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Old 07-13-2014, 05:11 PM   #1
ADVill OP
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Location: West Tn, USA
Oddometer: 527
990 stock fork adjustments

Ok I don't have time to send my forks off to be resprung/damped(ok that's a lie, I just don't want to right at this moment). What should I do to them to help out from bottoming riding off road? 220 lb rider.
-heavier wt oil?
-higher oil height?
-more spring preload?
-higher compression setting?
-more rebound damping?

Combo of all above

I'm not a stranger to doing this, so let it fly
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Old 07-13-2014, 05:47 PM   #2
ADVill OP
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Ok I'm about maxed out on adjustments without going real crazy. 3 extra turns of preload, 5 clicks out on compression, 10 out on rebound. Yup too soft. Hadn't added oil yet but that won't accomplish what I need.
New springs, etc needed... Thanks
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ADVill screwed with this post 07-13-2014 at 05:59 PM
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Old 07-13-2014, 06:26 PM   #3
Chuckracer
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Glad to help!

Yeah, the stock springs are a little soft even for my 150 lbs. You definitely want springs - 5.6 or so I guess.
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Old 07-13-2014, 08:47 PM   #4
Maoule
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Before I sent mine to SP, I tried a 6.4 spring (I'm 215-220) - it helped some. After SP, I noticed, more than anything, how much more compliant the shock is and I think that together w/ the fork revalve makes the front work much better. FWIW, the oil in mine is 5 wt and 100mm height.
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Old Yesterday, 07:40 PM   #5
Torque
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Assuming you have not shipped the suspension yet.
1. Heavier weight oil will make the forks more harsh than ever.
2. Higher oil height will increase bottoming resistance at the last couple inches. You can just squirt 5cc of any 5wt fluid through your bleed holes and test. If better but still clanking add another 5cc per leg.
3. More pre-load. Once you get past 20 or 30mm of pre-load it will not help.
Your bike will be so much more plush with correct springs as you will be riding in the softer part of the spring as it is not squished down and hanging on for dear life in the stiffest part of the stroke. Spring works best with about 10mm of pre-load.
4. More compression, Yes this will help some but too much again making it harsh.
The forks as many WP's do, tend to blow through the stroke. When tuned the mid valve compression is brought into play sooner allowing the fork to have more initial compression to keep it higher in the stroke ready for the big hit with more travel making them work as they should.
5. More rebound? Rebound to the point of no Packing may help a bit keeping a bit of weight of the forks.
You can try lowering the forks in the triple clamps a bit to take a bit of weight off the forks.
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Old Yesterday, 07:53 PM   #6
gearheadE30
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I've done the stiffer springs with stock valving (.59) and now have proper suspension (.64, SPS). It's worth having it revalved, trust me. Just stiffer springs really overwhelms the already stock damping, and it's just out of control and miserable. Very pogo-y and still easy to bottom because of a lack of compression damping. Thicker oil might help, but it won't change the profile at all, just make it harsher. You'll still blow through travel, but you'll feel the little stuff more. Not great.
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Old Yesterday, 08:24 PM   #7
ADVill OP
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Gonna go with higher oil height and more preload for now along with both more compression and rebound until it can be redone right. See my other post about trying to contact SP...err..
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