1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Portable Air Compressors

Discussion in 'Camping & Outdoor Gear' started by Hltoppr, Oct 8, 2003.

  1. Hltoppr

    Hltoppr

    Messages:
    2,024
    Media:
    4
    Albums:
    2
    Likes Received:
    8
    Joined:
    Aug 29, 2002
    Location:
    Port of Indecision...otherwise Northern Arizona
    What portable air compressors are everyone using? I'm looking for a general, light use compressor to fill tires from about 15psi to 32-40 psi several times per year. Leaning towards the ARB or Outback CO2 system. Pros/Cons?

    -H-
     
  2. Beowulf

    Beowulf

    Messages:
    12,529
    Likes Received:
    52
    Joined:
    Mar 27, 2003
    Location:
    Somewhere in the foothills...
    -H-
    I have a 10# CO2 and a Truck Air 12v electric as a backup. I'm getting close to an OBA using electric compressors but I can't recommend that route yet.

    CO2 Pros:
    * Reasonably priced if you DIY. The Power Tank is a nice rig but expensive. Jody's Outback system seems to be priced right and is well thought out.
    * Quick tyre inflation using 150psi regulator.
    * 10# tank can typically do 30+ tyres (depends on size and begin/end pressures)
    * Supposedly can reseat tyres if needed.
    * Portable. I used mine w/air tools in the back yard to dismantle a wooden structure.
    * Works great with air tools. Can get a 100psi regulator as a spare and use it for air tools.
    * Can double as a fire extinguisher :D

    Cons:
    * Refilling becomes a chore and the $12/refill starts adding up.
    * If you only have one tank you end up refilling before the tank is empty...
    * or... you end up running out at an inopportune time. (I'm considering a 2nd tank)
    * They're kinda big and take up valuable space. Not so much of a problem with our 80s.
    * They can blow the safety. Fortunately mine blew in the garage with nobody in the truck.

    That's all I can think of... probably missed something.

    I would do the CO2 again.

    -B-
     
  3. cruiserdan

    cruiserdan SupportingVendor Emeritus Moderator

    Messages:
    21,820
    Likes Received:
    5,413
    Joined:
    Mar 27, 2003
    Location:
    Surrounded by Cruisers from all over the world
    Riddle me this..........


    How does a tire filled with CO2 react to temperature/pressure changes vs a tire with plain old air in it?



    D-
     
  4. Beowulf

    Beowulf

    Messages:
    12,529
    Likes Received:
    52
    Joined:
    Mar 27, 2003
    Location:
    Somewhere in the foothills...
    Nothing scientific, but seat-of-the-pants is that CO2 doesn't change much. However, I have noticed that bicycle tyres, with rubber tubes, don't seem to hold CO2 very well. I need to try this with new tubes though. As I recally, the CO2 molecules are smaller than air molecules. I notice *no* issue at all with the tubless tyres on the truck. They hold the pressure extremely well... at least as good if not better than normal air.
    -B-
     
  5. cruiserdan

    cruiserdan SupportingVendor Emeritus Moderator

    Messages:
    21,820
    Likes Received:
    5,413
    Joined:
    Mar 27, 2003
    Location:
    Surrounded by Cruisers from all over the world
    No,

    Not leaking. I'm refering to pressure changes due to temperature changes. IE, 4 matching tires, 2 with CO2, 2 with air. Cold pressure in all 4, 32 lbs. Drive like hell for 40 miles, Hot pressure?



    D-
     
  6. Scamper

    Scamper

    Messages:
    1,460
    Likes Received:
    2
    Joined:
    Mar 28, 2003
    Location:
    Somewhere in NJ
    CO2 is "bigger" than either O2 or N2 which normal air is comprised of (about 98%), so it's not a size issue with respect to leakage. CO2 will compress more easily than will O2 or N2 (it liquifies at room temperature at 625psi), but I don't think you'd notice that in a tire :D --at least I'd be really surprised. Temperature extremes would have to be quite large to notice a difference I think.

