@@bigjsoutdoorsairguns9007 Okay, here's the list of o'rings that I have used several times in my .177 & in my .22 Chasers,... I have looked into different materials but I think the basic black Buna or Nitrile o'rings are probably best. I will list the "cross section" (CS) first which is the thickness of the o'ring & then OD x ID. First will be the all important CO2 seal which is a custom seal but I have tried many sizes with varying success,... Even tried a flat round rubber washer but it didn't last long. I tried up to 3mm cross section to get a bigger seal area on the CO2 powerlet but then the probe to puncture the powerlet doesn't reach to pierce a hole,... 2mm to 2.5mm works but I have so far used 78 powerlets on one 2mm o'ring & it still works fine & you don't need to crank down very hard on the end cap :) CO2 seal (under the threaded ring): 2mm CS - 9mm x 5mm (or 2.5mm CS - 9mm x 4mm but it is harder to puncture the powerlet) .177 bolt seal (in end of barrel): 1.5mm CS - 8mm x 5mm .22 bolt seal (in end of barrel): 1.5mm CS - 9mm x 6mm Barrel Port seals (2) 1mm CS - 9mm x 7mm (tight fit) Brass Port seals (2) 2mm CS - 10mm x 6mm Inner cylinder seal (behind the CO2 inlet/puncture probe) 2mm CS - 8mm x 4mm Cylinder seal (behind the threads to seal the 2 halves of the cylinder): 2mm CS - 14mm x 10mm This works fine but it is small & is stretched thin to fit so after taking measurements I would like to try 1.5mm CS - 16mm x 13mm because it needs to be thin. Let me know what you think, Cheers.
@@davidyummus6259 Thank you thank you thank you sir! I am sure it was a pain typing all of that out. I greatly appreciate that. I took screen shots so I can save them.
Fantastic video! I am brand new to these but whatever I am getting into I need to find the real deep dive how to videos about the topic, by the experts. I'm going to be a big Diana enthusiast, I know it. Right off the bat when I realized what these were and saw the price, design and build quality, I ordered 2 Chaser Pistol/Rifle kits. This is pretty much the most/best pellet gun for the money, from what I am seeing. It will fit right in with my 2240 and P1322 and similar Crosmans and my handful of other very simple, but high performance and well engineered air guns and less lethal launchers. I will contribute back knowledge and videos for sure. (I also like Gamo Spring Magnums, Hatsan 125 Springs .25s, First Strike FSCs and Pepperball VKS in .68 cal (riot balls.) Now I am also a Diana guy. Thanks man for giving me my first in-depth lesson!
Thanks for the valuable Chaser complete teardown and assembly info. There's probably 10k Seneca Aspens out there needing a video on fixing the integrated 3 stage pump, and modifying it to last reasonably. Somebody said the inner tube doesn't get lubed, so the Orings can't slide.
Sometimes I take a new air gun or less lethal launcher apart and clean and lube and debur and do other things to it, before even firing it once. In most cases the lubrication is not nearly as good as one can do with a careful prep. Certainly some things get put together on the assembly line with insufficient lube and other things, especially those that are internal and hard to validate via QA. Not saying Diana is not top quality .. just saying in general. Often we can use different types of lube in different places, often more than the factory, but I know of one example where you want less than what the factory does. So it is a great idea to do the research and not use an air gun etc too much before doing a teardown and full break in RE-lubrication. And other little mods, deburring, maybe a little polishing or focused break-in of mating surfaces can be done. The best part is you get to know the gun and start to become one with it, in a sense. Develop that muscle memory etc.
This would be a okay gun if it didn't have the peep hole and trigger housing welded on this makes it almost impossible to make it hpa you can get parts but you have to no what other air guns use the same parts hint for similar parts. A compeny with a x in the name. dawn china. Hint A air gun company shaped like this🔼 air can you can get most of the parts. If you really need them. Unfortunately if you want a hpa chaser carbine with power a dana storm rider taken out of stock with the chaser grip would be the easiest way to make a real hpa carbine powerful. 💯👍👌✌️
Yeah I wish that trigger frame/housing wasn't welded on. I have exchanged emails with Snow Peak and they told me to get a hold of Pyramyd Air for parts. Which as you probably know they do not offer much. So I am relying on Bagnall & Kirkwood for parts. I did convert a 22 rifle kit to HPA and it is a little ripper! Lol Really accurate and fun to shoot. I would still like to get my hands on a Stormrider. I will at some point. Hey I also saw that you commented on my Armada video and the P17 video. When I click on them TH-cam won't let me see them. This has been happening a lot lately. I just happened to catch yours but I wonder how many I am not seeing at all. Anyway, thanks for watching the videos man, I do appreciate it
Thanks a lot for disasemble video. That make me brave to disasemble my Diana and have allready progress with :D I install recoilspring from UZI in the valv (same as original .97mm wings). Cutt down from long uzi spring ca. doble the langth as original Diana valf spring (X2 Diana valv langth). Now i can shot 70 shots with same power. Shot anyways at home, so from power nice for home shooting :D Second step, i try make Diana quitter. Silencer install, but anyway noizy. May be shroud the barel and surpresor with duktape...
