How To BOOST the PUMP!

[caniborrowsomeammo]

Boosting works but the Freedom 8 works even better

My buddy tried this the other day as he has a shoebox. We were only about a 1/4 mile from the house and he had at least 1000ft of extension cord......for some reason my Benji Pump was working but he could not get his shoebox to fill his gun.

Too much voltage loss with that length of extension cord. I would suggest he buy a Honda EU2000i generator to run the Shoebox

[Sfttailrdr46]

Boosting works but the Freedom 8 works even better

My buddy tried this the other day as he has a shoebox. We were only about a 1/4 mile from the house and he had at least 1000ft of extension cord......for some reason my Benji Pump was working but he could not get his shoebox to fill his gun.

If you do not feed the Freedom 120 psi from a shop compressor you will die of old age before you can fill a guppy tank from 2900 to 4500 psi . You need the shop compressor to act as stage one of the system and the Freedom 8 provides stages 2 & 3. And even running 1000 ft of 00 gauge wire huge electrical losses so yes a portable generator is the better way to go

[BigTinBoat]

If you do not feed the Freedom 120 psi from a shop compressor you will die of old age before you can fill a guppy tank from 2900 to 4500 psi . You need the shop compressor to act as stage one of the system and the Freedom 8 provides stages 2 & 3. And even running 1000 ft of 00 gauge wire huge electrical losses so yes a portable generator is the better way to go

I was just making a point about the "portability" of a hand pump vs being "tied" to the electric with a compressor.........each has it's own merits, which a lot of compressor owners fail to realize, and it doesn't matter at all what size wire used as 1000ft of wire will carry ZERO current at a 1/4 mile.....which is 1320ft 

[Sfttailrdr46]

  Former Navy ET and my only point was that a portable generator was a better choice than 1000ft extension cord and if in the boonies a good hand pump is a smarter choice for PCP rifles. Especially if you are talking hunting then I prefer to travel light because whatever you carry in you will also carry back out and if you are successful like Nomadic Pirate a 300 lb wild pig can be darn heave even if dressed out

[BeltFedEd]

...about a 1/4 mile from the house

...1000ft of extension cord....   

he could not get his shoebox to fill his gun.

Lets see trying to run a shop compressor and a shoebox pump together on one extension cord at a very long distance.
Can you say, "voltage drop"?  You're starving the motors for power.

Better not try that too many times, you can up burn up the motors.

[Pellgunfun]

I wonder how thick the cable would have to be :-)

Please, no one take the time to calculate that, as it was just me being silly :-)

If I was a mile from home, and out of air, then that means I've had a good time shooting.  I'll just go home and eat a wonderful Dagwood sandwich while my rifle refills :-)  That way both my belly, and the rifle are topped off for another round.  Hehe.

[c2k5]

...about a 1/4 mile from the house

...1000ft of extension cord....   

he could not get his shoebox to fill his gun.

Lets see trying to run a shop compressor and a shoebox pump together on one extension cord at a very long distance.
Can you say, "voltage drop"?  You're starving the motors for power.

Better not try that too many times, you can up burn up the motors.

Not only does common sense say not to do that, who the heck wants to roll up 1000ft of extension cord?

[Sfttailrdr46]

  BINGO  ROFLMBO !!!

[Pellgunfun]

Man, I'll be so glad when they come out with wireless power :-)

We have that right now, but I think it's called Lightening.

[BeltFedEd]

If your vehicle is going to be close by just get a power inverter to run your stuff.  Make sure to get one that's big enough to run both.  A small portable generator is an other option.

Thinking about it again, if your buddy already has a shoebox it's about time he at least gets a Guppy bottle to be lite and mobile in the field.

who the heck wants to roll up 1000ft of extension cord?

Not me! Heck, I won't buy a cord longer than 50ft long, those 100's get to be a pain.

[jenora]

Great write up. I did the same it was easy to do with parts from harbor freight and ace hardware. My savings in strokes are similar. The one thing I'd do is change to micro bore lines as Joe Brancato suggests. A lot of effort goes into pressurizing the line from the pump to the gun reservoir. And a lot of air loss when you depressurize to disconnect.

[n2omike]

Great write up. I did the same it was easy to do with parts from harbor freight and ace hardware. My savings in strokes are similar. The one thing I'd do is change to micro bore lines as Joe Brancato suggests. A lot of effort goes into pressurizing the line from the pump to the gun reservoir. And a lot of air loss when you depressurize to disconnect.

Do you know what the fitting size is on the Benjamin pump...  and if there is a product marketed as a direct replacement for the standard hose on this pump?

Thanks!

[caniborrowsomeammo]

[

Do you know what the fitting size is on the Benjamin pump...  and if there is a product marketed as a direct replacement for the standard hose on this pump?

Thanks!

1/8 NPT   and Joe B microbore hose.

[Greg_E]

To maybe solve your input leak you could try getting some Hylomar sealer and carefully putting it around they area just under the hex head. Assemble the pieces and give it an hour is so to gel and see what happens. Do not over do the sealer, you don't want it in your pump.

Also you might see if you can find a copper washer that fits tight to the inlet fitting, that will crush down and should form a seal between the hex and the pump body.

[caniborrowsomeammo]

All I want to do is machine that area right under the nut for an O-ring so it doesn't leak!  Air comes in through that groove under the nut, and leaks when boosted because there is no o-ring above it!  I just need an o-ring between that groove and the nut!    Someone here has surely done it...  I wish I had a lathe!  Looking above the dollar bill...   Right between the E and S in Reserve! 

The boosting still works, I just lose a lot of air when using a portable tank. 

I put 4-5 wraps of teflon tape there, only leaks when 50-60 psi+ added to pump. Try not to get any tape into groove above "RE". I regulate <40-45 psi into pump. <20 when approaching 2800# and above. I use molecular sieve in my portable tank to dry the air per KiethJ.

[n2omike]

All I want to do is machine that area right under the nut for an O-ring so it doesn't leak!  Air comes in through that groove under the nut, and leaks when boosted because there is no o-ring above it!  I just need an o-ring between that groove and the nut!    Someone here has surely done it...  I wish I had a lathe!  Looking above the dollar bill...   Right between the E and S in Reserve! 

The boosting still works, I just lose a lot of air when using a portable tank. 

I put 4-5 wraps of teflon tape there, only leaks when 50-60 psi+ added to pump. Try not to get any tape into groove above "RE". I regulate <40-45 psi into pump. <20 when approaching 2800# and above. I use molecular sieve in my portable tank to dry the air per KiethJ.

Thanks!  I'll Try that!  And thanks for the info on the microbore hose!

[n2omike]

I put 4-5 wraps of teflon tape there, only leaks when 50-60 psi+ added to pump. Try not to get any tape into groove above "RE". I regulate <40-45 psi into pump. <20 when approaching 2800# and above. I use molecular sieve in my portable tank to dry the air per KiethJ.

I tried the tape!  MUCH less leakage! 
I may still try to groove it for a o-ring in the future, but the tape is a good quick fix!  We'll see how long it lasts! 
Thanks Again!

Mike

[BigTinBoat]

Also you might see if you can find a copper washer that fits tight to the inlet fitting, that will crush down and should form a seal between the hex and the pump body.

I think this would be the best way to seal it. No chance of any tape or sealer getting sucked into the pump.

[match]

Man, I'll be so glad when they come out with wireless power :-)

We have that right now, but I think it's called Lightening.

Tesla has the patent on that.