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simple pcp (video)

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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simple pcp (video)

Unread postAuthor: wyz2285 » Tue Sep 06, 2011 6:43 am

Hi everybody
As most of you knows, I found a way to build a simple hammer valve using a blowgun. So I used the valve I showed here: http://www.spudfiles.com/forums/hammer-valve-airgun-how-tovalveandtrigger-part-t23202.html to make a simple pcp gun, just to see the power, and at 400 psi it´s very decent with a pellet, pretty good compare to commercial pellet guns :P . The chamber isn´t big, so I can charge it with my shock pump. I also combined the recock with reload, but I didn´t put a magazine on it, maybe later I will add a revolver style magazine.
I will use a bigger chamber and a better stock on this gun and use more pressure(about 800 psi?)
Didn´t use a lathe or mill, looks like I didn´t really need to use them either :roll: . Yeah I know I need to paint it, but as I´m not sure if I´m going change it more or not, so doesn´t worth to paint it now.
[youtube]http://www.youtube.com/watch?v=6ZyX-oruKus[/youtube]
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Attachments
IMG224.jpg
IMG225.jpg
breech open, recocked hammer
IMG226.jpg
breech closed, ready to fire
IMG221.jpg
made a simple but ergonomic pistol gap for it
IMG230.jpg
fiberglass to cover everything, still need some sanding
IMG234.jpg
finished for now, I´m happy with it :) detachable buttstock
(scope not added yet)
IMG237.jpg
IMG238.jpg
IMG242.jpg
IMG243.jpg
Last edited by wyz2285 on Mon Sep 12, 2011 4:20 pm, edited 3 times in total.
CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Re: simple pcp

Unread postAuthor: jackssmirkingrevenge » Tue Sep 06, 2011 6:55 am

wyz2285 wrote:Didn´t use a lathe or mill, looks like I didn´t really need to use them either :roll:


Machine tools help, but with some creativity and a lot of epoxy, much can be achieved - and this proves it nicely, good job! How many useful shots do you get per 400 psi fill?

more pressure(about 800 psi?)


Beyond 500 the valve will probably start to leak...
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Unread postAuthor: wyz2285 » Tue Sep 06, 2011 7:03 am

Beyond 500 the valve will probably start to leak...

I have taken this valve to 800, no leaks, but I wouldn´t use 800psi every time.
with 400psi, about 5 nice shoots, pressure drop of 20 to 25 psi between each shoots
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: Crna Legija » Tue Sep 06, 2011 7:10 am

WOW that looks great!!, you really loving the hammer valves lately.
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Unread postAuthor: wyz2285 » Tue Sep 06, 2011 7:19 am

yeah they are simple and you can get multi shot with it, and I really like making a realistic looking trigger :)
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: mattyzip77 » Tue Sep 06, 2011 9:11 am

cool gun dude, I might make a hammer valve some day, Im on this piston kick at the moment!!!
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Unread postAuthor: cammyd32 » Tue Sep 06, 2011 2:48 pm

Looks like a great compact design, a great plinker it must be :D
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Unread postAuthor: Gun Freak » Tue Sep 06, 2011 4:00 pm

WOW! Thats great! Way to make it cock and open the breech at the same time. This is very nicely done!
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Unread postAuthor: wyz2285 » Tue Sep 06, 2011 4:18 pm

A lot of people have told me to combine the reload action and recocking the hammer actually :D but because this it's a little hard to pull the bolt, so later I will find a way to use a lever action to replace that, something like some FX airgun's bolt action :)
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Last edited by wyz2285 on Fri Aug 24, 2012 11:55 am, edited 1 time in total.
CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: Brian the brain » Wed Sep 07, 2011 4:04 pm

It looks fantastic but 800 psi in that thing feels like an accident waiting to happen...
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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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Unread postAuthor: wyz2285 » Thu Sep 08, 2011 3:45 am

Finished sanding and painting, the shining brass and aluminium looks really great :P the sight works well, not going to mont a scope after all.
Some quality photos
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Attachments
DSCF0680.JPG
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DSCF0681.JPG
DSCF0684.JPG
CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: Crna Legija » Thu Sep 08, 2011 3:51 am

looks great but does your thumb hit the stock? looks like it would
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Unread postAuthor: wyz2285 » Thu Sep 08, 2011 4:05 am

? I didn´t get it :?:
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: Crna Legija » Thu Sep 08, 2011 4:13 am

wyz2285 wrote:? I didn´t get it :?:


its probably just the pics but it kinda looks like the brass part of the stock is right where your thumb would go passed
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Unread postAuthor: wyz2285 » Thu Sep 08, 2011 4:59 am

Hum it does looks like it would lol but in reality it doesn't, it's very ergonomic :)
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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