Welcome to the WRR/X Forum

A place to share your passion for the WR250R/X!
 
HomeHome  CalendarCalendar  FAQFAQ  SearchSearch  MemberlistMemberlist  UsergroupsUsergroups  RegisterRegister  Log inLog in  
WR250R/X Forum

Share | 
 

 setting fork preload

View previous topic View next topic Go down 
AuthorMessage
morgan9283




PostSubject: setting fork preload   Fri Dec 20, 2013 11:20 pm

I'm up my suspension and my front sag is really off.  Usually preload is set by removing the fork caps and replacing spacers.  The fork caps on my '12 WRR unthread about a half an inch and then just click once per turn, like they're not meant to come out.  Both forks behave the same way suggesting it's normal.

Am I missing something?  I don't see anything in the manual--it appears from the manual and various internet sources like they unthread like every other bike I've worked on.

thanks,

-morgan
Back to top Go down
YZEtc

avatar


PostSubject: Re: setting fork preload   Wed Dec 25, 2013 12:33 pm

The clicking once per turn is probably from the threads of the cap and fork tube already being fully undone, and your continued turning of the cap is having it reaching and falling off the last thread once a turn.
I'm guessing you're doing this with the bike up on a stand, and the weight of the front wheel and front fork, itself, is keeping you from simply removing the cap with your fingers, and that's because the cap is attached to the damper rod that threads into it.

You need to take a look at the Service Manual and read on how the cap is removed on this KYB 46mm inverted open-chamber fork.

Also, while I'm not certain about this for a WR-250R (I'd ask a suspension guy who knows the bike), other bikes I've owned with similar forks had the Service Manual mention any preload adjustment was done by adding thin spacers (they look more like washers because they are not very thick - you may be thinking about old damper rod forks from the 1970s and 1980s) to the bottom of the springs.
Back to top Go down
morgan9283




PostSubject: Re: setting fork preload   Mon Dec 30, 2013 2:05 pm

YZEtc wrote:
The clicking once per turn is probably from the threads of the cap and fork tube already being fully undone, and your continued turning of the cap is having it reaching and falling off the last thread once a turn.
I'm guessing you're doing this with the bike up on a stand, and the weight of the front wheel and front fork, itself, is keeping you from simply removing the cap with your fingers, and that's because the cap is attached to the damper rod that threads into it.

You need to take a look at the Service Manual and read on how the cap is removed on this KYB 46mm inverted open-chamber fork.

Also, while I'm not certain about this for a WR-250R (I'd ask a suspension guy who knows the bike), other bikes I've owned with similar forks had the Service Manual mention any preload adjustment was done by adding thin spacers (they look more like washers because they are not very thick - you may be thinking about old damper rod forks from the 1970s and 1980s) to the bottom of the springs.

It turns out the fork cap comes out fine with the front wheel removed: that allows allows the fork to collapse and the cartridge, spring, etc to come up.  I'm clearly a rusty on servicing suspension.

In terms of setting preload, there is no spacer so I ordered lighter springs (I weight 155 lbs).  They should be in this week so we'll see how that goes.

thanks for the advice.

-morgan
Back to top Go down
bradrh




PostSubject: Re: setting fork preload   Fri Feb 14, 2014 7:43 pm

morgan9283 wrote:

It turns out the fork cap comes out fine with the front wheel removed: that allows allows the fork to collapse and the cartridge, spring, etc to come up.  I'm clearly a rusty on servicing suspension.

In terms of setting preload, there is no spacer so I ordered lighter springs (I weight 155 lbs).  They should be in this week so we'll see how that goes.

thanks for the advice.

-morgan
What stiffness spring did you use, how did it work out for you?  Did you try lighter oil first?
Back to top Go down
LordEndo

avatar


PostSubject: Re: setting fork preload   Sat Feb 15, 2014 3:32 am

You're correct (obviously) no spacer. Apparently 19mm of preload stock from what Racetech told me. I measured and didn't get that number, but didn't factor in the compression of the fork cap.
Back to top Go down
Sponsored content




PostSubject: Re: setting fork preload   

Back to top Go down
 
setting fork preload
View previous topic View next topic Back to top 
Page 1 of 1
 Similar topics
-
» setting fork preload
» Fork compression setting -NO Click
» Fork oil
» suspension setup help
» USD fork swap on XRR

Permissions in this forum:You cannot reply to topics in this forum
Welcome to the WRR/X Forum :: Technical :: General Maintenance Discussion-
Jump to: