Search found 113 matches

by GalFisk
Fri Aug 25, 2006 7:29 am
Forum: Combustion Cannons
Topic: Wire to use with a stun gun?
Replies: 6
Views: 1175

Wire for meter test leads is nice, it has good insulation and is fine-threaded and very flexible.
by GalFisk
Fri Aug 25, 2006 7:15 am
Forum: Pneumatic Cannons
Topic: 250 psi
Replies: 15
Views: 2912

I'd go with copper( and soldered fittings) as well, I'e built several copper guns this way that are run safely at 300 psi.
I hope you're not planning on using one of those 12V compressors to get to 250 psi, they're slow and break easily.
by GalFisk
Tue Aug 22, 2006 11:29 am
Forum: General How-To & Discussion
Topic: Camera Flash + Ignition Coil
Replies: 7
Views: 684

Keep the small white wire going to the flash tube as well, it is the trigger wire. When connected as in the drawing, the coil will spark when you trigger the flash.
by GalFisk
Fri Jun 09, 2006 5:54 pm
Forum: General How-To & Discussion
Topic: Burst Disk Marble Ammo
Replies: 7
Views: 7981

The barrel ID is about 30 mm. You don't need a bottle, just some kind of jig that will hold the projectile and plastic while you cut and weld it, and that shapes it so it fits in the cannon. The method could be modified to make burst disk ammo for union or camlock loading, which would be nice for hy...
by GalFisk
Fri Jan 20, 2006 12:05 pm
Forum: Pneumatic Cannons
Topic: Semi-automatic copper airsoft gun (updated)
Replies: 6
Views: 3518

thanks for the comments :)
I order my parts from Rinkaby Rör (http://www.rinkabyror.se) and Sigro (http://www.sigro.se), between them they have a really good selection.
by GalFisk
Sun Oct 30, 2005 8:29 am
Forum: Pneumatic Cannons
Topic: Semi-automatic copper airsoft gun (updated)
Replies: 6
Views: 3518

Semi-automatic copper airsoft gun (updated)

I updated this post, since the original image links were long dead. The gun was also improved since the last post, and is firing pretty reliably. the only problem is that the trigger valve does not reset reliably with the current spring and 300 psi pressure (the design pressure), I may try some lith...
by GalFisk
Thu Sep 15, 2005 5:49 am
Forum: Combustion Cannons
Topic: Coke Bottle Combustion
Replies: 23
Views: 13973

It shoots maybe 80-180 meters/yards depending on ammo. The longest shot was with a hunting arrow, I'd estimate carrots to 100 and marbles to maybe 130m on average. But as we all know, range estimates can be wildly inaccurate.
by GalFisk
Mon May 09, 2005 12:38 am
Forum: Pneumatic Cannons
Topic: Copper Marble Cannon
Replies: 22
Views: 13668

Thanks for the comments. It's using a normal barrel-sealing piston valve. More cannon and damage pics can be found in my gallery: http://galfisk.kaaven.net/gallery