Introducing the ALL new GX CS4-I High Pressure air solution for your PCP!

[@TargetForge]

Purchase yours here: CS4-I - app.rockporch.com/prdlink/JQbFdsXagP Get your hour meter and illuminated flow meter here: Hour Meter - targetforge.net/shop/ols/products/hour-meter-complete-kits/v/HR-MTR-CMP-KTS-STC-ON Flow Illumination - targetforge.net/shop/ols/products/gx4-coolant-illumination Affiliate Links That Support The Work We Do Here! Use our link and visit Airgun Depot! amazon.rockporch.com/mlink/372?userId=140361 CS2 - amazon.rockporch.com/prdlink/UBed3CCDvC CS2 L2 (Battery Powered)- amazon.rockporch.com/prdlink/DLgZx6QxCT CS3 - amazon.rockporch.com/prdlink/nYp6zRhSOu CS3i- amazon.rockporch.com/prdlink/JNULlImjtd CS3 L3 (Battery Powered) - amazon.rockporch.com/prdlink/UVZP8sYOVV CS4 - amazon.rockporch.com/prdlink/DPZTX4fHQM CS4i - amazon.rockporch.com/prdlink/JQbFdsXagP The “i” versions have the AC power supply built into the chassis and can run on 12VDC as well.

[@ssquirrel88]

Wish I could afford this, I used my AV G9 hand pump to reach 4200psi today. Keeping me jacked.

[@barryhallsack8852]

I didn't even know they had the one with the integrated power supply. Oh well I just got mine a couple days ago. It works great so far. I just got the 3-year extended warranty and ordered it through your link on Amazon.

[@TargetForge]

I believe you still got a great machine. No worries! Thank you for the comment!

[@barryhallsack8852]

@@TargetForge thanks for all your hard work. I really enjoy your channel. I'm new to the hobby. I just got my new gun and compressor last weekend 😎

[@wd229]

Hey Bill that backdrop is awesome, I love it. The video was good too, as always.

[@TargetForge]

Awesome, thank you!

[@TangDynasty1983]

Could you please make a video on how to properly install the hour meter on this particular model? Thanks a lot!

[@russellupton3056]

Any idea when these will be back in stock?? I am in the market for a compressor, and this looks like a great unit, but I really do want one with an integrated converter.

[@wruehl]

I'm sure they will be back in stock soon!

[@AFitchguy07]

Still out of stock

[@usmc6157]

Good vid, liked and subbed! Just received my new GX CS4-I a few days ago, $580 to the door. Flushed and drained it a few times with distilled water, no sediment or otherwise, and filled with the same. Runs like a champ and fairly quiet.

[@Alloutairguns]

Hey bud how did you get it for 580$ rn it’s showing 699 on Amazon

[@usmc6157]

@@Alloutairguns Bought mine straight from GXPump and they were running a 10% off…just happened to catch it at the right time.

[@stedyone1090]

I have the original CX4 and purchased the light from you. The new i model I read also has a newer stronger triple stage motor !!

[@TargetForge]

Not true, lots of bad information out there. The motors on the CS4 and CS4-I are identical. The air pump on both is three stage.

[@TiredMachine]

Great video Bill. I have been working a lot lately and did not get to watch this until today. I really like the internal power supply on the I model. I will keep an eye on Amazon maybe the will have a sale soon. Thanks for the great video Cheers from the desert SW USA!

[@TargetForge]

Glad you enjoyed it

[@jamesperkins343]

Hello from Texas, I watched your past videos in-order to purchase my PCP air compressor over a year ago. I bought the GX CS4, it has been a great machine. I have a question on the grease port or pot. I looked for a breakdown on the grease pot and how it is assembled. Because,,,,, I unscrewed my pot to see how it works..... ummm, there was a rubber seal in the bottom with no holes to let grease in the little grease port...... is this correct for a rubber seal to be over the hole? Now that I have showed all my mistake, could you give a breakdown on how it is supposed to be put together correctly and explain how the grease gets past the rubber seal? Thanks

[@TargetForge]

Just put it back together exactly as it came apart and DO NOT MODIFY the rubber disk, there is nothing wrong with it. It is designed to limit the amount of grease that enter the system in case someone starts cranking on the knob. Also be sure to NOT mix a grease of unknown compatibility in the pot, Target Forge sells the exact same grease that came in your unit from the factory, and truth be told that grease for a sliding application is really good.

