Tired of pumping (video link updated)

[shorty]

RMM,
Are you getting any stalling on the motor at 600" # output. I would have thought we needed a minimum of 1200" # to do the job.

To get past the cost of building a dc power supply I plan on connecting 2 12v batteries or get a cheap 24 v battery and keep the battery charger on until I can figure out how to build the power supply on the cheap.

Finally found a 24vdc right angle drive motor with a 100:1 gear box for under $100. That should put it just around 600" # at 30 rpm.

[RMM]

RMM,
Are you getting any stalling on the motor at 600" # output. I would have thought we needed a minimum of 1200" # to do the job.

To get past the cost of building a dc power supply I plan on connecting 2 12v batteries or get a cheap 24 v battery and keep the battery charger on until I can figure out how to build the power supply on the cheap.

Finally found a 24vdc right angle drive motor with a 100:1 gear box for under $100. That should put it just around 600" # at 30 rpm.

No stalling even up to 3000 psi with a 40:1, .67 HP input (my motor is .75 hp). But the same 40:1 will not work with a 1/2 hp @ 110 vac but will work @ 220 vac (as I've heard).

I'm interested in your build and hope it works for you.  I kinda went in the backdoor way and tried a 12VDC ATV winch @ 136:1 but the duty cycle and amperage required wouldn't take it to even 2000 psi without starting to stall.   Your 24 VDC @ 100:1 has possibilities. 



As a matter of fact my first attempt to ease the pumping was this.  I found out I just don't like pumping,   I'd rather spend my time shooting.   

[shorty]

Thanks RMM for all the info.

I am very happy to say that I won the bid on EBay for the 1/2 horse 24Vdc right angle drive motor 100:1. I got it for $2.51 plus $24.00 shipping. Holly cow, what a deal. Definitely have to stick with the batteries as power for now. The "dang" motor draws 23 amps.

I guess I will have to move this post soon due to the build.

[RMM]

Thanks RMM for all the info.

I am very happy to say that I won the bid on EBay for the 1/2 horse 24Vdc right angle drive motor 100:1. I got it for $2.51 plus $24.00 shipping. Holly cow, what a deal. Definitely have to stick with the batteries as power for now. The "dang" motor draws 23 amps.

I guess I will have to move this post soon due to the build.

Nice buy!!   Keep us posted on your build.  Inquiring minds would like to know.   

[toine]

This is the system I'd build if I could figure out those rather large sized pulleys.

[Sfttailrdr46]

  That is an ingenious build I would love to shake that mans hand. 

[avator]

Interesting stuff. The Fire Dept is less than a mile from our house. Chief told me to make a small donation to them once a year and he would fill my tank whenever. 100 cf @ 3300psi fills our 3 FD-PCP rifles about 330 times. I don't think we have the need for anything like this yet. I like learning about it though.

[Wheelchair Bob]

I see the very nice conversion to a powered pump, but the glass jar full of desiccant is a bomb waiting to explode at 3K PSI.  I would at the very least slip it into a PVC tube sleeve kind of thing or ideally replace it with DOM Stainless that had been Sanitary welded with Tig.  Just wouldn't want to be standing anywhere close if the lid blows out or the vessel fails.  All it would take is an intake valve failing to properly close and boom, ya got a redneck grenade....Just saying, and I certainly apologize and do not wish to dampen your enthusiasm or efforts thus far.

Wheelchair Bob

[Monkeydad1969]

I see the very nice conversion to a powered pump, but the glass jar full of desiccant is a bomb waiting to explode at 3K PSI.  I would at the very least slip it into a PVC tube sleeve kind of thing or ideally replace it with DOM Stainless that had been Sanitary welded with Tig.  Just wouldn't want to be standing anywhere close if the lid blows out or the vessel fails.  All it would take is an intake valve failing to properly close and boom, ya got a redneck grenade....Just saying, and I certainly apologize and do not wish to dampen your enthusiasm or efforts thus far.

Wheelchair Bob

Good chime in---never know what can happen when it comes to air pressure.

[RMM]

This is the system I'd build if I could figure out those rather large sized pulleys.

