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All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Topic started by: mcc1961 on February 25, 2014, 07:04:45 AM
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I have read about boosting a hand pump with an air compressor.Does anyone have a video of how this is done?
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I have read about boosting a hand pump with an air compressor.Does anyone have a video of how this is done?
not hard really do not need a video Just a few 1/8" fittings and a dryer or two from harbor freight. Feed the air through the dryer from compressor at about 20 psi into the hand pump air intake ,connect a female foster to the air intake of the hand pump and viola instant boosted hand pump
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Connect hose to dryer filter.
(http://joefish.homestead.com/AirAssist01.jpg)
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;D Sorry I couldn't post a picture but that is similar to what I did with the exception of a small portable oil less compressor. Mine feeds a Hill Pump and it does work
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How about direct hook up from the compressor regulated to 20psi with the filter setup? Can this be done to the FX 3 stage pump?
FANG
JYAG
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How about direct hook up from the compressor regulated to 20psi with the filter setup? Can this be done to the FX 3 stage pump?
FANG
JYAG
I would think yes if you have a threaded air inlet om the pump. I was able to do it with a Hill Pump with just parts from Harbor Freight. I don't know for sure about the FX pump but it should be doable ;) I used a male foster fitting on the inlet to the Dryer and fed directly into the hose adapter of the hill pump Correction air inlet feeding the Hill Pump
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Yes, hooked direct to a compressor with 20psi reg will work. I pump inside and don't want the noise of the compressor. Buddy tank works great for that, and during the humid summer months, acts as another moisture trap.
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How much of a difference does this make in the number of strokes to fill the gun? And how much is pumping effort increased since you are now compressing a higher volume of air? My point being if it takes you 70 strokes at we'll say 50lbs of effort to fill gun x from 1700 to 2500psi, and when boosted takes 35 strokes at 100lbs to do the same, either way you're putting out 3500lbs of effort. Yes I know those terms probably aren't correct, but you get what I'm saying though.
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Just don't think the FX is doable without some mods.
I hate to start modding the pump. Its not a bad pump to rebuild but I think some drilling and tapping is going to be needed on my 3 stage.
FANG
JYAG
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From doing 2K to 3K fills, save about 50% of strokes. They are a little harder, and when getting close to 3K, I turn the feed psi down a little. When filling from zero, I turn psi up some, for the first 2K.
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Do you have to worry about the moisture if you use just one dryer?
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The compressor itself is your first moisture remover. Compressing air causes humidity to condense in the tank thus removing it from the air. I put compressor air into the buddy tank. It has a regulator with a moisture trap on the output of the tank. Then it goes into the HF desiccant filter on the Benji pump. The pump is also a moisture remover but I never see any moisture exhausted when I open the relief valve where it would collect. I live in Houston where it is always humid. My compressor is in the garage. I think my system removes most of the moisture before entering the Mrod tank. And think about this.....that air in the tank is going to be an ongoing decrease in pressure as you shoot. That too causes a lowering of relative humidity.
PS my desiccant crystals turn from blue to pink as they absorb water. I always replace it at the first sign of any pink. I heat my used crystals to dry them for reuse.
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From doing 2K to 3K fills, save about 50% of strokes. They are a little harder, and when getting close to 3K, I turn the feed psi down a little. When filling from zero, I turn psi up some, for the first 2K.
This is exactly what I do as well.
I think it is important to note that the air around you is about 14 psi unless you are at high altitude. 28 psi is only doubling the pressure from 1 atmosphere to 2. Therefore you are starting with double the pressure which cuts the pumps in half. You have doubled the efficiency of the pump.
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Boosted my pump today. Pumped from 1500-3200 (gun gauge) and it took 65 pumps. Would have been over 100 not boosted. One thing though, Air is coming out of the pump the whole time so not all of the air from the compressor goes into the gun tube. Is that normal. I was running 25psi. Coming out of the compressor into HB desiccant filter, 3 feet air hose, adapters, and into the sun optics desiccant filter. Any idea if the air will be very dry. I don't know how well these desiccant filters work as the air passes thru them very quickly.
