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40mm launcher

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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40mm launcher

Unread postAuthor: farcticox1 » Mon Mar 04, 2019 6:44 pm

Starting a post for my 40mm lancher, planned ammo is foam balls (practice golf balls) Got a few parts assembled, waiting for a 1/2" QEV off Ebay.
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Just going for straight layout to prove it works

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001 (1).jpg


PVC pressed in with a bit of epoxy as well and a M4 screw as a stop.
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Re: 40mm launcher

Unread postAuthor: Cthulhu » Mon Mar 04, 2019 9:38 pm

Love this project! Are you going to make a nice stock for it?
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Re: 40mm launcher

Unread postAuthor: WOW!! » Tue Mar 05, 2019 1:01 pm

Looks great! What kind of pressure are you going to run in it?
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Re: 40mm launcher

Unread postAuthor: farcticox1 » Tue Mar 05, 2019 4:56 pm

I hadn't planned on a stock as I'm thinking it will sort of be fired from the hip :idea:

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Pressure will just be from my compressor 150ish, I've got to build that as well :shock:
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Re: 40mm launcher

Unread postAuthor: farcticox1 » Wed Mar 06, 2019 7:23 pm

A new layout that will allow for a stock :idea: dropped the second chamber. Need the QEV to get final measurements. :?

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Re: 40mm launcher

Unread postAuthor: farcticox1 » Mon Mar 25, 2019 6:11 pm

Got the QEV, let the building commence :D
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Re: 40mm launcher

Unread postAuthor: farcticox1 » Sat Mar 30, 2019 4:24 pm

Main components finished ready for assembly, stock/grip made from 3/4" plywood will attach to brackets.

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Re: 40mm launcher

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Re: 40mm launcher

Unread postAuthor: farcticox1 » Sun Mar 31, 2019 1:36 pm

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Re: 40mm launcher

Unread postAuthor: jackssmirkingrevenge » Mon Apr 01, 2019 3:29 am

Nicely done! You should scope out your local airsoft players, they would probably pay good money for a similar device...
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Re: 40mm launcher

Unread postAuthor: farcticox1 » Sat Apr 06, 2019 1:34 pm

First fitting of the stock, it is actually the MkI Wii light gun stock that I kept just in case, fits perfectly, just need to reshape the top aluminium brackets.

MkII Wii gun
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Re: 40mm launcher

Unread postAuthor: Moonbogg » Sat Apr 06, 2019 10:47 pm

This is looking pretty nice. Looks like a fun little launcher. I really love the break barrel design and locking mechanism, plus it seals which is not always easy to do. Foam golf balls are a good idea as well if using around the house like you have shown. Good stuff. Looking forward to some slightly higher pressure testing perhaps...
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Re: 40mm launcher

Unread postAuthor: farcticox1 » Sun Apr 21, 2019 11:28 am

Stock fitted, going to make some side plates to cover the QEV.

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Dry fire at 150psi, a good puff of vapor? fired a dimpled foam golf ball, went over the house, probably 200 feet.

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