Knifing in corners caused by...what?

Questions and comments about converting to beefier forks..
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wanaride
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Knifing in corners caused by...what?

Post by wanaride »

I've noticed that my front end wants to knife in corners. What front fork setting should I adjust to fix this? I have '04 KX125 forks on my bike. Thanks!
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2006 KTM 250XCW
2003 KDX200
2006 CRF70
2006 KTM 50 Mini Adventure
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bradf
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Post by bradf »

Assuming the spring rate is very close to optimum and race sag front and rear is set correctly:
If the forks are raised in the clamps then lower (extend) them 1/4"
Speed up the fork rebound (take clicks out)
Increase the rear rebound (put clicks in)

Front and rear action, compression and rebound and spring rates, each have an affect on each other. Adjusting the rear rebound or compression to help the front can help to correct a certain problem in the front but might throw the rear out under other conditions.

The wrong fork spring rate can be the primary issue. Shoving the forks up the clamps to lower the front end will take out rake and can cause knifing due to the geometry being off.
Improper race sag on either end will make for an ill handling suspension in one or more areas. If you don't know exactly what it is then it is probably not exact, or you would know EXACTLY what it is.
'04 220 w/'01 KX250 USD forks, '02 RM125 Showa shock, Rekluse EXP 3.0, LHRB & all RB'd
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