I still haven't had my China-pump apart and it's seen some ridiculous duty. 200+ fills on my PP700. I pump my Leshiy back up to 260-ish (was going 270 but I decided 260 was fine) nearly every day when there are starlings. My Benji pump is a good back-up for the PP700 but it can't hang with the Leshiy's fill pressure. I foresee getting a couple more China-pumps just because I can.Also probably gonna bit the bullet and get a compressor at some point, but no rush.
Quote from: Dan H on March 13, 2020, 11:21:05 PMQuote from: Nomadic Pirate on March 13, 2020, 01:55:18 PMSame here, much easier to pump then use my Nomad II compressor.Only use the compressor once in awhile to make sure it doesn't seize LOL I would disagree with that ,at least if you have the carbon scba tanks to fill to 4500 psi , shoebox fills those up very nice , trust me you are not going to hand pump fill the big bores up over and over especially during testing of ammo/gun's or shooting a lot in a hour or so session , you would be pumping yourself to death LOL ! … I swim a mile a day 5 days a week core train plus lift weights so the last thing I want to do is pump my gun up LOL …. I like having fun with the guns …. now if you are going day hiking in the rain forest shooting .22 or .25 like we do here to top off , yeah you can do that = hand pump, but as I have found out much easier to just bring the small carbon tank for re charge How do you think I tested ammo in my 400 FPE Claw .50 that was getting 2 shots per fill ?......Yep, hand pump Been testing ammo on big bores for over a decade and always used a handpump,..the compressor I had it for a year and used it probably 40-50 times
Quote from: Nomadic Pirate on March 13, 2020, 01:55:18 PMSame here, much easier to pump then use my Nomad II compressor.Only use the compressor once in awhile to make sure it doesn't seize LOL I would disagree with that ,at least if you have the carbon scba tanks to fill to 4500 psi , shoebox fills those up very nice , trust me you are not going to hand pump fill the big bores up over and over especially during testing of ammo/gun's or shooting a lot in a hour or so session , you would be pumping yourself to death LOL ! … I swim a mile a day 5 days a week core train plus lift weights so the last thing I want to do is pump my gun up LOL …. I like having fun with the guns …. now if you are going day hiking in the rain forest shooting .22 or .25 like we do here to top off , yeah you can do that = hand pump, but as I have found out much easier to just bring the small carbon tank for re charge
Same here, much easier to pump then use my Nomad II compressor.Only use the compressor once in awhile to make sure it doesn't seize LOL
Yep, I'm not forced to use the pump I could get tanks and compressor easily,......it's a choice and I wouldn't do it any other way I'm not lazy and enjoy the feeling that every shot I take I have put something into it,...not unlike archery, actually exactly like archery
Quote from: Ribbonstone on March 13, 2020, 03:42:06 PMSooner or later everyone is going to have to de-gas and take the PCP apart....then fill from Zero once you think it's leak-proof.Wouldn't be so bad hand-pumping if what you 100% knew the fix actually turned out to be a fix....but a couple of potential cycles from dead-empty, fix again, refill,etc….. really takes the heart out of a pump filler.So long as it's running/holding air as expected, pretty happy withy the cheap-china-pump.Been there, done that. Bought a compressor. Still good to have the pump in case of compressor break down. Not too bad on my 200 bar rifle tubes. Would not want to see what’s needed on my 250 bar rifle with only a hand pump!
Sooner or later everyone is going to have to de-gas and take the PCP apart....then fill from Zero once you think it's leak-proof.Wouldn't be so bad hand-pumping if what you 100% knew the fix actually turned out to be a fix....but a couple of potential cycles from dead-empty, fix again, refill,etc….. really takes the heart out of a pump filler.So long as it's running/holding air as expected, pretty happy withy the cheap-china-pump.
Quote from: cherokeesteve on March 13, 2020, 07:08:53 PMQuote from: Ribbonstone on March 13, 2020, 03:42:06 PMSooner or later everyone is going to have to de-gas and take the PCP apart....then fill from Zero once you think it's leak-proof.Wouldn't be so bad hand-pumping if what you 100% knew the fix actually turned out to be a fix....but a couple of potential cycles from dead-empty, fix again, refill,etc….. really takes the heart out of a pump filler.So long as it's running/holding air as expected, pretty happy withy the cheap-china-pump.Been there, done that. Bought a compressor. Still good to have the pump in case of compressor break down. Not too bad on my 200 bar rifle tubes. Would not want to see what’s needed on my 250 bar rifle with only a hand pump!4-stage hand pump will make pumping higher pressures easier.But for pumping lower pressures a 3-stage is more efficient.
