Setting Shock Action

A service reference

Setting Shock Action

Postby Indawoods » 04:48 pm Jul 26 2005

Race sag:

This is the most important of the suspension settings. After you have spent some time and gotten the other circuits dialed in, you can try some different sag measurements to create a distinct feel and weight bias. As a general rule you should use about one third of your available travel as sag.

Free sag:

This measurement is taken to determine if you have the proper spring rate for your weight. Observe the characteristics of the motorcycle under its own weight. If the bike tops out or has less than 3/4 of an inch of sag then the spring is too soft! If the bike sags drastically under it's own weight, then it has too stiff a spring rate.

Now that you have got your spring set, you can get to the fun part: Riding your bike!


Setting the rebound:

1.) Find a relatively fast trail with braking bumps, rocks and roots leading into the entrance of a corner. Reduce (Turn clicker out) the rebound damping until the rear end begins to hop or feel loose. Finally, increase (Turn clicker in) the rebound damping until the sensation goes away.

2.) Find a log or ledge that tends to bounce the motorcycle after hitting it. If the rear end bounces up uncontrollably, add rebound. (Turn clicker in)

3.) Find some large whoops. The motorcycle should track straight through the whoops with the rear wheel extending to the ground before the next impact. If it does not perform as described, as above, it is packing and the rebound dampening should be reduced! (Turn clicker out) (Please note the guide for sand set-up, as these rules don't apply for sand.)

4.) Find a corner with acceleration bumps, rocks, and roots on the exit. The rear of the motorcycle should follow the ground. If the rear end "breaks up", reduce the rebound. (Turn clicker out) (If this fails soften the compression two clicks.) (Turn clicker out)

Setting the compression:

1.) Find some rough sections, a large jump and a couple of "G-Outs". The shock should bottom on the roughest section but it should not be a slamming sensation. Add compression to fight bottoming. (Turn clicker in.) But avoid going to far as the suspension's ability to react to small variations of surface and rocks will be sacrificed in the trade. Remember the adjusters have a primary effect on the low speed, so even a large change in setting may only effect bottoming resistance slightly. Remember bottoming your suspension is not necessarily a bad thing. You should strive to bottom off the biggest bottoming load obstacle on the trail. If you don't you're not getting maximum plushness from your suspension. Run your suspension as soft as you can get away with but remember that if the trail has sand sections or lots of g-loads this will work against you.

This information was taken from:
http://www.mx-tech.com/tuning_offroad.asp
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Postby Indawoods » 03:01 pm Dec 08 2006

Team Green Sag Settings

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Postby N8Strine » 07:59 pm Mar 08 2009

thanx.
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Setting Shock Action

Postby two-stroke-brit » 02:03 pm Nov 12 2016

2000 H6 KDX200 .
i have been trying to set the race sag,
i way 170LBs and even with the adjustment all the way out i still cant get more than 2 1/4"
but more frustrating is it didn't change from when it was set in the middle.
Image
even with my daughter that weighs 210LBS I only see 3" or 75mm.
i am fairly sure it is the original shock and spring.
although no way of knowing as multiple owners

The weird thing is the travel seems to vary with no rhyme or reason.

any help or advise would be appreciated.

T I A Mark
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Re: Setting Shock Action

Postby Jason » 03:02 pm Nov 12 2016

Are you using a starting measurement of the rear wheel of the ground? No way that it would be just the inches with that little of preload on the spring. Any chance the linkage bearings are locked up??
Thank you, Julien D for all your hard work!
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Setting Shock Action

Postby two-stroke-brit » 03:58 pm Nov 12 2016

it is possible the linkages are stiff if not locked up.(that would explain the weird measurements )
and i am starting as the above tutorial shows with the wheel on the ground.
i am considering sending it out to get it serviced and correct spring rate for my weight.
its probably never had a service .
thanks mark
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Re: Setting Shock Action

Postby bufftester » 05:13 pm Nov 12 2016

Definitely would spring it for your weight and service it, but Jason brings up a good point. The Uni Trak is the most neglected part of this (and really all) bike. Thoroughly inspect the linkage bearings/seals and swingarm bearings/seals.
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Re: Setting Shock Action

Postby Jason » 07:32 pm Nov 12 2016

The stock spring IS correct for your weight.

The initial measurement is with the bike on a work stand. Put on full gear and measure again while seated and fueled up. Should be about 100 mm.
Thank you, Julien D for all your hard work!
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Setting Shock Action

Postby bufftester » 07:48 pm Nov 12 2016

two-stroke-brit...i am starting as the above tutorial shows with the wheel on the ground.

Jason...The initial measurement is with the bike on a work stand. Put on full gear and measure again while seated and fueled up. Should be about 100 mm.

As Jason noted, the unloaded weight should be wheel OFF the ground, suspension fully extended. The stock rear spring is good for your weight (though the fork springs are not).
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Re: Setting Shock Action

Postby two-stroke-brit » 12:14 am Nov 13 2016

ah ha i see my mistake ,thanks buffy. :supz:
sunday i will check again and report back.
what a rookie mistake.
thanks mark
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Setting Shock Action

Postby two-stroke-brit » 01:04 pm Nov 13 2016

yep that was it 4.0" if race sag.
and i use the term"race" very losely :lol:
cool and i dropped the the forks 1/2" as well .
i made some longer bones to drop the seat height but too long.
will split the diff and make a fresh set.
cheers mark
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Re: Setting Shock Action

Postby Jason » 09:25 am Nov 14 2016

If you do not have stock links, then who knows what your sag may be??
Thank you, Julien D for all your hard work!
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Re: Setting Shock Action

Postby two-stroke-brit » 11:54 am Nov 14 2016

Jason wrote:If you do not have stock links, then who knows what your sag may be??


all the adjustments were done with the stock links in place.
i was planning to drop the seat height after.
thanks mark
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Re: Setting Shock Action

Postby Jason » 12:06 pm Nov 14 2016

Ok, good.
Thank you, Julien D for all your hard work!
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