Slim Biggins - Sawn-Off QEV Launcher

[MrCrowley]

New Video [10/05/2010]:
[youtube][/youtube]

I was getting bored over the holidays so I gave the <A HREF="http://www.spudfiles.com/forums/viewtop ... 28">SGP</a> a little make over

The main setup:

Barrel: 1400mmx15mm paintball barrel
Chamber: 1.5"x12" and ~1"x12"
Valve: 3/4" Quick Exhaust Valve
Pilot Valve: 1/4" ball valve
Fill Valve: Same 1/4" ball valve
Operating Pressure: 80-115psi (150psi when I make a pump)
Ammo: .68 paintballs

The other variation, is more of a BtB tribute sawn-off style (without the high pressure )

I don't have any damage pictures but I did do a few test shots.
At 90psi with the long barrel, paintballs go through one side of my mini-fridge. With the short barrel at 90psi, the mouseballs also go straight through.

Just thought of a name: Slim Biggin's

Oh and yeah she's not very pretty, got no spraypaint to paint the pilot setup and the teflon tape on the chamber is a few months old and has yellowed

Anyway, here she is:

[biggsauce]

Nice name for a nice cannon

Puts a paintball through a side of a mini fridge...
To say the least, OUCH

[elitesniper]

Cool Mr.C, I love the name, nifty high powered plinker eh?

[MrCrowley]

Thanks guys, and yeah it's pretty damn powerful.

The paintballs were denting my fence pretty badly too, some cracking the otherside. I've actually got the gun in my lap as I type now, I love the look and feel of the 'sawn-off' setup

[Lentamentalisk]

Wow, that has got to be the ugliest gun you have made yet Still, it more than makes up for it in power. Double thumbs up!

[MrCrowley]

Wow, that has got to be the ugliest gun you have made yet

Hell yeah! I was going to name it the Ugly Duckling, but I like Slim Biggins better

I'm thinking of painting it, the whole pilot volume setup is old parts that have been painted and then scratched over so they look like sh|t.

[Gippeto]

The sawed off look s really starting to appeal. Nice job Mr. C

[jook13]

thats a really neat gun. tis a shame its used at such pressures, with most everything being rated as much higher.

[MrCrowley]

Thanks Gippeto and jook13

Yeah I know, i'd take it up to 200psi, doesn't bother me even though the QEV has only a 150psi rating.

[XxtriviumxX]

Hehe that is one incredibly ugly gun.

But its not the looks that count... Its the carnage, and that thing is a beast.

[MrCrowley]

Thanks, I decided i'm going to paint it, for the intimidating factor and I can't stand to have such a shotty looking cannon

[psycix]

Ah thats a nice one.
Though whats the PVC barrel needed for?
Just go all-metal

[JDP12]

very nice looking gun MrCrowley nice job on it

[Brian the brain]

Eehmm..The sawed-off style requires a reservoir as snug under the barrel as possible ( use an elbow wich threads right into the valve)
Some trimming might be needed.

But absolute essential is the ballvalve trigger and bend as handle.

Other than that it does seem like a very nice gun to play around with.
Just not something I would compare to the sawed-off when it comes to looks.

Coming to think of it, I have seen a lot of "copies" that did not even look like it.
Not that that's a bad thing though.
I like the use of the 45's

[MrCrowley]

Ah thats a nice one.
Though whats the PVC barrel needed for?
Just go all-metal

Thanks. And because copper is expensive and hard to get. Well not hard to get, I just have to go for a drive for 40minutes so I can get an off-cut of 1m.

Eehmm..The sawed-off style requires a reservoir as snug under the barrel as possible ( use an elbow wich threads right into the valve)
Some trimming might be needed.

Yeah I was thinking about that, but nothing threads all the way into a QEV. It was really bugging me, I tried a bunch of fittings too.

But absolute essential is the ballvalve trigger and bend as handle.

Other than that it does seem like a very nice gun to play around with.
Just not something I would compare to the sawed-off when it comes to looks.

I actually had a spare 1" sprinkler valve piloting it at one stage
Definitely not, it is bloody ugly and fittings aren't exactly snug like on your sawn-offs. And your Sawn-offs have piston valves, which I'm tempted to put on this. And use the QEV for something else. So once I make a pump, I can go high pressure. Tempted.

Coming to think of it, I have seen a lot of "copies" that did not even look like it.
Not that that's a bad thing though.
I like the use of the 45's

Well it's not like I set out to copy your design or anything, just rotating the chamber 180 from it's last design, ended up like a sawn-off because of the short length, and everyone knows sawn-offs are automatically directed at you

Thanks, those galv fittings were a b|tch to line up, at one stage I was sitting on the plumbing wrench with all my weight and it didn't move one bit. I had to get out the sledge