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Air Gun Home Forum Index » Picture Gallery » pumpmaster 760 co2 converstion completed
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pumpmaster 760 co2 converstion completed 
PostPosted: Thu Jan 03, 2013 5:57 pm Reply with quote
MombaxXxFire
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Squirrel
Eradication
Device

A Crosman Pumpmaster 760 with a chopped pump tube then NPT fittings JB Welded and pinned through, i didn't take any pics of it during assembly...sorry its all hiding under the forearm now..found the linkage in a junk drawer that just happened to be the PERFECT size just had to bend it a little bit to reach the bottom of the custom pistol grip i made in a 30 min study hall i had in the wood shop its not the prettiest thing in the world but it works and its pretty comfy lol. the linkage connects to an old paintball co2 connector thing idk whats its called exactly but the project came together better then i had planned!!! and the best thing about it is its a repeater the downside its a smooth barrel so its still EHHHH on accuracy but i can hit a milk jug repeatedly at 30 yards...


bipod bolted on the forearm and a keep neighbors happy device on the front made from the same paintball gun i got the co2 adapter from, stuck 2 sockets with electrical tape wrapped around them inside to "strip" the air the unit is held center with electrical tape and a screw keeps it true. man does it do the job lets just say it goes poof lol


cheap tasco scope..... i use the tank as a stock like a paintball gun, this thing is by far the funnest air gun iv ever shot, i believe the power has been significantly increased its A LOT louder without the moderator ill try to scavenge a crony but no promises lol let me know what you think of my ghetto ingenuity Smile[/url]
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PostPosted: Thu Jan 03, 2013 6:16 pm Reply with quote
MombaxXxFire
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Turns out i did take a photo of the very ruff prototype lol sorry for the poor image quality my phone isnt the best photo taker :/
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and some more photos 
PostPosted: Thu Jan 03, 2013 8:18 pm Reply with quote
MombaxXxFire
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better pic of the linkage i think it belonged to a lamp at some point











moderator with example of the socket


cheap tasco 3-7x20 scope with oval field of view
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PostPosted: Thu Jan 03, 2013 8:48 pm Reply with quote
ZipSnipe
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Good work , ain't pretty but it is clever. You crony it yet?

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PostPosted: Fri Jan 04, 2013 3:54 pm Reply with quote
MombaxXxFire
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No im trying to find access to one but idk anybody with one lol I'll ask my step dad if he knows anyone with one, hes the treasurer of the local gun club he has to know somebody.
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PostPosted: Fri Jan 04, 2013 11:43 pm Reply with quote
toadmyster223
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Someone link the post that I think Radar made about using a microphone and your PC or laptop to chrony shots. Try as I might, I cannot find it.
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PostPosted: Sat Jan 05, 2013 8:50 pm Reply with quote
MombaxXxFire
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Is that even possible???? that would be really cool if there were such a thing but i don't see how or if it would even work.
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PostPosted: Sun Jan 06, 2013 1:57 am Reply with quote
Slavia
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Here's the link:
http://www.airgunhome.com/agforum/viewtopic.php?t=8971

I would definitely download the (free) SoftChrono software. It does a lot of the work for you.

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PostPosted: Sun Jan 06, 2013 5:31 am Reply with quote
MombaxXxFire
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SWEET thank you so much lol ill get to it asap lol. I really wanna know the fps this thing is putting out i know its at least on par but i still wanna know the numbers.
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PostPosted: Sun Jan 06, 2013 11:02 am Reply with quote
AirGunEric
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You retained the stock 760 valve in there?

Also- I would suggest being sure your pinning of the fittings is secure- don't want something popping off in your face...

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PostPosted: Sun Jan 06, 2013 6:10 pm Reply with quote
MombaxXxFire
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Yeah i retained the stock valve in there. The pinning is secure i used a 3/8in screw to pin through the wall and npt fitting then slathered jb weld around every thing so there is no way its coming of even if i wanted to change the valve with i wish i did because i can hear a slight leak in the internals and i believe its the valve.
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PostPosted: Tue Jan 08, 2013 2:54 pm Reply with quote
Big Ern
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Pretty cool, I like it! There is an app. for Android phones that turns your phone into a chrony. There is a free version which I have and the full version for $3.85. It's called chronoconnect mobile. Youtube has some videos of it in action.
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PostPosted: Fri Jan 11, 2013 11:27 pm Reply with quote
MombaxXxFire
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that sounds a lot easier then the program previously mentioned i installed it ran it to see what it was all about and its looks really confusing lol
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PostPosted: Sat Jan 12, 2013 12:33 am Reply with quote
MombaxXxFire
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thats a very interesting app you can get so much info from fps to ft lbs when you give all the pellet info
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PostPosted: Sun Oct 05, 2014 9:35 pm Reply with quote
OverlordKula
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Dude I'm new here n I'm lookin to do this same CO2 conversion to my 760 Pumpmaster, what size NPT fitting didja use?

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pumpmaster 760 co2 converstion completed 
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