I am going to have a go at finding a longer barrel about a meter or yard long and use a 2kg co2 fire ex bottle but pump to 100 psi which hopefully be equivalent to using a 1 kg bottle at 200 psi. 100 psi on most track pumps is not that much effort to get to pressure. I am also going to up the QEV va...

I have a dive pony or buddy bottle about .6 in size, i was wondering how many 200psi fills i can get out of it, may be worth the effort to get it up and running.

In some countries you would want to make it quieter than attract attention to nosey parkers who would complain or ring the cops. Alright to make it louder if you live in the middle of nowhere. I think the ideal cannon would be a quiet system, thats cool.

I have built a nice little 1kg chamber golf ball launcher with QEV valve and slide release, the barrel about 13inches long with bore diameter .5mm windage play with ball. Using a skirted ball from pvc tubing the ball shoots fine at 100psi, twice as far with 200. A bit new to the game and asked many ...

Air tanks are the best bet but my air cylinders are heavy dive cylinders for my airguns so a bit of a lump to carry about. I was thinking of a small12 volt car compressor to carry but i don't think you can get to 200psi at the most. I did have a try with a Co2 bike pump cylinder but it was useless ....

Hi i am new to this great site. Been launching golf balls and other projectiles for years now by other means other than air and have got back into pneumatics again, so i have quite a few questions to ask. As a safety rule myself i only deal with metal valving piping and pressure chambers , as i am a...