Skip to toolbar

3200psi air source

Home Forums AirForce General Chat 3200psi air source

Viewing 14 posts - 1 through 14 (of 14 total)
  • Author
    Posts
  • #1797
    shrpshotr28
    Participant

    anyone have any expedrience with one of these?

    http://cgi.ebay.com/3-5-CFM-Stewart-Warner-Compressor-3200-psi-1001176_W0QQitemZ300128982299QQcmdZViewItem

    thinking this might be a good alternative to the more expensive fx unit and rated for continuous use (ie filling large tanks)

    Price looks like a good deal

    thanks

    #36374
    shadoh
    Participant

    Looks like OLD military surplus of some kind. He says it comes with an engine to power it and then also says he can help you hook it up to a new Honda motor. That may point to it not being a good or reliable motor or be so old you cant get parts for it. If you look below he also sells this compressor without motors for 650. Maybe one of those and a brand new motor would be a better choice?

    #36377
    cygnus-x-d82
    Participant

    thats a nice find and definatly cheap…..shame its just 3200 psi that means the scuba tank will run low fast…of course filling directly to the gun is a possibility

    #36384
    shrpshotr28
    Participant

    not too worried about the motor, supposedly by research 800-1000 hour service live per mil spec, but basically considered disposable if it breaks. Read on dive forums of being able to tweak high pressure cutout to about 3800+ psi, at what expense in longjevity who knows. was thinking more like using the pump w/ about a 2hp electric motor or the 5.5hp honda clone that HF sells for $169.00. Main thing is durability of the pump. so possibly 3500 psi, portable, and enough volume to fill large tanks/portable cf bottles for under $1000 total. seems like it would be a bargain setup vs. one of the “electric hand pumps” rated flow would fill an empty 80cf tank in about 25 minutes so going from 2500 to full should be no big deal.

    #36387
    martin777
    Participant
    quote Shadoh:

    Maybe one of those and a brand new motor would be a better choice?

    I emailed them asking what all the stuff needed to make a complete
    unit would cost (I have motors).
    I know the main air compressor rebuilder here and parts shouldn’t be a problem for me. 8)

    #36388
    shrpshotr28
    Participant

    please post what you find out

    good luck. It’d be a few weeks before I can even think about funding one of these but wanted to see what everyone else thought.

    #36391
    futureweapon
    Participant

    compressor only $650

    http://www.protecair.com/

    click on specials

    #36399
    shrpshotr28
    Participant

    6.5hp horizontal shaft motor, harbor freight, 129.00 (honda clone)

    #36448
    wvanryper
    Participant

    > anyone have any expedrience with one of these?
    >
    It’s supposedly a flamethrower compressor. I have one but
    haven’t used it for a few years. However, it worked well when I did and
    it was well worth whatever I paid.

    I bought it after going back and forth on the FX compressor. The latter
    had just become available and was selling for something like $1100, quite
    a bit more than I wanted to pay. I’m now glad I decided on the Stewart
    Warner. It’s a real compressor–the FX is just a powered hand pump. Simply
    in terms of price/performance the SW blows the FX away. More than that,
    the SW is much better designed and better built–simple, rugged, and
    so on–what you’d from mil spec stuff designed to be beaten on in
    the field.

    I, too, was sceptical of the motor that was built for it, and thought I’d
    buy just the compressor, add a 5.5 hp horizontal-shaft motor, and
    build my own frame. However, no bare compressors were available at the
    time and I wound up with the complete package of compressor, frame, and motor.

    On paper the motor seems underpowered, but mine clearly puts out
    a lot more than spec. Rumor has it that SW already had this motor in
    production before it bid on the contract for the compressor unit, and
    was able to lowball on cost and time to delivery even though the
    motor was more powerful than necessary to meet the minimum spec.
    In any case, it worked well enough that I never felt a need to replace it.

    Not too long ago Protecair was selling this same motor for $35, and
    the frame is pretty nice and certainly convenient. What I’m saying is
    that if it’s not too much more money, the original pancake motor
    may work well enough already.

