Thanks so much for your videos regarding Diana Chaser modifications. While I did not elongate the spring as suggested, I did purchase a stronger spring specifically recommended on an airgun website. Your videos clearly explaining how to dismantle the Chaser were of TREMENDOUS help, and your very friendly and knowledgeable demeanor made the videos even more enjoyable.
The spring is actually not really stronger just longer. The standard spring is 70mm some people put in a "stronger" spring which is actually identical just 90mm in length. Just remember this will affect your trigger pull. Another option which will give similar results is to insert a spacer inside the hammer which pre-tensions the spring and will also give more fps😉
Putting in a weaker valve spring I highly doubt will give you an increased fps. What you could do is change the position of the spring in the trigger and this will lighten the trigger as you gain leverage on the sear
Hi Tyrone I've just had a look at the FX ranchero pistol arrow gun and it seems almost identical design to the cp2 do you think if you screwed a piece of copper or steel pipe to the end of the barrel you would have an arrow shooter ?I'm no engineer if it doesn't look hard
I believe the arrow air guns look simpler than they really are, it will need to be a new barrel/tu e which can be installed i stead of the current barrel. The trick comes in with the arrows they need to be able to withstand 90Bar of pressure and have enough of an interference fit that they don't simly fall off.
@@African-Budget-Pellet-Gunner I don't have a micrometre put the tape measure suggests the barrel is at 13 mm at the widest point 15mm aluminium tube may be a good starting point but how to block it off and fit a Broadhead is a challenge like you say! Come on Tyrone if anyone can😉👍👍... then you can "show us it's features!"
Did you also put a spacer in the hammer? Sometimes the balance is just a little off. Try add a spacer or little longer hammer spring and see what happens. Also check that your temperature while testing is similar
Tyrone, I did all the mods on your 3 part series and stretched the hammer spring to 90mm, and the gun went from 450fps to 550fps. Disappointing. The only Mod I did not do was the spacer to pre-compress the spring. I wonder, is that what is missing here to get it up to 800fps?
@Sassy Silver is this in .22 or .177? Long barrel or short barrel? If it is .22 I think you may get to about 575fps with the spacer which will be very close to 12fpe. Due to the co2 pressure you won't achieve the same as with your stormrider/PR900
Hello Sir , before 2 days by mistake i shoted my leg with .177 (7grain) by 300 fps pistol , a little blood came out, only some drops , and i felt at the first 3 seconds a hit , but not painful ! I try to search for the pellet i did not found it ! Its(lead/flat nose) , how can i know if its inside my leg or not? 48 hour passed with no infections,and no colors changed in my skin ! And i dont want to visit the doctor ,
Eish that is not good, I would definitely recommend seeing a doctor as soon as possible. If the lead is inside it can really cause you some problems, is there a hole?
hy, follwed your instructions except for transfer port bought a 4mil new one and the result was 9lbsft virtually no improvement dont understand why still trying to figure out
Как увеличить длину подавателя, чтобы пуля в стволе не нависала над отверстием перепуска и её юбка не гнулась при выстреле? Без токарных работ и полной замены подавателя. У вас, есть идеи? Нужно всего то, 1-1,5 мм...
I love my CP2 and the Chaser is basically identical, the quality of the 2 is identical as they are made in the same factory and then re-branded. I do however think the CP2 quality is better than say a crosman 2240/2250. You honestly couldn't go wrong with these rifles
@@African-Budget-Pellet-Gunner камера, где проходит шток клапана, я про этот диаметр. На рисунке этого не указано. Кстати, если уменьшить диаметр штока, до 1,7-2 мм, в этом месте (выпускной камере), что-то изменится?
@@wvv594 i believe it is 3mm, making the valve stem smaller won't have an effect on power. it is just to open the valve, if you make it longer it will make a difference
@@African-Budget-Pellet-Gunner 3 мм- мало. Тогда смысл рассверливать до 3,5 :)? Да и стоковое отверстие в перепуске уже 3,25... Думаю, там диаметр больше. Где-то 4-4,5. Про шток, согласен...
