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Thread: DIY Cooler: Procon fitting

  1. #1
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    Default DIY Cooler: Procon fitting

    I'm looking into a DIY TIG cooler, and want to see if I can connect a Procon pump to a motor I have. Is there a specific name for the "round shaft with a flat surface" on this pump? I want to see if McMaster or a similar outlet has a fitting for it.
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    DaveO
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  2. #2

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    can get a procon pump and motor cheap on ebay here is one for 45 buck and like 30 shipping http://www.ebay.com/itm/PROCON-PUMP-...item337b152bf2 plus the seller has a 100 percent selling score like the way the pump is mounted on motor
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    Quote Originally Posted by DaveO View Post
    I'm looking into a DIY TIG cooler, and want to see if I can connect a Procon pump to a motor I have. Is there a specific name for the "round shaft with a flat surface" on this pump? I want to see if McMaster or a similar outlet has a fitting for it.
    What you need is a shaft coupler. There are two ways to go, one is to use a solid coupler, and then the pump basically hangs on the motor. Then you use a small reaction arm to keep the pump from spinning. This is done on motors with good quality end bearings. The other way is to mount the motor and pump solidly, and use a flexible coupler between them. These are made by Lovejoy and others and deal with small amounts of misalignment. What you can't do is have a solid coupler and solid mountings. It will damage both pump and motor.

    http://www.mcmaster.com/#standard-shaft-couplings/

    I guess I forgot about belt drives, Rod.
    Last edited by Rambozo; 08-20-2012 at 01:04 AM. Reason: Update
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    Quote Originally Posted by Rambozo View Post
    What you can't do is have a solid coupler and solid mountings. It will damage both pump and motor.
    Thanks for _that_ heads-up, I'd already started walking down that road. Time to reconsider! The motor I have is set up for belt drive; maybe I'll give that a thought. The thinking through and designing and problem-solving is fun, but hard to pass up a pre-built setup like the one Rod posted.
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  5. #5

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    Here is another procon type pump, these are used for coffee machines, You can use a love joy type coupling , a chain coupling , or a flat belt flex coupling to hook to a motor.
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    Here is a version of the close coupled type used on many coolers. They are all over ebay, if you look around, I'm sure you'll find something that you want at a price you are happy with.

    http://www.ebay.com/itm/280944778653
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    Quote Originally Posted by Rambozo View Post
    Here is a version of the close coupled type used on many coolers. They are all over ebay, if you look around
    Thanks- by coincidence I'd already found that same auction. It's starting to remind me building a computer from parts... possible, and a fun exercise, but easier and cheaper to find them already assembled.
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  8. #8

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    Its much better to have the motor hook to the pump like the carbonizer setup. Here is the build I did with a carbonizer setup.
    http://www.longevity-inc.com/forum/t...er-cooler.html
    If you have a lathe you can attach the fan on the same motor for a smaller unit. I copied that from another guy's post.
    For a hobby guy building it is where it at.
    have fun
    Tom

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    Quote Originally Posted by DaveO View Post
    It's starting to remind me building a computer from parts... possible, and a fun exercise, but easier and cheaper to find them already assembled.
    I disagree. Ready built computers usually have a one part selling point like the processor, while the rest of it's parts are low end (motherboard, memory, power supply, hard drive, case). You can have all have all high quality (Faster) parts for about the same money, and a clean operating system without all the garbage/spyware that comes with a pre-installed OS. You also get to put it all in a quiet case that you like.

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    Quote Originally Posted by acourtjester View Post
    Its much better to have the motor hook to the pump like the carbonizer setup.
    Yeah, another reason not to go with belts is the pump is likely not intended to have a lot of sideways pressure on the shaft. Tom, what lathe operation did you perform to attach the fan to the opposite side of the motor?

    Also, does a system such as the one pictured require that it be completely full of fluid at all times? If the fluid level went low for any reason it seems (to my admittedly untrained eye) that the pump would have to push a combination of fluid and air. In the photo, fluid leaves the tank and has some straight up vertical travel before reaching the inlet side of the pump (assuming it is on the right as you face the label on the pump). Seems like any air in the system would collect there, and the pump would have to overcome that. Certainly not intending to be critical of your system, Tom, just trying to make sure I understand the tolerance for air, or if I'm just plain overthinking it or missing the point.
    DaveO
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    Quote Originally Posted by zoama585 View Post
    I disagree. Ready built computers usually have a one part selling point like the processor, while the rest of it's parts are low end (motherboard, memory, power supply, hard drive, case). You can have all have all high quality (Faster) parts for about the same money, and a clean operating system without all the garbage/spyware that comes with a pre-installed OS. You also get to put it all in a quiet case that you like.
    Conceded- the operating system has always been the choke point for me.
    DaveO
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  12. #12
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    Quote Originally Posted by DaveO View Post
    I'm looking into a DIY TIG cooler, and want to see if I can connect a Procon pump to a motor I have. Is there a specific name for the "round shaft with a flat surface" on this pump? I want to see if McMaster or a similar outlet has a fitting for it.
    Looks like it's called a "D-profile shaft". Although, I think I'd also just call it a "Shaft with flat".
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  13. #13

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    Here is the guy's video that I copied the motor mod
    http://www.youtube.com/watch?v=e-6YxrGU6Ok
    Take the motor apart and use a lathe to drill a 1/4" hole in the motor shaft on the other end from the pump. tac weld a 1/4" rod in the shaft for the fan to go on.
    I bought a aluminum fan from Graingers.
    The procon pump is a positive displacement type and it does not have a problem pulling water up from the tank. Any air is cleared from the circuit after a very short time. If you can get a carbonizer buy it you will get the motor, pump, some fittings, and tank from it. I had to redo the tank as shown in the picture and its SS so thats a plus.

    have fun
    Tom

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  14. #14
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    Thanks for the link- he's got a lot of good ideas going there. Not only the fan on the motor, but the heater core (still available for $26) and the way his whole setup sits on the reservoir.

    Thank also for the procon info. I'm watching a couple complete pump / motor / tank setups on ebay.
    DaveO
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