Tennis Ball Combustion Cannon

[Jumpin Jehosaphat]

I want to make a hand-held combustion cannon because the little propane bottles are more portable than carrying around an air compressor.
I was wondering whether tennis balls safe to use in a combustion cannon, or if they will burn.

[noname]

They smell disgusting and if makes the end plug blast out of the chamber instead of the ball leaving the chamber, but they're fine other than that.

[Jumpin Jehosaphat]

Hmm, I might be better off using a CO2 pneumatic gun... but that can expensive.
Maybe I could just shoot golf balls with a combustion.

[noname]

I'm sure if you had the end plug in there really tight it would be fine, it's just that tennis balls fit really tightly in 2 1/2" PVC.

[boilingleadbath]

http://www.burntlatke.com/25cb.html

[lukemc]

I'm sure if you had the end plug in there really tight it would be fine, it's just that tennis balls fit really tightly in 2 1/2" PVC.

what? are you talking about making a cannon and not solvent welding??

[noname]

I have no idea where you got that from. I only screwed in the plug about 2 and a little bit of the threads and it got blown out. Why wouldn't I solvent weld something?

[Flying_Salt]

It will kick really hard and be loud. Why not?

A simple pneumatic can be made cheaply, unless you drop you tools in there then glue it up or something...

[lukemc]

this is an end plug.....

[ammosmoke]

Erm, he meant a cleanout plug.......

[noname]

Yeah, what Ammosmoke said. I thought it would be rather obvious, I guess I was wrong.

[pyromaniac]

If i remember corectly wow made a cannon on compresed propane.

since you dont want to spend money on a reg and you dont want groass tennis balls this may work.

[mark.f]

Either way you cut it, (pneumatic or combustion), the tennis balls will burn. The friction inside the barrel being launched burns the fuzz on the edges of the ball. I, really, have only noticed black spots on the "back" of my tennis balls whenever I use a rich mix, since the spark is at the back of my chamber. The pressure rises enough to get the ball moving before the flame front reaches the back of the tennis ball.

[jimmy101]

Like markfh11q said, a combustion gun for tennis balls will work fine. Some scorching but not a big deal.

A threaded cleanout plug should not blow out of a standard combustion gun, it it does, something is seriously wrong with the plug.

[noname]

Yeah, it's getting sticky and hard to unscrew now. I'll just get a new plug today.