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PostPosted: Mon Mar 18, 2013 8:06 pm 
retrobike rider
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Joined: Sun Dec 02, 2007 6:35 pm
Posts: 5802
Location: Dunkeswell, Nr Honiton, Devon
I have a set, seem to be holding air, but what is the PSI I need to pump them up to?


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PostPosted: Tue Mar 19, 2013 10:18 pm 
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Joined: Sun Apr 19, 2009 9:48 pm
Posts: 355
Location: Hampshire
Hi, use to have 30's on my diablo. No manual but I have many years experience with them . Air pressure is a trial and error effort, oil viscosity also plays a big part with these forks. Start with the oil, i used a heavy weight oil due to the fact that I use to throw the jav & disc for hampshire. I set the pressure to give maxium travel without bottoming out . Once you have the right combination of air and oil they ride like a dream.


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PostPosted: Tue Mar 19, 2013 10:20 pm 
retrobike rider
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Joined: Fri Aug 08, 2008 2:36 pm
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Location: Yorkshire, England
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PostPosted: Tue Mar 19, 2013 10:49 pm 
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Joined: Sun Apr 19, 2009 9:48 pm
Posts: 355
Location: Hampshire
Sorry, heavy weight oil and 45-50psi for me with the oil slightly over filled. Oil level also has a big factor. Too little and the air compression rate will be too low and you will bottom out, too much and you will lose travel as the air will compress too much too quickly.

I took my 92 mag 30's a little further with 93 parts, you can even start playing with the preload spring!

Have fun


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PostPosted: Tue Mar 19, 2013 11:00 pm 
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Location: Hampshire
Stupid phone


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