Login    Register
User Information
We are a free and open
community, all are welcome.
Click here to Register
Who is online

In total there are 54 users online :: 6 registered, 0 hidden and 48 guests

Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], Google Adsense [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Global Moderators
global_moderators.png CS


Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
  • Author

Unread postAuthor: metallover » Fri Apr 25, 2008 11:50 am

What about Oxygen?
  • 0

User avatar
Posts: 95
Joined: Fri Apr 18, 2008 12:20 pm
Reputation: 0

Unread postAuthor: THUNDERLORD » Fri Apr 25, 2008 12:04 pm

oxygen is $7-8 per container and propane $2-3 (16-18oz. can)
I'd recommend, stick with starman's advice or refer back to bigbob12345's first reply. If you want something more powerful, build a metal one.
  • 0

Major General
Major General
Posts: 1264
Joined: Fri Mar 28, 2008 1:42 pm
Reputation: 0

Unread postAuthor: DYI » Fri Apr 25, 2008 12:07 pm

Oxygen isn't even a fuel...

However, if you're talking about replacing the existing 20% O<sub>2</sub>/79%N<sub>2</sub> mix with 100%O<sub>2</sub> and then adding the correct amount of fuel, I'd say don't do it in PVC. PVC is already a very poor chamber material, and the sharp, high pressure spikes of oxygen enriched mixtures don't help existing fatiguing problems in the chamber material.

For a given oxidiser, ethyne is likely the most powerful commonly available gaseous fuel you can use, and MAPP is the most powerful you can use if you'd like the chamber to remain intact after the first shot.
  • 0

Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
User avatar
Lieutenant General
Lieutenant General
Posts: 2861
Joined: Sat Jul 07, 2007 8:18 pm
Location: The People's Republic of Canuckistan
Country: Turks and Caicos Islands (tc)
Reputation: 9


Return to Combustion Cannon Discussion

Who is online

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], Google Adsense [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'