ATV Drag Racer Forums banner

1 - 20 of 36 Posts

·
Registered
Joined
·
489 Posts
Discussion Starter · #1 ·
Guys when you run your bikes at the track with a bar where do you like rear marvins pressure to be at. mine was at 650 and does not give much. I taped the valve a couple times to let a little pressure out. Its a good bit softer and when I sit on it the swinger its a little above level and does not give to much after that. Does this seem to be about right?
 

·
Registered
Joined
·
507 Posts
link or no link? swinger length? ride hieght? rider wieght? 300ft track? groomed track? sand or dirt?

just so you know those shocks dont have muh volume, so i wouldnt go tapping on the valve much or you will loose all the nitrogen
 

·
Registered
Joined
·
489 Posts
Discussion Starter · #3 ·
QUOTE (bansh-eman @ Jun 24 2008, 05:12 PM) index.php?act=findpost&pid=3623link or no link? swinger length? ride hieght? rider wieght? 300ft track? groomed track? sand or dirt?

just so you know those shocks dont have muh volume, so i wouldnt go tapping on the valve much or you will loose all the nitrogen
no link,+8, ride hight not sure, rider weight 200, 500ft track, dirt not the best.

I know about how fast they will unload so I taped it quick
 

·
Registered
Joined
·
507 Posts
500 - 650 is about normal for what you have listed. Its all personal pref but you dont want to soft like a normal shock, the idea is to keep the power down at the dirt and not allow the shock to absorb the power like most shocks do.

there are a few other factor that i didnt ask bt for te most part based off the inof thats around about the right pressure, is the shock a comp or a hillshooter? cause the comps are extremly stiff
 

·
Registered
Joined
·
489 Posts
Discussion Starter · #5 ·
QUOTE (bansh-eman @ Jun 24 2008, 05:50 PM) index.php?act=findpost&pid=3631500 - 650 is about normal for what you have listed. Its all personal pref but you dont want to soft like a normal shock, the idea is to keep the power down at the dirt and not allow the shock to absorb the power like most shocks do.

there are a few other factor that i didnt ask bt for te most part based off the inof thats around about the right pressure, is the shock a comp or a hillshooter? cause the comps are extremly stiff

its a comp I want it to asorb some. when it had 650 in it, and I sat on it it would hardly move. now when I sit on it drops about an 1 1/2 and the swinger sits a little abovr level, and it really dont give much after that point.


also if need to where could I get some nitrogen put back in it? like a local place, the the harly shop or something?
 

·
Registered
Joined
·
507 Posts
yea prety much any place that can rebuild shocks, its your standard fitting.. and its just run of the mill nitrogen. nothing special
 

·
Registered
Joined
·
489 Posts
Discussion Starter · #7 ·
QUOTE (bansh-eman @ Jun 24 2008, 07:08 PM) index.php?act=findpost&pid=3634yea prety much any place that can rebuild shocks, its your standard fitting.. and its just run of the mill nitrogen. nothing special
I just wonder if they will have a gauge that will go up to 600. I think mine now is just a little to soft.
 

·
Registered
Joined
·
507 Posts
yea they should, most shoks go well over 1k. even my old mx shocks had 600 lbs in them
 

·
Registered
Joined
·
489 Posts
Discussion Starter · #11 ·
Thanks I just might do that. I would like to find a place around here so I can take the shee there and have them fill it up and then I can sit on it and see how it feels.
 

·
Registered
Joined
·
1,363 Posts
I have my shaw at 750psi.... (+12 arm,185lbs,300ft, dirt) When I sit on it it dont move, then when I launch it it squats down about an inch..
 

·
Registered
Joined
·
489 Posts
Discussion Starter · #15 ·
QUOTE (JP374 @ Jan 13 2009, 09:27 PM) index.php?act=findpost&pid=25596I have my shaw at 750psi.... (+12 arm,185lbs,300ft, dirt) When I sit on it it dont move, then when I launch it it squats down about an inch..

I bought a fill station. I ended up with about 650 it moved a little when I sat on it and would move 2inchs or more on launch way to much but 650psi was perfect so I made a stoper so it could only travel an inch
 

·
Registered
Joined
·
767 Posts
Wow, I know the mrs. and myself arent that big, but I run about 900 psi in our rears at the track. If the swingarm moves when you lauch, you just gave up some ET. The only reason I let them move is if the track is hooking real hard and I need to let the bike give some to cushion the takeoff.
 

·
Registered
Joined
·
489 Posts
Discussion Starter · #20 ·
QUOTE (bubba297 @ Jan 15 2009, 07:07 AM) index.php?act=findpost&pid=25882Wow, I know the mrs. and myself arent that big, but I run about 900 psi in our rears at the track. If the swingarm moves when you lauch, you just gave up some ET. The only reason I let them move is if the track is hooking real hard and I need to let the bike give some to cushion the takeoff.


see are track is not like that its hard clay and with the movement on the rear shock its transfering the weight to the rear tires and you are hooking,, struts dont work to well here
 
1 - 20 of 36 Posts
Top