
Midpegs
Midpegs is offline
Outstanding HDF Member
Join Date: Apr 2019
Location: Coventry , England
Posts: 2,180
Received 1,119 Likes on 631 Posts
Default

Originally Posted by lewk
No I didn't bend anything. But because the clearance is so little, you'll have to install the wheel first, squeeze the tyre past the fender brackets and then inflate. You do look like you have a pretty chunky 100. I installed the 110 just for looks: it's taller and so, it closes the gap between the tyre and the fender.

How do you fix that?
Ok , I probably won't bother then .
 
  #49  
Old 06-28-2019, 11:11 AM
Wizardofaus's Avatar
Wizardofaus
Wizardofaus is offline
Road Warrior
Join Date: Apr 2017
Location: United States
Posts: 1,451
Received 230 Likes on 173 Posts
Default

Originally Posted by lh4x4
Tire pressure, wheel bearing adjustment, steering head adjustment, windshield are just some of the things that need checking as they can cause the problem you are having.

They all must be spot on.
Ive heard a few guys say that a couple of loose spokes in either front or back wheels is enough to have an adverse affect on the gyroscopic forces of the wheel to not track as they should.

I guess it’s not that much when ya bugging round at 30-40 mph, but when ya got those wheels spinning at 90 , you’ve got some serious **** going on down there.

Get this sorted cos she’ll dump you on ya *** when you least expect it.

Ride safe dude

Wiz 🤘
 

Last edited by Wizardofaus; 06-28-2019 at 11:12 AM.
  #50  
Old 06-28-2019, 11:47 AM
apache snow's Avatar
apache snow
apache snow is offline
Road Warrior
Join Date: Sep 2017
Location: over the mountain
Posts: 1,609
Received 693 Likes on 453 Posts
Default

Your dervice manual will tell you how to tighten loose steering head bearings and when to know when they are tight enough.
 


Quick Reply: death wobble/tank slapper/speed wobble - very dangerous



All times are GMT -5. The time now is 02:26 PM.