I like what you are doing here. Me, I'm kinda doing the same but in a different direction to improve grouping accuracy and efficiency with the CP2 as a 10m target pistol, but I don't vlog (tried, lot of effort). Garden isn't long enough, I can't crawl on the ground, I don't hunt animals we'll not eat, except rats but the dog deals with those if they appear. Apologies for long post on your video but hope it contributes something. Received wisdom from Terry Robb is max 3.5mm transfer port for 177, with 4.0 for 22 only. He does sell TP in various sizes. He also make stainless valves, and valve bodies (the chamber). Ensure that valve body is gas tight, it has to retain 850psi. Probably worth looking at his products for ideas www.trrobb.com/index.aspx?pageid=1449439&chainID=156704&txtQuickSearch=cp1 I always take the trigger out because those pins delight in falling out and hiding, or use a bulldog clip to retain them. Saves 10 minutes crawling around on the floor with a magnet. The valve body can come out through the CO2 end without removing the hammer but the TP has to be removed by taking the breech off, providing it wants to move down the tube. When reassembling, align the valve body with the TP before doing the little screw up. I measured the barrel and valve body ports as fitting a 9/64-in drill shank, the shank being a trifle undersize of the drill, 3.5mm dia. This is the .177, I suspect the .22 is 4.0mm If a drill runs off centre by 0.5mm it will drill a hole 1mm wider than it should be, few drills are precise enough and small ones flex, use a reamer. My old dad the master toolmaker could sharpen a drill to run dead-centre or off-centre by eye, I've never met anyone else who could do that on a bench grinder. Measure twice, cut once. The valve body is metal and drilling the port risks burrs on the inside of the valve seat which will be difficult to remove. We cannot remove meat from the inside of the valve seat, it is a precision seal. The only way to de-burr would be to reach through the port with a small smooth round hook probe and rub them. Very sharp drill with cutting fluid to avoid burrs in the first place. Never use a brand new drill on the job, test it on scrap to hone it and take wire edges which may cause tearing off. Ideal tool might be the Dremel on its pillar drill stand. The ID of 15mm means I should be able to use a length standard copper plumbing pipe to sleeve the valve body to reduce its volume (a la 2300S), but with the 1.5mm longer trrobb valve to express more of the gas though a larger TP (experiment 2.5, 3.0, 3.5) to increase its flow rate. Less gas but released more quickly so that is is used within the barrel rather than most of it being released after the pellet has long gone; more efficient. Logically this should work as it does follow gas laws and venturi airflow stuff.
Thanks so much for your videos regarding Diana Chaser modifications. While I did not elongate the spring as suggested, I did purchase a stronger spring specifically recommended on an airgun website. Your videos clearly explaining how to dismantle the Chaser were of TREMENDOUS help, and your very friendly and knowledgeable demeanor made the videos even more enjoyable.
@Daniel Walthers you are very welcome and I am really grateful that the videos were helpful. Feedback like this makes all the effort worthwhile
Could you please tell me more about this stronger spring
The spring is actually not really stronger just longer. The standard spring is 70mm some people put in a "stronger" spring which is actually identical just 90mm in length. Just remember this will affect your trigger pull. Another option which will give similar results is to insert a spacer inside the hammer which pre-tensions the spring and will also give more fps😉
@@African-Budget-Pellet-Gunner hi Tyrone I don't like a stronger trigger is it possible to weaken the valve spring instead?
Putting in a weaker valve spring I highly doubt will give you an increased fps. What you could do is change the position of the spring in the trigger and this will lighten the trigger as you gain leverage on the sear
Dear Tyrone , I am so glad that you proceed moding the cp2 and share with us your precious experience ！Many thanks ！👍👍🎊🎊🙏🙏
You're welcome K Lee, happy shooting my friend
Great video Tyrone, looking forward to the next one. Thank you 👍🇬🇧
Thanks Steve going to try get the next 2 out in the next day or 2 so that those who want to mod can do so. Thanks for your feedback
so close to a 2240 great video and fun edits.
