Page 1 of 4
300+ psi Whammy gun.
Posted: Thu Mar 06, 2008 3:09 am
by Mitchza89
This is the latest in my arsenal. It's an 8mm Boomstick. I've never made a gun so powerful. I got shitty with schrader valves leaking so I hooked up a compressor quick connector between the gun and the pump. It's perfect now.
At 250psi which I normally shoot it at, It hits with a hell of alot of punch. It sounds like a bullwhip going off.
Enjoy
Posted: Thu Mar 06, 2008 3:17 am
by jackssmirkingrevenge
Your pilot volume makes JSR cry
but go on, give us some damage pics
Why "only" 250 psi? Surely it can take 300-400 easily?
Posted: Thu Mar 06, 2008 3:18 am
by Mitchza89
Haha the pilot isn't that bad at all. I could set off the gun with the schrader valve when I was filling up that way but eehhh, It could be sooo much smaller still
I'll post some damage picies tomorrow.
Anyone got an idea of what I should shoot?
Posted: Thu Mar 06, 2008 3:22 am
by Ronaldo Sanchez
Nice work!
What are you using as ammo?
Posted: Thu Mar 06, 2008 3:24 am
by Mitchza89
8mm berries that are hard and pretty heavy so when they hit, they hit hard and splatter like a paint ball.
8mm plastic bb's (totally crap because they are so brittle and just shatter...but they're cheap!)
8mm pebbles with wadding
8mm lead sinkers with wadding
homemade darts
............................
Posted: Thu Mar 06, 2008 3:35 am
by jackssmirkingrevenge
lead sinkers/darts through sheet metal will be appreciated
How about taping together a stack of coins and see how many you can punch through with a nail dart?
Posted: Thu Mar 06, 2008 3:38 am
by Mitchza89
My previous darts havn't worked too well
but I'll see what I can do
Posted: Thu Mar 06, 2008 4:02 am
by jackssmirkingrevenge
No need to get sophisticated, a 1 or 2 inch masonry nail wrapped in tape to fit the barrel works well as long as it's close to the muzzle, that's exactly what I did
here 
Posted: Thu Mar 06, 2008 4:03 am
by wannabie
Great looking gun you got there.
Just wondering what you used as a piston?
P.S have you tried using a solid rubber piston yet?
Posted: Thu Mar 06, 2008 4:06 am
by Mitchza89
It's a solid rubber piston that's in there
. It's an absolutely perfect fit. The only problem is I can't really use the gun at any lower then about 50psi. It takes that much pressure build up behind the piston and to release into the chamber but ehh.....The power at 150-300 is good enough for me
Posted: Thu Mar 06, 2008 4:21 am
by experament-u2
that is nice as chap
smooth and simple, i love the quick connect to
Posted: Thu Mar 06, 2008 4:22 am
by Mitchza89
cheers mate, thanks alot.
Posted: Thu Mar 06, 2008 4:54 am
by ghostman01
i bought dried out peas bout 3000 for 2 bucks pretty good size wize some are a bit big for the barrel some are to small but they work fine in my her rifles they go through the bottom of the can and the put a crack in the top so whats that about 450 fps not bad for a home made lol.
try making hunting darts small and light weight made out of shoelaces and a pin, pm if you want more info
Posted: Thu Mar 06, 2008 5:09 am
by Bubba05
That looks way kewl mate.
For some reason id rather be hit with a paint ball and not a AAA battery? damn that would have to hurt!!
Godd job make looks kewl to i love brushed aluminium
Bubba
Posted: Thu Mar 06, 2008 5:17 am
by Mitchza89
Haha your close mate but not quite
it's polished galvanised pipe and the ID of the barrel is 8mm
Just a wee bit too small for a battery.
Haha I just noticed that ya read wrong in the post before. I shoot 8mm berries, not 8mm batteries