[@BubaJ1000]

Sweet unit. Have you ever filled a tank that was past its registration or usage date. Forego having it recertified.?

[@TargetForge]

I can neither confirm nor deny those allegations...Wink...

[@DYS_72]

Hi Bill, I just got my CS4-I first thing I noticed was the hose. I wanted to know if you recommend upgrading the fill hose. The stock one seems very skinny and flimsy, especially compared to the hose on my Air Venturi hand pump. It’s hard to imagine it can handle 5800 PSI, not that I have anything that requires that currently. Do you think a better, wider hose will also improve the speed?

[@TargetForge]

I have found the fill hose be perfectly adequate. You really cannot tell flow rate from external diameter. Unless you actually cut open both and evaluate wall thickness you will likely come up with an incorrect assumption. Rejoice that you may never need that hand pump again!

[@DYS_72]

@@TargetForgeThank you for the reassurance. And yes rejoice indeed!!😅

[@kricketkricket6737]

You think yong heng lcd digital smart new model or gx cs4 the best?

[@TargetForge]

I believe the CS4 is MUCH better.

[@bretshivers8352]

Love your content and innovative skills! I am coming from an old shoebox and airtanks being filled at a shop. I shoot a fair amount but not on point with some, i been looking at the gx 2 and 3 what one would you recomend and where would you buy?

[@TargetForge]

All I can offer is the facts. If you desire to fill a bottle, and lug it around and refill it when it gets low AND fill guns directly, the CS4 or CS4-I is a great choice. Now if you simply want to fill your gun between sessions the CS2 (Manual) and CS3 (Autostop) are great choices. It all depends on how you intend to use it.

[@normmcintyre9027]

Hi , have you heard if they will be bringing it out in 240v for countries that run that power system ?

[@TargetForge]

It already is! Just flip the switch on the back to select 240VAC. No worries.

[@jamiemorgan9812]

I’m new to the hobby. You have convinced me to buy this unit. Should I also purchase a moisture separator?

[@TargetForge]

I do not run one on mine, the water separator is pretty good on the CS4.

[@TargetForge]

I DO recommend my hour meter and flow light, they really make this unit complete.

[@BostonWhoFan515]

Bill, I desperately need your input. I just got this compressor. I'm only filling guns with standard HPA tubes, not small tanks, directly. There isn't any sort of filter on this unit. I don't think it has an inner filter either, like the Benjamin Recharge, which is similar in many ways. Is the CS4-I safe to fill guns directly as is, or should I get a small inline filter? I'm guessing the huge Tuxing molecular seive filter would probably be a bit overkill to fill guns, right? Right now, I'm just refilling my guns after shooting and bringing them back up to full. A very short charge. I hope I'm not dumping moisture into these guns now. Thanks in advance. I appreciate your time. Cheers.

[@TargetForge]

I do not run a separate separator on mine, the one on the CS4-i works pretty well. Since it is oil free no "filter" is really needed. Enjoy!

[@JoeFriday-h9n]

What do you think about removing the cover and drilling a bunch of holes in it for venting or running with the cover off ? What about making the water tank larger ? Thanks

[@TargetForge]

I don't think its is needed at all and might lead to reduced reliability. It runs pretty cool, check out my thermal test video.

[@JohnDoeSmith08]

Hope they improved the power supply. Mine had the external PS and got about 40 minutes total. I charged 1 air rifle shutdown & connected next air rifle PS quit when I hit start. Returned it and am still running the CS2. Heard they had PS problems with them.

[@TargetForge]

I've not heard that but will keep an eye on it. Thank you.

[@TargetForge]

I just noticed you said EXTERNAL, lol. Completely missed that. I have been testing a super duty replacement external supply, maybe I should make that available.