@stonie Thanks for your kind words, yes it is very similar to the 2240. I do think it is a little better quality though
still waiting on my back ordered chaser lol. ig it is fitting this video was released.
I feel your pain, hope it arrives soon
Hi Tyrone I've just had a look at the FX ranchero pistol arrow gun and it seems almost identical design to the cp2 do you think if you screwed a piece of copper or steel pipe to the end of the barrel you would have an arrow shooter ?I'm no engineer if it doesn't look hard
I believe the arrow air guns look simpler than they really are, it will need to be a new barrel/tu e which can be installed i stead of the current barrel. The trick comes in with the arrows they need to be able to withstand 90Bar of pressure and have enough of an interference fit that they don't simly fall off.
@@African-Budget-Pellet-Gunner I don't have a micrometre put the tape measure suggests the barrel is at 13 mm at the widest point 15mm aluminium tube may be a good starting point but how to block it off and fit a Broadhead is a challenge like you say! Come on Tyrone if anyone can😉👍👍... then you can "show us it's features!"
I did all of that, I even cut half of the thread but it didn't improve anything at all.
.22 Long barell, 162m/s before and after.
Did you also put a spacer in the hammer? Sometimes the balance is just a little off. Try add a spacer or little longer hammer spring and see what happens. Also check that your temperature while testing is similar
Tyrone, I did all the mods on your 3 part series and stretched the hammer spring to 90mm, and the gun went from 450fps to 550fps. Disappointing. The only Mod I did not do was the spacer to pre-compress the spring. I wonder, is that what is missing here to get it up to 800fps?
@Sassy Silver is this in .22 or .177? Long barrel or short barrel? If it is .22 I think you may get to about 575fps with the spacer which will be very close to 12fpe. Due to the co2 pressure you won't achieve the same as with your stormrider/PR900
@@African-Budget-Pellet-Gunner .22 short barrel. I put in a spacer and I got close to 500fps with lead and about 560 with an aluminum pellet.
@Sassy Silver ok great now if you install the long barrel it should give you a considerable boost as well
Will this mod work on the CP2 pcp version I ask as I have just bought a factory made CP2 pcp version, thanks in advance
Yes, all the principles are the same
Hello Sir , before 2 days by mistake i shoted my leg with .177 (7grain) by 300 fps pistol , a little blood came out, only some drops , and i felt at the first 3 seconds a hit , but not painful ! I try to search for the pellet i did not found it ! Its(lead/flat nose) , how can i know if its inside my leg or not? 48 hour passed with no infections,and no colors changed in my skin ! And i dont want to visit the doctor ,
Eish that is not good, I would definitely recommend seeing a doctor as soon as possible. If the lead is inside it can really cause you some problems, is there a hole?
hy, follwed your instructions except for transfer port bought a 4mil new one and the result was 9lbsft virtually no improvement dont understand why still trying to figure out
Hi @barry mcintosh awesome sounds like you have been busy. Is your rifle 177 or 22? Which mods have you done now? Only the transfer port?
Do you suggest any lubrication in the gun barrel Tyrone? Or just keep it clean
Nah just keep it clean but also not too clean it needs to be leaded in a little. I would typically clean it every 700-800 shots
@@African-Budget-Pellet-Gunner you've answered another question I had bouncing around my head so thanks very much Tyrone!
Как увеличить длину подавателя, чтобы пуля в стволе не нависала над отверстием перепуска и её юбка не гнулась при выстреле? Без токарных работ и полной замены подавателя. У вас, есть идеи? Нужно всего то, 1-1,5 мм...
Посмотрите как дорабатывают 1377 возможно в этом что то есть
Ce n est pas le cas,.
Where is different between diana and artemis ?
Only difference as far as I know between the chaser and CP2 is the bolt action handle. The PR900 and stormrider have a few more differences
@@African-Budget-Pellet-Gunner quality of total product ?
