6mm First Attempt.
Posted: Wed Oct 24, 2012 7:12 pm
Hey all, so I happened across this site while trying to find out how the CO2 cannons on RC naval combat ships work and got a bit hooked.
Hefty dose of forum searching and trying to avoid posting noobish questions and I've made this thing out of an Airsoft barrel off ebay, 1/4" QEV, slide valve, and a 1" Tee with adaptors for a chamber. Couldn't find any schrader valves with bsp threads (I'm in the UK) so just drilled a hole in an end cap for a bolt in tyre valve.
Made a blow forward bolt out of some 15mm copper, 6mm aluminium tube, and 2 compression stop ends. (Wanted it to be dismantlable)
Was using a cheap CO2 tyre inflator to fill it but that blew up so I'm waiting for an aquarium regulator for disposable cartridges to arrive to give that a go. Using a shock pump in the mean time but it takes too long and I want a constant supply.
I cut a slot for a O ring detent but I think the bolt chopped that to bits in about 4 shots, + its not very effective and allows double feeds so that needs some work. BBs feed from a vitamin pill box hopper that pushes onto a 10mm Tee.
Pretty sure the chamber doesn't need to be that big and it could also do with being parallel to the barrel for ergonomics....bit underwhelmed by the power at 10 Bar as well (particularly with steel bbs) so tempted to get a 1/2" QEV but er...yeah...there it is. Many improvements are necessary I reckon!
:thumbright:
Hefty dose of forum searching and trying to avoid posting noobish questions and I've made this thing out of an Airsoft barrel off ebay, 1/4" QEV, slide valve, and a 1" Tee with adaptors for a chamber. Couldn't find any schrader valves with bsp threads (I'm in the UK) so just drilled a hole in an end cap for a bolt in tyre valve.
Made a blow forward bolt out of some 15mm copper, 6mm aluminium tube, and 2 compression stop ends. (Wanted it to be dismantlable)
Was using a cheap CO2 tyre inflator to fill it but that blew up so I'm waiting for an aquarium regulator for disposable cartridges to arrive to give that a go. Using a shock pump in the mean time but it takes too long and I want a constant supply.
I cut a slot for a O ring detent but I think the bolt chopped that to bits in about 4 shots, + its not very effective and allows double feeds so that needs some work. BBs feed from a vitamin pill box hopper that pushes onto a 10mm Tee.
Pretty sure the chamber doesn't need to be that big and it could also do with being parallel to the barrel for ergonomics....bit underwhelmed by the power at 10 Bar as well (particularly with steel bbs) so tempted to get a 1/2" QEV but er...yeah...there it is. Many improvements are necessary I reckon!
:thumbright: