Start_new_topic
Forum Main ›› Race Shop ›› 2007 yz250

Participating Members

Vital MX member Paul-Africa
Vital MX member Justin314
Vital MX member mxr102
Vital MX member lumpy790
Vital MX member indy_maico
Vital MX member Dirt Hammer
Vital MX member Highsider

2007 yz250

Paul-Africa
Vital MX member Paul-Africa

Posts: 106

Joined: 7/21/2008

Location:
CPT, ZAF

Quote

11/4/2009 2:08 PM

Hi All,

I would like some help please.

I sold my 4 stroke and bought a 2007 yz250. The bike was bought new in 2007 by the previous owner, ridden once on a tar road then parked in a garage since then.

After I bought it from him a few weeks ago I have put about 3-4 hours on the bike. I cannot seem to get the suspension plush (as compared to my 2007 CRF250).

The front feels VERY stiff. I have clicked it all the way soft on the bottom and the top. I went in two clicks on the bottom and one on the top from all soft. This feels like the best setting? I also dropped the forks about 10mm in the triple clamps. It came from teh factory sitting right at the top of the fork.

I have no idea about the oil levels or oil weight, I assume it is all still the same as it comes from the factory - seeing as the bike only had about 30mins on it when I bought it.

The back also feels stiff. The free sag was very bad, so I tightened up the spring. Yet even though the sag was too high - it still felt stiff.

It seems the back is either very "spongy" or very stiff. I'm finding it hard to find middle ground. Race sag is about standard at about 100mm.

I am only using the bike for MX and weigh about 175 in kit.

Is the bike like this because it only has a few hours on it? Can the oil go "bad" from standing in a garage all that time? Why are the forks feeling so stiff? Is it my imagination? Am I going mad? Are the stock springs very stiff?

Can someone please help and give advice on where to start. Also - if anyone has the same bike (or newer) - could they please give me their settings if they weigh roughly the same as I do. Thanks!
Justin314
Vital MX member Justin314

Posts: 152

Joined: 2/17/2009

Location:
SUFFOLK, VA

Quote

11/4/2009 3:30 PM

Edited Date/Time:

11/4/2009 3:31 PM

The suspension takes a little while to break in, and until then it will be a little stiff. I would set it back to stock and ride it for a couple more hours on the bike, and go from there.
mxr102
Vital MX member mxr102

Posts: 132

Joined: 5/18/2009

Location:
WATERLOO, IA

Quote

11/4/2009 4:42 PM

Run the sag at 105mm and it will work better in accelerating bumps and square Edge chop.
lumpy790
Vital MX member lumpy790

Posts: 942

Joined: 9/18/2007

Location:
York, SC

Quote

11/5/2009 6:27 AM

Edited Date/Time:

11/5/2009 6:29 AM

Check the front axle alignment....it may be binding and making it stiff. Getting rid of the stock fish oil will help too.
indy_maico
Vital MX member indy_maico

Posts: 1870

Joined: 4/01/2008

Location:
Indianapolis, IN

Quote

11/5/2009 11:43 AM

MXA always does a good job in their tests of telling what suspension settings, jetting, etc worked best for them. That is a good place to start.

Link:

http://www.motocrossactionmag.com/...48CBA81F1433A4CA3994

Dirt Hammer
Vital MX member Dirt Hammer

Posts: 24

Joined: 10/09/2009

Location:
CALHOUN, GA

Quote

11/9/2009 10:10 AM

Does the bike have stock springs? Maybe the owner was a heavier rider than yourself and changed out stock springs.
Highsider
Vital MX member Highsider

Posts: 2293

Joined: 8/15/2006

Location:
Lamoni, IA

Quote

11/9/2009 11:48 AM

Edited Date/Time:

11/10/2009 2:54 PM

All these responders have good ideas to follow.
That bike has the best suspension, for a stock bike, IMO. My 07 450 has the same thing and I weigh 185-190 in full (kit) gear and am running all stock with 105mm sag and a few clicker adjustments. I have shock and fork fluid changed every 6-9 months.
I just had new bushings put in the front forks as it has three full race seasons on it...feels like new!
Enjoy!
Paul-Africa
Vital MX member Paul-Africa

Posts: 106

Joined: 7/21/2008

Location:
CPT, ZAF

Quote

11/10/2009 11:16 AM

Thanks - bike is having fork oil changed, then I'll try and case everything to soften it up!
Highsider
Vital MX member Highsider

Posts: 2293

Joined: 8/15/2006

Location:
Lamoni, IA

Quote

11/10/2009 2:55 PM

Paul-Africa wrote: Thanks - bike is having fork oil changed, then I'll try and case everything to soften it up!

That will work! Have fun!!

Post a Reply to: 2007 yz250

Please log in in order to comment.
Forum Main ›› Race Shop ›› 2007 yz250