Glad that you found it helpful. That's why I make video's like that. Keep working on those modifications. These guns are a great platform for modifications. Thanks for watching the video. I do appreciate it!
Vladi 25%, I watched videos on building moderators, then made one with the cones for an Aspen. Works fairly well. I have no lathe, only the usual electric hand held tools.
Thanks and nice job . I just snapped the bolt handle off my Bandit and need to fab a fix. I'm assuming the process of getting the bolt out is about the same. Appreciate your efforts.
How is it going with the bolt replacement? If mine breaks, I'll use a socket head bolt, stronger. But then the pressure is transferred to the bolt threads, and there isn't too much material around those.
@@senatorjosephmccarthy2720 Well, I decided not to try to tear into it and instead I JB welded the old bolt handle directly to the back of the bolt so it runs inline with the bolt. Believe it or not, it almost looks like it was built that way from the start, and so far it works great. I just need to remember to always twist the bolt to ensure it is locked in the carrier (or what ever it might be called) Happy 4th!
Yes there is. I think it is actually a Delrin washer if I remember correctly. You can replace it with an oring and it should work fine. It won't last as long as the washer but orings are cheap so just swap it out once in awhile. It is in the end of the valve. There is a small brass collar that threads into the valve that keeps the washer in place. It usually turns out pretty easily.
@@bigjsoutdoorsairguns9007 thanks to you i was able to follow your video and take the gun apart and i found the messed up o ring its like a clear o ring im not sure if you would call it an o ring but yea i found the issue and i found a replacement part
There should be a small package in the case that has some back orings. I do have a list somewhere that a fellow youtuber put together with all of the sizes. Shoot me an email at bigjscustomairguns@gmail.com and I will email it to you.
I think I need to replace the piercing nipple is getting dull possibly when it actually does Pierce that's the end of the travel I can't screw it in anymore it comes to a sudden stop it didn't used to do that
Hey there, sorry for the late response I just saw this. It may need to be replaced but you could try dropping a dime on top of the capsule. It will take up a little space and help with piercing. You might be able to get that part from Bagnall & Kirkwood. They are out of England and they carry a few parts for the CP2 & Chaser which are the same gun. I apologize again for the late response.
@@bigjsoutdoorsairguns9007 let me reword that after I pierce the bottle I keep turning until it's sealed no longer hissing then it comes to a sudden stop.... I remember that it would stop hissing but you could turn it with your fingers a little bit more however the gun works just fine
@gliderman Oh ok. Yeah I suppose that gasket might just be squished a little. I know some guys just use orings to replace them. I don't think they last along as the factory gasket.
I think I showed in this video how I cock them but I can't remember for sure. I wrap my index finger around the bolt handle as close to the breech as I can & then place my thumb on the back of the gun and cock it that way. I have been shooting them for years now and have never broken a handle. I do think there are some replacement bolts that look a little nicer if a guy wanted to go that way.
thanks master for the video, very well explained all, I will be using this to dismantle my cp2 and tune it a bit but in reality it does not to need be tuned, , fantastic and lighweight + precise gun btw, the best co2 gun/rifle in the planet, get the 18 inch barrel for yours btw you will not regret it
You need to know that all your time and trouble making these videos is worth it for me, and I am sure many others. Watched this one several times and learned a lot. At my age that says a lot. Question; The Bandit bolt is different than the chaser bolt. And I could not get the Bandit bolt to close when I exchanged my long Chaser barrel. Looks like the end of the Chaser bolt has a reduced dia. Near the forward end and the Bandit bolt does not. Any experience with this?
