I got a compresson tester it is reading about 80 psi i think iis that about right.

Dose any one know what the compression for a 100 cc dirtbike is.

If you had two chambers rather then one on a pneumatic would it more powerful then if you had one chamber. And if so is it worth putting an extra chamber on.

Just hook up two 9v batterys.

Dont bother putting a spark plug in your cannon just wire up multiple sparks with a bbq sparker it works better and then you dont have to put a big hole in your chamber.

Dom wrote: cause with Combustion you cant shoot things like Ice.

You can shoot ice with a Combustion cannon! I did it many times and it dose a lot of damage.

It is the part were u put the rench on it.

Thanks for the spud buxs.

Is it a chain tenser or a chain guide for a bike??

I used a spark plug it was to samll and its not worth putting a big hole in your cahmber screws work better.

What do you do when u add them to the time line?

Look how small they come out.

It wont work.

How do u add pics? I cant find out how.