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PCP hand pump ( Mechanized )

Discussion in 'Anything Airgun Related' started by gedfinn, Jul 23, 2014.

  1. gedfinn

    gedfinn Posting Addict

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    Hi,
    Has anyone else made a housing & Mechanized a hand pump,
    Any pics would be nice, I have made one 12v, The reason being it can be reversed, At the moment I have to switch it Forward & Backward , ( I have not sorted out the stop/start & the polarity switching at the moment.) It stops Ok & Starts when asked, But not on its own ( Yet )
    It certainly beats pumping by hand though !

    I am sure there would be a market for this , As many PCP owners have pumps, . I might add, That the length of the pump + The 17 " Stroke length does not make it " Short "
    But stood vertically against the wall you would hardly know it was there ? Ha ha.

    I have another pump with a 1 hp motor 75% made, This is just a HP compressor, 2 Stage, 100 Psi inlet from the garage compressor, Should do 200 bar easy,

    Ged.
     
  2. mattyts

    mattyts Donator

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    I have a bottle ;)
     
  3. Littlepaul

    Littlepaul Member

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    Wouldn't Mechanizing wear the internals out very quickly as the pumps are designed to be pumped slowly with a rest between pumps to allow the internals to cool down!
     
  4. Littlepaul

    Littlepaul Member

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    In other words get a bottle!! ;)
     
  5. mmamonster

    mmamonster Pro Poster

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    I think i saw one on ebay for about a grand, think it was fx. Do a search. Atb
     
  6. Stevie Darling

    Stevie Darling Sexual tyrannosaurus

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    A few vids on YouTube:)
     
  7. jolo-bolo

    jolo-bolo Donator

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    I baught a shoebox compressor from the states.
     
  8. gedfinn

    gedfinn Posting Addict

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    I have a bottle ( Or 2 )
    I have nearly finished the compressor , I also know a number of airgunners have made there own compressor pump pump, Most look very good, But I keep looking at the handpump, You might be right , Many members have a bottle " & Yet ! " I,ll keep the Pics then,

    FX the Hand pump makers made a mechanical action for a handpump turning it into a compressor, It was reduced in length & Partially watercooled,
    As was said, There is one for sale on the BAY, £1000.
    The speed/Rate of pumping is easy to control, As is the watercooling, They were designed for 2-400cc bottles Etc.

    Just a thought, Ged.

    PS, How is the Shoebox compressor, I have read some good reviews , Thanks.
     
  9. Clubshot

    Clubshot Clubshot

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    I have respect for 300 Bar - I have seen Bottles knocked over - removing Head and Flying down Range

    I have seen Blown Bottle as my local Dive Centre that went rusty inside and blew on being filled

    My Local Dive Shop has a monster water called unit and runs off Storeage bottles slower and cooler

    Pax brought a small one for Shop - Real pain as cut's out @ 305 Bar and you have to wait to unit cools down before using and that was several £,000's

    Sure No life insurance covers you - when expermenting with High preasure Air -

    BOB/R
     
  10. darklord

    darklord Can’t beat a tx200 at 30m

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    so why would a home made half assed 3500 psi compressor be any safer. sorry it won't be or certified in the event of an accident a bottles far safer than bits cobbled together. and at 300 bar it would need to be certified and regularly inspected as its wayyyy above anything bought for home use. plus the noise would drive the neighbours potty.
     
  11. mattyts

    mattyts Donator

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    I don't see where the OP said his method was any safer than any other method of filling your gun. As far as I can see,it's just adding motion to a pump,he hasn't 'made' anything to provide the pressure to the gun,he has only provided motion to the pump which is designed to supply pressure to the gun,it's not as if it's some jumped up car compressor.

    BTW 3500 PSI is only 240 bar or there abouts,I think Shoeboxes are 4500 PSI.
     
    Last edited: Jul 24, 2014
  12. jimmyhackers

    jimmyhackers Well-Known Member

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    hm.... i use to be a large scale fridge and air con install for supermarket office block etc.

    you are gonna need some silly high psi pump. i dont think even our co2 systems went into the 1000psi's
    as above a car compressor, a shop compressor even, industrial fridge systems or anything except a specific scooba /airgun pump cant go to that pressure.

    random thought here as we used to do it with aircon etc, anyone cool or heat their bottles to get a better transfer of gas etc? we used to do it in the fridge trade to speed up de and re gassing systems?

    sorry i couldnt help spare for saying what you cant use :S
     
  13. mattyts

    mattyts Donator

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    Common practice to put bottles in a tank of water while filling to keep it cool,if it gets warm you end up under filling the bottle once it cools back down.
     

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