Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 05-03-08, 08:38 PM   #1
AKRX
Senior Member
Thread Starter
 
Join Date: May 2007
Bikes:
Posts: 83
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Wheel seems off-center

I am not too sure if it was like this when I got it, but it seems weird. My rear tire has plenty of clearance from the chainstay on the drivetrain side, but on the disc side, there is very little. This becomes a pain when I'm in the mud. Could this be part of the bikes design, or does something smell odd about this? Could there be something wrong with the hub's alignment, or is it a bent frame? Can you fix a bent aluminum mountain bike frame?

I can't see whether or not the wheel is aligned with the seatstay. The toptube obstructs my view.
AKRX is offline   Reply With Quote
Old 05-03-08, 08:50 PM   #2
Retro Grouch 
Senior Member
 
Retro Grouch's Avatar
 
Join Date: Feb 2004
Location: St Peters, Missouri
Bikes: Rans Rockst (Retro rocket) Rans Enduro Sport (Retro racket) Catrike 559, Merin Bear Valley (beater bike).
Posts: 26,543
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 62 Post(s)
My bet is that your rear wheel's "dish" is off. A quick, dirty way to check is reinstall your wheel in the frame backward. If the clearance is now on the non-drive side you need to have your wheel's dish corrected.
Retro Grouch is offline   Reply With Quote
Old 05-03-08, 08:52 PM   #3
SweetLou
Senior Member
 
SweetLou's Avatar
 
Join Date: Jul 2007
Bikes:
Posts: 2,114
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Flip the wheel and see if you have the same problem with the other side.
SweetLou is offline   Reply With Quote
Old 05-03-08, 09:40 PM   #4
Bill Kapaun
Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Bikes: 86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.
Posts: 9,201
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
If the QR isn't tight enough, you can "pull" that side forward under hard pedaling.
Bill Kapaun is offline   Reply With Quote
Old 05-03-08, 09:43 PM   #5
Retro Grouch 
Senior Member
 
Retro Grouch's Avatar
 
Join Date: Feb 2004
Location: St Peters, Missouri
Bikes: Rans Rockst (Retro rocket) Rans Enduro Sport (Retro racket) Catrike 559, Merin Bear Valley (beater bike).
Posts: 26,543
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 62 Post(s)
Quote:
Originally Posted by Bill Kapaun View Post
If the QR isn't tight enough, you can "pull" that side forward under hard pedaling.
I doubt that's it in this case. I haven't seen any rear disc brake bikes with horizontal dropouts.
Retro Grouch is offline   Reply With Quote
Old 05-03-08, 10:32 PM   #6
sivat
Geek Extraordinaire
 
sivat's Avatar
 
Join Date: Feb 2006
Location: Long Beach, CA
Bikes: Bianchi Advantage Fixed Conversion; Specialized Stumpjumper FS Hardtail
Posts: 1,769
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Retro Grouch View Post
I doubt that's it in this case. I haven't seen any rear disc brake bikes with horizontal dropouts.
The surly karate monkey is that way.
__________________
I'd rather have a bottle in front of me than a frontal lobotomy.

Sintesi Conversion Serotta Track
sivat is offline   Reply With Quote
Old 05-04-08, 11:36 AM   #7
AKRX
Senior Member
Thread Starter
 
Join Date: May 2007
Bikes:
Posts: 83
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Well, I flipped the wheel, and when I do, it is almost centered (there is still a bit less on the left chainstay, where the disc would have been.

So... bent frame AND unaligned wheelset? I think I might just take it in to the shop and have them set up the wheel so the clearance centers.
AKRX is offline   Reply With Quote
Old 05-04-08, 11:59 AM   #8
Servo888
Senior Member
 
Join Date: Oct 2007
Location: SE, Michigan
Bikes: k2 Zed 3.0
Posts: 518
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I was going to post a similar thread; but I think I have the same issue. If I look down the back of my bike, and the rear wheel is 1/4" off center from the top tube. I'm 100% sure it's not a bent frame, because the wheel is on there perfectly (parallel to the frame), it's just 'pushed' to one side. The interesting thing is that I'm also 80% sure (still need to double check) that the wheel fits perfectly on my other frame.
Servo888 is offline   Reply With Quote
Old 05-04-08, 04:13 PM   #9
SweetLou
Senior Member
 
SweetLou's Avatar
 
Join Date: Jul 2007
Bikes:
Posts: 2,114
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by AKRX View Post
Well, I flipped the wheel, and when I do, it is almost centered (there is still a bit less on the left chainstay, where the disc would have been.

So... bent frame AND unaligned wheelset? I think I might just take it in to the shop and have them set up the wheel so the clearance centers.
Check to see if the frame is straight. I doubt if you have the tool, but you can use string. Take the rear wheel off the bike. Tie a piece of string around one of the dropouts, take the string to the other drop out, then up to the head tube, around the bike to the original dropout, then tie the string off to something. Make sure the string sections from the head tube to the dropouts go through the drop outs at the same place and nothing is causing one to be pushed out. Measure the distance from the seat tube to the string on both sides, they should be equal.
SweetLou is offline   Reply With Quote
Old 05-04-08, 04:15 PM   #10
SweetLou
Senior Member
 
SweetLou's Avatar
 
Join Date: Jul 2007
Bikes:
Posts: 2,114
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Servo888 View Post
I was going to post a similar thread; but I think I have the same issue. If I look down the back of my bike, and the rear wheel is 1/4" off center from the top tube. I'm 100% sure it's not a bent frame, because the wheel is on there perfectly (parallel to the frame), it's just 'pushed' to one side. The interesting thing is that I'm also 80% sure (still need to double check) that the wheel fits perfectly on my other frame.
Well, if the wheel is dished correctly, then you should have the same problems with both bikes. If not, then one of your bikes' frame is bent. Or you have one of those strange offset chainstay bikes. Do the string test that I mentioned above.
SweetLou is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 09:08 AM.