Machined PCP

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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Is it any Good?

Yes
11
85%
No
2
15%
 
Total votes: 13
Goats spudz
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Heres my new pcp that im building, im getting the barrel next week and the grub screws to hold the valve in, all the parts were machined in a Hurco TMM10 except for the custom valve head which was made on a Myford super 7, also i will blue all the steel parts when im finished and hand craft a walnut stock or maybe a milled aluminium one.
Attachments
Filling the input co2 tank to 250 psi, regged down to 5 bar
Filling the input co2 tank to 250 psi, regged down to 5 bar
How i pressurize my input, can fill my chamber to 100 bar in 20 seconds
How i pressurize my input, can fill my chamber to 100 bar in 20 seconds
Valve portion assembled, need 2 grub screws to stop the valve flying out
Valve portion assembled, need 2 grub screws to stop the valve flying out
Filler/Dust cap, for aesthetics
Filler/Dust cap, for aesthetics
Check valve assembled with 3/8" bsp - 1/8" bsp fitting and bonded seal
Check valve assembled with 3/8" bsp - 1/8" bsp fitting and bonded seal
Other angle
Other angle
Spring
Spring
Check valve seat screwed in
Check valve seat screwed in
3/8" bsp threads, a bit rough as the tube ID was .5mm bigger than the tapping drill size
3/8" bsp threads, a bit rough as the tube ID was .5mm bigger than the tapping drill size
o-ring closeup
o-ring closeup
Gas tube with o-rings Grooved in
Gas tube with o-rings Grooved in
Filler check valve, will be replaced with a better one in the near future
Filler check valve, will be replaced with a better one in the near future
assembled custom valve
assembled custom valve
where the spring sits...
where the spring sits...
Custom valve head
Custom valve head
piercing pin cut off
piercing pin cut off
Standard crosman 2250 valve
Standard crosman 2250 valve
1/8" bsp
1/8" bsp
Knurled Filler cap
Knurled Filler cap
Where's my Chuck key?
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Brian the brain
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Gasp!
:D

Can't wait to get my butt kicked!
Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Goats spudz
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Brian the brain wrote:Gasp!
:D

Can't wait to get my butt kicked!
:D !
Where's my Chuck key?
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jackssmirkingrevenge
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Yay for machined projects, looking forward to see the finished results :)
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Goats spudz
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jackssmirkingrevenge wrote:Yay for machined projects, looking forward to see the finished results :)
Did you spot the epoxy on the check valve? :D
Where's my Chuck key?
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Brian the brain
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Why the poll though?

or should I say:

Y U NO CONFIDENCE?!?!?

Looking supersweet!!
Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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jackssmirkingrevenge
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Goats spudz wrote:Did you spot the epoxy on the check valve? :D
No reason why high strength adhesives and machining can't go hand in hand ;)
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Goats spudz
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jackssmirkingrevenge wrote:
Goats spudz wrote:Did you spot the epoxy on the check valve? :D
No reason why high strength adhesives and machining can't go hand in hand ;)
seen as it dosen't bare pressure, well yes :)
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Labtecpower
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nice work :)
I hope I can make something similar after the summer holidays!
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Gun Freak
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Looking good man! Looking forward to more!
OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna" ■ M16 BBMG ■ Pengun ■ Hammer Valve Airsoft Sniper ■ High Pressure .22 Coax
Holy Shat!
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Goats spudz
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Did a quick function test at 70 psi held the valve in with my hand and its quite powerfull, bear in mind this things going to be run at 1500 psi also the grub screws and m6 tap im getting tomorrow and the 24" rifled barrel in .22 im getting next week for free with a steel breech courtesy of a good friend who owns a gun shop :D
Where's my Chuck key?
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Zeus
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Good work, but you said you'll blue it. I'll change my vote if you don't.
/sarcasm, /hyperbole
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Goats spudz
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Zeus wrote:Good work, but you said you'll blue it. I'll change my vote if you don't.
I did a test on some other tube it gives a sexy firearm finish and is polishable


edit: ok, just got back, i have drilled the grub screw holes and tapped them.
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Brian the brain
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The idea of the tube inside of a tube is simply brilliant!

It solved my problem..

I've got the solution for a balance act between a chambersealing valve and a hammervalve inside a tube.
I could not figure out how to get the sealing edge inside of the main tube for the piston to seal on.
the hammervalve will be counterbalanced in the rear of the piston and the diameter will be balancing out the main piston to about 80 to 90%,
Not only cutting down the pilot volume to less than what you'd think would be minimal but also scaling up the pilot valve massively compared to this reduced volume..without making it harder to open...

you've just helped me to figure it all out!!

please excuse me for wandering off topic a bit.
I'll be watching your build like a hawk!
Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
Top
Goats spudz
Specialist 4
Specialist 4
Posts: 458
Joined: Tue Aug 02, 2011 12:31 pm
Contact:
Contact Goats spudz

Brian the brain wrote:The idea of the tube inside of a tube is simply brilliant!

It solved my problem..

I've got the solution for a balance act between a chambersealing valve and a hammervalve inside a tube.
I could not figure out how to get the sealing edge inside of the main tube for the piston to seal on.
the hammervalve will be counterbalanced in the rear of the piston and the diameter will be balancing out the main piston to about 80 to 90%,
Not only cutting down the pilot volume to less than what you'd think would be minimal but also scaling up the pilot valve massively compared to this reduced volume..without making it harder to open...

you've just helped me to figure it all out!!

please excuse me for wandering off topic a bit.
I'll be watching your build like a hawk!
Also if you dont own a shop compressor you can fill a soda stream tank and reg it down like i did, eliminating the need for a first stage!

Image
Where's my Chuck key?
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