"EDgun"I have nothing against Huma regulators, but I was a little bit surprised of the fact that people just having got the gun and having not any experience with it runs into changing some part of it, including the regulator. I would understand the "scientific approach" when a person make the research as:
1. Testing the gun with the manufactures parts in diffrent regimes.
2. Change ONE part and test again.
3. Compare the results.
4. Choose the best one and leave it.
In fact, it happens far out of that way, the first thing some of the users do it "Oh, I am going to buy a new regulator and install it!" If they are asked "Why?" I think the most common answer dould be "Well, people say, that would improve the gun..." Well, how can you be sure in the imrovemend if you have no idea what was before?
I am just wondering, not attempt to offend anybody!
No offence taken here either. Let me curve your curiosity Ed.
There is no surprise why people are swapping the OEM reg out for Huma kit. I dont think anyone are blindly buying the kit, the tests have already been done and the info is out there for all to see and make the decision that is right for them.
That scientific approach you speak of was months of work/testing and research when I designed these Huma kits, none of which is secret, all of the data is out there for everyone to see. Brian and others have contributed with independent testing of prototypes and giving me further data that can improve production models. In turn this improves your product and gives more happy customers.
Most of my scientific approach was directed at the Leshiy when it came out a couple of years ago, the major goal was a higher shot count but that came with better efficiency and lower noise as well.
This R5 kit is just an extension of that scientific approach as was the R3 power kit to get the 34gr JSB heavies up to speed. We are not re-inventing the wheel here, when I see the opportunity to make something better, then it is just in my nature to do so. What can I say? Im just a perfectionist living in an imperfect world..
In short as you already know, your plenums are too small to make good power from an efficient low reg setting.
Lifting your reg pressure to 140 to 145bar in the .30cal to get the 900 to 920fps (the recognised industry std of best accuracy/B.C figures and knock down power with JSBs) not only gets very loud but it is hard on the internal parts such as hammers valves, springs and O rings, it also creates a loud ping/hammer slap.
The Huma reg and plenum kit can be tuned to 120bar in .30cal std and 110bar.30cal long also in .25cal to get an easy 900f to 920fps with less HST.
Having your reg set that high on a small plenum also waists a lot more air than a lower reg pressure on a larger plenum tuned for a longer valve dwell time and less HST.
Thanks to your new digital gauge I can tell you just how much less air the Huma kit uses.
With your reg and the factory settings mentioned above, a capable tuner who knows what they are doing can get 2.5bar per shot with the R5 .25cal and 3.5bar per shot with the .30cal.
Now those figures by industry stds are not bad but by fitting the Huma kit and setting to the same settings mentioned above you can achieve 1.5bar per shot with the .25cal long and 2bar per shot with the .30cal std.
The figures get even better in the longer guns as you can slow the valve dwell down more and reduce the reg pressure even further in the longer guns.
What does all this mean? as you know, better efficiency, lower extreme spreads and std deviations, higher shot counts, usable flatter shot strings off the reg without the spike in velocities, a quieter more pleasant to shoot gun and less risk of breaking things or wearing things out prematurely.
There are many other advantages of the Huma kits in the Edgun including the smaller size meaning an even higher shot count as they displace less air in the air cylinders even with a larger plenum behind them. The additional plenum volume means you can if you desire push much heavier pellets much faster with reg pressures lower or equal to your OEM setting which as you know are already at the stressed end of the scale.
The Huma regs are much less aggressive on O rings and piston seats due to their shorter stroke and lower operating pressures. Infact all of my PCPs have Huma regs fitted and in the 5 years I have been using and servicing them for others I have never had to replace a single O ring in one!
So with no offence intended, if you want to try the future of efficient, powerful, quiet and reliable airgun regulators, flick me a text and I'll send you one to try.
Regards Phil
