GTA
Support Equipment For PCP/HPA/CO2 and springers ,rams => Support Equipment For PCP/HPA/CO2 => Topic started by: wolfman22cal on September 05, 2012, 11:48:03 PM
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I was in a discussion this evening regarding foot pumps and the possible moisture they can transfer into your PCP gun. Ive pumped up my m-rod and even my Wolf with my Hill pump without any trouble. I use an Airhog now but always bring the Hill for a backup. My buddy sold his Theoben to a guy who foot pumped it up and now its on its way to AZ for a repair. I thought the triple filter on the Hill pumps were safe, not sure what pump the Theoben guy used. Id like to see a controlled test using a fixed volume of air with a foot pump vs. an Airhog or other tank. Do the seals go bad over time I wonder? What about the absorbent material used in foot pumps, should it be changed? Just thought Id throw it out to the PCP guys. In the meantime Ill contact Hill and report back with what they tell me. Thanks guys....
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since when has there been a foot pump ment for pcp ? you do know you cant use a bicycle pump on pcp's because as far as i know there isnt any foot pumps
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Yeah....what Mike said
bet ya dollars to donuts it's going to AZ because it won't function at 50psi that the bike pump is putting out
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If you're talking about an air tank that you fill from a scuba shop. The air will much purer, than any pump. Moisture control, to me, in portable pumps isn't the greatest. But I understand guys don't want to add on separate driers and filters (like scuba shops use with their compressor), to their portable pumps. It's a problem.
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i wasnt trying to sound rude with my previous reply, but i am confused as to what foot pump is being used or attempted to the be used...
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By foot pumps he is clearly refering to hand pumps style
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i wasnt trying to sound rude with my previous reply, but i am confused as to what foot pump is being used or attempted to the be used...
So am I! Last foot pump I saw was in the late 70's early 80's which my dad bought to pump up the tires in my sister's bike and mine. Haven't seen one in stores since! But that surely is not going to work of course.
Here is one so they do exist but have not seen one in many years however..................(http://www.chinatraderonline.com/Files/Household/DIY-Tools/Bicycle-Accessories/Foot-Pump-21273417769.jpg)
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^ Ha! I remember those.
I am going to give him the benefit of the doubt and say he meant a hand pump but referred to it as a foot pump. You do put your feet on it. They just don't do the work..
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That's enough guys.
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i wasnt trying to sound rude with my previous reply, but i am confused as to what foot pump is being used or attempted to the be used...
So am I! Last foot pump I saw was in the late 70's early 80's which my dad bought to pump up the tires in my sister's bike and mine. Haven't seen one in stores since! But that surely is not going to work of course.
Here is one so they do exist but have not seen one in many years however..................(http://www.chinatraderonline.com/Files/Household/DIY-Tools/Bicycle-Accessories/Foot-Pump-21273417769.jpg)
wally world has them
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guys lets stay on topic, if the op was talking about a foot pump id like to know more info on it. but i think he was referring to a hand pump
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Back to airguns... has anybody tried to modify a hand pump to run off a very low RPM (gear motor) motor driving a big flywheel? Should be do-able and could look funny but seems it should work at maybe 30 RPM or so .. so it doesn't overheat. Just had to throw a wrench into the gears here ;)
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eric
i think by the time you rig that up and go through the process of testing it and refining it, it would have been cheaper to find a used tank setup that would get you buy for a couple of years
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Back to airguns... has anybody tried to modify a hand pump to run off a very low RPM (gear motor) motor driving a big flywheel? Should be do-able and could look funny but seems it should work at maybe 30 RPM or so .. so it doesn't overheat. Just had to throw a wrench into the gears here ;)
I think a hand pump overheating most often is due to technique. If you do slow deliberate strokes then you will keep heating of the pump to a minimum. If you jump up and down on the pump like some crazed person I would say your going to overheat it and create quick failure.
So technique is my reason for failures.......but you ask the gear motor question................on the M-Rod site there was someone there posting on a system to make your hand pump into such a beast. May have been mind only thought however that never came to fruition in the end.
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check out SHOEBOX COMPRESSORS
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Shoebox compressor is okay, if you already have a decent shop compressor. It requires an input air supply, that takes a few hours to fill a 4500psi tank, (you guys know how hard that last 1/3 comes!). I wanted one, then did some reading up on it, and rebuild costs. But still, the moisture problem isn't solved, so you still have rebuild issues.
It's a good idea for someone with good dry shop air.
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Shoebox compressor is okay, if you already have a decent shop compressor. It requires an input air supply, that takes a few hours to fill a 4500psi tank. I wanted one, then did some reading up on it, and rebuild costs.
It's a good idea for someone with good shop air.
A SB is great if you want to use a Guppy Tank which would take less than or around 30-40 minutes to fill from emty. For the M-Rod shooting down to 2000 psi for instance and refilling to 2900 psi would give you around 15 good fills. At 30 shots per cycle at 15 fills that is a tin of JSB Kings! That is alot of shooting for one to do if they are mixing up springers and CO2 and multi-pumpers in a long days session.
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Yeah, I made some assumptions concerning fill rates. I edited my post to help clear this, and the moisture issues up. Thanks, Mike
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I have a shoe box compressor and I filled a 44cf tank from empty in about 12 hours. Filling from 3 k takes 1 1/2 to 2 hours. I had to do a rebuild on mine and it's easy and only took about 45 minutes. I think I could do it in half the time now.
I think it was FX that had a motorized mechanical hand pump setup a few years ago but it did not last very long.
Gary
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A quick Question. About how many pumps to fill a Disco up to 2000psi, using a hand pump.
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I was in a discussion this evening regarding foot pumps and the possible moisture they can transfer into your PCP gun. Ive pumped up my m-rod and even my Wolf with my Hill pump without any trouble. I use an Airhog now but always bring the Hill for a backup. My buddy sold his Theoben to a guy who foot pumped it up and now its on its way to AZ for a repair. I thought the triple filter on the Hill pumps were safe, not sure what pump the Theoben guy used. Id like to see a controlled test using a fixed volume of air with a foot pump vs. an Airhog or other tank. Do the seals go bad over time I wonder? What about the absorbent material used in foot pumps, should it be changed? Just thought Id throw it out to the PCP guys. In the meantime Ill contact Hill and report back with what they tell me. Thanks guys....
guys i know the title says foot pump but he states that he is using a hill pump in his post. ;D
the hill pump is pretty good. the moisture trap will surely help. but if it absorbs moisture it will eventually lose its capacity to absorb so it should be changed occasionally. ;D not sure how often. any time you can put dry air of any sort in your gun vs moist humid air all the better. ;D i would use that tank rather than that pump. keep the pump as a last resort back up. a little silicone oil and annual service would keep the moisture away as well. and by service i mean to disassemble, inspect, clean, and grease with divers silicone then reassemble. ;D
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A quick Question. About how many pumps to fill a Disco up to 2000psi, using a hand pump.
About 150 from zero and around 60 to go from 1000-2100 for me.