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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
YZ250 spring rates
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[QUOTE="avlehtine, post: 24223, member: 20290"] Hi, I'm 95 kg (about 220lbs.) and ride a -00 YZ250. I'm no pro but it sure feels fast when I ride. My problem is that I can't seem to set the bike up so that it doesn't bottom out (marks inside rear fender). I have the low-speed compression at 7 clicks (default 7) out and hi-speed at 1/2 a turn(default 2/6 turns). The defaults are different in Europe than in the US, don't know if the internals differ or if it's because of the different spring or general rider preferences. The spring is 5.0 unequal pitch (I suppose this means variable rate or progressive=the same thing as far as I understand). It has two black dots near the bottom. It bottoms out in really sharp whoops when I happen to slam the rear end into the face of one of the whoops. I have bottomed it in jumps too. Marks on fender plus I see it is at least pretty nearly bottoming on video. [url="http://personal.inet.fi/luonto/the.man/videot.html"]http://personal.inet.fi/luonto/the.man/videot.html[/url] I have the sag like this: on stand: 605 mm. on ground: 585-590 mm., depending on how it bounces up me on the bike: 490-500 mm, depending on where I sit. 500 practically on the tank, 490 near rear fender but still on the seat. Any idea what spring rate I should go for in the rear and if I should use progressive or straight rate? The fork is still at factory settings, should I change the fork springs too or add washers for more preload? I'd be grateful for any insight into this matter. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
YZ250 spring rates
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