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View Full Version : Is this the kinda PVC pipe/tube for front forks?


Kintore
05-26-2008, 10:07 PM
Hey guys, got this at TSC its 1" PVC pipe

is this what you guys are running in the front forks?


Thanks alot

PICS-
http://i3.photobucket.com/albums/y92/JoshBall/P5250212.jpg
http://i3.photobucket.com/albums/y92/JoshBall/P5250213.jpg
dizasterzrfun69
05-26-2008, 10:09 PM
thats pretty much what i ran in my 85 R, i havent ever taken it out to look at it but it seems to be working alright.
Kintore
05-26-2008, 10:17 PM
I just wanna make sure itll hold up to my abuse!
Dirtcrasher
05-26-2008, 11:31 PM
Those are couplings which is fine as long as they fit. The 200CC forks take either a 3/4 or 1" PVC that has to be ground down just a bit to fit inside the tube. I'll bet that coupling is perfect for a 250R fork spring diameter but it's all the same crap.

For the guys that cut there own, you have to make sure that there isn't ANY PVC cut crap that can come off and work it's way into seal area.
MTS
05-27-2008, 12:00 AM
Cant say im a fan of the whole PVC pipe stiffner, Quickens up the rebound too much Imo...
Dammit!
05-27-2008, 02:26 AM
Cant say im a fan of the whole PVC pipe stiffner, Quickens up the rebound too much Imo...

Use a thicker oil to compensate.
factoryX
05-27-2008, 03:48 AM
Is this reliable?
Dammit!
05-27-2008, 11:11 AM
Is this reliable?

I've had PVC spacers in my forks for two years with no problems. They get the crap beat out of them too.
oldsking86
05-27-2008, 12:06 PM
SO that's what you guys use to stiffen up the front forks then huh?! haha Heck I was going to use heavier oil but how does this work actually?
Dammit!
05-27-2008, 12:20 PM
It just preloads the spring. The bigger the spacer the greater the preload. Think about it for a second it'll make sense. ;)
oldsking86
05-27-2008, 12:31 PM
ahhh I got in now :) took a sec or 2
Tecate250
05-27-2008, 01:13 PM
Do these go inside the fork tube? They look like seal savers to me. Where can you get seal savers?
Dirtcrasher
05-27-2008, 01:55 PM
They go inside the tube and preload the spring.

I think most of us started doing it because were old and fat.... It most likely does increase the rebound rate but I honestly can't say that even fresh 23 yo forks are willing to absorb a big impact. They work, they do the trick but better fork designs are needed for big leaps.

Mine are about 1.250" long and I run 15 or 20wt, they look at you with 2 heads when you ask for 20 wt, I guess the next step would be to run gear oil :lol: