Posted May 05, 2005 - 08:53 AM
Here are my measurements....
625mm (this is with me holding the backend all the way up - tire off the floor)
595mm (this is the bike with it's own weight)
505mm (this is with me on the bike)
I am confused because the sag is at 90mm, but seems like some people measure from fully unloaded, and some with the bike sitting there on its own weight.
It just feels really soft to me.
Any advice would be awesome! Thanks!
Posted May 05, 2005 - 09:23 AM
Posted May 05, 2005 - 10:04 AM
What is the best way to get to the spring for adjustment, should I take the airbox off?
Also, do I need to adjust by feel, or can I measure the spot on the spring where it is now, then measure 15mm up and just adjust it to there?
Posted May 05, 2005 - 11:42 AM
I am about 210 with gear and I installed a 5.8 Eibach over the winter. It totally changed my bike. With less preload on the spring, the suspension is more compliant and tracks small bumps better. I also have much less chatter from the rear tire under heavy braking.
Now that the bike rides higher in the stroke, it steers quicker and is easy to flick around. It jumps better too since the rear doesn't blow through the stroke on the face of the jump.
I should have done this before I started the bike.
Posted May 05, 2005 - 11:49 AM
I put the bike up on the stand and I can usually turn the spring by hand and the lower locking ring follows the spring.
If you are big and you put in to much preload you'll have a stink bug.
I just call up Factory Connection and have them send me the springs.
Many times you need less compression dampening and more rebound.
It sounds like a lot of work but TV sucks and the old lady is usually pissed at me anyway.
Posted May 05, 2005 - 04:45 PM
...is precisely right, as is beezer's observation that a too stiff spring will ride better than a spring that's too soft by the same amount. That's because with a soft spring, the only way you can keep it from bottoming is to crank up the compression damping, and the ride gets overly harsh.
Race sag is measured with the bike fully unloaded (with the bike on the stand) vs. fully loaded (with you and all of your riding gear seated on the bike). The diffirence between these two measurements should measure 100-105mm depending on the handling characteristics you are trying to achieve. 100mm will yield better handlling for tighter turning, and 105mm will give you more stability for open desert riding. Free sag is the measurement between fully unloaded vs. fully loaded (weight of the bike only without you sitting on it) and gives you an indication of whether or not your shock spring is correct for your weight. Generally, between 15-25mm is the accepted norm. Less than 15mm means the spring is too soft, more than 25mm means the spring is too stiff. Free sag should only be checked after the race sag has been set.
Then: http://www.tootechra...pension Tip.htm
You can, if you choose, use a soft punch ( I use a length of 1/8 x 1" aluminum bar stock, but don't tell anyone; I'm supposed to be a pro or something ) and rotate the rings that way. Just don't get too heavy handed, and make the adjustments while it's on the stand to take as much pressure off the spring as possible.