Most excellent instructional and informative video Matthias! I am very happy that you did a "before & after" comparison so guys can actually see just how much they may benefit from adding one of these new FX Power Block Kits - about 20 ft/s. And then by adding a longer 800mm barrel they can gain an additional 10 ft/s. For a grand total increase in velocity of approximately 30 ft/s with the new kit and longer barrel. Now guys can honestly decide if $320.00 for a longer barrel and $117.00 for one of the new FX Power Block's is worth 30 ft/s more velocity.... All the best, Chuck
Hi chuck , thx for the support 👍 I wanted to add the before and after in the video to show the benefit of it . But my current tune in 22 cal is pretty modest with a regulator pressure of only 138bar and I don’t know if that is a true representation of the added benefit ( at least the minimum 😉) I suspect with a more higher regulator pressure you can gain more with the 800mm , as the added length in the 800mm barrel could benefit from more air behind the pellet/slug My gun was tuned not to waist air in the 700mm and the extra 100mm doesn’t have enough air behind the pellet/slug to propel it more then what you sa in the video . If I would start with a 700 tune that would spill air when the projectile left the barrel the jump with the 800 would be more significant. Hope my explanation makes some sense 😉
Yes you will have a lot of fun experimenting with your new FX Power Block Kit... I currently have Elsa my old .357 Impact MKII tuned to shoot the new Hades 77gr pellets at 1005 ft/s with my Huma Regulator set at just 133 Bar...that amounts to just over 172 ft. lbs. of energy. So I personally don't need one of these new FX Power Block Kits but I am glad to see that FX did come up with a way to correct their mistake of increasing the size of the M3 plenum to 720cc, which actually gave the M3 rifles a lot less power instead of more power and made them almost impossible to tune for more power. You can see Elsa on RU-vid at chuckster636 - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-zMHRctLGHTU.html
Perfect timing for me. I was considering getting a power block installed on my gun while it's in the shop. (Had to replace the safety screw). Was considering it but now, I'll keep my 25 cal the way it is. Shooting 30 grain slugs @1040 fps with a 600mm barrel with room to tune it for more power. Havent added any slug kit or barrel sleeve. For 20 fps more, I'm good. I was thinking the block would boost it up by 100fps or more. Glad I didnt give them go ahead. Besides I normally shoot my gun @ 925-975 fps. Just figured it would be good to have the extra power, but 20-25 fps more, its not worth it.
@@anthonygillespie7233 just know that the numbers in my video might not be a good representation of what the power block and 800mm can do . I had a pretty modest tune on my 22 700 setup not waisting air when the projectile leaves the barrel , so I don’t push enough air to get the benefit of the 800mm . By returning the gun I expect to get at least 100fps extra . Offcours on different calibers you can get different numbers with the same regulator pressures and same weights due to the aperture in transferport size across the different calibers
@@Airbuks True that. I just like to know if my gun is lagging in performance but for the fps I get and shot count with a 600 mm barrel, I thinks it's right up there with the others. I'm satisfied with the tune and power I get. Actually thinking of getting a 30 cal 700 mm barrel kit for either the impact or 500mm for my crown I only have one 30 cal and its the hatsan hercules bully, but I want another 30 cal just to have for backup. Might just buy a whole new setup from FX in 30 cal.
You have perfect timing for this video, I just got shipping confirmation from Utah Airguns that my M3 Power Block/Plenum kit is on it's way! Thanks for another Great installation video !
All good things regardless of if you shoot high power or not on the older MK1 & MK2 . Helpful instructional video for those of us who like to do our own work .
Thank you for such an outstanding video. Extremely detailed and accurate information throughout the entire video. Outstanding Masterclass. Thanks again.
Awesome video again finally got my 800 mm Barrel kit And power block about a month ago but I got the 800 mm Barrel kit today and I should get my 700cc bottle tomorrow the next day hopefully it performs like your gun it looks awesome buddy I thought the 800 mm Barrel was going to be very long but it's only like 4 inches longer so it doesn't look that bad with a 500cc tank at the moment but I will be installing the 700cc tank thanks again it's always a pleasure watching your videos thank you
In the beginning I was afraid of the length aswel but even with a 580cc bottle it still looks nice in my opinion. The only thing I find a must and FX has to provide is a different endcap for the shroud so you can slide the shroud back over the cf tensioning tube . It looks way better like that and helps with dampening sound aswel
Great video, you really explain everything well. I’ve used your vids in the past to do my upgrades. Side note: anyone know where I could get a mkII fastener kit? I have some fasteners that need replaced, they’re so small and easy to strip.
I would like to leave a fix to FX. Can you provide oring so the person doesn't have to reuse used orings? I think they were just doing the basics to provide new orings.
Great Video - Thanks for the info - especially the improvement results. I hope you will do a tuning & accuracy test with the set up. What caliber is the final build 22 or 25?
Thx 🙏 yes I will go out next with e few different guns to make some in the field video , but first I am going to enjoy some vacation time with the family 😉
This is an awesome instructional video. Can tell us more about the 3D part you printed, I like the thicker shroud look to. Is this a part you sell or can you send out the 3d print data? Thanks.
I can share the file if you want but the tolerances on different printers might be different so you might need to sand or it could be to loose . Mail me at Airbuks@icloud.com
What kind of o ring is in the new plenum since the old valve hosing had 4 orings that sealed how does the new plenum seal. Also when you buy the new kit 4 o rings are included but they all go into power block no orings came to put in plenum.
Great video! One question, my power block kit came with the O rings unmounted and with it also came a small rubber ball, can you tell me where it goes please?