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Boosted my pump today. Pumped from 1500-3200 (gun gauge) and it took 65 pumps. Would have been over 100 not boosted. One thing though, Air is coming out of the pump the whole time so not all of the air from the compressor goes into the gun tube. Is that normal. I was running 25psi. Coming out of the compressor into HB desiccant filter, 3 feet air hose, adapters, and into the sun optics desiccant filter. Any idea if the air will be very dry. I don't know how well these desiccant filters work as the air passes thru them very quickly.
Mine too was blowing air out the entire time. I stopped after a few pumps as I did not think it was right. I have since gotten a tank, though am still interested in this for the day I run out of air in the tank as it is a 35 min drive to get to a scuba shop.
Does everyone have air blow when they use this mod ?
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Does everyone have air blow when they use this mod ?
Yep...I boosted my Hill pump a while back and it has always leaked. Not a huge amount all at once, just a slow and steady "Hisssssssssss"...not really a big deal IMO ;)
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I had to pick up a new compressor today to replace my old one, so while I was at it I picked up the stuff to boost my Hill pump. All I have to say is WOW, big difference. It's almost like cheating, thanks guys. :D
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I had to pick up a new compressor today to replace my old one, so while I was at it I picked up the stuff to boost my Hill pump. All I have to say is WOW, big difference. It's almost like cheating, thanks guys. :D
Now tell me why it is so hard to convince people of this. It's harder than selling Amway. ::)
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I had to pick up a new compressor today to replace my old one, so while I was at it I picked up the stuff to boost my Hill pump. All I have to say is WOW, big difference. It's almost like cheating, thanks guys. :D
Now tell me why it is so hard to convince people of this. It's harder than selling Amway. ::)
What?... you don't use the new Amway LOC bore cleaner? ::)
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I had to pick up a new compressor today to replace my old one, so while I was at it I picked up the stuff to boost my Hill pump. All I have to say is WOW, big difference. It's almost like cheating, thanks guys. :D
Now tell me why it is so hard to convince people of this. It's harder than selling Amway. ::)
LOL, Well, I'm not completely sure. But I will say that I think some of it is just the unknown what if's that go through some people's minds, basically just worrying about what could go wrong I suppose. And it's harder to pump of course, but I'm fairly heavy so I just use that to my advantage, along with pumping slower as well so it's a fair trade off for me. Still beats pumping for 60-70 strokes any day of the week. The only downfall is shooing a lot more pellets due to less pumping. ;D
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Shoebox heading my way. Cheating big time.
FANG
JYSG
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;D ;D Freedom 8 fills Guppy tank from 2500 to 4500 psi in about 1 hour and I can fill my pcp rifles about 14 times from 1800 to 2600 psi win win and this old fart goes back to sweating only when doing something that requires that heavy breathing and sweat. PS Freedom 8 ain't cheating
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Can you use one of those pancake compressors that you'd use for an air nailer?
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Can you use one of those pancake compressors that you'd use for an air nailer?
Yes. Any compressor that can deliver a regulated output at 20 to 30 psi.
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Oil less
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;D Home Depot and Lowes have a porter cable oil less pancake with 150 psi tank pressure with adjustable regulator built in for $129.00 not too heavy (35 lbs) and fairly quiet. Set regulator to 20 psi for hand pumping and set to 120 psi for the new Freedom 8 this whole thing set up and running with in line desiccant filter about $1,300
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I want one! I just spent 1450 on a rifle though, so maybe in a couple months. Pump, pump, pump away for now!
