well ok one thing i discovered while i was tinkering with it was the fact that i just need to make a combustion chamber lol .... i cut the barrel down so that it was about 2.5 ft long and i just put in some wadding in the tip really tight....when it fired it actually threw the wadding about 15 ft or...

i actually did try hairspray and axe and the nitro lights better out of the three, and what is this about a chamber fan? ive heard about it but i'd liek to know more

nitro fuel is MUCH more powerful than hairspray, its 15% model nitro from my hobby shop.......i was wondering, does it just need a better seal from the ammo to build up more pressure?

well so im trying to make my first combustion cannon.... im was messing around with some extra PVC i had lying around and i bought a grill starter....i have a 4 ft long 1.5 inch wide pipe and a cap on one end that u can screw on and off and i installed the grill started about 2 inches away from the ...