Increase your fps of Artemis CP2/Diana Chaser - basically free of charge
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- เผยแพร่เมื่อ 30 ก.ย. 2024
- This is an instructional video of how to increase your Artemis CP2 fps. This is a simple process and with satisfying results.
It will cost you basically nothing to do this upgrade just a small hard rubber washer OD=10mm Thickness=4mm. These washers are available as a "tap seat washer". this can be trimmed to size with a sharp knife.
Enjoy the video and happy shooting.😉
link to final testing
• Artemis CP2/Diana Chas...
I actually got a longer spring do I still need to add spacer
A longer spring will have the same effect
Vinyl washer may be better and easier
Possibly, it doesn't matter too much it is just a spacer
Morning - it has just occurred to that the rubber spacer could be precision made with a 3D printer
Yes, absolutely an option
I did the tests with chrono before and after on 5 mm spacer, .22 cal riffle kit. In short words I don’t recommend it. Power is unstable. While on normal spring I had almost flat graph on any pellet, then on tweaked spacer I had more power firstly but at the end it was less then on stock. Started with 14.5J and dropped gradually What is more on regular spring I can shot 5-6 mags, then on tweaked spring only 4. Power increase wasn’t spectacular, actually the average was 12.38J while stock of that same amount of shots was 12.09J. I suspect that bouncing spring might bounce valve as well and open valve slightly at the closed valve position or so and it only wastes co2. So this mod does almost nothing. It might be maybe sometimes effective on increased chamber volume or mod to pcp or so. Otherwise it seems that time that valve is open doesn’t need tweaking nor does almost anything but lessens number of shots significantly, breaks stability and might break even valve by stronger hitting of hammer. I went back to normal and will maybe drill chamber a bit, but not touch port, again it probably will do nothing and is a one way ticket. Increased volume of chamber is reversible by making some tubing or spacer etc.
Thanks for your feedback and your assessment is correct. I will give more power but lower shot count. It is also less consistent than the standard arrangement. If you can balance it out with more volume in the valve it does perform better
hi it is 4,5 or 5,5 gun?? im see 4,5 ok.is this mod for more fps cronographed?and how it is make more fps?
@Zdenko Charakter it is 4.5mm and it had a 10-15% increase in fps please see the links below for the testing of the modification
th-cam.com/video/_2w32zq4ce0/w-d-xo.html
th-cam.com/video/ELH8HPiZVeA/w-d-xo.html
Hope this helps you, Thanks for the questions
@@African-Budget-Pellet-Gunner thanks .can you make book pages test before/after it is very acurate raw test.thanks
@Zdeno Charakter for sure I can do another test video I actually have another mod idea, so will do a before and after with that mod
Why next time just talk? Nice Video - and Music! Subscribed ✌️
Thanks, glad you enjoyed it. Yes, the new vids are mostly just talking
Hi upgrade CP2 has two ways 1. pulling the hammer spring from 75mm to 90mm and 2. put a rubber oring in front of the hammer spring. My question is can I do both?
Yes absolutely you can do both, might not get as much benefit though as if you add the drilling of the port
One thing, how is it built, that after hammer strike, the piston goes back and closes the valve? Actually hammer is pressing against the valve pin. I assume hammer is touching that firing pin but that small spring in valve is making piston close. But if bigger spring was too strong then piston wouldn't never close?I have fresh Chaser 5.5 ;) but I didn't disassemble it yet.
Well there is a small gap between the hammer and the valve stem, when the trigger is released the hammer flies forward and knocks the valve stem allowing the valve to open. Inside the valve it is the pressure from the gas which keeps the valve closed, yes the small spring does play a role in keeping everything alogned but not much in keeping the valve closed
I just tried a mod like this in my cp2 .22, you should have put the ring on the opposite side of the spring, in my case I created a ring of plastic of 5 mm wide and I inserted it in such black finger ,this increased the speed a lot but now there is a recoil produced by the strong impact of the hammer against the valve , I'm not sure if this is convenient to keep it permanent due the strong impact could damage the valve, plus this give me only 35 shoots, the spring btw is 70 mm long, I don't stretch it or anything like that
I think the ideal ring should be something like 3 mm wide or so
anyways I estimated now is shooting around 600-620 fps with 14 grains pellets in the first 15 shoots or so
I had to correct the elevation in the scope because now is shooting around 30 mm higher all the different pellets which I tried
and now 16 grains pointed pellets can pass through a plastic can full of 5 litres of water, something that before this mod they could not, and even now wad cutters or domed pellets can't can go through and out
I'm reconsidering the pointed pellets for hunting due to the high penetration power, thanks for the idea. of this mod ,btw
@Aldo glad the idea helped you. It will definitely add a little to the recoil it will also make your trigger a little harder/tighter because there is more tension on the hammer spring. Happy modifying and shooting. Just a note penetration is your friend if accuracy is dead on
And what about accuracy? That recoil actually is not an usual recoil and probably happens before pellet leaves the barrel. So whole pistol moves before the shot. Isn’t it?
