So I want to clear some things up about the Huma regulator in Edguns and why it exists. This project and my introduction to Huub (Huma) came from Phil in New Zeland. Phil for those don't know a super talented machinist (makes his guns), loves high-quality stuff and is pretty good airgun smith in is own right. Phil is also the EDgun representative for New Zeland and Australia. Phil had drawn up a new regulator for the leshiy to reduce the displacement inside the air tube. He had thought that this might add a few more shots to the gun. Ed's regulators are perfect in function, but they are larger in size and displace more volume Ed makes stuff that will always work in almost any condition. It is simple but efficient, so it appeals to both the novice and expert. Huma regulators were used in this system because of the small size not because Ed's regulators were faulty. Smaller size means less volume displacement and that in turn gives a higher shot count. The Huma also has the added benefit of having an adjustable screw with a corresponding bar marked tape along the top. The pressure markings is useful for those who wanted to adjust their regulator to get the possible shots from the Leshiy through synchronizing the hammer spring and regulator. Soon after the Leshiy project completed Phil introduced me to Huub, and I began carrying the Leshiy regulators.
A few months later Phil called me and said that the Leshiy was gaining popularity in the UK and that Huub had several requests to make a 12-foot-pound kit for the gun. Phil and I shared notes, spent hours on WhatsApp comparing data and tweaking the kit. There were some mistakes in the beginning, the first kits were sent out with Ed's high power hammer spring, and we were blowing through valves. A couple of R&D springs and we found the right one. The UK airgunners needed this kit because an improperly set regulator, hammer spring and plenum volume can spike speed when it falls below the regulator setting. A speed spike can land the owner in trouble with the police. This 12-foot-pound kit prevented spiking and added an insane shot count to the gun in 12-foot-pounds. The EDgun Leshiy as a result of this kit has become very popular in the UK. Most of the users in the UK are on the Facebook Edgun Leshiy owners page (come by and say hi).
Huub he had sent me some Matador Huma regs to try. I placed the Huma Matador regulator in my R3M matador and noticed that I needed to turn down the regulator pressure to shoot the same speed I was with my OEM regulator. The original R3M Edgun regulator set at 130 bar, 130 bar on the Huma added 15-20 FPS without changing settings. The original Huma/Edgun set up required you to remove the Belleville washers and piston from the edgun regulator and screw the Huma on top. I called Phil and asked him if he had ever noticed the spike with the Huma placed in the EDgun. Phil replied that he only used Edgun OEM regulators. We extrapolated that the small space that existed after removing the washers and piston was acting like a small plenum. I asked Phil "do you think we could make this shoot 34-grain JSB without a lot of regulator pressure?". Phil told me "give me a day or so and I'll mock something up for you." Because the Huma is a tiny regulator, we were able to use the space between the atmospheric breathing hole located on the air tube for a plenum extension. The plenum extension added needed volume of regulated air that would allow us to keep the regulator pressure low and still add about 15 to 20 foot-pounds without adding regulator pressure About 10 days later a plenum extension was in my hand turned on Phil's lathe and we were back on Whatsapp every night till 2 In the morning. My wife was very unhappy to say the least. The sound of 1000's of 34 grain JSB smashing a pellet trap in my garage was not her favorite thing. After about a month of testing the Huma, Edgun power plenum was born.
When we had to test the kits, the 34-grain JSB MKII was pretty new, and everyone wanted their guns to shoot them. I knew that the R&D we put into this system would also transfer to the R5 system with some small modifications. Ed decided to change the transfer port on the R5/R5M/Lelya to a rotary system that breathed better than any airgun I had tested before. The new system was super exciting for me and the first moment I got the R5 I showed Phil the system, and we began working on a power plenum to push more power at a lower regulator setting.
I don't sell Huma regulators because they are better than Edgun regulators, nor am I selling them to give you a fake upgrade. They serve a specific purpose for those who want to modify the guns power without changing anything from the OEM design. The most important thing to me was the gun not altered from the original design. Ed made a super reliable gun and to change the OEM configuration would possibly detur from the reliability. So you get a power upgrade without having to drill, screw, weld or perform some other operation to your gun. An Edgun that placed back to OEM settings maintains the value of the EDgun should you want to part with it later
Here are some videos explaining the system
https://www.youtube.com/watch?v=IEh39766JEE
https://www.youtube.com/watch?v=6QYCnXXUykw
https://www.youtube.com/watch?v=XbvpQTF2jHc
https://www.youtube.com/watch?v=ks4akgfSR70