The rubber bal goed into the breech block where the magazine goes . There are some holes where the rubber balls fit . The other orings go inside the block
With the number of MK1 & MK2 out there it’s no wonder it’s taking so long to get these upgrades . My Impact isn’t leaking so I wouldn’t want to convert until I have a leak in the system . I’ll order the parts and instal them at that time .
Great video, thanks. Noticed you cocked the rifle before putting the air tank back on. Is there a reason you need to do that? Just curious on what that does/does not do? Looking forward to some follow-up on your shooting results with these additions.
The reason why I do this is that you put pressure on the valve and properly close/seat it in the valve seat so no air cal leak out as the plenum is empty and doesn’t have air enough to close it if by itself . Once the plenum is filled the pressure holds the valve closed
@@markusscholl4958 🤔 mine was a normal liner in 22 and swapped it to a heavy 🤷♂️ maybes they have changed it as most people shoot slugs out of the 800mm
Hi! Can you comment a bit on what the sound does after installing the 800mm barrel? Is there a noticeable increase in noise? If so, how do you solve it? Did you change moderator?
It depends a bit on the tune you use , I think it’s louder then with a shroud. At the moment I modified a shroud to fit over the cf sleeve so I can use the original shroud on top of it . I find it looks better 😉
@@Airbuks Hi, got the 800mm barrel with tensioner kit in the meantime, and with the stock FX/Donny FL moderator, even shooting at "reasonable" reg pressures (100 bar second reg) it became tremendously loud (i.e. impossible to shoot in the backyard). I ordered the Huma Air 40 long (5 modules?) moderator and the problem was solved!!! the gun is now quieter than before when it was shooting pellets out of the 600mm barrel with FX moderator.
@@karlhuts78 yes the 800mm barrel doesn’t have the reflex shroud and just uses the CF tensioning tube . The original shroud aks as a expansion chamber to deal with a part of the air and the moderator does the rest . Huma is indeed a great choice to quiet it down 👌
@@JuanDoe1776 eagle vision is also always a good choice! But element optics has there own range of mounts aswel , if you would opt for that I would always advise the high ones
Not jealous, or trying to knock your channel. You put out some good info. Im just curious why not up the regs, open the valve up and I'm sure you would get more than a 25-30 fps increase. I have a 25 cal, 600mm barrel, no PB, slug kit, just straight from the factory and I can get 1040-1050 fps shooting 30 grain slugs. My tune is 1st reg on 160, 2nd reg on 130, valve on line 4 macro on 15, and micro on 4.
Yes offcours you can get more out off it , as I mentioned in the video I am using my current tune which is pretty modes and probably doesn’t give a good representation. Since I always tune my guns not to waist air as the projectile leaves the barrel the 800mm barrel can give more once I retune the impact .
@@Airbuks Just curious as to your shot count. I get 3 mags or 75 shots with the tune I mentioned. I'm always interested in what I can do to upgrade my Impact if it fits my narrative.
@@Airbuks Alé bedankt ik heb het snelopgezocht en de hammer was er nog... helaas met de slug power kit erbij maar geeft me niet heb die dan toch maar gekocht.
Hi, see if you have some insight. I aas shooting very consistently 23g 980fps reg at 150bar hammer still had adjustment left. I installed the power block now max out velocity at 850fps at 120bar, any higher the velocity drops. Its like there's not enough hammer weight but it was plenty before the power block. No other changes, same port, probe, barrel, hammer, hammer weight. Only difference 720 kit and power block. Any ideas. Thanks
Hi it sounds like you are overpowering the valve at the moment , first try to back off on the hammerspring adjustment and regulator pressure to see if you are able to increase the velocity,
@@Airbuks I've started from 90 bar increasing reg and hammer together, (increasing hammer to max out performance for the reg pressure, then increase reg 10 bars and increase hammer again etc etc etc) Just can't get it above 850fps??
@@honda16001 have you put the C1 to the correct measurement of 6-6.5mm ? When you installed the power block have you installed also the softer valve return spring ?
@@Airbuks it hasn't come with a softer spring, it has the standard return spring. Surely it should still get upto 1000fps with a 23g slug. Ill try and find a softer spring 👌. Yes, the hammer seat is set to 6.2mm. Cheers for replying 👍
Hi mate, the power block is a evolution of the normal older block and is drilled out bigger and better optimized for airflow allowing more power being archived
@@Airbuks thanks for your reply, I have the power block, with the 700mm tensioner kit installed already, just got my 800mm liner, will use the clamps from the 700 kit.
No not at all , just know that if your MKII doesn’t have the power plenum 720 yet you will need a different kit with some extra parts like a diff valve rode etc
@@Airbuks thank you, I accept that, I just bought my barrel tensioner on Europe airguns, in the next to weaks it will arrive, and i want to put the original shround on because without him the gun gonna be to loud.
In my current tune yes but that is very modest and not optimized for the 800mm barrel . The power blocks full potential is at higher regulator pressure 160+ My current tune is optimized to use just enough air for the 700mm barrel so when the projectile leaves the barrel the push off air stops and has no spills. So after the holidays I will return the gun to optimize for the 800mm . I suspect to get a gain of 100fps
Might be worth explaining to people that it’s bad for the gun and front Reg to remove the bottle with over 100 bar in it. It can put pressure on threads and they will eventually strip, sending your bottle flying.
I have been doing it for over 5years without any problems. The amount of times I took off the bottles to rebuild the guns is a lot. The key is to have enough lube/grease on the threads and not to cross thread them
In my current tune yes indeed but I was only using a modest tune ( 138bar )not waisting air , the real benefit is with higher regulator pressures. I think I will get a 100fps more if I push the reg to 150