If you wish the pulley setup information get in touch with the builder @ seepdrazer78@hotmail.com 

I came up with the gearbox/motor searching the internet by a gentleman (he had a pulley system as his first) whom had to work with space constraints (such as I), built the gearbox/motor setup then graciously shared his work on Yellow thus took the calculation work out of it for me .   Please note I have paid it forward. 
 
I hope any or all the info provided helps you in your decision.

[RMM]

I see the very nice conversion to a powered pump, but the glass jar full of desiccant is a bomb waiting to explode at 3K PSI.  I would at the very least slip it into a PVC tube sleeve kind of thing or ideally replace it with DOM Stainless that had been Sanitary welded with Tig.  Just wouldn't want to be standing anywhere close if the lid blows out or the vessel fails.  All it would take is an intake valve failing to properly close and boom, ya got a redneck grenade....Just saying, and I certainly apologize and do not wish to dampen your enthusiasm or efforts thus far.

Wheelchair Bob

The desiccant jar is on the intake side (atmospheric pressure), not the pressurized side (3000 psi) thus nary a problem.  But your observation serves as a primer of what not to do.

[shorty]

WOW. I received the motor yesterday. The motor looks brand new. So, I have been thinking about mounting the pump the opposite of everybody's design meaning turning the pump up-side down so that the output of the pump is on top. This way I can make a gun holder on the pump frame so I don't have to lay the gun on the ground like everyone else without extending the feed line from the pump.

Can anyone think of any reserves not to pump upside down?

[RMM]

WOW. I received the motor yesterday. The motor looks brand new. So, I have been thinking about mounting the pump the opposite of everybody's design meaning turning the pump up-side down so that the output of the pump is on top. This way I can make a gun holder on the pump frame so I don't have to lay the gun on the ground like everyone else without extending the feed line from the pump.

Can anyone think of any reserves not to pump upside down?

I would think the arm swing and keeping the hose from tangling up in the arm and or kinking the hose would be a major problem. 

[shorty]

I mean the pump completely upside down. The motor (Pump handle side) and the rotation would be on the bottom instead of the top.

[RMM]

I mean the pump completely upside down. The motor (Pump handle side) and the rotation would be on the bottom instead of the top.

You will have to take in careful consideration the stiffness of the fill hose in any position you mount the pump, it ain't flexible.

[shorty]

Almost done. I am having a couple strength issues at the crank connected to the motor. Just need to reinforce a couple things and it looks like bobs your uncle. I did do a trial pump with it using a 12V dc car battery and was able to pump from 2000psi to 2700 psi nice and smoothly at 15 rpms. Motor is super strong, not stalling at all. Had to stop there before something broke.

Mounting the pump upside down really seems to be a good idea for me. Just need to make a holder for the gun on the stand.

[shorty]

Pic of pump

[RMM]

Pic of pump

Nice job!  I hope you get the safety bugs ironed out.  I myself figured around 2Kpsi up to 3Kpsi is when things really need to be beefed up. 

[shorty]

Thanks RMM. Doesn't look pretty and never will but should work just fine.

I think I figured out a cheap power supply now. Supposedly you can take a desktop PC power supply and turn it into a regulated power supply that should be capable of 20 amps at 12vdc. Looks like they only go for $10 to $20 on EBay.

Steel was less than $50 , motor was less than $30, and power supply should be around $15. Not bad on cost and actually not to bad on the build. I truly have no idea why anyone is not building these contraptions and selling them here in the US on the cheap.

[RMM]

Thanks RMM. Doesn't look pretty and never will but should work just fine.

Function over form, I am.

I think I figured out a cheap power supply now. Supposedly you can take a desktop PC power supply and turn it into a regulated power supply that should be capable of 20 amps at 12vdc. Looks like they only go for $10 to $20 on EBay.

Interesting.

Steel was less than $50 , motor was less than $30, and power supply should be around $15. Not bad on cost and actually not to bad on the build. I truly have no idea why anyone is not building these contraptions and selling them here in the US on the cheap.

Someone has to be first and if it all comes together for ya you just might be the first.  Do you have an infrared thermometer?  It might come in handy monitoring the power supply so you don't let the smoke out.  Lucas, The Lord of Dark says.