    But density of CO2 is higher than either O2 or N2, so it's possible you might "feel" a differnece in the tires. Having never done this I can't tell--have you noticed it B?

    Tom
     
  7. Hltoppr

    Hltoppr

    Messages:
    2,024
    Media:
    4
    Albums:
    2
    Likes Received:
    8
    Joined:
    Aug 29, 2002
    Location:
    Port of Indecision...otherwise Northern Arizona
    LOL, just another reason for B to get the supercharger! The tires are "heavier" with CO2!

    -H-
     
  8. cruiserdan

    cruiserdan SupportingVendor Emeritus Moderator

    Messages:
    21,820
    Likes Received:
    5,413
    Joined:
    Mar 27, 2003
    Location:
    Surrounded by Cruisers from all over the world
    Council is Badgering the witness..............


    Does it, or does it not, result in a different pressure?
     
  9. CDN_Cruiser

    CDN_Cruiser

    Messages:
    1,047
    Likes Received:
    1
    Joined:
    Mar 27, 2003
    B - How did you blow the safey? Overheating?
     
  10. cruiserdan

    cruiserdan SupportingVendor Emeritus Moderator

    Messages:
    21,820
    Likes Received:
    5,413
    Joined:
    Mar 27, 2003
    Location:
    Surrounded by Cruisers from all over the world
    The vendor over-filled his tank....... :whoops:
     
  11. Beowulf

    Beowulf

    Messages:
    12,529
    Likes Received:
    52
    Joined:
    Mar 27, 2003
    Location:
    Somewhere in the foothills...
    Hugh,
    Yep, it was overfilled by about 4 lbs. Ironically, we weighed it immediately following the fill. This was the first time I used anything but the bathroom scale and I wanted to get an accurate reading; full and empty. This was on a warm summer day with the tank laying horizontally in the cargo area (strapped down of course.) It was parked in the sun for a few hours, then I went home and parked it in the garage with the garage door closed. Went inside for a few minutes and when I came back out to the truck and opened the passenger door there was a very pungent smell. I recognized it immediately as CO2. Checked the tank and it was empty and the safety was blown. There was a slight coolness to the rubber Husky liner in the cargo area but other than the smell, and a little condensation, you couldn't tell it had discharged.

    Took it back to the place that filled it and weighed the empty tank on their scale. They had put 13.7 lbs of CO2 in it. They replaced the safety (actually the whole valve....) and refilled it at no charge.

    The bad news is that now they won't put in a full 10#; usually about 8-9#. I haven't watched the process but apparently they empty the tank, then hook it to the filler valve and put CO2 in for a while... I think they just guess at the weight. I now weigh it every time before I leave the store.

    :D

    -B-
     
  12. dd113

    dd113

    Messages:
    2,922
    Likes Received:
    2
    Joined:
    Jun 13, 2003
    Go CO2. I have a 20# tank and it works great. Much better then any compressor. I dont like the ARB compressor. For the money I would buy a cheepo JT whitney model.
     
  13. Jonathan_Ferguson

    Jonathan_Ferguson ★ is in the wrong locale SILVER Star

    Messages:
    1,003
    Likes Received:
    88
    Joined:
    Jul 2, 2003
    Location:
    Glen Waverley, Victoria, Australia
    Could use Nitrogen instead of Carbon Dioxcide.

    I got a Super Works Compresor from Dad and Mum for my 18 Birthday. :) - About $70.00 from Super Cheap Auto. :flipoff2:- Still Works. :cheers:
     
  14. Dan_J-spec_fj62

    Dan_J-spec_fj62

    Messages:
    451
    Likes Received:
    4
    Joined:
    Jun 25, 2003
    Location:
    Okinawa, Japan
    MR. Ferguson!!

