Artemis CP2 Silencer modification + how your silencer works 

Great video ! Thanks for your work Tyrone . 👍👍

Great explanation!!

I will share my findings while experimenting with silencer: the vent holes only work effectively when placed in the back of a shrouded barrel with a good air stripper, the shape of the baffles does make a difference and the more funnel shaped ones turned out to be more effective in my investigations, the 4 baffle rule really depends on how the baffles are made and the power of your gun ... the more power the more baffles you can stack before you get diminishing returns, the final air stripper at the end of the silence also plays an important role ... incidentally maybe that's why the funnel shaped baffles work better as each baffle is also actin as air stripper. I have not had much success with PLA 3D printed baffles as they tend to shatter just with the shock wave of the higher power air rifles but might work fine with the kind of power the CP2 makes. Personally I think that the CP2, even with the tuning mods suggested by Tyrone, is still very backyard friendly with the stock silencer. I measured in pistol mode 104 dB unsuppressed and 89 dB suppressed: the stock silencer suppresses the noise by 15 dB and that is quite impressive for such a small thing. If you are looking for mouse fart quiet my advice is to get a phonometer and compare your results at each step making sure it is quieter rather then convincing yourself it is so. Keep in mind that human hearing loudness in not linear but logarithmic .... IE for you to hear something twice as loud the noise needs to be 10 times more powerful (about each 3 dB increase in noise level doubles the noise power) meaning that achieving 3dB better suppression already means that you doubled the gas flow capturing capabilities of your silencer and making your silencer half as quiet means that you are capturing the gases 10 times better.

Thanks. I am looking to buy one of these as I have the CP1. There seems to be a stock problem with them in S.A at the moment but one supplier is hoping to get stock next week.

Nice, I’m definitely gonna do this

Great video! Here in Sweden, the silencer comes without any baffles. Has to do with restrictions and license

Thank you. I feel a 3D print design coming on. Which I will share.

Tyrone great video thank you very much! Is there a lost of accuracy or a lost of power when using a silencer ? What is the most accurat pellet for the Artemis in your expirience? Best wishes mick

I didn't even try my suppressor I got it an did two easy mods that made it where I can shoot in one room an no one in the next room of my trailer heard a thing I put a disk of acoustic soundboard in the tip of the suppressor in the screw on cap with the main hole for the pellet an a few small holes around the main hole an in the big baffle just a hole for the pellet to go through that disk now the only sound there is , is the hammer spring hitting but I plan on doing the spring mods so there not as hard the hammer spring an the one that releases the air but over all this is a fun quite air gun .

Scotchbrite might work even better instead of the felt as is a very much looser weave. Maybe just then use a smaller diameter hair curler to accommodate the thicker Scotchbrite wrap, otherwise you May struggler to make it fit!! 🕳

Hi Tyrone, how do you stop the bolt movement flip when shooting the Cp1 pistol ? Couldn't find how on your videos

I have one layer of felt on the inside of the rings. and then put everything back. supper quiet, and supper cheap

Hi Tyrone. Do you confirm that the CP2 barrel thread where you put the silencer is NOT a 1/2 UNF and you need a special adapter if you wanna use a standard 1/2 UNF thread silencer?

It was really tough breaking loose the red lock tite from the barrell. A heat gun applied to the barell seemsed to work best. How do you separate the sections of the moderator? They seem to be really tight.

Bonjour Vidéo très claire et précise ….Mais où acheter le bigoudi ?

The 2 holes ? Did you shoot before the holes? And then After? Was there a difference?

Great video, your mods are a good mix of a baffle and a Weihrauch sytem silencer i think. It‘s sad that any kind of silencers are strictly forbidden in my country, had to buy a pretty expensive airrifle to dont disturbe people to much 😢😉 cause most 40 joule guns are barking like hell

before you fit a muffler check the crowning on the end of the barrel as bad crowning will play hell on a muffler!

