Electric Hand Pump motor advice needed

[Dan_Br]

I am getting my first PCP gun and hand pump in two days, and I already know that I want to move from hand pumping, (67 yrs old)

I have been all over YouTube for examples, and their are many excellent ones beyond my electrical and mechanical skills. I have settled on

this type of set up

https://www.youtube.com/watch?v=uROLCyQBNk0

and need advice on the motor. He states that it is a 24Vdc 100:1 right angle drive motor (600 # in torque)

Any advice or sourcing for this appreciated,

Not sure if he means 600 ft lbs or inch lbs or it that is over kill.

Brief google search finds motors very expensive, but I might be looking at wrong ones.

If the motor version is too expensive, I do have a plan B in mind that uses no motor, but I will need to mock up a proof of concept.

thanks in advance

dan

 

[AirGunnerOK]

I just love the ingenuity and pragmatism of mankind. I remember looking years ago at all the ways to refilling a PCP airgun. I was certainly intrigued by this type of setup.

However, by the time you purchase all the material to create this type of air delivery system, Air Venturi will have their Nomad hitting the streets.

I'll go out on the limb a state that the Nomad would be an easier and more durable solution than to automate a hand pump. Uses 110v or a 12v car battery. Made specifically to air up an air gun directly. Fast refills every time. Self contained unit. Very light and extremely portable. And it's only $499...going to be a hot seller.

Not trying to dissuade you from your project, just pointing out a better option to think about.

Happy Shooting!

 

[Stefanjan]

Mybig concern with these "electric" hand pumps is the real possibility of overheating the pump. Even hand pumping with a 1 second pause at the top and bottom of the stroke made my pump hot after 50 to 60 pumps. I watched the videos and thought no way those pumps are holding up for any length of time. As for a motor i would start checking for a used or junked washingmachine motor. Shouldnt be any more than a couple bucks (heck maybe even free if you can find sommeone throwing one out- rarely are the motors burned out). I would think belt driven gear reduction should work just fine. Pretty sure there is a bicycle driven one floatingaround on youtube.

 

[Dan_Br]

I just love the ingenuity and pragmatism of mankind. I remember looking years ago at all the ways to refilling a PCP airgun. I was certainly intrigued by this type of setup.

However, by the time you purchase all the material to create this type of air delivery system, Air Venturi will have their Nomad hitting the streets.

I'll go out on the limb a state that the Nomad would be an easier and more durable solution than to automate a hand pump. Uses 110v or a 12v car battery. Made specifically to air up an air gun directly. Fast refills every time. Self contained unit. Very light and extremely portable. And it's only $499...going to be a hot seller.

Not trying to dissuade you from your project, just pointing out a better option to think about.

Happy Shooting!

thanks, I might look into that, was hoping for cheap initially.

edit: now you have got me interested in the Nomad, I am going to give your name to my wife . For $499, I would hope it would last many years.

 

[badammo]

FX had a unit like this, I still have one in the shop. It used a reservoir of antifrreeze coolant and reciprocating pump attached to the pump base. There was a copper tubing coil in the motor fan housing. 

The unit worked ok but has issuses with wearing out the orings.

 

[Dan_Br]

Mybig concern with these "electric" hand pumps is the real possibility of overheating the pump. Even hand pumping with a 1 second pause at the top and bottom of the stroke made my pump hot after 50 to 60 pumps. I watched the videos and thought no way those pumps are holding up for any length of time. As for a motor i would start checking for a used or junked washingmachine motor. Shouldnt be any more than a couple bucks (heck maybe even free if you can find sommeone throwing one out- rarely are the motors burned out). I would think belt driven gear reduction should work just fine. Pretty sure there is a bicycle driven one floatingaround on youtube.

thanks, what is a bicycle driven motor. I will look for junked motors. I looked at many different youtube vids of auto hand pumps, some folks said their pump only increased 17 deg etc. My crazy idea is to set it up like I would for a motor and use a long hand lever, maybe 4 feet from pivot point to make pumping less strenuous. Not sure if it would work, any thoughts?

dan

 

[Stefanjan]

I looked for the youtube vid I saw but haven't found it yet. Guy had the pump attached via several linkages to a bicycle rear hub and pedaled. It was several years old and had very fewviews and only a couple comments. I recently had my tablet crash and somehow lost my search history.