HFT 500 unregulated anxiety

I have no working knowledge of PCPs at all but I could understand an unreg'd gun through it's sweet pressure range being more consistent than a reg'd gun IF the reg'd guns regs are not totally consistent. I.e. Would expect cylinder pressure to fall gradually as gas is used during shooting, so fairly consistent between shots, where-as if a reg filled some chamber to 105bar on some shots and 115 bar on other shots the unreg'd gun might be more consistent during (say) a set of 5 shots.
 
I have no working knowledge of PCPs at all but I could understand an unreg'd gun through it's sweet pressure range being more consistent than a reg'd gun IF the reg'd guns regs are not totally consistent. I.e. Would expect cylinder pressure to fall gradually as gas is used during shooting, so fairly consistent between shots, where-as if a reg filled some chamber to 105bar on some shots and 115 bar on other shots the unreg'd gun might be more consistent during (say) a set of 5 shots.
yes you pretty much have it, an unregged gun working say on a 220cc cylinder or bottle wont change much pressure over a few shots but a regulated gun has to keep a tiny say for example 12cc plenum at a certain pressure as best it can each shot, some regulator designs react quicker than others but they all wear and lose consistency with time/use..... The more complex you make something the more there is to go wrong 👍.
 
To throw a spanner in the works too I also find my regulators have sweet spots/best working ranges from certain fill points to before drop off.
 
Have to say that I hear a fair amount of whinging about replacing duff regs up at the club. So glad I went for the hft500.
 
Next question, XTi barrel, or the older type?
I have shot both side by side and in theory the XTI barreled version should be better (stiffer) but I couldn't come to a conclusion as to what was the better choice.
As you may already know, no two barrels are identical and the original LW barrel was a stunner.
The barrel on the XTI version however was brand new and mine has had probably 20,000+ pellets through it, so it was difficult to assess in real time.
So really the jury is out. I don't consider AA sell bad barrels, just some are better than others.
So I guess it's your call..... Good luck. 👍
 
The main telltale will be the guage, it would be after the reg, so will only ever show reg pressure, usually around 100bar. The other will be a small breather hole in the underside of the cylinder, around 2.5” from where the cylinder meets the valve body. You’ll need to take the action out of the stock to check that.
Reg goes from 200 down to 100 in normal use, so I guess it's just spookily flat on the "curve" (y)
 
Look on th + side , it is one less thing to go wrong
Just look at the amount of threads alone on this forum nevermind others
when they are good they are good , but many seem to go south and require fixing, exactly the conversation i had today with my rfd.
So many rifles being sent back. Even jeffsky talking about changing his in the new XTI.
 
I shoot an unregulated HFT500 with an XTi barrel. I actually ordered one with the original barrel and didn't realise I'd got the XTi until after I tried it.
No way it's going back. Most accurate thing I've ever shot
 
That’s the anxiety done away with. Thanks everyone. Time to take the plunge me thinks. 😁👍

Partly due to not knowing the mechanics of how an unregulated gun controls air pressure, whilst I understand how a regulated gun can. If that makes sense.
If youve got the smarts to understand how a reg works, a little bit of reading and im sure you'll get the jist of an unregged.

BTW, ive never known of an unregged rifle to have a reg failure😉
 
I’m looking into buying a HFT 500, but the one thing that I keep pondering on is that it isn’t regulated. I can only compute in my tiny brain that this will be an issue, is it? How can it be so good without a regulator, obviously it is, I just need to give my tiny brain the reassurance it is looking for.
I'm with you completely. I would like on and if I do I will have to put a reg in it. I dont understand how putting a reg in it can spoil it?
 
What makes you think a regulated gun is better?
Why wouldn't it be? Logically. It's presenting a consistent pressure to the valve for every shot, so every tap on the valve should release the same sized slug of air. Ipso facto more consistency shot to shot?
 
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I don't recall ever seeing another unregged gun with this kind of performance, which leads me to ask - has someone regged this?

If anyone can post a picture of what to look for in a regged one I'll check it out next time I see it as this is kind of too good to be true?

Unweighed pellets

View attachment 956442

10 shots with weighed pellets.

View attachment 956443


If it's been regged, the original gauge will only read reg pressure.
Chances are if it's been regged it will have had a gauge and quick fill put on the front of the cylinder.

I've got two HFT 500s, one regged, one unregged. The only advantage of the regged gun is it's fill it to 200 bar and forget about it. 👍
 
Why wouldn't it be? Logically. It's presenting a consistent pressure to the valve for every shot, so every tap on the valve should release the same sized slug of air. Ipso facto more consistency shot to shot?
And when (not if) the reg fails?
 
Because Air Arms got it right! Over many years of making unregulated guns and input from experienced airgun engineers, along with the drive and determination of Bill Sanders it was spot on as far back as the S300/310.

They never seem to have got it right with the regulated guns, but unregulated, as long as you understand the limits of the sweet spot, normally 170 down to 110 bar.

Value for money wise and ease of maintenance, you can't go wrong with the HFT500.
Same as my high to low bar as my CZ S200
 
I'm with you completely. I would like on and if I do I will have to put a reg in it. I dont understand how putting a reg in it can spoil it?

It doesn’t, as long as it’s a well designed and made regulator. The issue is with fitting regulators to some guns, such as the Air Arms S Series (HFT500) they’re not easy to set up and take some work to install. Even regulated gun have an optimum setting and aren’t always correctly set up from the factory. It took me 8-9 months to work out the regulator setting parameters for the HW100 models and calibres. Even then, when I fitted a Lane regulator in my HW100 20 and removed the factory set up, the regulator setting parameters were lower and outside the parameters, it wasn’t such an issue as I was only dealing with one gun.

Luckily we’ve had the Lane tutorial videos and they’ve helped and guided many of us, allowing us to understand much more about regulators.
 
It doesn’t, as long as it’s a well designed and made regulator. The issue is with fitting regulators to some guns, such as the Air Arms S Series (HFT500) they’re not easy to set up and take some work to install. Even regulated gun have an optimum setting and aren’t always correctly set up from the factory. It took me 8-9 months to work out the regulator setting parameters for the HW100 models and calibres. Even then, when I fitted a Lane regulator in my HW100 20 and removed the factory set up, the regulator setting parameters were lower and outside the parameters, it wasn’t such an issue as I was only dealing with one gun.

Luckily we’ve had the Lane tutorial videos and they’ve helped and guided many of us, allowing us to understand much more about regulators.
Ah, yes, I can imagine throwing any old thing in any old how would make things worse.
 
Ah, yes, I can imagine throwing any old thing in any old how would make things worse.

A lot worse Matt, there are regulators out there that are hard to adjust to the exactly correct setting and also go out of adjustment very easily.

The original Ben Taylor reg used in the Rapid MK2 and derivatives and later the early FX’s are a great design and have stood the test of time.
 
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