Fork Spring Preload
Posted March 14, 2008 - 04:26 PM
I just had my new '07 WR450F delivered today. There is still a lot of snow around, so I figured that I would get a lot of the detail work done before I ride my new steed.
It is pretty clear how to set the 'Race Sag' for the rear shock, I've not found much info on the fork. I would imagine that I will need some preload on the fork spring, (I'm 6'4" and 205lb) but, I'm not finding much info on how to go about this. When I checked the sag on the rear, I also checked the front and found it to be stiffer than the rear (ie, cable tie method of determining loaded and unloaded fork travel.) Is there a convention for setting the sag on the fork in relation the the rear shock?
As an aside, my bike will be plated, I added the Trick Dual Sport Micro Kit which is enough to make my bike legal here in NH. I also added the Moose Hand Guards, rejetted the carb, de-snorkled, de-pea-shootered and removed the grey wire. Still left to do is regrease the steering head bearings and the swingarm and suspension linkage bearings.
I am in full on "New Bike Psych mode:busted: !"
Posted March 15, 2008 - 04:49 AM
Posted March 15, 2008 - 10:30 AM
Posted March 15, 2008 - 01:04 PM
What I meant to ask was what should the 'race sag' be for the forks. The manual specifies 90-105 mm for the rear (I think, don't have the manual handy at the moment) I could not find a number for the forks at all in the manual. Is it the same as the rear?
Posted March 17, 2008 - 09:04 AM
I will be doing the sag measurements again in the next couple of days, I'll report back my findings.