    Another rumor has it that someone is selling a 4500psi compressor
    based on this unit. It might even have been Protecair. As far as I
    can tell, the compressor itself is not limited to 3200 psi or whatever
    is advertised. The limiting factors are the fittings, tubing,
    and oil trap (the can attached to the frame in the pictures), and
    overpressure valve. I ran mine to 3600-3700 psi to test hoses
    and fittings several times without any problems. I’m sure it could
    have gone higher, but I didn’t want to push the motor.

    The outlet is at the top of the oil trap (the aforementioned can), which
    is tapped for the same thread as a flare fitting. I forget what size, but it’s
    a standard thread and adapters to 1/8 NPT and thus to 1/8 or 1/4 BSP
    can be found. However, it might be better to use 5000-6000 psi rated
    stainless, so if Protecair or whomever has something already made up,
    you could save yourself a lot of aggravation by buying from them.

    What else?

    — You’ll need a special mil spec oil or a close equivalent,
    and as with all compressors like this you will have to change it on a
    usage-based schedule.

    — As I mentioned above, the original motor might have enough
    power for your use. It wouldn’t hurt to have more, especially if
    you’re planning on running it to higher psi, but the main reason to
    change out the motor is convenience–electric start, electronic ignition
    and so on–that comes with anything you’re likely to buy today.

    — My SW came with mil manuals for both the motor and compressor.
    Diagrams and operation and maintenance instructions are decent. Parts
    are listed, but not in any way that’s useful for finding
    off-the-shelf replacements, so you might have to rely on surplus places
    like Protecair.

    — The big cost in buying just the compressor and DIY is the
    oil trap/filter/separator, which you’ll definitely need. This of course
    is on the high-pressure side, so it’s not just something you can replace
    with parts from the hardware store.

    Well, that’s all I can think about for now. If you have questions
    about the unit just ask.

    One of the regulars on the Yellow Board has the same unit,
    posted a picture in the last week or so, and may be another
    source of information and perspective.

    William

    #36449
    shadoh
    Participant

    Great write up. Lots of info.

    Thanks

    #36454
    shrpshotr28
    Participant

    thanks and excellent info. think this might be a good way to go. like that it is a compressor and not a “electric pump”. Time to consult the financial manager. SHOP needs a new compressor. Definitely couldn’t get away with “i need 800.00 for a compressor so i can shoot my airgun”

    anyone else have any input?

    #36455
    shrpshotr28
    Participant

    william, I forgot to ask, do you still have and use yours?
    if not, reason for getting rid of it?

    thanks

    shrpshotr28
    Don

    #36489
    martin777
    Participant

    Here’s an email I sent them—>protecair@aol.com
    “I have a new 5.5HP Honda engine that needs to be put to use.
    I shoot a PCP air rifle that requires 3000 PSI air and was wondering
    what it would cost me for everything I need to make a complete
    unit (minus engine and misc.fittings)?”
    REPLY–>
    “Thanks for the inquiry. This compressor requires a 3/4″ tapered shaft.
    You will need the following:
    Compressor pump: $650.00;
    Water separator with pressure relief and drain: $189.00;
    Frame: $50.00
    Best regards,
    Marge”

    It might be worth it to buy a complete rig for 950 (manual included).
    Get a can of gas/rope and give’r hell! 8)

    #36528
    wvanryper
    Participant

    > william, I forgot to ask, do you still have and use yours?
    > if not, reason for getting rid of it?
    >
    I still have it and plan to get it running again “soon”. I put
    it and the rest of my shooting stuff in storage about eight years
    ago when I took a job that required me to stay in Massachusetts
    much of the time.

    When I bought the SW the normal thing to do was to use
    1/4 inch SCUBA hose and fittings. Someone I knew needed a
    high-pressure setup, and I gave them what I had on the
    SW because I wasn’t using it. Basically, the compressor needs to
    be set up again, which this time I’ll probably do with 1/8 inch hose
    and quick connects and whatnot.

    The SW looked fine when I got it back from where I had it
    stored (sealed in plastic, oil in the spark plug hole, etc.), but
    it was already too cold to mess around outside so I haven’t
    tried to start the engine yet. Maybe when it gets just a little
    warmer…

    William

Viewing 14 posts - 1 through 14 (of 14 total)
  • You must be logged in to reply to this topic.