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nitrogen for Penske shocks

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Old Jan 31, 2005 | 09:18 AM
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Default nitrogen for Penske shocks

I just got a quote for a nitrogen bottle with regulator. Nitrogen bottle was about $120 (as expected), but they want $520 for a high pressure regulator (output pressure range is 5 - 350 psig).

Anybody have any recommendations (other than spend $520 for the regulator). What regulator do you use and how much did you spend?
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Old Jan 31, 2005 | 12:02 PM
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I can get you the specifics when I get home tonight, but the regulator definitely costs less, I recall around 110 or so. It has 2 guages, one for the bottle pressure and one to control output. A 20 lb N2 tank should be much less also, and only ~$12 per refill/exchange.
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Old Jan 31, 2005 | 06:35 PM
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The regulator that I have is a Harris model 25-500R-580 CGA that reads to 4,000 psi on the tank and regulates to 1,000 psi, and around $110-120. What's more important to have in order to get accurate pressures in the shock is a good pressure gauge designed for shocks. I have the Penske that reads to 300 psi. It's almost impossible to get accurate, repeatable pressures in the shock or canister, no matter how accurate the regulator, because of the high pressures/small volumes you are dealing with; it can vary significantly depending on how quickly and repeatably you can disengage the chuck. So you need the special gauge with the closed chamber like the Penske that allows you to overfill then bleed to within 2psi.
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Old Jan 31, 2005 | 06:53 PM
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Hey Richard! Thanks again for helping me out with the N2 on my JRZs. I'm definitely going to need to buy a setup like yours.

Are you going to be at the Buttonwillow or Cal Speedway events?
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Old Jan 31, 2005 | 07:06 PM
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Originally Posted by The Reverend' date='Jan 31 2005, 07:53 PM
Hey Richard! Thanks again for helping me out with the N2 on my JRZs. I'm definitely going to need to buy a setup like yours.

Are you going to be at the Buttonwillow or Cal Speedway events?
Definite for BW, possible for Fontana. I will probably go to Big Willow this Sat. with another group since I haven't been on track for over 2 months! I think I'm forgetting how to drive.
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Old Feb 1, 2005 | 05:18 PM
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Originally Posted by rlaifatt' date='Jan 31 2005, 07:35 PM
The regulator that I have is a Harris model 25-500R-580 CGA that reads to 4,000 psi on the tank and regulates to 1,000 psi, and around $110-120. What's more important to have in order to get accurate pressures in the shock is a good pressure gauge designed for shocks. I have the Penske that reads to 300 psi. It's almost impossible to get accurate, repeatable pressures in the shock or canister, no matter how accurate the regulator, because of the high pressures/small volumes you are dealing with; it can vary significantly depending on how quickly and repeatably you can disengage the chuck. So you need the special gauge with the closed chamber like the Penske that allows you to overfill then bleed to within 2psi.
Thanks for the info - I didn't even know that Penske made such an animal. I have gone to the Penske site and now know what you are talking about.
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Old Feb 1, 2005 | 05:30 PM
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Hey John,

I hope you got my PM.

I got my setup from Praxair. You can order online or take the part number to your local welding supply shop and they can match it.

HAR3000674



Sorry I wasn't clearer about what you needed to order!
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