-Matt
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Some guys have said that the pumps leak when boosting it off a compressor. I think if you use a small storage tank the pressure will go down as the pressure drops when the gun gets near 3000 psi it will be easier to pump with a lot less leakage
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Some guys have said that the pumps leak when boosting it off a compressor. I think if you use a small storage tank the pressure will go down as the pressure drops when the gun gets near 3000 psi it will be easier to pump with a lot less leakage
Yea match the curve so to speak. A large tank with 30-35psi to start. ends with 15-20psi and your gun is at say 3100-3200. Of course higher fills would be ending in lower booster tank psi. The point is it would require fewer strokes and the effort would be constant through out the filling cycle. Just more efficient all the way around. This will require some figurrin.
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I use the small tank on my compressor and do it this way;
1. Run the compressor until it completely fills the tank to 150psi and shuts off
2. Let the air cool down some in the tank so any water will condensate on the bottom (air fitting is at the top)
3. Set the regulator to 20-25psi for a normal fill, higher if the air tank on the gun is empty for some reason
4. Hook up my fill line which has one water trap with dessicant at the tank and another on the Hill pump
5. Pump the gun, slowly to account for more pumping pressure and making sure I'm pushing straight down on the handle
I generally don't have to run the compressor but every few fills, but I just top off the tank to 150psi each time so the air cools and again lets water condensate to the bottom. I bought one of the little Porter Cable compressors at Lowes, couldn't be happier with it.
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That's exactly how I do it too, but with an 8 gallon compressor. I read on another forum (might even have been Rsterne"s post now that I think about it) that if you use a smaller 2-3 gallon pancake compressor it evens out the pressure a little better once you get up to the 2500 - 3000 psi range due to the smaller reservoir of air on tap.
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Me 2 er uh...3. I never see any water exhausted by the pump when I depressurize it before disconnect. And I live in Humidtown Texas and always fill outdoors.
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Some guys have said that the pumps leak when boosting it off a compressor. I think if you use a small storage tank the pressure will go down as the pressure drops when the gun gets near 3000 psi it will be easier to pump with a lot less leakage
Yea match the curve so to speak. A large tank with 30-35psi to start. ends with 15-20psi and your gun is at say 3100-3200. Of course higher fills would be ending in lower booster tank psi. The point is it would require fewer strokes and the effort would be constant through out the filling cycle. Just more efficient all the way around. This will require some figurrin.
Yes let me know if you figure it out lol. I think matching the curve as you say is a good way because if compressor goes on and pressure goes back to 30-35 psi as your gun is near 3000 psi it will be hard to pump
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This is a great way to conserve on energy! I think if I buy 2 pumps 2 Tee's and get my wife on one pump and me on the other I could do an 80 pump stroke fill up in 20 pumps or less, also if I go slow enough I could do it in 10 pump stokes! ;D You know slow down and tell the wife faster-faster-faster :D Gosh hope she don't read this ;)
All jokes aside, what happens is say your pump itself pulls in 1 cu ft of air and air compresses so when you hook up the pressurized external air source you compress about double the air volume into the pump, so when you push down on the stroke you are actually pushing 2 cu ft into the gun instead of 1 cu ft. cool I say. Not only that I bet the pump stays cooling due to less strokes and saving on wear and tear of the O-Rings!
Wonder how many strokes it would take to fill my 90 cu in buddy bottle to say 3600 PSI!
I know it don't really pump 1 cubic foot of air but, those numbers are just easier to understand!
William
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Never realized you could do that. That's pretty cool.
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[Mine too was blowing air out the entire time. I stopped after a few pumps as I did not think it was right. I have since gotten a tank, though am still interested in this for the day I run out of air in the tank as it is a 35 min drive to get to a scuba shop.
Does everyone have air blow when they use this mod ?
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My Benji pump leaked at first, I wrapped teflon tape (5 wraps ) on the tube where it threads into the base, problem solved. Be careful when wrapping tape you do not want the tape into the base where pieces of tape can get into the air system- gun.
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Who needs a boosted pump? That is what my girlfriend is for lol. She does not have to go to the gym as much pumping up my guns lol