HOMERTHECLOWN Posted December 26, 2011 Report Share Posted December 26, 2011 What is the nitrogen charge for a Marvin Shaw hill shooter rear shock, 260 pound rider plus 10" swing arm? Just an idea please, the previous owner said he let some nitrogen out. I did leave Matt a message at So Cal Suspensions to discuss rebuilding these for my weight and ride style. (Fat & Comfortable) Thanks Rick Quote Link to comment Share on other sites More sharing options...
Rotax Raptor Posted December 26, 2011 Report Share Posted December 26, 2011 I weigh 220 and set mine at 1000psi for the track and 700psi when I go to the dunes. Not saying thats right for everyone but it seems to work for me. Matt would know as well as anyone. Quote Link to comment Share on other sites More sharing options...
So Cal Suspension Posted December 26, 2011 Report Share Posted December 26, 2011 Rick, I got your message, but I won't be back in the shop until Tuesday, but I'll try giving you a call this afternoon on my way to San Diego. Nice to know where you work, though. I've got a suburban that might need some love here soon. Anyways, to answer the question at hand, I was going to say 750-800 for a dune bike, 1100-1150 for when you're running Olds. Quote Link to comment Share on other sites More sharing options...
HOMERTHECLOWN Posted December 28, 2011 Author Report Share Posted December 28, 2011 Rick, I got your message, but I won't be back in the shop until Tuesday, but I'll try giving you a call this afternoon on my way to San Diego. Nice to know where you work, though. I've got a suburban that might need some love here soon. Anyways, to answer the question at hand, I was going to say 750-800 for a dune bike, 1100-1150 for when you're running Olds. Thanks to the both of you for the input, Matt I will wait for your call. in the meantime, I borrowed a nitrogen tank but the regulator would only go up to 600 psi so I put in 600 and it seems real stiff, real stiff (REAR) I posted that it was a plus 10 swingarm, cause thats what the previous owner said, lets say its a plus 6-8 would that change the psi? Now the front seems real soft whats the magic # for the front? Thanks, Rick Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted December 28, 2011 Report Share Posted December 28, 2011 It also depends on the swingarm and the heigth you set your bike at , I have my shaw setup for a LSR with the bike a little low and it takes much more psi and the valving is different too. Marvin Shaw has done mine twice to get it just right. Mine has 1450psi in it and is just right for me at 230 lbsbut I have seen em with different +10 swingarms that only took 850psi. Quote Link to comment Share on other sites More sharing options...
jrmarquez.702 Posted December 29, 2011 Report Share Posted December 29, 2011 Is the swingarm a link or no link? I can't remember for sure but, I think my bikes with a link take less psi then my no link swingarms. Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted December 29, 2011 Report Share Posted December 29, 2011 Jmarq is right. With a no link it takes a lot more pressure and different valving. Quote Link to comment Share on other sites More sharing options...
HOMERTHECLOWN Posted December 29, 2011 Author Report Share Posted December 29, 2011 Jmarq is right. With a no link it takes a lot more pressure and different valving. I have a link. What about front? Thanks Quote Link to comment Share on other sites More sharing options...
badassbanshee479 Posted January 9, 2012 Report Share Posted January 9, 2012 start with like 2-300 in the front and add more if its to soft. I run 250 in my front shaws on my single a arm chassis..... Quote Link to comment Share on other sites More sharing options...
jtaylor Posted February 1, 2012 Report Share Posted February 1, 2012 (edited) start with like 2-300 in the front and add more if its to soft. I run 250 in my front shaws on my single a arm chassis..... Whats the most psi you/anyone has ran in the fronts? I have a bike thats very heavy and wondering if I need to switch to a larger body shock on the front. Edited February 1, 2012 by jtaylor Quote Link to comment Share on other sites More sharing options...
camatv Posted February 21, 2012 Report Share Posted February 21, 2012 ive put200- 400 in fronts. and up to 600. but 400 will be rock stiff. if your not using the correct filler and type of shut off valve your not going to get good pressure readings for whats in the shock. Quote Link to comment Share on other sites More sharing options...
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