Recoil can affect accuracy but mainly due to the shooter flinching because he is expecting the recoil. However with just 5mm of spacer the extra recoil won't be that substancial. Oh and the recoil needs to be consistent which I don't think will be an issue in this case
@@African-Budget-Pellet-Gunner thank you for response, I'll test it out eventually
@@JohnDoe-el5ir surely the accuracy will be affected of course due to the highest recoil of the mod, the whole pistol moves so I think for the cp2 I recommend to put a ring of 3mm wide in the black finger because it increase the power a bit but the recoil is not affected as using a 5mm ring
Was the diameter of your washer greater than 10mm initially and if so how did you cut it down? Does it need to be precise or it is enough that it just fits in and edges don't have to be perfect?
It doesn't need to be 100% precise but you do want the spring to at least sit level. The OD of the spacer is 10mm then it will fit inside the hammer. You will loose some shot count, between 5 and 10 shots and you should get around 7-10% fps gain
@@African-Budget-Pellet-Gunner thanks, I'll try to get hold of a suitable washer.
Hey man I don't think I can tell you how much I appreciate your videos
but can you please tell me how is this increasing your FPS
Sure, so basically what you are doing is pre-tensioning the hammer spring so basically when it is cocked or compressed it has more tension in the working condition. This then strikes the valve harder allowing more gas to get behind the pellet and then more fps
@@African-Budget-Pellet-Gunner ok thank you man🤙
Are you from South Africa because it looks so in your videos 😁
Yes, I am proudly South African, I live in Ellisras
So, is the trigger getting harder to pull with that mod ?
@Mark it will get a little harder but with the spacers you won't really notice it. You will feel it if you put in a much stronger spring for sure. I tried the PR900 spring in the CP2 and the trigger pull is super tough
So does this washer mod work along with the spring stretching or do them separate for the same results or does stretching the spring with the washer make it even faster? Just wondering. Getting the washer today might just be good enough though.
@Dan LaTour both the washer and stretching the spring will add to fps, and you can do the 2 together.
@@African-Budget-Pellet-Gunner Tyrone forgive me but I'm a little confused. I have a British 5 pence piece in my hand in the same position as yours at 3 minutes 29 seconds it looks exactly the same size ie about the width of our middle finger yet my coin is 18 mm and you say the diameter of that spacer is only 10mm??... BTW you've earned a new subscriber tonight
Not sure of the coin sizes but our smallest is 10c and that is 16mm outside diameter. The space inside the hammer is just over 10mm so you'll need something that size. Thanks for the sub
Hi Tyrone. Is yours a .177? I have this gun in .22 & wondering if the internals are the same? Many thanks
Hi David, yes mine is .177 but I believe the only difference is the barrel and magazine
@@African-Budget-Pellet-Gunner , ещё в подавателе...
@@igoregorow7122 if I am correct you are saying that the pellet probe(feeder) is also different, that is correct
Can Diana bandit grip be put on this air pistol?
No unfortunately not the diana bandit and diana airbug are interchangeable but the screws are swopped around on the chaser.
@@African-Budget-Pellet-Gunner Ok, thanks. Do you know does putting a longer barrel on bandit make it more powerful? What I was originally thinking was to order diana chaser with the longer barrel and interchange the parts with my bandit
@@African-Budget-Pellet-Gunner And also where I got the idea was Andy's Airgun Reviews where he does a swap with Artemis airpistols. Video called "PP800 and a PCP CP2 !!"
@mauriopiaatti8459 a longer barrel definitely will give more power. Yes, can use the chaser barrel on the bandit as long as it is the same caliber
Would these modifications work in the CR 600w?
Hi Brian, absolutely yes, the rifles internals are very similar
@@African-Budget-Pellet-Gunner awesome. I have just found your chanel. Was considering upgrading to the 900w regulated, but I am having second thoughts.. 😁
@briankruger3009 it's possible to upgrade the PR900 as well but if you have the regulated version just up the reg pressure and put a spacer in the hammer. But with the pcp you will have plenty power
How much did you increase by? You’re just guessing without a chronograph
Hi Bruce it depends how many of the mods you have done. If you just put in the spacer 4-5mm you can expect a 20-30fps increase in .177 and 15-25fps increase in .22
You do know if you just stretch the spring more it makes it very powerful instead of putting washers in there
@the merc yes you are correct stretching the spring will make it more powerful, I did make a video on that, so I currently have a combination of washers and stretched spring and opened up the transfer port. Thanks for your comment, hope you are enjoying the channel
And how many shots before the spring returns to it's original shape and your power returns to stock?