Hi Bob, thanks for the compliment. I appreciate it. Unfortunately I do not have a Bandit. A question though, is the barrel the same caliber as the Bandit? I have noticed that the 177 and 22 Chaser bolts have a different diameter on the probe. The 22 being larger. Maybe that is causing you an issue? 🤔
@@bigjsoutdoorsairguns9007 I might buy a new bolt from PA. The pictures on line show a reduced dia.. I was watching your video just so I could see what I had to do to change it out. You did good. Now I know! Enjoy your holidays. Bob
Hey there, on the top of the breech towards rear under the rear sight is a very small set screw. Under that set screw is a tiny rubber ball that keeps the bolt from jumping to much. That little ball can wear and may have gotten stuck between the bolt and the breech. You will have to disassemble the the gun to get to it. That's the only thing I can think of right now.
@@bigjsoutdoorsairguns9007 That may be exactly what was involved! I found that my son had adjusted the rear sight too much and it actually impeded the bolt from moving. I was wondering why adjusting the sight would affect the movement of the bolt. I can't THANK YOU enough for responding! I found that there are so few that have any knowledge concerning air guns.
Great video!
I will link it next time i get a assembly question about the chaser 😁
I'll tell you what you do a great job of explaining everything in detail and it's not overwhelming you might even give me the confidence to try this
You can do it man! These Chasers aren't to complicated.
@@bigjsoutdoorsairguns9007 I think with your video it's a definite possibility
Aussie Dave in PA here brother,... I have done much testing on o'rings and have a list of the sizes if anyone is interested.
Thats a great idea with the moly grease. I am very interested in that list! Lol Would love to see it.
@@bigjsoutdoorsairguns9007
Okay, here's the list of o'rings that I have used several times in my .177 & in my .22 Chasers,... I have looked into different materials but I think the basic black Buna or Nitrile o'rings are probably best.
I will list the "cross section" (CS) first which is the thickness of the o'ring & then OD x ID.
First will be the all important CO2 seal which is a custom seal but I have tried many sizes with varying success,... Even tried a flat round rubber washer but it didn't last long. I tried up to 3mm cross section to get a bigger seal area on the CO2 powerlet but then the probe to puncture the powerlet doesn't reach to pierce a hole,... 2mm to 2.5mm works but I have so far used 78 powerlets on one 2mm o'ring & it still works fine & you don't need to crank down very hard on the end cap :)
CO2 seal (under the threaded ring): 2mm CS - 9mm x 5mm (or 2.5mm CS - 9mm x 4mm but it is harder to puncture the powerlet)
.177 bolt seal (in end of barrel): 1.5mm CS - 8mm x 5mm
.22 bolt seal (in end of barrel): 1.5mm CS - 9mm x 6mm
Barrel Port seals (2) 1mm CS - 9mm x 7mm (tight fit)
Brass Port seals (2) 2mm CS - 10mm x 6mm
Inner cylinder seal (behind the CO2 inlet/puncture probe) 2mm CS - 8mm x 4mm
Cylinder seal (behind the threads to seal the 2 halves of the cylinder): 2mm CS - 14mm x 10mm This works fine but it is small & is stretched thin to fit so after taking measurements I would like to try 1.5mm CS - 16mm x 13mm because it needs to be thin.
Let me know what you think, Cheers.
@@davidyummus6259 Thank you thank you thank you sir! I am sure it was a pain typing all of that out. I greatly appreciate that. I took screen shots so I can save them.
@@bigjsoutdoorsairguns9007
No probs ;)
Fantastic video! I am brand new to these but whatever I am getting into I need to find the real deep dive how to videos about the topic, by the experts. I'm going to be a big Diana enthusiast, I know it. Right off the bat when I realized what these were and saw the price, design and build quality, I ordered 2 Chaser Pistol/Rifle kits. This is pretty much the most/best pellet gun for the money, from what I am seeing. It will fit right in with my 2240 and P1322 and similar Crosmans and my handful of other very simple, but high performance and well engineered air guns and less lethal launchers. I will contribute back knowledge and videos for sure. (I also like Gamo Spring Magnums, Hatsan 125 Springs .25s, First Strike FSCs and Pepperball VKS in .68 cal (riot balls.) Now I am also a Diana guy. Thanks man for giving me my first in-depth lesson!
I may need to try one of them Chaser 😁
Great job on the video brother! 😊
Thanks man!
I like to put Moly grease on the contact areas of the Hammer :)
Great job on that video.. the chaser is one of my favourite co2 guns 👍👍
Great shootin little guns. Thought this video might be useful to some people
Thanks for the valuable Chaser complete teardown and assembly info.
