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 67 users online :: 2 registered, 0 hidden and 65 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Piston Design (ghetto sketch)

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

Piston Design (ghetto sketch)

Unread postAuthor: Moonbogg » Tue Oct 19, 2010 12:32 am

OK, heres my idea for an inline piston hybrid. It uses pressure differential like a standard piston. The piston housing bolts to the end plate and the housing has ventilation holes, allowing combustion pressure to push the piston back, overcoming the pilot pressure caused from compressed air. Pretty friggin simple and consists of 3 parts. I like the idea because i would get a standard piston (tried and true) in an inline configuration, eliminating the need for T fittings. What do you think?
The sketch is slightly rough, but you might get the idea.

EDIT: I plan on keeping the active surface area of the piston as tiny as possible, allowing good pressure build up but with minimal pilot pressure. That way, when it opens, the pressure acting on the full face of the piston will very easily open it and as fast as possible.
  • 0

Attachments
inline piston.jpg
inline piston.jpg (24.08 KiB) Viewed 572 times
User avatar
Moonbogg
Major General
Major General
 
Posts: 1375
Joined: Mon Oct 13, 2008 10:20 pm
Location: whittier, CA USA
Reputation: 0

Unread postAuthor: Technician1002 » Tue Oct 19, 2010 1:13 am

It looks like one of the sketches I'm playing with. Make sure the piston structure does not interfear with the flow out the barrel when open. I was toying with one with the piston in the center of a 20 LB propane tank. 3 3 inch barrel would extend into the tank from one end and the piston cylinder would extend in from the other end. This would make the piston servicable.
Due to the size of the tank, and composition, it would most likely need to be a low mix.
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Return to Hybrid Cannon Discussion

Who is online

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

Reputation System ©'