This video review gives an up close look at the new Diana Chaser Co2 pellet pistol. At 50 shots per fill, this is an efficient and powerful plinker shooting a .22 pellet at 460 FPS. No adjustment of the sites were necessary to hit spinner size targets at 7 yards away with ease. Really a fun gun. I can't wait to shoot the Diana Chaser Rifle Kit! (next week).
well i have not taken the plug out but i would assume that once the screw is removed you would just cock the pistol and the spring pressure would push it out
if not the breech would have to come off so you could push the hammer spring and plug out
i have done much work to the trigger assemble and built a 13 inch barreled pistol but never worries about the hammer spring
That still didn't move it so I took a pin punch on an angel and tapped it out. Smoothed it out a little before I put it back in.
I didn't have a spring the right circumference to fit as a replacement, so I stretched out the original spring. That raised the trigger pull to about 3 lbs from 2 lbs, but still in my comfort zone.
The last time I shot it, it dented but bounced off the 1/2 plywood. This time it buried the pellet up the rear portion so it seems to have a little more power.
Just because something works okay, doesn't mean you can't try to make it better.
Maybe I do not understand the Diana Chaser internal design, but I don't see how adjusting trigger tension affects the CO2 valve's output. If I'm not mistaken, the 2240 has separate springs for trigger and CO2 valve. Are you saying that the trigger spring and the CO2 valve spring are one and the same on the Chaser?
Also, there are zillions of springs made for all manner of tasks. Someone, somewhere, makes the spring you need without tweaking the stock parts. It may pay to talk to a machinist who would know all that stuff. There are a ton of guys on eBay who offer Crosman upgrade springs - talk to them and see what they may have to offer. And if enough people ask about Chaser upgrades, that may be the motivation for them make some items. ?
I think he stretched the hammer spring, and his reference to the trigger going from 2lbs to 3lbs is related to the added force of the hammer spring acting against the sear.
But to be honest I was surprised that adding hammer spring tension actually increased the power. Most OEM designs are oversprung and waste CO2, and that was true of all 3 SPA models I own (CP2, CP1, and CR600W). Adding more HST usually just makes one less efficient, and it aggravates the self-cooling nature of CO2 which contributes to each successive shot being slower than the last unless you pause to give things time to approach thermal equilibrium.
Louder isn't necessarily faster. Sometimes it's just louder plus nothing.
i have only worked on the trigger but if you take the pistol out of the grip frame and watch how it works you see that the sear holds the hammer back much as the 2240 does
but where the 2240 has no adjustments other then change the sear or the whole grip frame or by grinding a small amount off the top of the sear engagement point, the Chaser does
if you take the Chase trigger out of the frame and just push on the sear you will see the sear cams the hammer back
now the trigger adjustment with the trigger doesn't allow that but it is a interesting point
you don't want to have to push the hammer back to clear the sear, hammer interface
so how to make more FPS, a longer barrel will help, a larger transfer port would help, a larger valve could help and of course a stronger hammer spring but with all of that said much R&D work would be needed
so the pistol can be improved or tailored to the owners liking
and i do believe it could be become a sort of 2240 pistol but it never will
and that reason is the sellers of the pistol setup, like PA don't or won't stock factory parts so we as shooter tinkers can modify said parts for testing
now i made a 13 inch pistol with many ideas i had i it turned out fine
there are my trigger mods i made but you have to take the grip frame off and watch how it works
@droidiphile I don't like the idea to stretch the original spring or any George of the jungle style actions . I found a workshop specialized in making of custom springs of any kind and size and ordered them a few sizes and types ( on attached photo ) .The specs of the original springs are as follows : Chaser pistol : L = 70 mm / External diameter is 10 mm ( - 0,1 ) ; wire diameter : 1 mm ; and the step is 3.2 . Chaser rifle the spring L = 75 mm ; the other parameters are equal . So, i have now springs 80,85 and 90 mm long and step 3,2 and 3,7 . Just waiting for my new Chrony to arrive and will start the tests .Why I think the stretching is not a good idea : if something goes wrong with the alternative lenghts and push resistances I simply will return the original spring back to work . It is a two minutes job .
@droidiphile I don't like the idea to stretch the original spring or any George of the jungle style actions . I found a workshop specialized in making of custom springs of any kind and size and ordered them a few sizes and types ( on attached photo ) .The specs of the original springs are as follows : Chaser pistol : L = 70 mm / External diameter is 10 mm ( - 0,1 ) ; wire diameter : 1 mm ; and the step is 3.2 . Chaser rifle the spring L = 75 mm ; the other parameters are equal . So, i have now springs 80,85 and 90 mm long and step 3,2 and 3,7 . Just waiting for my new Chrony to arrive and will start the tests .Why I think the stretching is not a good idea : if something goes wrong with the alternative lenghts and push resistances I simply will return the original spring back to work . It is a two minutes job .
Most cool! I'd love to read your data and results !!!
Here are the test results with the new installed 80 mm Custom spring . The difference between stock performance with the 70 mm spring and that one is quite amazing . Used CO2 cartridge was ASG , and the indoor temperature was +24 Celsius ( Important for the CO2 gas behavior ) .
Posting pics with the test results and the new look of the tested Diana . Put on her a stock, scope, laser sight , and a 200 mm rifle silencer , as with the new spring she is loud like a little cannon 😉