Quote from: UnderPressure on March 14, 2020, 04:18:32 AMQuote from: cherokeesteve on March 13, 2020, 07:08:53 PMQuote from: Ribbonstone on March 13, 2020, 03:42:06 PMSooner or later everyone is going to have to de-gas and take the PCP apart....then fill from Zero once you think it's leak-proof.Wouldn't be so bad hand-pumping if what you 100% knew the fix actually turned out to be a fix....but a couple of potential cycles from dead-empty, fix again, refill,etc….. really takes the heart out of a pump filler.So long as it's running/holding air as expected, pretty happy withy the cheap-china-pump.Been there, done that. Bought a compressor. Still good to have the pump in case of compressor break down. Not too bad on my 200 bar rifle tubes. Would not want to see what’s needed on my 250 bar rifle with only a hand pump!4-stage hand pump will make pumping higher pressures easier.But for pumping lower pressures a 3-stage is more efficient.Perhaps you could post a link to a reasonably priced 4 stage hand pump?I can't find one...
Quote from: BackStop on March 14, 2020, 04:21:49 AMQuote from: UnderPressure on March 14, 2020, 04:18:32 AMQuote from: cherokeesteve on March 13, 2020, 07:08:53 PMQuote from: Ribbonstone on March 13, 2020, 03:42:06 PMSooner or later everyone is going to have to de-gas and take the PCP apart....then fill from Zero once you think it's leak-proof.Wouldn't be so bad hand-pumping if what you 100% knew the fix actually turned out to be a fix....but a couple of potential cycles from dead-empty, fix again, refill,etc….. really takes the heart out of a pump filler.So long as it's running/holding air as expected, pretty happy withy the cheap-china-pump.Been there, done that. Bought a compressor. Still good to have the pump in case of compressor break down. Not too bad on my 200 bar rifle tubes. Would not want to see what’s needed on my 250 bar rifle with only a hand pump!4-stage hand pump will make pumping higher pressures easier.But for pumping lower pressures a 3-stage is more efficient.Perhaps you could post a link to a reasonably priced 4 stage hand pump?I can't find one...If you look on Amazon or ebay you find chinese pumps that look just like the Hatsan TactAir 4 Stage PCP Hand Pump.
I still have a stainless one still in the box and only used once just to make sure that it works. I also have a TAOUSA behind the seat of my truck for emergencies My preference is still my F10 for the larger capacity air tubes though but for something like the Prod, PP700SA and my Varmint (SPA .22) hand pumps are just the ticket, they're about as fast as using a bottle to fill because hooking them up and hand pumping isn't much slower.
Ok I found this 4 stage pump that looks the same as the Hatsan …. $75.99https://www.ebay.com/itm/4500PSI-30mpa-4Stage-High-Pressure-Cycling-Hand-PCP-Pump-Fit-Car-Motorcycle/133073198225?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D1%26asc%3D225073%26meid%3D060af6670ceb4a53876d72a3f6ca0bd6%26pid%3D100005%26rk%3D6%26rkt%3D12%26mehot%3Dco%26sd%3D223789311430%26itm%3D133073198225%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv5PairwiseWeb&_trksid=p2047675.c100005.m1851
Here is a video by Aveng Shang (who in the comments mentions he works for Zypcpump.com) comparing 4 stage to 3 stage filling a 300cc bottle from 0 psi to 1000 PSI:The amount of pumps necessary dropped from 110 for the 3 stage to 94 for the 4-stage.As noted in the video the circumference of the 4 stage pump tube is larger by 13.6% (10 cm vs. 8.8cm). This works out to be 29% greater swept volume.P.S. Here is a link to the 4 stage hand pump--> http://zypcppump.com/product/4-stage-4500psi-high-pressure-hand-operated-pcp-pump-for-cylinder/(It does look exactly the same as the 4-stage pump we have seen on ebay.)
I've always wanted to get a chinese pump and automate it
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