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PostPosted: Sun Mar 19, 2023 10:03 am 
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Joined: Fri Jan 22, 2010 1:17 pm
Posts: 4167
Location: Kingston, ON
Here is my latest build,
It's a regulated PCP 2240 carbine in .22 with 10 shot repeater breach.
The tube is rated 3000 psi, and the regulator is adjustable internally (need to take apart the tube to access the adjustment nut) from 600-2000 psi. It las a high pressure and a low pressure gauge. Currently set the reg at 1000 psi, with the 14.6" barrel and a weak hammer spring its doing 480 fps with std cphp pellets, and giving 15 good shots per fill. Cocking and loading takes some getting used to but works fine, pull back the plunger to cock the hammer, cycle the bolt to load pellet, then fire and repeat.
I'm now out of new projects, thankfully. Its time to review all what I have in the closet, and tweak one or two that need tweaking.


Attachments:
2240 new 3.jpg
2240 new 3.jpg [ 85.98 KiB | Viewed 1698 times ]
2240 new 2.jpg
2240 new 2.jpg [ 82.22 KiB | Viewed 1698 times ]
2240 new 1.jpg
2240 new 1.jpg [ 43.96 KiB | Viewed 1698 times ]

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PostPosted: Sun Mar 19, 2023 1:48 pm 
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Location: GTA, ON
I am wondering what's the purpose of putting a flashlight on where you should put a scope?!. [emoji38]

Great (another) done project~

As you are using a 10 shot mag, will you think about adding sth to make the shot count to about 10 shots or double to about 20 shots? Looks that would be 'better tuned'?!. :)

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PostPosted: Sun Mar 19, 2023 2:02 pm 
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Location: Kingston, ON
YepYep wrote:
I am wondering what's the purpose of putting a flashlight on where you should put a scope?!. [emoji38]

Kinda looks like a flashlight, but it a Leapers bug buster scope, focus down to 3 yds even.
I can put a flashlight, but I think I'll give it a miss on this one.
I'm nost sure what to do about shot count, I can play with TP opening, reg pressure and hammer spring., of course but the tube holds very small volume of air and plenum is small, so 15 shots it will be for a while.

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PostPosted: Sun Mar 19, 2023 4:09 pm 
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Yeah, you mentioned that to me before about the small volume of the tube...

The best way is still a bigger tube... Then I think maybe you can lower the power a little bit? So using lighter pellets to get a 20 shots?!

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~Plinkers~
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~Target~
HW 30s/35e/97k/40+Extender/P3+Scope/70#CZ200s Laminated@10fpe#AA ProSport-177@12fpe


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PostPosted: Sun Mar 19, 2023 6:15 pm 
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Location: Guelph, Ontario
Smart looking unit for sure! [emoji106][emoji106][emoji106]

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PostPosted: Thu Mar 23, 2023 11:29 am 
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Joined: Sat Jan 12, 2019 10:57 am
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Location: Ontario north of GTA
Nice, looks sharp. How do I get a the rear stock like that. did you buy it ? Did you print it or have someone print it.It looks so good! :D


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PostPosted: Thu Mar 23, 2023 12:10 pm 
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Location: Kingston, ON
Thanks for all your kind words, it is actually a nice little plinker. i will work on tuning it for better shot count when I get a chance. I got the basic stock off one of the "free to use" 3D cad sites, I forget which one now, but probably Thingiverse since they seem to have a lot more freeware 22xx parts than the other sites. I then modified the cad files to allow for the utilization of tubes for the main rear stock rather than 3D printing long tubular sections. Printing tubes vertically gives nice round x-section but potential weak lines between layers - printing flat gives a poor surface finish, at least in my novice printing experience and capabilities, so I opted to use PEX tubing, the straight stuff bought at hardware store, not the coiled stuff, since you want it to be straight. I posted the first version as my Crosman Stormtrooper - a concept that didn't receive many accolades, and ultimately gave way to the current stock design. Anyhow, some more printed adapters added to the now printed stormtrooper stock allowed me to fit the 2 stainless steel tubes, which matches well with the Ti-alloy PCP tube and SS fittings of the front of the gun. I'll add a Ti or SS bolt handle at some point as well. The SS tubes were salvaged from a set of solar garden lights, which lit up the path to my front door for the better part of 7 yrs, but eventually succumbed to time and weather and my snowblower. I threw out the plastic bits but saved the SS tubes, figuring they would come in handy some day for something, and voila! Here they are in my 2240 PCP shoulder stock! :drinkers:

So, long story short, or TLDR..., yes I printed that on my 3D printer using PETG.
I was handling this morning, and I think next I'll print a 1 piece fore grip for it - maybe modify something off a 1322 pump handle. Down another rabbit hole I goooooooo,,,,,,,

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PostPosted: Fri Mar 24, 2023 8:31 pm 
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Joined: Fri Jan 22, 2010 1:17 pm
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Location: Kingston, ON
I couldn't find anything suitable for a fore stock on-line so I designed and built one for myself. Version 1 was a fail, Version 2 was close but no cigar... and here is Version 3. If I ever make version 4 it will be perfect fit, I had to add some filler pieces after the fact but it stays put. I like it a lot. And just for YepYep, I put on a flashlight too.


Attachments:
2240 forestock.jpg
2240 forestock.jpg [ 72.68 KiB | Viewed 1431 times ]
For YepYep.jpg
For YepYep.jpg [ 88.11 KiB | Viewed 1431 times ]

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PostPosted: Sat Mar 25, 2023 3:37 pm 
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Location: P.G. B.C.
Cool beans, duke.

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PostPosted: Sat Mar 25, 2023 8:00 pm 
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I see it is a bolt action but what is the round plunger thingy in the rear?

Nice looking unit with a long barrel, bet it shoots nice. :wink:


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PostPosted: Sat Mar 25, 2023 8:25 pm 
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Location: Kingston, ON
WoodWelder wrote:
I see it is a bolt action but what is the round plunger thingy in the rear?

pull back the plunger to cock the hammer, cycle the bolt to load pellet, then fire and repeat. :drinkers:

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PostPosted: Wed Apr 12, 2023 8:29 pm 
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Location: Advocate Hbr Nova Scotia
Very nice

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PostPosted: Thu Apr 13, 2023 1:22 am 
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That is inteesting, Duke, but a longer tube would be MUCH better.

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PostPosted: Thu Apr 13, 2023 7:01 am 
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Daryl wrote:
That is inteesting, Duke, but a longer tube would be MUCH better.

Sigh, Agreed. But at this point it's finished until i get bored again next winter. Apparently the parts are interchangeable with the other models they sell for this system - various Chinese websites are offering them: Aliexpress, E-bay Amazon etc. So I could get a longer tube, but I climbed out of the rabbit hole and plan to stay above ground for the foreseeable future. :drinkers:

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