All Things Moto! Web Forums

Go Back   All Things Moto! Web Forums > Dirt Bike - ATV - Suspension Forums > Dirt Bike Suspension Tuning

     
Reply
 
LinkBack Thread Tools
  #1  
Old 04-21-2007, 07:32 AM
stfaulk89's Avatar
Intermediate Class
 
Join Date: Jan 2007
Last Online: 12-08-2008 04:18 PM
Location: Louisiana
Posts: 104
Default Yz250f fork problems

Ok, before I say anything I know there is a post like this one, but my problem is a bit different..
Since I have bought this bike, my front forks seemed to be realy stiff when riding over anything rough it would seem like they would not compress, and toss the wheel left or right to get over the obstacle. I thought it might have just been me for a while under I rode other bikes.. I notice that it is realy soft and keeps a straight path...
So I was seeing if my forks would compress at all riding down the street and putting my front brake on.. they went down an 1inch at the most and stopped... I got my dads friend to try it, same thing, and he knows then he knows something is wrong with it because he knows alot about the subject.
I want to know if I can help this problem any way before I change my fork oil.. and does any of the clamps do anything to help this?
Reply With Quote
  #2  
Old 04-21-2007, 07:36 AM
Semper Fidelis
 
Join Date: Dec 2002
Last Online: 02-26-2014 07:31 AM
Location: Barrineau Park, FL
Posts: 7,291
Usflag Re: Yz250f fork problems

Stanton,
It sounds like your forks are twisted in the triple clamps. Get them straight and check the travel then. You will have to loosen the fasteners from the clamps all the way down to the axle pinch bolts. Let us know if this helps.

BTW, do you know for sure the oil level isn't too full?

Bill
Reply With Quote
  #3  
Old 04-21-2007, 07:39 AM
stfaulk89's Avatar
Intermediate Class
 
Join Date: Jan 2007
Last Online: 12-08-2008 04:18 PM
Location: Louisiana
Posts: 104
Default Re: Yz250f fork problems

Thanks Bill, I wasn't too sure about the clamps and I knew somewhere here could help out, I'll let you know how it does

And, I am not sure about my oil level height
Reply With Quote
  #4  
Old 04-23-2007, 05:16 PM
stfaulk89's Avatar
Intermediate Class
 
Join Date: Jan 2007
Last Online: 12-08-2008 04:18 PM
Location: Louisiana
Posts: 104
Default Re: Yz250f fork problems

It didnt make a difference, im going to take out some fork oil, and easy way to doing this?
Reply With Quote
  #5  
Old 04-23-2007, 05:26 PM
The Baron's Avatar
ATM! Pro Class
 
Join Date: Jan 2007
Last Online: 07-18-2008 01:40 PM
Location: Arizona
Posts: 2,579
Default Re: Yz250f fork problems

The forks being twisted in the clamps won't cause a bind as the lower fork legs can turn in the uppers. What would cause a bind is if the axle isn't centered in the two lower forks.

1. Loosen the axle nut and then loosen the axle pinch bolts on the lower fork bosses.
2. While holding the front brake, bounce the fron end up and down to make sure everything find it's place.
3. Tighten the left side axle pinch bolts, then the axle nut, then the right side pinch bolts.

Everyone has their own technique but this should unbind the forks if they are in fact bound up. If it were me, I would most likely pull the forks all the way out of the clamps, pull the clamps off the frame and then reassemble after greasing everything just to be sure. There is a possibility that one of your clamps are tweaked and/or the clamp pinch bolts were over-tightened at some point thus pinching the fork tubes and causing a bind inside.
Reply With Quote
  #6  
Old 04-23-2007, 05:40 PM
stfaulk89's Avatar
Intermediate Class
 
Join Date: Jan 2007
Last Online: 12-08-2008 04:18 PM
Location: Louisiana
Posts: 104
Default Re: Yz250f fork problems

Thanks baron, I will try that next, any other things I should try?
Reply With Quote
  #7  
Old 04-23-2007, 07:27 PM
ATM! Pro Class
 
Join Date: Jan 2006
Last Online: 03-28-2010 04:02 PM
Location: anchorage alaska
Posts: 2,112
Default Re: Yz250f fork problems

If the forks seem to bind and stick down, I would say bill and baron have you on the right track.

DONT just start pumping oil out. To see if you have full movement, remove the caps (with the bike on a stand so the front wheel is suspended) take the caps off the rods, and then remove the springs,,,slide the forks up and down. See if they are catching. Measure the oil from the top when the springs are out and the suspension is compressed. Don't be a "butcher".
Reply With Quote
Sponsored Ads
  #8  
Old 05-03-2007, 07:09 PM
stfaulk89's Avatar
Intermediate Class
 
Join Date: Jan 2007
Last Online: 12-08-2008 04:18 PM
Location: Louisiana
Posts: 104
Default Re: Yz250f fork problems

Ok, I made sure they were not sticking, they are not..
today I took my front forks completely off, but my two bottom nuts were stuck on their too damn tight, I could not get them off, neither could my dad.. so I grinded them off.. but once if got my front wheel off and all the clamps un done i took the fork off and just to see how it did, and sure enough it went down all the way, and was soft for me.. is this a sign that everything was too tight? because some of the bolts on my clamps were tight as hell too..
If anyone can fill me in I'll appreciate it.. asked here before I went ahead and drained my oil
Reply With Quote
Reply

  All Things Moto! Web Forums > Dirt Bike - ATV - Suspension Forums > Dirt Bike Suspension Tuning


Bookmarks

Thread Tools


Similar Threads for: Yz250f fork problems
Thread Thread Starter Forum Replies Last Post
Fork Problems 93 KX frame up 2-Stroke Dirt Bikes - Kawasaki 0 06-08-2008 04:57 PM
Fork oil question ?( 2004 YZ250F) YFZQUIN Dirt Bike Suspension Tuning 3 03-23-2008 12:19 AM
'04 YZ250F fork seal replacemnt..Help!! ScottyJFZ1 Dirt Bike Suspension Tuning 3 11-02-2007 09:34 PM
Wanted .44 Fork springs YZ250F Yamahax22 Classified Ads 0 03-31-2005 06:45 PM
YZ250F Fork rebuild VET393 4-Stroke Dirt Bikes - Yamaha 5 03-07-2005 04:45 PM


All times are GMT -6. The time now is 05:54 PM.

Portal Forums Photo Gallery Popular Tags

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright ©2002-2014, JDub Consulting, Inc. All Right Reserved.