SpudFiles

right now i do not have allot of time on my hands,so if you would be so kind as to help me it would be greatly appreciated.
I am making a combustion,I have 75mm pressure rated pvc pipe for a chamber,how long must the chamber be and what size and length must the barrel be?

thanks

download the combustion cannon tool off calculators sectuon, that will tell you the correct c:b ratio.

Dude you have been here long enough to know damn well that it is entirely up to you and depends what you want to use it for and how portable you want it, blah blah blah...

Use your head man. Cut the chamber to how you like it then worry about a barrel after that.

Ya but dude,i havent made a combustion befor

The last combustion i made was 2 tennis ball cans taped together, more of a morter really. About 25 years ago!

"I havn't made a combustion before"

Would you like to tell us how that prevents your from reading any of the previous (dozen? I don't know, but it's alot...) times we'v answeared this question before.

hmm.. im surprised that you actually don't know that, seeing how long you have actually been with this site. i have an equation you can use, just take the volume of your barrel and multiply it by 3, then use this equation to get the height of the chamber.

height=volume/(pi x radius squared) basically h=v/(pi x r^2)

hope this helps

~FLINCHY~

thanks,and iv only been here since march

damn man, do some research if you have the time to do a post you have the time to go on burnt latke. did i spell burnt latke right?

You've been here ~74 days and you still havn't found the damn search function?

Nevermind that I'm pretty certain we've discussed this at least one time other than this in the past couple months...

At the very least, you could have shown up <i>after</i> thinking about the matter a little bit.
I'm discusted that you guys think we're going to spoonfeed you your entire life. Stop being a baby and fend for your 'ing self!

**ok next time i wont be lazy