btw don't call it a gun. I had to change the name to "pneumatic accelerator" or else they wouldn't have let me enter

hahahahahahahhaa my hd is pretty retarded to and im always hesitant to tell themwhat im making because they always look at me like im retarded an say wheres your mother dosent she know thats dangerous i mean im 13 but i look like im 16 and im waysmarter than most people there and i speak more than ...

anyone gonna be in Delaware for the comp?

I live in CT but I gonna try to get some friends together and take a train down there..

2" sch 80 is a perfect fit for the nerf football/darts

the problem is the two fittings are dwv, and will be holding sustained pressure... I was pitting on haveing a double wall thickness...

mcmaster is gonna cost me about 30$ for the six new fittings I'll have to buy, fuck!

does anyone have an idea of how to make 3" male/female threaded couplers (I think thats the right name) screw together flush? presently they only screw together about half way

-thanks

there's only two people out of twelve that even know if they have metal pipe off the top of their head. I no longer ask for help

I think I would rather use a piston too. I wouldnt feel safe trusting a rubber tube. Military grade flame throwers may use this design but I doubt they get they're flame thrower bladders from Wal-Mart. Oh and with a gravity feed setup the line back to the tank is devoid of oxygen as it's full of fu...

Well, heres my idea, it came to me after seeing a plunger system used in a cloud. http://i30.photobucket.com/albums/c325/redensekjf/asddsda.jpg Propane is used, or I suppose if the piston was perfectly sealed you could use air, the piston is pressurized from behind and compresses the fuel. The desi...

Well, I couldn't get it to work. With better equipment and more patience than I have, it is obviousl feasible. As long as the flow rate out of the tank is higher than the flow rate out of the pilot hole, the pressure should increase in the pressure bladder. If you are willing to spend $10 on anothe...

I also read that thread about Roland Towers PVC flamer while I was designing mine. Gasoline isn't safe but I would be really paranoid using pressurized Alcohol in a PVC pipe tank. 1.)using air as a pressure source is dangerous... giant pipe bomb should a flame travel backwards. I've heard of paintb...

Using one propane tank as a pressure source and for a pilot flame just won't work. It's the only reason I don't already have a working flame thrower already. why? as long as the pilot flame leaks less pressure than is being put into the bladder it should work fine. infact thats how actual flamethro...

so is your setup like a keg or is it pure gas? I'll probebly switch up the blowgun for another type of valve...also put a check valve in between the valve and chamber for superstitious reasons :wink:. the nozzle tube will be probebly end up being around a foot. and the liquid is undecided, I'll test...

noted... I've got school tomorrow. just gonna run it by my metal shop teacher then start buying parts

have you seen just how small the torch head hole is? it's about the size of this period "."

still think it'll effect inflation?