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Thread: pump idea!

  1. #1
    Registered Member gixerkarl's Avatar
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    pump idea!

    ive got a couple of spare pumps lying around and i was thinking of trying to strap 2 together to make a super pump.....what do you think?

  2. #2
    PETER LYNN TEAM RIDER Brand Rep carl-the-bullet's Avatar
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    side by side or end over end?

  3. #3
    penmaenmawr pete isk57's Avatar
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    check out
    WORKBENCH: The Ultimate Kite Pump : The Kiteboarder Magazine
    full instructions for the mega pump.
    The light wind king

  4. #4
    Wants a Vegas Dubs's Avatar
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    Quote Originally Posted by isk57 View Post
    check out
    WORKBENCH: The Ultimate Kite Pump : The Kiteboarder Magazine
    full instructions for the mega pump.
    That looks good, but wouldn't side by side be better so it can be strapped to a kite bag, be more stable and look cooler?
    I <3 thekiteco

  5. #5
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    Wouldn't it take twice the energy to pump it and the same amount of time because of the longer stroke.
    A shorter pump allows you to put your body weight into it. The taller pump would require mostly your arms to do the work.
    Not convinced.

    flying genetrix hydra 7m-9m

  6. #6
    Registered Member cliff's Avatar
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    Nor am I.

    That mega pump is Blue Peter technology... just a normal pump in a stuck in a tube so you lazy gits don't have to bend down!
    In the bag:

    Lavabread ac mae rhai trôns glân

  7. #7
    Registered Member gixerkarl's Avatar
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    i had a little play with 2 pumps this morning and i recon it'll be quite easy to do,and if it doesnt then hey ho,i'll have knackerd a couple of hoses that i dont use anyway.

  8. #8
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    Go for it. I had an idea to use a co2 4oz bottle used in paintball matches to fill the kite.

    flying genetrix hydra 7m-9m

  9. #9
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    side by side pumps will make it harder to get high pressure, and you'd knacker them faster as they would never be perfectly axially aligned.
    end to end ones would require some impressive sealing techniques and a very good finish on the inside of the join for the piston to slide over smoothly, plus you'd need the shaft to be twice as long, so at full extension it would be uncomfortably high

    if it ain't broke...
    JN, Ozone, CKB

  10. #10
    Registered Member plummet's Avatar
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    The limiting factor is the orriface size at the kite end. you can only get so much flow through that end connection!

    I was going to set up a 9kg lpg bottle as a resivour precharge it and use that as the pump. To be safe you probably want a relief valve set a 9psig.

    but its probably more of an arse lugging the lpg bottle back and forth than it is pumping the kite.
    In my bag of kite toys.
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  11. #11
    Registered Member gixerkarl's Avatar
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    afro..thanks for the comment..i see your point about the wear. dont get me wrong here i have no intention of selling/marketing these,i just thought it would be fun to try! Just out of intrest why would you suggest that it would be harder to get a high pressure? and tbf i think pumping up 12+m kites with a toy pump is sort of "broke"

  12. #12
    Registered Member gixerkarl's Avatar
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    Quote Originally Posted by plummet View Post
    The limiting factor is the orriface size at the kite end. you can only get so much flow through that end connection!

    I was going to set up a 9kg lpg bottle as a resivour precharge it and use that as the pump. To be safe you probably want a relief valve set a 9psig.

    but its probably more of an arse lugging the lpg bottle back and forth than it is pumping the kite.
    another good point!

  13. #13
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    pressure = force / area
    two pumps is twice the area (pistons) so you'd need to double the force (pumping effort) to get the same pressure.

    (hence bicycle pumps, which need to achieve high pressure, are skinny)
    JN, Ozone, CKB

  14. #14
    Registered Member gixerkarl's Avatar
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    ah ok,what about pumping up on 2 and then a shut off to get full pressure?

  15. #15
    penmaenmawr pete isk57's Avatar
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    has anyone tried the battery operated pumps you can get they look like a cordless drill without the chuck .
    The light wind king

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