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

In total there are 72 users online :: 3 registered, 0 hidden and 69 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Chamber Volume

Post questions and info about hybrid (compressed gas with fuel) powered cannons here. This includes discussion about fuels, ratios, ignition systems, build types, safety, and anything else relevant.
Sponsored 
  • Author
    Message

Unread postAuthor: Jared Haehnel » Fri Feb 29, 2008 1:46 pm

Yes I do...sorry for not being clear and thanks for bring that up....
  • 0

User avatar
Jared Haehnel
Colonel
Colonel
 
Posts: 611
Joined: Tue Feb 19, 2008 4:15 pm
Location: White River Jct, Vermont
Reputation: 0

Unread postAuthor: STHORNE » Fri Feb 29, 2008 1:52 pm

must we really be that picky D_Hall? I think everyone else knows what Jared Haehnel means when he compares "sch 80" to "steel pipe".
  • 0

Forum Rules - follow them or else!
“Happiness is the meaning and the purpose of life, the whole aim and end of human existence”
User avatar
STHORNE
Donating Member
Donating Member
 
Posts: 1208
Joined: Wed Feb 14, 2007 7:50 pm
Location: Kewaunee, Wisconsin
Reputation: 0

Unread postAuthor: Jared Haehnel » Fri Feb 29, 2008 1:59 pm

I think we just hijacked this dude's thread...hope he finds it some what informative :)
  • 0

Last edited by Jared Haehnel on Fri Feb 29, 2008 2:39 pm, edited 2 times in total.
User avatar
Jared Haehnel
Colonel
Colonel
 
Posts: 611
Joined: Tue Feb 19, 2008 4:15 pm
Location: White River Jct, Vermont
Reputation: 0

Unread postAuthor: STHORNE » Fri Feb 29, 2008 2:32 pm

jared haehnel wrote:I think we just hijacked this dude thread...


a "dude thread"? lol
getting a little careless with our typing, aren't we?
  • 0

Forum Rules - follow them or else!
“Happiness is the meaning and the purpose of life, the whole aim and end of human existence”
User avatar
STHORNE
Donating Member
Donating Member
 
Posts: 1208
Joined: Wed Feb 14, 2007 7:50 pm
Location: Kewaunee, Wisconsin
Reputation: 0

Unread postAuthor: LikimysCrotchus5 » Fri Feb 29, 2008 3:29 pm

Jared Haehnel wrote:I've heard of people making them from sch 80 I don't know if its any cheaper or if its safe but it certinatly would be easier to put intsall chamber fan and a spark ignition.


well if you make it out of sch 80 PVC, then you are safe up to a 4x mix i believe. In hybrids, chamber fans are not needed because the air you already pump air into the chamber mixes the gases.

sthorne wrote:must we really be that picky D_Hall? I think everyone else knows what Jared Haehnel means when he compares "sch 80" to "steel pipe".


And you should be specific about steel or pvc and what schedule your are using because it does matter.
  • 0

4SPC, My 4" piston 3" porting cannon
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka
User avatar
LikimysCrotchus5
Brigadier General
Brigadier General
 
Posts: 1100
Joined: Tue Sep 04, 2007 10:16 pm
Reputation: 0

Unread postAuthor: D_Hall » Fri Feb 29, 2008 5:42 pm

sthorne wrote:must we really be that picky D_Hall? I think everyone else knows what Jared Haehnel means when he compares "sch 80" to "steel pipe".

As one who has some sch XX pipe at home (way beyond sch 80... and yes, I paid for it myself)? Yes, I think we should be. Sch 80 by itself means damned near nothing.
  • 0

User avatar
D_Hall
Donating Member
Donating Member
 
Posts: 1759
Joined: Thu Feb 07, 2008 7:37 pm
Location: SoCal
Reputation: 6

Unread postAuthor: Killjoy » Sun Mar 02, 2008 12:40 am

To answer the main question, most hybrids are built out of smaller pipe for convenience. I have three different sizes (only posted one). FEAR uses 6" sch 40 steel pipe, another uses 2" sch 40 pipe, and the last one uses 1.5" steel pipe and there all fine. Pretty much as long as the pipe can take the pressures you're good, so using 3" steel pipe will be fine.
  • 0

Stanford Class of 2012

"In the end our society will be defined not only by what we create, but what we refuse to destroy"- John Sawhill

Killjoy
Brigadier General
Brigadier General
 
Posts: 1053
Joined: Sun Nov 12, 2006 12:51 am
Location: New Mexico
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: SpudFarm » Sun Mar 02, 2008 10:29 am

if you got the mony needed... build it and play it safe :)
  • 0

User avatar
SpudFarm
Donating Member
Donating Member
 
Posts: 2563
Joined: Sat Nov 04, 2006 9:39 am
Location: Norway Trondheim area
Reputation: 0

Previous

Return to Hybrid Cannon Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], Yahoo [Bot]

Reputation System ©'