I love my CP2 and the Chaser is basically identical, the quality of the 2 is identical as they are made in the same factory and then re-branded. I do however think the CP2 quality is better than say a crosman 2240/2250. You honestly couldn't go wrong with these rifles
@@African-Budget-Pellet-Gunner this is exactly the information I was looking for, thank you man 👍
You're welcome, enjoy and happy shooting
Tyrone this carbine modify is caliber .22 or .177 ? tanks
@Rodrigo Correa my CP2 is. 177 but the mods can be applied to both calibers
Какой диаметр выпускной камеры клапана, та что внутри?
check at around 08:31 all the sizes are there
@@African-Budget-Pellet-Gunner камера, где проходит шток клапана, я про этот диаметр. На рисунке этого не указано.
Кстати, если уменьшить диаметр штока, до 1,7-2 мм, в этом месте (выпускной камере), что-то изменится?
@@wvv594 i believe it is 3mm, making the valve stem smaller won't have an effect on power. it is just to open the valve, if you make it longer it will make a difference
@@African-Budget-Pellet-Gunner 3 мм- мало. Тогда смысл рассверливать до 3,5 :)? Да и стоковое отверстие в перепуске уже 3,25... Думаю, там диаметр больше. Где-то 4-4,5. Про шток, согласен...
Is this the same with pcp?
Yes, this will have the same effect on a pcp
I like what you are doing here. Me, I'm kinda doing the same but in a different direction to improve grouping accuracy and efficiency with the CP2 as a 10m target pistol, but I don't vlog (tried, lot of effort). Garden isn't long enough, I can't crawl on the ground, I don't hunt animals we'll not eat, except rats but the dog deals with those if they appear. Apologies for long post on your video but hope it contributes something.
Received wisdom from Terry Robb is max 3.5mm transfer port for 177, with 4.0 for 22 only. He does sell TP in various sizes. He also make stainless valves, and valve bodies (the chamber). Ensure that valve body is gas tight, it has to retain 850psi. Probably worth looking at his products for ideas www.trrobb.com/index.aspx?pageid=1449439&chainID=156704&txtQuickSearch=cp1
I always take the trigger out because those pins delight in falling out and hiding, or use a bulldog clip to retain them. Saves 10 minutes crawling around on the floor with a magnet. The valve body can come out through the CO2 end without removing the hammer but the TP has to be removed by taking the breech off, providing it wants to move down the tube. When reassembling, align the valve body with the TP before doing the little screw up. I measured the barrel and valve body ports as fitting a 9/64-in drill shank, the shank being a trifle undersize of the drill, 3.5mm dia. This is the .177, I suspect the .22 is 4.0mm
If a drill runs off centre by 0.5mm it will drill a hole 1mm wider than it should be, few drills are precise enough and small ones flex, use a reamer. My old dad the master toolmaker could sharpen a drill to run dead-centre or off-centre by eye, I've never met anyone else who could do that on a bench grinder. Measure twice, cut once.
The valve body is metal and drilling the port risks burrs on the inside of the valve seat which will be difficult to remove. We cannot remove meat from the inside of the valve seat, it is a precision seal. The only way to de-burr would be to reach through the port with a small smooth round hook probe and rub them. Very sharp drill with cutting fluid to avoid burrs in the first place. Never use a brand new drill on the job, test it on scrap to hone it and take wire edges which may cause tearing off. Ideal tool might be the Dremel on its pillar drill stand.
The ID of 15mm means I should be able to use a length standard copper plumbing pipe to sleeve the valve body to reduce its volume (a la 2300S), but with the 1.5mm longer trrobb valve to express more of the gas though a larger TP (experiment 2.5, 3.0, 3.5) to increase its flow rate. Less gas but released more quickly so that is is used within the barrel rather than most of it being released after the pellet has long gone; more efficient. Logically this should work as it does follow gas laws and venturi airflow stuff.
Thanks for your post Jeff, I hope your project is a success