hahah but I like air wick smell in the morning xDD

Now I added some epoxy to the bottle caps and where the wires get in the chamber, its working just perfectly and shooting around 200-250 meters.
That photo of the spark gap I took whem I made it, and it didn't work on first test. After that I ...

In fact theres no chance for the bottle caps fly out because I put them from inside to outside so the combustion press it against the chamber wall. What I made wrong was the silicone, I should have used something more powerful and designed to hold high temperature.

While I use simple fuel and no ...

Yes you guys are right, and actually I forgot to thank TheBug and MushiYoshi for their tutorial @ youtube, Ill do that later.

Radiation:

This pvc is none-pressure rated, thats why i covered it with that extra muffs on the middle of the chamber, the muffs are much stronger than the tube so ...

Thank you.

Yes, its really kicks like that. My little brother(14) that was filming wanted to shoot once, and I let him do that.
It almost got of his hands \o\

Probably tomorrow I'll make some shoots and take pics whem my camera batery loads.

Hi fellows from around the world, this is my first topic @ SF so Ill introduce myself here. My name is Arthur, 20 years old and I live in Rio Grande do Sul - Brazil.

Here I show my first potato cannon, and I'm not sure if its possible to do it with a video, so if it is not allowed just tell me.
My ...