There's probably 10k Seneca Aspens out there needing a video on fixing the integrated 3 stage pump, and modifying it to last reasonably. Somebody said the inner tube doesn't get lubed, so the Orings can't slide.
Sometimes I take a new air gun or less lethal launcher apart and clean and lube and debur and do other things to it, before even firing it once. In most cases the lubrication is not nearly as good as one can do with a careful prep. Certainly some things get put together on the assembly line with insufficient lube and other things, especially those that are internal and hard to validate via QA. Not saying Diana is not top quality .. just saying in general. Often we can use different types of lube in different places, often more than the factory, but I know of one example where you want less than what the factory does. So it is a great idea to do the research and not use an air gun etc too much before doing a teardown and full break in RE-lubrication. And other little mods, deburring, maybe a little polishing or focused break-in of mating surfaces can be done. The best part is you get to know the gun and start to become one with it, in a sense. Develop that muscle memory etc.
Great video, I’ve got a Air Bug on the way , can’t wait to start tinkering with it,, Thank you Sir, 😎🍻
No problem 😊 Good luck with h the Air Bug. I can't help but take things apart. 😆 Thanks for watching the video. I do appreciate it!
This would be a okay gun if it didn't have the peep hole and trigger housing welded on this makes it almost impossible to make it hpa you can get parts but you have to no what other air guns use the same parts hint for similar parts. A compeny with a x in the name. dawn china. Hint A air gun company shaped like this🔼 air can you can get most of the parts. If you really need them. Unfortunately if you want a hpa chaser carbine with power a dana storm rider taken out of stock with the chaser grip would be the easiest way to make a real hpa carbine powerful. 💯👍👌✌️
Yeah I wish that trigger frame/housing wasn't welded on. I have exchanged emails with Snow Peak and they told me to get a hold of Pyramyd Air for parts. Which as you probably know they do not offer much. So I am relying on Bagnall & Kirkwood for parts. I did convert a 22 rifle kit to HPA and it is a little ripper! Lol Really accurate and fun to shoot. I would still like to get my hands on a Stormrider. I will at some point. Hey I also saw that you commented on my Armada video and the P17 video. When I click on them TH-cam won't let me see them. This has been happening a lot lately. I just happened to catch yours but I wonder how many I am not seeing at all. Anyway, thanks for watching the videos man, I do appreciate it
Have you ever did a tear down on the Diana Bandit PCP ? My check valve is stuck, won't air up. I know I'm gonna have to tear it apart to fix.
I have not but I think they are pretty similar to the Chaser. I hope you get it figured out.
Are there any options to replace the grip to more of a 10m competition style, or any other grip for that matter.
I know Buck-rail.com has conversion kits that are eh r compatible, so you could get one of those and then find a grip of your liking.
Thanks a lot for disasemble video. That make me brave to disasemble my Diana and have allready progress with :D
I install recoilspring from UZI in the valv (same as original .97mm wings). Cutt down from long uzi spring ca. doble the langth as original Diana valf spring (X2 Diana valv langth). Now i can shot 70 shots with same power.
Shot anyways at home, so from power nice for home shooting :D
Second step, i try make Diana quitter. Silencer install, but anyway noizy. May be shroud the barel and surpresor with duktape...
Glad that you found it helpful. That's why I make video's like that. Keep working on those modifications. These guns are a great platform for modifications. Thanks for watching the video. I do appreciate it!
Vladi 25%, I watched videos on building moderators, then made one with the cones for an Aspen. Works fairly well. I have no lathe, only the usual electric hand held tools.
Thanks and nice job . I just snapped the bolt handle off my Bandit and need to fab a fix. I'm assuming the process of getting the bolt out is about the same. Appreciate your efforts.
How is it going with the bolt replacement? If mine breaks, I'll use a socket head bolt, stronger. But then the pressure is transferred to the bolt threads, and there isn't too much material around those.
@@senatorjosephmccarthy2720 Well, I decided not to try to tear into it and instead I JB welded the old bolt handle directly to the back of the bolt so it runs inline with the bolt. Believe it or not, it almost looks like it was built that way from the start, and so far it works great. I just need to remember to always twist the bolt to ensure it is locked in the carrier (or what ever it might be called) Happy 4th!
hey so my diana chaser keeps leaking and i dont know why it punctures but just leaks is there an o ring maybe where the co2 goes?
