SpudFiles

I seen a lot of advanced combustion cannons, and I have a lot of parts (probably enough to make one). But I noticed that the reducers are DWV-is that fine or do I need to find parts that are rated for some pressure?
I just want to double check, I don't need to blow up a tank thats next to my head.

It'll be fine. Wear safety glasses though, especially if you're using metered propane.

I was considering using MAPP. I searched and read about the 4.6% mix and that on it already. I built it in my head before anything.

what if your whole cannon is dwv, but constructed properly, can i still use metered propane?

You can, but you are NOT safe.

abs reducers are weak you should use a coupler bushing set up

How likely is it to blow up..?

it doesn't mater how likely it will blow if, if it does your screwed so it only takes that 1 time.

but even that one time the abs reducer is only gonna split at the seam due to the way abs is extruded, but still you dont want the $hit scared out of you when that weak recuder goes boom, and you realize that you should have gone with a coupler and bushing setup

ABS is far better than PVC as far as DWV pipe is concerned, but they're both not rated for pressure (I saw a rating of 50 PSI on some DWV once, though).

BigGrib wrote:but even that one time the abs reducer is only gonna split at the seam due to the way abs is extruded, but still you dont want the $hit scared out of you when that weak recuder goes boom, and you realize that you should have gone with a coupler and bushing setup

he never said he was using ABS, but i would suggest it if you must go DWV

yeah its best to get pressure rated becuase, then the spark ignites ther is and explosion in the chaber and after a while it may start to crack trust me cracks with propane is noooo god> 8)

Poster above has no idea what he is talking about. Combustion abs dwv is safe with propane.

*5*STAR*GENERAL* wrote:yeah its best to get pressure rated becuase, then the spark ignites ther is and explosion in the chaber and after a while it may start to crack trust me cracks with propane is noooo god> 8)

Your a moron.

5 star general-You're a new member so its, tough to take your word without a good reputation on here. And please check your grammer next time.
Anyways, propane is fine to use with abs and dwv then...

example: First is a DWV and second is an ABS
http://www.spudfiles.com/forums/the-bes ... 11674.html
http://www.spudfiles.com/forums/mapp-in ... t7396.html


How about using MAPP gas instead? Any other problems that I wouldn't encounter with propane? (That's besides the 4.6 mix and 94psi tank pressure)