[@JohnDoeSmith08]

@@TargetForge As with any hobby as my collection grows I may outgrow the CS2, as good as it is. The new CS4-i looks interesting and I will be keeping an eye on the reviews. My CS4 PS seems to be killed by a spike when I started the compressor. Didn't even have time to close the bleed valve. A more robust PS might be a good option. Thanks for your channel it has been a very good resource for a beginner!

[@TargetForge]

Thank you for your kind words!

[@fredA1234]

Is the hourmeter kit for the 4-I as well?

[@TargetForge]

Absolutely!😉

[@fredA1234]

OK, great ordering now

[@TargetForge]

Thank you!

[@thommytom]

Hello, do you no longer use Red Line water wetter in your water cooling? By the way, is this water wetter safe for the plastic pump? In the sheet I read 'Designed for use with all modern aluminum, cast iron, copper, brass and bronze cooling systems'

[@TargetForge]

I absolutely still use it. Is it a HUGE benefit? Probably not, but I'd rather help cooling than impede it with glycol. If you expect freezing conditions you will want coolant though, or the self disciple to drain the system for winter. Thanks for the comment!

[@thommytom]

@@TargetForge No need for anti freez, I am gonna use the pump only inside. Monday it arrives at my house but it is the CS4, we Europeans can't buy the 'i' version.Thank You for your answer and keep up the good work!

[@rvdawg6231]

Nice! Thanks for the update. Is the case the same size as the gx4?

[@TargetForge]

Thank you for your comment! The "I" is just a bit larger. Height is the same, it is ~1" wider and 1/2" longer than the CS4, which is still a great machine.

[@larryguinn8969]

Slightly of the subject but have you had any experience with the GX-E-L3? It’s advertised as 320 bar but the label says 300 bar and 300 bar on the pressure gauge is in the red!

[@TargetForge]

It will be fine, go fly some pellets!

[@perniciousprogressive8333]

Was planning on getting this as my main air, so was really happy to find that you've already done a video on it. Definitely be upgrading the DC lines and fitting w/ connectors, and an hour meter. I hate doin' stuff twice, and never regret buying quality, so I'm hoping to start out with decent gear to support my new Western AG. But here's the thing, while I really enjoyed your presentation on the Alpha filter, et al, I was curious why airgunners weren't trying to filter and dry their incoming air? Seems a better job could be accomplished for less dough, even if just passing your incoming charge through a desiccant bed. I use something similar (although w/ a considerable carbon chamber for organic vapor absorption) for my basement 3D printer & air brush hood set ups, where I need to clean and dry the air in a somewhat closed loop system. Figure it would improve compressor life as well, while also allowing longer life from any high pressure gear on the output side. Just curious on your take. Love your channel! 😊

[@dinogiolitti2844]

Does the unit come with everything you need for a deadhead test?

[@TargetForge]

Yes

[@dinogiolitti2844]

Do you recommend an additional filter?

[@TargetForge]

No, just vent the valve every 5 to 10 min during a long fill. Depending on Relative Humidity.

[@victoradams6635]

I have a cs4-I compressor that I am having problems with. When I set the pressure for a certain psi or bar, the compressor arrow will not stop filling and I have to turn the unit off before something bad happens. Can you help me diagnose this problem?

[@TargetForge]

@@victoradams6635 yes, can you book a session on the targetforge website?

[@victoradams6635]

I will

[@ronaldjones4569]

What do I need to do if I think I put to much grease in it by turning the grease know too much

[@TargetForge]

Open the burst disc fitting and remove the disc and the bolt that secures it. Make sure you have good water flow (My light kit is great for this) and let it run for an hour. Carefully use a cotton applicator and clean all the excess gook out of the burst disc port and carefully reassemble. Should be good to go now. Don't do that again! Lol.

[@DYS_72]

Thank you Bill for your thorough reviews and solid recommendations. Love the podcasts😊 I noticed they put rubber feet on the side, is that strictly for storage or can you run it on its side? P.S. I’m glad I held out for this one. I got a CS4 a few months back but it arrived damaged- the box and packaging was seriously compromised, so I didn’t even think twice about rejecting it.