    Do you have access to Nitrogen??? I do because i work with millitary aircraft and that is all we use in the tires.... much more stable than dry air ... it dosen't fluctuate with temperature as much and seems to hold pressure longer.... of course with Acft we sevice the tires every couple of days. but even if i did run nitrogen in my tires i don't see an easy way of making i portable, it doesn't liquify like CO2 and you would need a bottle that can hold at least 3000psi to hold enough gassious N2 to be usefull... not to mention really high pressure regualtor.

    i'm not saying it can't be done i have thought about converting a scuba tank to hold it and filling up at work.... but i havn't found a regualtor i can adapt to the tank

    CO2 just seems easier

    just my $.02

    dan
     
  15. Jonathan_Ferguson

    Jonathan_Ferguson ★ is in the wrong locale SILVER Star

    Messages:
    1,003
    Likes Received:
    88
    Joined:
    Jul 2, 2003
    Location:
    Glen Waverley, Victoria, Australia
    No, Though it is becomeing very common for Tyre Shops to offer it.
     
  16. Outback

    Outback

    Messages:
    606
    Likes Received:
    0
    Joined:
    Sep 17, 2003
    Location:
    Edmond, OK
    C-Dan,

    To answer your question, CO[sub]2[/sub] reacts to temperature changes much the same as the air you breathe does. Very little difference. In my experience with CO[sub]2[/sub] in all my vehicles tires, I just can't tell any difference.

    Beo,

    You need to find another place to get your tank filled!! Those guys are just dangerous! :eek:

    Jody.
     
  17. CruisinGA

    CruisinGA

    Messages:
    6,164
    Likes Received:
    13
    Joined:
    Mar 27, 2003
    Location:
    Georgia Tech
    Back to the question about on board air.....
    York 10cfm here! Endless amounts of air that can easily run air tools and fill tires as fast as my shop compressor. Good Electric compressors are waaaay too expensive, C02 would be my next choice but I'm already pressed for storage space. You can set up a york for just blowing up tires for under $100. That is cost of the York, brackets to mount and any miscellaneous hardware. I'm estimating $200 total for my setup that will include a tank, in cab guage, ARB provisions, quick disconnects F+R and automated pressure regulation. Right at the cost of a decent 12v compressor.
     
  18. cruiserdan

    cruiserdan SupportingVendor Emeritus Moderator

    Messages:
    21,820
    Likes Received:
    5,413
    Joined:
    Mar 27, 2003
    Location:
    Surrounded by Cruisers from all over the world
    Thanks Jody.

    One of our club members is a fire fighter. He uses a couple retired breathing air tanks for his air supply. He fills them at the fire station. They have something like a 4000psi compressor there :eek:
     
  19. Beowulf

    Beowulf

    Messages:
    12,529
    Likes Received:
    52
    Joined:
    Mar 27, 2003
    Location:
    Somewhere in the foothills...
    Jody,
    It's a pretty big outfit and they fill it when I bring it in. No drop-off, pick-up. No waiting. The price is reasonable ($12 or so.) They have thousands of various tanks out back and do all kinds of industrial and medical gasses. Their specialty is nitrogen and they supply it for all the businesses in the state.

    I am hoping this over-fill was an outlier and they now know me and know that I'm going to weigh the filled tank on their scale before I leave. I pretty sure it won't get over-filled again but the underfilling is bugging me a little.
    -B-
     
  20. Outback

    Outback

    Messages:
    606
    Likes Received:
    0
    Joined:
    Sep 17, 2003
    Location:
    Edmond, OK
    Yeah Beo, underfills kinda suck :rolleyes: since you can't just hook it up and "top it off". You have to vent the entire contents and start from scratch every time.

    That brings me to my CO[sub]2[/sub] tip-o-the-day:

    [glow=red,2,300]Use up as much of your fill as you can before you refill, 'cause you're gonna lose what's left.[/glow]

    Jody.
     
data-matched-content-rows-num="2,1" data-matched-content-columns-num="1,4" data-matched-content-ui-type="image_stacked" data-ad-format="autorelaxed">