Front suspension tuning

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6/11/2019 2:30 PM

2011 Kx250f

Ive rebuilt the forks. Have the correct spring rate.
Forks up 7mm (around stock I believe)
55mm of sag (mostly woods riding)
9 out on compression
10 out on rebound
Stock oil weights and volumes.

Rear shock is at 103mm sag forget where the clickers are.

I like how the suspension feels. But I’m getting what I’d call “biting” (handle bars like to tuck entering the corners)

I tried lowering the forks in the triples and did not like that at all front end started washing out.

Any tips as far as clickers, pre load, or sag to help with this but not make the suspension “feel” different?

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6/11/2019 7:11 PM

Add a few clicks of compression.
Reduce front end sag a bit.
Also may want to reduce front air pressure a couple of lbs.

Paw Paw

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6/12/2019 5:09 AM

to me it sounds like you might need to adjust body position. Are you putting weight on the outside peg while cornering?

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6/12/2019 5:11 AM

Thanks! I will try thar! Give 50mm and 45mm a shot.

I’m running 11 psi on SC5’s. Can I go lower with those? Thought I had read the tire can roll at much lower?

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6/12/2019 5:49 AM

fourfourone wrote:

to me it sounds like you might need to adjust body position. Are you putting weight on the outside peg while cornering?

I’m really working on it. I can’t say I do it 100% of the time. Sometimes I get a little faster than my body reacts. I try to ride slower and weight outside footpeg and get up on the front of the bike. It’s noticably different when I have the correct form but still there. The biting is the only thing bothering me with my set up with out that I’d be 100% confident railing a corner.

When I get that right it helps my energy a ton too. I have a tendancy to let the bike pull me out of the corner and I hate it! Trying to break that!

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6/12/2019 6:17 AM

You are so far off with the rear spring that it is hard to diagnose issues properly and normal adjustment won't work (they all assume correct springs are used). Get a softer rear spring that suit your weight.

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6/12/2019 6:21 AM

I’m at 30mm static and 103mm race. Is this not correct? I’m not sure how to check the spring rate but feel I’m within the limits there? Not opposed to changing it if I need to.

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6/12/2019 6:26 AM

duckdog77 wrote:

I’m at 30mm static and 103mm race. Is this not correct? I’m not sure how to check the spring rate but feel I’m within the limits there? Not opposed to changing it if I need to.

Ah ok, I read it like shock had 55mm static. Yo usre good, could drop it to 105mm

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6/12/2019 6:35 AM

Had me worried for a second! 🤣

I rebuilt the front with a racetech spring and they recommend a 105mm ride height. How do I measure ride height? I couldn’t figure that out so I just set the sag in the front.

Just so I know what I’m feeling for...what reaction should I get out of going a little softer in the rear?

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