This particular spring I opened 4 months later and spring was still the same and I shoot a lot
@@African-Budget-Pellet-Gunner Thank you for your answer! So which of the two mods is preferable? Also if I go the spacer/washer way, is it okay to use a metal washer instead of rubber? Thank you!
And the chicken strips
How long will that washer last
@Ian Jacob I am very sure this washer will last very long as there isn't really wear that is taking place here. It is also a very soft spring. I have used similar washer on spring piston guns which lasted years. A steel washer of similar size could be used with similar effect
It will have a little debounce effect but wasn't designed for that. I have seen a debounce method done on the CP2 I believe it was using a piece of parachord attached to the hammer spring end cap and the spacer in front of the spring. The length of chord was slightly shorter than the open length of the spring. It did give more shots but I can't recall if it affected fps
You're welcome Marko, let me know how it goes. Where are you from by the wsy Marko?
Sounds good let us know how it goes when you do try it out
I’m about ready to modify my Chaser and have one question for you. Do you think that reducing the spring force on the valve would add to the power?
Very interested in your thoughts.
@Bob Andrews you can modify your Chaser, you won't be sorry. The nice thing about the mod I done is it is completely reversable. If you're not happy just remove the spacer, no harm no foul. To answer your question, there is 2 ways to increase the fps without having to make irreversible changes. 1. Increase the tension in the hammer spring or 2. Decrease the tension in the valve spring either mod allows for the valve to be open slightly longer, thus allowing more gas to pass through thus allowing more gas at the back of the pellet thus more fps. The mod I have done increases the tension in the hammer spring, it is quite a common mod which is done on the crosman 2240/2250, also some PCP's come with a fps adjustment screw. This works on the same principle, if screw it in, you are pre-tensioning the hammer spring which allows the valve to be open slightly longer.
@@African-Budget-Pellet-Gunner Thank you for the response! You said either / or. How about both? I have some lighter springs for the valve and might try it. No real reason for the power quest, just wanted to see if it could be done. BTW I have the .22 cal. & might try to hunt raccoons if I can get the FPS up a tad.
@Bob Andrews Yes, it is definitely possible to do both upgrades. You should just know that your shot count will drop considerably. With the mod I done, I had a 10% fps increase but a 25% decrease in shot count. If you do both mods I think you will be looking at a shot count of maybe 10-15 shots per co2 capsule. I will also try to do a video next week to discuss the fps mod possibilities. I also suspect your returns will start to diminish due to the pressure available in a co2 capsule. With regards to hunting raccoons I am not sure I think it may be a little bit of push. I have taken doves and squirrels with my current setup but nothing bigger than that.
@@African-Budget-Pellet-Gunner Thank you for taking the time to respond.
Since both mods are easily reversed it can’t hurt anything to give it a go.
I’ll let you know after I complete the mods, (in stages), once the weather here in Madison, Wisconsin warms up a bit.
Cheers
Bob
@ Bob Andrews sounds like a plan, I am making a fairly detailed video this week, think it might answer some of your questions.
I did this to my Diana Chaser in. 22 cal with the 19" stormrider barrell and it was shooting 14.3 crosman hollow points @565 fps and now its hitting 615fps. I have a video on it. G.Whitfield/TH-cam
@G Whitfield that is awesome and it will definitely work. You will enjoy my video coming on Friday then as well. I like your channel you have a new subscriber 😉
@@African-Budget-Pellet-Gunner looking forward to seeing it!!
I'm subscribed to your channel now too, I thought I already was...but I am now!
Thanks G Whitfield
Hi.. What's the size of the spacer? 20mm? Thanks
The spacer is 4mm thick and 10mm outside diameter. The spacer is installed between the hammer and hammer spring.
@@African-Budget-Pellet-Gunner 4mm thik is equivalent of a 90mm spring? 5 or 6mm thik is too much? What do you think?
@Filipe I would say the 4mm is about equal to an 80mm spring, I think 6mm spacer could be equal to a 90mm spring. If you are after more fps you can also enlarge the air-chamber hole, breach and transfer washer but once you try this it can't be reversed. Why do you want more fps?
@@African-Budget-Pellet-Gunner I don't want proply, just to understand the mechanics. I think 5mm thik it's OK. Thanks a lot
Hi Filipe 5mm will work great, good luck and keep us posted on your results.
Next time just talk
Thanks I will do so
I fell asleep half way through this.
@Peter D sorry it wasn't entertaining enough to keep you awake what would you recommend to keep you awake
@@African-Budget-Pellet-Gunner Sorry but it was too long and slow although the subject was interesting.
@Peter D Thanks for the feedback much appreciated I will try use it to improve my videos going forward
@@African-Budget-Pellet-Gunner I have done this mod on my cr600w and it worked well, thanks.
@Peter D I am glad it worked for you, how thick spacer did you put in. What was your increase in fps