[@TargetForge]

You probably can, but I do not. The separator works MUCH better when it is the high point.

[@chrisbruce4238]

So do you yourself service these if we have problems?

[@TargetForge]

Excellent question. Am I the service center? No. Do I provide parts, and videos so you can service out of warranty units yourself? Yes. I have also developed many add ons that make this line of compressors an even better value. Thank you for your comment!

[@n-a3585]

Does anyone know how long it would take to fill a 48ci tank from 1000-3000 psi? Amazon says something around 5 minutes perhaps? Thanks!

[@TargetForge]

The answer attributed to Amazon is not correct. 48ci is roughly 780cc's, a 2000psi delta on that volume will take approximately 15 to 20 minutes. Thank you for your comment!

[@n-a3585]

@@TargetForge Amazing! Thank you so much for your help!

[@adriankim6618]

Hi 👋 This can fill my 100 cu ft 4500 psi scuba tank? Without any problems? Currently I have 3300 psi.

[@TargetForge]

Yes, I demonstrate it in several videos. Thank you for your comment!

[@daveking2906]

Just got the cs4 I and first run sounds a lot slower than this one. I also hear a knock. I'm want to try and turn the grease but it says not to do that. Any suggestions? Says the unit was tested. I'm in the North East U.S so I filled with coolant.

[@TargetForge]

Hello Dave, ambient temperature can affect initial rpm until the machine achieves its normal operating temp. Booking a session with me on the Target Forge website would allow me to hear it running for myself. I see you are in the Northeast, will you be storing your compressor in an unheated space? Some anti freeze products when used at the wrong ratio can dramatically affect cooling capacity. I would run it and run the dead head test a few times before your return window on Amazon closes.

[@AnotherJonDoe]

Bill, do you sell these compressors yourself, directly, without going through Amazon?

[@TargetForge]

Typically? No. Have I had customers that paid a premium to have me order their machine, go through it, and fit my upgrades? Yes. I am in California, it is not inexpensive for that service.

[@WiscAirGunners]

Looks good!

[@TargetForge]

And now a word from "THE Wisconsin Airgunner" Thank you Officer Clarke!

[@ThePredator2k]

Turn the grease knop not every 4-6h? How long is the real interval? Every xxx h?

[@TargetForge]

The factory has stated that after the initial turn at 6 hours, only turn it when you hear it slow down. I disagree with them on this matter. I would advocate for once at six hours once at 16 hours and then every 16 unless you hear or see it slowing. I am working with them to create a better lubrication scheme based on actual test data. For now, I recommend my schedule, and purchasing via Amazon for protecting against the odd premature failure.

[@ThePredator2k]

​@@TargetForgeI thought it was the other way around. It only slows down when there is too much fat in it but you say it slows down when it needs fat. I hope you understand my English.

[@ThePredator2k]

​@@TargetForgecan you pls answer my second question.

[@TargetForge]

I'm not sure why you feel it needs to be one way or the other. We use the word grease for a thick bodied lubricant. Fat refers to animal tissue. Too much, or excessive lubrication is a problem, AND too little is a problem. Too much lubricant and airflow is obscured or the cylinder becomes hydraulically locked. Too little lubricant and the friction becomes excessive and seals stop working. I have advocated what I think the correct amount of lubrication is.

[@ThePredator2k]

@@TargetForge in German Grease translates in "Fett" :) thats why i wrote Fat. I asked today GX via Email as well and they say every 4-6h. And you 16 hm. I believe you when you say every 16h but at the same time i think when it brakes warranty will not cover because i had only used grease every 16h. I have no experience with this compressors at all. I was just a bit confused because you say if the motor gets slower than add grease. But i heard from GX when it slowsdown it is to much grease in. That is confusing me. You saying when the motor slows down, it needs grease. But GX saying when motor slows down it has too much grease. Oh man my english is not so good.

[@DREKOWICK69]

how long would it take to fill up a 77/4500>?

