Which air compressor?

[pugslyyy]

You have 19.5's don't you? How long does it take to go from 40 to 90?

90 is easy. It's getting to 120 that's the challenge.

When I'm not traveling I usually just use a CO2 tank, much quicker.

The issue I run into is that my target PSI is right at the max that I charge my pressure tank to, so I sometimes just have to short the pressure switch to make it pump up enough.

 

[alan]

We just got a shipment of these in yesterday,12v or 24v available 220lpm 2.5HP oil less design.

 

[SkiFreak]

Got some more specs on this unit Alan?

 

[pugslyyy]

yes, looks very interesting. What's the duty cycle? Adjustable pressure cutoff or fixed?


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[tgreening]

I cant remember the maker, or if its even still in production, but one of the most robust electric compressors I ever saw was a 12v DC motor driving a York. The proper York is about 10 cfm @90 psi as I recall, at around 3000 rpm (compressor). I'm sure it was most likely a power hungrry setup, but as far as I can tell it pretty much spanks most of the electrics out there. Never actually used one, but have used them in the engine driven setup and loved it. CO2 tanks are probably faster, but on more than one occasion I've tossed people a line when their tank went dry.

Thats the biggest problem with co2. The tank maintains a fairly steady pressure till all the liquid is gone, then it drops off fast and you're done. Short of weighing your tank you dont really know what you've got left till its too late.

 

[pugslyyy]

I cant remember the maker, or if its even still in production, but one of the most robust electric compressors I ever saw was a 12v DC motor driving a York. The proper York is about 10 cfm @90 psi as I recall, at around 3000 rpm (compressor). I'm sure it was most likely a power hungry setup, but as far as I can tell it pretty much spanks most of the electrics out there. Never actually used one, but have used them in the engine driven setup and loved it. CO2 tanks are probably faster, but on more than one occasion I've tossed people a line when their tank went dry.

Thats the biggest problem with co2. The tank maintains a fairly steady pressure till all the liquid is gone, then it drops off fast and you're done. Short of weighing your tank you dont really know what you've got left till its too late.

Are you thinking of Trailhead?

Yorks are air conditioning compressors. Their 'secret sauce' is that they are externally lubricated, which makes them suitable for air as well as freon. They work really, really well and can be either engine or electric motor driven.

The most desirable application is engine driven, using an electric clutch to engage/disengage (just as if you were using it for air conditioning). You can also use a winch motor to drive it (winch motor is preferable to a starter motor because it is higher duty cycle).

 

[alan]

yes, looks very interesting. What's the duty cycle? Adjustable pressure cutoff or fixed?


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Hi, vented they are 100% duty cycle, pressure cut off is fixed but not hard to change the switch to adjustable, they work out at about 7.2 cfm, i have been selling the oil filled model for years with no problems.

 

[pugslyyy]

Hi, vented they are 100% duty cycle, pressure cut off is fixed but not hard to change the switch to adjustable, they work out at about 7.2 cfm, i have been selling the oil filled model for years with no problems.

That is very nice. I have the ExtremeAire which is 4 cfm so that's quite a chunk more.

My issue is that I like to run the pressure high - but at altitude need to be able to dial it down because the compressor really struggles to keep the tank at 120psi when the air is thin.

 

[fireball]

Has anyone compared the extreme air to the ARB twin? At $415 you're most of the way to the ARB, and the ARB is a bit smaller.

http://www.extremeoutback.com/product/8/ExtremeAire+12+Volt+Compressor+Part#+007-000.html

 

[pugslyyy]

Has anyone compared the extreme air to the ARB twin? At $415 you're most of the way to the ARB, and the ARB is a bit smaller.

http://www.extremeoutback.com/product/8/ExtremeAire+12+Volt+Compressor+Part#+007-000.html

You're right. I still have a hard time thinking of ARB as a serious compressor maker since their early ones were really just intended to drive the air lockers... but their new ones are very nice.

 

[yabanja]

PUMA PD-1006 ~$225.00
100% duty cycle
I have owned and used one for 8 years and over 100 hours of run time trouble free

I just ordered one of these this morning. Planning on plumbing an additional 8 gallon tank into the system. Thanks for the feedback on this!

Allan

 

[Mock Tender]

Well since I didn't hear anyone claim a clear cut winner- I decided to try the middle of the road for now. I got a Viair 450P Auto. I will report back when I get a chance to try it out.

 

[tgreening]

If we're supposed to be declaring a winner, I'm going to go for the converted York. You'll hard pressed to find a traditional electric that will outmatch it.

 

[GR8ADV]

Well since I didn't hear anyone claim a clear cut winner- I decided to try the middle of the road for now. I got a Viair 450P Auto. I will report back when I get a chance to try it out.

I will be interested in your review. I read that the 450p is only about 1.66 CFM Free Flow @ 0 PSI? That is a big step down from the two front runners at just over 6 cfm. I think they are in the range of 2.7 cfm at 100 psi. Any idea how long it would take to go from say 50 to 90psi with the VIAIR?

 

[Mock Tender]

GR8ADV- I hear what you are saying- but how often an I filling up these tires? I will be in this rig pretty much full-time- so 30 minutes here and there hardly makes a difference. Week-end warrior- I will be bringing the entire pit-crew with me. Funny, what being on a blue-water sailing cat for 5 years does to your "hurry-hurry".