propane first

then propane-oxygen later

are you sure Sch 40 PVC is rated to 330psi?

if you can get the wisle (sp?) ones, they are funner that the constant beep ones

key word is simple, mine is going to evolve, probly have 5 upgrades as things work

alltogether the pipes are going to be like $150, and im going to have a crapload extra, so if anyone wants some i will think bout buying it so i can sell the extras

i dont know
google it
i have to eat, otherwise i would

well you could watch it better to see where it landed and then get out the flash lights once you know its general location

some surplus military stores have them

thank you I only got 1 year of chem under my belt

but back to the topic at hand does anyone need ABS pipe

what bout something infared on the back and fire at night with nightvision gogles

im a rocketeer and i dont think the sound edmiter would work too well under ground

well, i looked back at calcs and see now that i mistook one of the variables

i cant know the presure till after i fire it

ok, ill try again
but i dont doubt that it will get there eventuaully

i did the calculations on the pressure in my compustion chamber, and it came to 191 psi and i know pvc will be ok for the first version but i plan to upgrade the cannon as time progresses and it will get more powerful

15 bar=217 psi
nope im making a combustion
ABS it the only thing that I will carry and fire, PVC i don't think is safe enough

ok, first off id like to say hello and now for the problem, i plan starting my first cannon, i finished all the spects, and then looked for materials, and learned ABS pressure is non-existent in the US but found some in UK, cost quite a bit. i was wondering if anyone else needed ABS pressure rated p...