[@TargetForge]

From Zero or just a top off?

[@TargetForge]

It would also help to include the units with your values. Help me make sure my conversions are sound. You are possibly a paintball guy? So 77 cubic inches?

[@TargetForge]

Based on some assumptions, a fill on your pony bottle from 0 psi to 4500 psi would be just over 30 minutes. If you had a larger vessel and kept it at 4500 you could "cascade" fill, or get ~85% of the fill done in a minute or so and use the pump to finish the fill really quick.

[@DREKOWICK69]

@@TargetForge thanks, I think it is actually 77cubic ft if I am not mistaken

[@TargetForge]

@@DREKOWICK69 it might be better if we reverted to physical dimensions. What is the diameter and length of the bottle? Are you an Airgun guy? Or a paint ball guy?

[@jasonhughes3279]

How do you run the deadhead test?

[@TargetForge]

Hello, I have covered that test often on this channel. You can find a demo here: kzbin.info/www/bejne/gaCwqYGEacqWnLs at 16min:41sec if you want to skip right to it.

[@jasonhughes3279]

You mention it in several videos as you stated but never explained how you did it. I believe I figured out to just leave the test plug i. The end of the hose and run the pump to a specified level on the on board gauge.

[@bornagian1744]

Ur awesome. Great job

[@TargetForge]

Thank you!

[@jeffalessi]

I am curious about what parts the grease pump or grease pot is lubricating? Keep up the great work and have a most awesome evening!

[@TargetForge]

It enters the cylinders/piston interface. I want to say stage 2 and 3 only, but I need to check my notes. Will update.

[@jeffalessi]

It would be interesting to see the internal workings of the lubrication system.

[@freddybanuelos9039]

Will this fill a 6 litter scuba tank?

[@TargetForge]

Absolutely, fills my 12 ltr just fine. Add my coolant light and hour meter to make it even better!

[@freddybanuelos9039]

@@TargetForge sir… thank you so much, you’ve earned my subscription and likes 👍. I still haven’t bought one but , I been watching your videos . I really like this cs4 model .

[@jackmclane1826]

Does anyone know how this pump operates? There is what it looks like just a single pump cylinder in there. Single step to 300 bars is odd!

[@wruehl]

We do Jack, inside that "single" round enclosure are actually 3 progressive compression assemblies. Very clever design. Do not take it apart! Assembly is a bear. Go fly some pellets!

[@kkutube1972]

I am not getting audio on this video.

[@TargetForge]

Working fine for me, are you missing a channel on your playback?

[@kkutube1972]

@@TargetForge I am getting audio on other channel but this video, I don't get audio. Let me copy link to a different Microsoft Edge. hmm, that also don't get audio but thanks. I will try to figure it our. Base on comment, it is might on my end.

[@kkutube1972]

@@TargetForge It is working now. Not sure what happen, thanks.

[@kmom777]

Can you add to the auto translator Bulgarian Language

[@TargetForge]

You will need to reach out to KZbin for that. Creators do not control that.

[@angelisone]

it over 31 lbs!. anyone able to use a handpump & able to full filled it without getting a heart attack?

[@TargetForge]

It is STILL the lightest compressor I've seen that can run for over 5 hours and fill large bottles. If you only want to fill guns directly the CS2 and CS3 are great choices.

[@MightyRude]

I’ve once filled a 480cc tank to 250bar with a handpump, it took me half a day and I needed three days of recovery. I also use my handpump to fill an 80cc tank to 300bar (with a pump rated to 250bar) and it takes about an hour. Filling the 80cc to 300bar is doable but filling the 480cc to 250bar isn’t worth it.

[@lectro88]

Have you actually seen this unit reach 5k on dead head test. (I suspect someone like jason was overly optimistic on rating)

[@TargetForge]

I have indeed.

[@Jeeper1378]

My CS3 will do 5k, even my Yong Heng will, have blown burst disc but only one time.

[@carldodge8294]

dude acts like he is getting ready to collapse any minute.

[@TargetForge]

Dude acts like he wants to get banned from the channel...