Howdy Tyrone, man I dig your videos. I'm an ex south african living in Germany. I really need your advice. I'm a pellet gun tinckerer and I have just today recieved my Artemis cp2 in .22 or 5.5 mm caliber. I immediately inserted 2 rubber washers 4mm and stretched the hammer spring on my second teardown to 75mm with the 8 mm rubber washer setup. I ported the gas🎉 valve, the brass magody and barrels to 4 mm. Did the trigger etc etc...all the mods you did, I did exactly. However, the silencer does not open up on either end. I have used a blowtorch to heat up the threaded areas in case there was tons of locktite but to absolutely no avail will any end open. So I drilled 1mm holes near the end as you did exept I drilled 6 because, when using the silencer from the get go, the gun reached 430 fps.???..I removed it to check for rimming but there is none and without the silencer on, I'm getting 549 average fps at 10,5 od joules. Man...I'm really disappointed. There are no leaks near the pellet breach, I changed out the rubber O rings on everything and still, nothing like the 800 fps you got on your 5.5 mm CP2. Can you please advise me as to what the issue could be??? I warmed the 12g umarex gas bottles up to more than room temp. Still, really kak fps. please Help me Brother...🙏🏻

so, Tyrone..does the baffle "absorbtion" act to decerate the pellet...? so, silencers slow the pellet down...?? Thanks - love your stuff.

Would it be any benefit to drill the holes without doing the rest?

I can't unscrew my silencer. Maybe it's glued together? Left or right-hand thread?

I modded the spring...... I still can't shoot the gun in summer I've got valve lock any ideas how to fix it?

I have the Artemis Cp2 but I can't seem to open the silencer. I've tried pliers there is no movement at all. Any tips on how to open the silencer?

Barrel is too long will a shorter crosman barrel fit

Did you happen to measure the FPS before & after ?

6:06 I was hoping to hear you say "bigoudis" but I guess curlers are fine. Any silencing device is prohibed in kenada 😥

Does anyone know where I can buy that silencer from I’ve lost mine

Thank you for the video. I’m under the impression that you can’t remove the silencer from the stock Chaser rifle barrel. You obviously did. How did you remove it please.

Where can you order an extra silencer

Something I learnt today, on www.airgunforum.co.uk/community/index.php?threads/absolutely-gobsmacked.224030/ is that a CO2 will maintain 850psi (60 Bar) until the liquid has gone and you only have gas left which will be soon gone. Which means CO2 effectively has a regulator. Nice, but what has this to do with moderators? Well there you are, you have a nearly constant 850psi. Initially the pressure will be a bit too high and the valve will shut early so you have to shoot a few pellets until the airgun comes on-song but then it should be consistent until the liquid CO2 has gone. And for this reason it is perhaps worth waiting a few seconds between pellets for the CO2 gas to evolve from the liquid as it is not instantaneous. At one time my work entailed measuring pressure waves from military explosives ... When a CO2 airgun is shot (I don't think an airgun can be fired), the expanding CO2 drives the pellet up the barrel which drives the air in the barrel ahead of it forming a longitudinal sound pressure wave. That pressure wave goes into the moderator cones where it is compressed and reflected. That rebound should occur as the pellet is transiting the moderator thus assisting it on its journey. With the pellet away from the barrel, the excess spent CO2 is now trapped in the moderator thus dissipating and silencing its retort. This is not entirely different to a motorcycle exhaust system. If you simply want quieter you put sound absorbent material in the silencer. As you have done. If you want greater efficiency you arrange for pressure waves to be reflected to create a partial vacuum which scavenges the exhaust gasses out, and it's still quieter than taking the silencer off. And which gives our airgun pellet a few more legs.

Pourquoi vouloir bricoler ce petit modérateur de son ??? il fonctionne très bien comme ça !!! Quelle perte de temps !

You did the stupiest thing you can do with a silencer. A silencer does not only suppress noise, it is also an air striper for accurate shooting. You destroyed the silencer. Have you ever shot your gun with and without supressor???