Yes there is. I think it is actually a Delrin washer if I remember correctly. You can replace it with an oring and it should work fine. It won't last as long as the washer but orings are cheap so just swap it out once in awhile. It is in the end of the valve. There is a small brass collar that threads into the valve that keeps the washer in place. It usually turns out pretty easily.
@@bigjsoutdoorsairguns9007 thanks to you i was able to follow your video and take the gun apart and i found the messed up o ring its like a clear o ring im not sure if you would call it an o ring but yea i found the issue and i found a replacement part
Where do you get your extra barrel o-rings ?
There should be a small package in the case that has some back orings. I do have a list somewhere that a fellow youtuber put together with all of the sizes. Shoot me an email at bigjscustomairguns@gmail.com
and I will email it to you.
Another great demonstration video, cheers mate.
Thanks! I appreciate it.
I think I need to replace the piercing nipple is getting dull possibly when it actually does Pierce that's the end of the travel I can't screw it in anymore it comes to a sudden stop it didn't used to do that
Hey there, sorry for the late response
I just saw this. It may need to be replaced but you could try dropping a dime on top of the capsule. It will take up a little space and help with piercing. You might be able to get that part from Bagnall & Kirkwood. They are out of England and they carry a few parts for the CP2 & Chaser which are the same gun. I apologize again for the late response.
@@bigjsoutdoorsairguns9007 let me reword that after I pierce the bottle I keep turning until it's sealed no longer hissing then it comes to a sudden stop.... I remember that it would stop hissing but you could turn it with your fingers a little bit more however the gun works just fine
@gliderman Oh ok. Yeah I suppose that gasket might just be squished a little. I know some guys just use orings to replace them. I don't think they last along as the factory gasket.
3:00 do you know what the measurement is on the little breech screw?i hope its a common size unlike crosmans.
I can do allot but this i won't even try to do, I think I would finish with 2 guns instead of one 😅
😄😄😄
Great video, thanks
Thank big J great video on diana chaser oldgeorge northern California
Thank you!
In your opinion, do you feel that the bolt lever should be changed asap before it could break?
I think I showed in this video how I cock them but I can't remember for sure. I wrap my index finger around the bolt handle as close to the breech as I can & then place my thumb on the back of the gun and cock it that way. I have been shooting them for years now and have never broken a handle. I do think there are some replacement bolts that look a little nicer if a guy wanted to go that way.
thanks master for the video, very well explained all, I will be using this to dismantle my cp2 and tune it a bit but in reality it does not to need be tuned, , fantastic and lighweight + precise gun btw, the best co2 gun/rifle in the planet, get the 18 inch barrel for yours btw you will not regret it
They really are great guns. I like them so much I have 4 of them! Lol
You need to know that all your time and trouble making these videos is worth it for me, and I am sure many others.
Watched this one several times and learned a lot. At my age that says a lot.
Question; The Bandit bolt is different than the chaser bolt. And I could not get the Bandit bolt to close when I exchanged my long Chaser barrel.
Looks like the end of the Chaser bolt has a reduced dia. Near the forward end and the Bandit bolt does not. Any experience with this?
Hi Bob, thanks for the compliment. I appreciate it. Unfortunately I do not have a Bandit. A question though, is the barrel the same caliber as the Bandit? I have noticed that the 177 and 22 Chaser bolts have a different diameter on the probe. The 22 being larger. Maybe that is causing you an issue? 🤔
@@bigjsoutdoorsairguns9007 I might buy a new bolt from PA. The pictures on line show a reduced dia.. I was watching your video just so I could see what I had to do to change it out. You did good. Now I know!
Enjoy your holidays.
Bob
the bolt on my Diana bandit is stuck closed and I cannot cock it. What can I do? Please!
Hey there, on the top of the breech towards rear under the rear sight is a very small set screw. Under that set screw is a tiny rubber ball that keeps the bolt from jumping to much. That little ball can wear and may have gotten stuck between the bolt and the breech. You will have to disassemble the the gun to get to it. That's the only thing I can think of right now.
@@bigjsoutdoorsairguns9007 That may be exactly what was involved! I found that my son had adjusted the rear sight too much and it actually impeded the bolt from moving. I was wondering why adjusting the sight would affect the movement of the bolt. I can't THANK YOU enough for responding! I found that there are so few that have any knowledge concerning air guns.
@M C That's great 👍 I am glad I could be of help to you. Happy Shootin my friend!