New compressor?

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   I sold my GX CS4i today. It was quite OK, and did the job. Was a great wee pump.
But...I really didn't need the high psi it provided (5500psi) when I only need 3200psi. Plus I wanted more air flow (to charge quicker so I can fill mates cylinders too).
Thought about this over the last few weeks.
Think I'm ordering a Hills Evo 310 tomorrow. They do make one that only goes to 210 bar which would be fine (for now). But maybe one day I'll get a high power PCP, and then I'll need the 310 bar jobbie.
Can't find a Hills Evo in NZ or Aussie.
The Aussie agent will take the money and have the Hills delivered from UK to me in NZ, but it's cheaper for me to deal direct with Hills UK.  
Thought I had a rerfurb Coltri sorted but very hard to pin down a delivery date, shipping cost, and if the pump had any fittings attached/supplied with it. Too hard, and wasted 3 - 4 weeks over it already.
Gave up, too hard...will get a new Hills instead.
Or...any other ideas before I pull the pin tomorrow?

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Grey Kiwi Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 09 Jan 2022 Location: Richmond Status: Offline Posts: 43	Post Options Post Reply Quote Grey Kiwi Report Post Thanks(0) Quote Reply Topic: New compressor? Posted: 16 Jul 2025 at 9:42pm
	I sold my GX CS4i today. It was quite OK, and did the job. Was a great wee pump. But...I really didn't need the high psi it provided (5500psi) when I only need 3200psi. Plus I wanted more air flow (to charge quicker so I can fill mates cylinders too). Thought about this over the last few weeks. Think I'm ordering a Hills Evo 310 tomorrow. They do make one that only goes to 210 bar which would be fine (for now). But maybe one day I'll get a high power PCP, and then I'll need the 310 bar jobbie. Can't find a Hills Evo in NZ or Aussie. The Aussie agent will take the money and have the Hills delivered from UK to me in NZ, but it's cheaper for me to deal direct with Hills UK. Thought I had a rerfurb Coltri sorted but very hard to pin down a delivery date, shipping cost, and if the pump had any fittings attached/supplied with it. Too hard, and wasted 3 - 4 weeks over it already. Gave up, too hard...will get a new Hills instead. Or...any other ideas before I pull the pin tomorrow?

Mintie Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 18 Feb 2017 Location: Hawkes Bay Status: Offline Posts: 58	Post Options Post Reply Quote Mintie Report Post Thanks(1) Quote Reply Posted: Yesterday at 2:18am
	Honestly I've been running a Yong Heng for the last few years now and it has been fantastic, it fell off the bench when I first got it (my own stupid mistake) so I purchased a second one expecting this one to fail but it has been 100% reliable, and I've put a fair bit of use on it. Landed they are about $1000.

Grey Kiwi Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 09 Jan 2022 Location: Richmond Status: Offline Posts: 43	Post Options Post Reply Quote Grey Kiwi Report Post Thanks(0) Quote Reply Posted: Yesterday at 10:21am
	I did look at the Yong Heng, and also considered the Tuxing twin cylinder job. But some of the reviews had me worried. Things such as folks keeping a 2nd YH on hand in case the first one blows up again, etc. It seems that with China made you might get a good one, you might get a dodgy one. Bit of a crap shoot. But the Hills just seem to be good straight out of the box. Edited by Grey Kiwi - Yesterday at 10:23am

Grey Kiwi Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 09 Jan 2022 Location: Richmond Status: Offline Posts: 43	Post Options Post Reply Quote Grey Kiwi Report Post Thanks(0) Quote Reply Posted: 21 hours 4 minutes ago at 6:56pm
	Thought about it all overnight. Ordered the Hill Evo 310 today. It will outlast me for my projected future shooting life, and then I can sell it on here to one of you (maybe 8 years time!). It will be a lot less drama for me compared to the CS4 as no water cooling, or grease pot worries now. Hope I made the right move?

Pauly5 Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Moderator Joined: 11 Mar 2013 Location: Titahi Bay Status: Offline Posts: 1576	Post Options Post Reply Quote Pauly5 Report Post Thanks(0) Quote Reply Posted: 4 hours 5 minutes ago at 11:55am
	I was keen on a hills, and a local gun shop was considering being an agent, but never did so I got a GX cs4. Prior to that I had a nomad 2. If I wasn't capable of taking it apart to repair it, it would have crapped out on me a long time ago, but I made the repairs and it kept running. The nomad is still running for the new owner. It's things like check valves that cause issues.

Grey Kiwi Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 09 Jan 2022 Location: Richmond Status: Offline Posts: 43	Post Options Post Reply Quote Grey Kiwi Report Post Thanks(0) Quote Reply Posted: 3 hours 12 minutes ago at 12:48pm
	Same with the GX CS4i. You have to keep the check valves clean on them too. The Evo 310 is similar to the CS4 in that it uses silicone oil to lube the piston (the CS4 uses silicone grease and 'eats' that during use). The Evo 'eats' the oil during use, but sparingly. It also has the same idea of silicone rubber 'rings' as the CS4 does. For me the slightly greater air output and less high pressure are fine. I only go to 200 bar on the 9015. Ask me in 5 years time if I'm still happy. I'll only be 83 then, so will be still around and kicking.