SpudFiles

Hey all, i really want to build a shotgun style golfball gun similar to Goats MCS, 1st picture below-break action. However, i like the modular look of the second gun pictured- boogieman's zooka.

I want to keep the looks of both, but i want to use a piston valve in it- either barrel sealing or coaxial. I'm looking for about the same performance as a combustion gun that fires golfballs. The big problem is getting that streamlined look. Now i know someone will tell me to make a coaxial.. but the thing with that is that a) if i want it to be break action, i'll have a lot of dead space, and b) i'll need the chamber to be fairly long in order to get the volume up with such a big barrel in it, and i want to keep it modular- preferably 3 feet max.. now i don't know what to do to keep the streamlined look, so any help is greatly appreciated.

My biggest thing is the streamlined look..

oh and in case you're wondering why i can't use a sprinkler valve, it's because a) i'll be using CO2 and b) i'll be operating at higher pressures, so then a coax might work.. honestly i have no idea right now any help would be great.


EDIT: i think i'll do a coax style thingy maybe

<img src="http://i167.photobucket.com/albums/u148 ... ure025.jpg">
<img src="http://advancedspuds.com/stuff_009.jpg">

Yeah, we'd all love to have one just like those.
And so build one if you want it so bad.

ummm i'm going to, did you read the post though??

Are you planing on a bore big enough to shoot golf balls? Or was that a example? With a smaller bore a stream lined launcher would be easier to configure, I think.

yea, a golf ball gun. I think i'm going to go with a coaxial, but i think what i might do is put a slightly smaller piece of PVC into the chamber to act as the "barrel," then bring it up to golf ball barrel outside the chamber, that way i get a bit more chamber volume. not sure about restriction of air though? IF i put a 1" or 1.25" of PVC in the chamber instead of 1.5" i don't think it would restrict flow too much, do you? I'll run it in GGDT once i get home- can't run exe files here at school..

1" shouldn't choke it very much at all, not enough to notice by eye but a chrony would notice I think. As for the GGDT, look around the forum, I've seen 2 seprete threads started about it now, I don't know if I'd trust it or not.

well it'll give me a start... but i dunno yet.

Why not extend the piston to the sealing face rather than the sealing face to the piston.
http://www.spudfiles.com/forums/preload ... t8702.html

Known as a toolies style valve to the people who have been around here awhile. http://my.freeway.net/~toolies/

It will allow more chamber volume and would probably be more efficient.

That’s what I did, Clide, saves a lot of space.

Funny, when ever I think I’ve come up with something new, I find out Jack beat me to it…



But yeah, your best bet would be what Clide said.

wait... soo i get it... i think.

Thanks guys

yea i got it now