No reply??

and is the hole 4% for propane and 3% for butane true? because ive been using 3%

yes i know propane is the best but idk if 108ml is optimal and what is diborane?

i know that but ive seen people shoot huge things like softballs and ive achieved over 100 yards using axe...

it worked but still only launched my orange about 50 yards how do i achieve the magical 100+????

thanks! ill try that

thanks so i have a 35 ml cooking syringe all i do is fill it up 3 times and pour that in then cap it off and wait? like..... 2 mins or 10-20?

Ok so i measured some more its ACTUALLY 17.5 inches tall and 4 inches wide (diameter) so can someone tell me what 3% would be in ml. I have propane and butane in my garage.

And if i meter it right by simply waiting a few mins allowing it to mix will cause the projectile to fly much further??

ok i added roughly 100 ml of butane and it shot surprisingly but not near as far as axe would propel it....

a cc equals a ml

well i know that inch to cm conversion is 2.54 so 200 X 2.54= 508...

Hey guys so i built my first cannon its 4 inch combustion with 3 inch barrel. a BBQ grill sparker and a PVC screw back pretty basic. i tried metering propane and butane multiple times with all failures. the dimensions of the combustion chamber are
16" tall 4" wide so pie radius squared times 16 is ...