Author Topic: Are foot pumps dangerous for PCP guns? (Read 13567 times))

wolfman22cal · « **on:** September 05, 2012, 11:48:03 PM »

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....

MustangMike · « **Reply #1 on:** September 06, 2012, 12:14:05 AM »

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

SwampDonkey · « **Reply #2 on:** September 06, 2012, 12:53:35 AM »

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

Bullit · « **Reply #3 on:** September 06, 2012, 02:06:35 AM »

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.

MustangMike · « **Reply #4 on:** September 06, 2012, 04:05:39 AM »

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...

Nomadic Pirate · « **Reply #5 on:** September 06, 2012, 01:07:11 PM »

By foot pumps he is clearly refering to hand pumps style

mtsheron70 · « **Reply #6 on:** September 06, 2012, 07:04:47 PM »

Quote from: MustangMike on September 06, 2012, 04:05:39 AM

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..................

02stampede · « **Reply #7 on:** September 06, 2012, 07:14:39 PM »

^ 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..

Bullit · « **Reply #8 on:** September 06, 2012, 07:19:24 PM »

That's enough guys.

SwampDonkey · « **Reply #9 on:** September 07, 2012, 11:18:05 AM »

Quote from: mtsheron70 on September 06, 2012, 07:04:47 PM

Quote from: MustangMike on September 06, 2012, 04:05:39 AM
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..................

wally world has them

MustangMike · « **Reply #10 on:** September 07, 2012, 11:32:29 AM »

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

ericw · « **Reply #11 on:** September 07, 2012, 11:48:35 AM »

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

MustangMike · « **Reply #12 on:** September 07, 2012, 11:59:40 AM »

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

mtsheron70 · « **Reply #13 on:** September 07, 2012, 12:03:16 PM »

Quote from: ericw on September 07, 2012, 11:48:35 AM

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.

hogie · « **Reply #14 on:** September 08, 2012, 03:23:31 AM »

check out SHOEBOX COMPRESSORS

Bullit · « **Reply #15 on:** September 08, 2012, 08:32:15 AM »

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.

mtsheron70 · « **Reply #16 on:** September 08, 2012, 08:47:52 AM »

Quote from: KYMike on September 08, 2012, 08:32:15 AM

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.

Bullit · « **Reply #17 on:** September 08, 2012, 10:14:18 AM »

Yeah, I made some assumptions concerning fill rates. I edited my post to help clear this, and the moisture issues up. Thanks, Mike

Gary · « **Reply #18 on:** September 08, 2012, 04:31:14 PM »

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

Lee4019 · « **Reply #19 on:** September 08, 2012, 08:32:35 PM »

A quick Question. About how many pumps to fill a Disco up to 2000psi, using a hand pump.

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Are foot pumps dangerous for PCP guns?

Author Topic: Are foot pumps dangerous for PCP guns? (Read 13567 times))

Nomadic Pirate