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 54 users online :: 5 registered, 0 hidden and 49 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

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

The Team
Administrators
Global Moderators
global_moderators.png CS

hammer valve concept idea

A place to ask general spud cannon related questions.
Sponsored 
  • Author
    Message

hammer valve concept idea

Unread postAuthor: streetfire » Sat Oct 08, 2011 9:23 am

hello to all

i have always wondered if a hammer valve could be used too power a bigger cannon i wanted to build something wit a back barrel breech to load directly in too the barrel like a howitzer

so here is the concept no idea if it will ever be build but hey
it doesn't have a trigger yet so its just the basic gun
Image
  • 0

User avatar
streetfire
Sergeant
Sergeant
 
Posts: 94
Joined: Wed May 18, 2011 10:00 am
Location: the netherlands
Reputation: 0

Unread postAuthor: warhead052 » Sat Oct 08, 2011 9:35 am

Yeah, that looks like it would work. Would it be a muzzle loader, or would you find a spot for a mag?
  • 0


warhead052
Major General
Major General
 
Posts: 1769
Joined: Mon Mar 21, 2011 5:41 pm
Reputation: 0

Unread postAuthor: streetfire » Sat Oct 08, 2011 9:46 am

warhead052 wrote:Yeah, that looks like it would work. Would it be a muzzle loader, or would you find a spot for a mag?

its actually a breech loader the back bolt can come out and allow a new round to be loaded like this

Image
  • 0

User avatar
streetfire
Sergeant
Sergeant
 
Posts: 94
Joined: Wed May 18, 2011 10:00 am
Location: the netherlands
Reputation: 0

Unread postAuthor: Gippeto » Sat Oct 08, 2011 9:59 am

warhead052 wrote:Would it be a muzzle loader?


to build something wit a back barrel breech to load directly in too the barrel like a howitzer


Otherwise, how big of a canon and how much pressure?

Smallish point...bearing area on the valve stem as drawn is pretty small...more bearing area (length) will reduce the requirement for precision fitted pieces, and help with controlling leakage during the firing cycle. Also aids valve stem alignment when the stem is re-seating.

Transfer porting as drawn will detract from performance...it's not just a "flow area"...it's dead space.

Edit: Ah hell...this always happens to me. :roll: Ninja'd is the appropriate term these days? :lol:
  • 0

"It could be that the purpose of your life is to serve as a warning to others" – unknown

Liberalism is a mental disorder, reality is it's cure.
User avatar
Gippeto
Donating Member
Donating Member
 
Posts: 2393
Joined: Sat Jan 19, 2008 10:14 am
Location: The Great White North...Canada eh!
Reputation: 11

Unread postAuthor: Brian the brain » Sat Oct 08, 2011 1:59 pm

If you want to be able to use this for a large cannon, the valve will be to big to push open.

But yes,

a hammervalve can be scaled up.
It's what I have been doing.
Just have an opposing piston on the valvestem to equalise the force excerted on it.

The counterbalanced hammervalve...it works in any scale.
  • 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: warhead052 » Sat Oct 08, 2011 3:53 pm

Looks like this is what I will do to make my friend the howitzer he wanted... Except you get to hit the valve with an actual hammer, something along these lines. Image
  • 0


warhead052
Major General
Major General
 
Posts: 1769
Joined: Mon Mar 21, 2011 5:41 pm
Reputation: 0

Return to General Spud Cannon Related

Who is online

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

cron
Reputation System ©'