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Update:6mm spare parts gun

Built a miniature cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: DYI » Sat Mar 22, 2008 6:12 pm

Copper is a horrible piston material. However, in a gun with such low forces involved, a copper piston isn't a problem. In guns with worthwhile power, the piston would start to mushroom from hitting the bumper with a lot of force. Also, I believe I was referring to a piston made from solid copper bar.

Anyhow, good job bigbob. Whenever I want a plinker for inside, I just hook up a pressure washer handle and 6' of .257" stainless tube (with a breach loading mech) to my N<sub>2</sub> supply and crank it to 500 psi.
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Unread postAuthor: bigbob12345 » Sat Mar 22, 2008 6:17 pm

DYI wrote: In guns with worthwhile power, the piston would start to mushroom from hitting the bumper with a lot of force.


So your saying this gun doesnt have worthwhile power :lol:
I would say it does, i spent 10min making it and have not spent a penny on it and i am having a lot of fun with it.

Well ive checked the piston after about 100 shots and cant see any wear at all so i dont see a reason to change it.
thanks though

and i have acheived near semi auto with it by having one person on the pump and another loading and firing.
doing that I can let of about five 80psi shots in 10sec
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Unread postAuthor: DYI » Sat Mar 22, 2008 6:23 pm

In your case, the piston housing is a softer material than the piston, so it will be destroyed before the piston is.
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Unread postAuthor: bigbob12345 » Sat Mar 22, 2008 6:25 pm

actually the piston slams back into the metal reducers so...
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Unread postAuthor: elitesniper » Sat Mar 22, 2008 6:28 pm

haha that soda thing was for me :D , nice.
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Unread postAuthor: bigbob12345 » Sat Mar 22, 2008 6:31 pm

Well i got sprayed by a bunch of ginger ale in the shot because i didnt expect it to tear that much spraying the contents everywhere so I did it at point blank. But I smell sweet now :D
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Unread postAuthor: Counterstriker » Sat Mar 22, 2008 9:34 pm

Nice once again, Can you take a look at the link in my sig and watch the newest vid? I just wanna see if it's going the right way.
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Unread postAuthor: bigbob12345 » Sat Mar 22, 2008 9:44 pm

thanks
and sure Ill go watch it
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