Im looking into a compressor for the purpose of airing up 37s. The Viair 450P 45043 looks to be the least expensive. Is the ARB two stage necessary for 37s and worth the cost difference from the Viair? Any other options? I like to do things right the first time to save money not upgrading in the future.
On board air
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jzweedyk
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I have the twin ARB in both my Raptor and Jeep (the Jeep has 40" tires). It is expensive, but I think worth it. You can do a tank, but it only helps a little. I have one in the Jeep, but not in the Raptor. The ARB has a built-in relay so you can use the up fitter switches to turn it on. I use number 5.
keep in mind when getting a compressor that you want to look at the duty cycle and cfm. 100% duty cycle means it can run continuous. the downfall is that its slower. the cfm is cubic feet per minute. how much air it can push through. for a single vehicle you can get away with a 33% duty cycle most of the time. a 33% duty cycle basically means after 20 min, the compressors need to cool down for 40 min. they tell you max run time. mine are 33% duty cycle but i have 4 compressors and 10 gallons of air. i push 10cfm and can air up 6 trucks from 20 to 44psi in the 20min before the cool down time. my system is overkill but as a support truck for the ROC events, a lot of people dont have air so i planned it to be able to air up other trucks
Thanks for the response Noah, I wasn’t sure if you were still around.
Kahuna
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HPA or Powertank not an option? Much faster... unless you have 4 compressors!
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Yes faster as a single air but the OP asked about on-board not portable air. Plus HPA, Powertank or Smittybilt all cost everytime you need to fill. On-board refills do not
Kahuna
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Thanks for clarifying for me. Should I self flagellate or is shutting my fool mouth adequate?
A tank is looking like a solid option
im always here. not the post ***** i used to be though. haha.
tanks serve their purpose and very well, but as rick stated, you have limited supply. depending on how often you use it, it may or may not be what you want. since i air down up multiple times a year, a tank isnt the best option for me. however it could work out well for you.
also keep in mind, air compressor companies will rate their cfm under no load (no pressure in the tire for your application) some compressors drop significantly under 20-40psi. and drop more at higher psi, but since this is only for tires, the higher numbers wont matter. just the 20-40psi cfm rating
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