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 78 users online :: 4 registered, 0 hidden and 74 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Cobra Striker

Built a hybrid cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
Sponsored 

The Cobra Striker is:

The sickest damn piston hybrid EVER!
38
88%
A decent piston hybrid
3
7%
Just another hybrid
0
No votes
Not at all impressive or special
0
No votes
Take your Striker and shove it! It sucks!
2
5%
 
Total votes : 43
  • Author
    Message

Unread postAuthor: Moonbogg » Tue Sep 22, 2009 7:31 pm

Thats it, I am making a video showing a quick demo on how to polish aluminum without power tools.
  • 0

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: Moonbogg » Fri Oct 02, 2009 7:32 pm

Poll added! DO your worst!
  • 0

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: Ragnarok » Fri Oct 02, 2009 7:42 pm

I can only really put my vote in the first category. While I'm not in the habit of labelling something as "sick", I've not seen a better executed piston hybrid.
  • 0

Does that thing kinda look like a big cat to you?
User avatar
Ragnarok
Chief of Staff
Chief of Staff
 
Posts: 5339
Joined: Tue Dec 19, 2006 8:23 am
Location: The UK
Reputation: 8

Unread postAuthor: Brian the brain » Sat Oct 03, 2009 6:41 am

Indeed.Those that voted it sucks clearly don't understand it does quite the opposite.

It blows...very hard..very fast
:D

This has driven me to polish my repeater... :D
  • 0

Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
User avatar
Brian the brain
Moderator
Moderator
 
Posts: 3494
Joined: Mon Dec 05, 2005 2:06 am
Location: Holland
Country: Netherlands (nl)
Reputation: 29

Unread postAuthor: inonickname » Sat Oct 03, 2009 6:52 am

May I ask what's the point in the piston? Surely it restricts flow or makes turbulence and it's not holding back a pressurized mix.

Though it is very nice.
  • 0

PimpAssasinG wrote:no im strong but you are a fat gay mother sucker that gets raped by black man for fun
User avatar
inonickname
Lieutenant General
Lieutenant General
 
Posts: 2606
Joined: Sun Dec 07, 2008 3:27 am
Reputation: 0

Unread postAuthor: Moonbogg » Sat Oct 03, 2009 7:11 am

inonickname wrote:May I ask what's the point in the piston? Surely it restricts flow or makes turbulence and it's not holding back a pressurized mix.

Though it is very nice.


What are you talking about? The piston holds the mix in. It bursts open at about 40psi and then is closed with no effort.
  • 0

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: Willdebeers » Sat Oct 03, 2009 7:17 am

Moonbogg wrote:
inonickname wrote:May I ask what's the point in the piston? Surely it restricts flow or makes turbulence and it's not holding back a pressurized mix.

Though it is very nice.


What are you talking about? The piston holds the mix in. It bursts open at about 40psi and then is closed with no effort.



How does it acheive this?
  • 0

Image
User avatar
Willdebeers
2nd Lieutenant
2nd Lieutenant
 
Posts: 214
Joined: Tue Feb 03, 2009 1:18 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: Moonbogg » Sat Oct 03, 2009 7:22 am

Willdebeers wrote:
Moonbogg wrote:
inonickname wrote:May I ask what's the point in the piston? Surely it restricts flow or makes turbulence and it's not holding back a pressurized mix.

Though it is very nice.


What are you talking about? The piston holds the mix in. It bursts open at about 40psi and then is closed with no effort.



How does it acheive this?


Spring plungers. Nylon ball spring plungers hold the piston back until it blows forward. The nylon balls are aligned between the ventillation holes so they don't try to open, and they glide smoothly along the aluminum piston making it effortless to push the piston back in.
  • 0

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: Willdebeers » Sat Oct 03, 2009 7:24 am

Im still clueless. Can you use an infinate X mix in a piston hybrid?
  • 0

Image
User avatar
Willdebeers
2nd Lieutenant
2nd Lieutenant
 
Posts: 214
Joined: Tue Feb 03, 2009 1:18 pm
Reputation: 0

Unread postAuthor: Moonbogg » Sat Oct 03, 2009 7:36 am

Willdebeers wrote:Im still clueless. Can you use an infinate X mix in a piston hybrid?


No. This cannon will only allow so much pre ignition pressure, about 40psi. All cannons have their structural limits as well. If you add too much fuel, eventually you'll add enough to either bend the cannon out of shape or simply blow it up. You have to design for the ammount of X's you want to use.
  • 0

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: inonickname » Sat Oct 03, 2009 8:09 am

Oxygen and propane wouldn't go anywhere in a hurry unless you began waving the gun around with the breech open.

Have you tried the piston for pressurized mixes rather than oxy-fuel? How does it perform in comparison?
  • 0

PimpAssasinG wrote:no im strong but you are a fat gay mother sucker that gets raped by black man for fun
User avatar
inonickname
Lieutenant General
Lieutenant General
 
Posts: 2606
Joined: Sun Dec 07, 2008 3:27 am
Reputation: 0

Unread postAuthor: Moonbogg » Sat Oct 03, 2009 9:26 pm

inonickname wrote:Oxygen and propane wouldn't go anywhere in a hurry unless you began waving the gun around with the breech open.

Have you tried the piston for pressurized mixes rather than oxy-fuel? How does it perform in comparison?


The mix is pressurized, always, even when using purging. The fueling is not a displasive method. I have taken shots with pressurized O2 and the results are a hell of a lot better. I think the chamber never gets truly purged cleanly. All it does is waste a ton of O2 while leaving exhaust in the chamber. So I will use pressurized fueling, as the design was originally intended for. I removed the O2 gage for the video and tried purging because I figured it would be a more simple way to fuel, but it ends up being all guesswork as to when the chamber is purged and its wasteful as O2 is sent right out of the chamber in the form of dollar signs.
  • 0

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: inonickname » Sat Oct 03, 2009 9:58 pm

Fair enough- I assumed you were using an atmospheric mixture.

What measures did you take to ensure the valve would not impede flow much?
  • 0

PimpAssasinG wrote:no im strong but you are a fat gay mother sucker that gets raped by black man for fun
User avatar
inonickname
Lieutenant General
Lieutenant General
 
Posts: 2606
Joined: Sun Dec 07, 2008 3:27 am
Reputation: 0

Unread postAuthor: Moonbogg » Sat Oct 03, 2009 10:05 pm

inonickname wrote:Fair enough- I assumed you were using an atmospheric mixture.

What measures did you take to ensure the valve would not impede flow much?


Used HGDT for a 1" opening and then increased the cumulative surface area of the ventillation holes well beyond 1" to compensate for friction and other losses.
  • 0

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: kjjohn » Thu Nov 19, 2009 8:27 pm

Sorry if this is considered kicking up an old topic, but I hae a question about this cannon. You said the MAPP has pushbutton injection. How does this work? A spool valve? And what meters the correct amount of oxygen into the chamber?
  • 0

User avatar
kjjohn
1st Lieutenant
1st Lieutenant
 
Posts: 270
Joined: Sat Jul 11, 2009 3:54 pm
Reputation: 0

PreviousNext

Return to Hybrid Cannon Database

Who is online

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

Reputation System ©'