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 53 users online :: 5 registered, 0 hidden and 48 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

Semi Auto breech CAD

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
Sponsored 
  • Author
    Message

Semi Auto breech CAD

Unread postAuthor: CooperJS » Fri Aug 24, 2012 9:32 am

Hey guys, Im working on a semi auto air rifle but having trouble drawing a blow forward breech design, but i have noticed that a phew people on here are very good at drawing designs and using cad. so my question is (drum roll...) Would it be possible if some one can draw me a design using cad or something else that has measurements so i can use for the build?
I have a Lathe (south bend model 9a made in 1942) a drill press, taps and dies, grinder, dremel and some other various tools.
I'm using this for BBs 6mm
hope im not being rude just asking for something but i need some help!

Cooper
  • 0


CooperJS
Sergeant
Sergeant
 
Posts: 81
Joined: Sun Sep 18, 2011 4:20 am
Reputation: 0

Unread postAuthor: Gippeto » Fri Aug 24, 2012 9:55 am

You're asking for plans...which are practically non existent here.

Try google images for "blow forward bolt", get a pencil and some paper.

A fella with a lathe should know how to do a quick "napkin sketch" and make a part from that. :)

Edited for shpellungk
  • 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: Lockednloaded » Fri Aug 24, 2012 9:59 am

You're probably thinking that you'll need some specific dimensions to get your blow-forward bolt to work, but if you under stand the concept you'll see it's very flexible. You should probably just eye-ball some designs around the forum to get an idea of how these things function, then you'll surely be able to draw something up. You won't need CAD either, a simple paint diagram should be sufficient
  • 0

I love lamp
User avatar
Lockednloaded
Major General
Major General
 
Posts: 1558
Joined: Thu Sep 03, 2009 9:38 pm
Location: Texas, USA
Reputation: 0

Unread postAuthor: iknowmy3tables » Fri Aug 24, 2012 10:05 am

I always saw a blowforward bolt design as being limited to what pipes plugs and sleeves you have, I you should be fine with a pencil sketch
  • 0


iknowmy3tables
Major General
Major General
 
Posts: 1558
Joined: Fri Dec 15, 2006 3:57 pm
Location: maryland
Country: United States (us)
Reputation: 0

Unread postAuthor: CooperJS » Fri Aug 24, 2012 10:12 am

ok, well the last one i built didn't work to well, sometimes it would shoot 2 bbs at the one time or i didn't shoot right but hopefully i can whip up another plan.

Cooper
  • 0


CooperJS
Sergeant
Sergeant
 
Posts: 81
Joined: Sun Sep 18, 2011 4:20 am
Reputation: 0

Unread postAuthor: CooperJS » Fri Aug 24, 2012 10:38 am

Would there happen to be any links to a couple of pages with blow forward diagrams?

Cooper
  • 0


CooperJS
Sergeant
Sergeant
 
Posts: 81
Joined: Sun Sep 18, 2011 4:20 am
Reputation: 0

Unread postAuthor: dewey-1 » Fri Aug 24, 2012 10:49 am

Why did you not take Gippeto's suggestion for Google?
All kinds of spudfiles images.
  • 0

User avatar
dewey-1
Major General
Major General
 
Posts: 1298
Joined: Wed Mar 28, 2007 10:24 am
Location: NE Wisconsin USA
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: CooperJS » Fri Aug 24, 2012 10:55 am

Yea I realised that after what I just posted haha
  • 0


CooperJS
Sergeant
Sergeant
 
Posts: 81
Joined: Sun Sep 18, 2011 4:20 am
Reputation: 0

Unread postAuthor: POLAND_SPUD » Fri Aug 24, 2012 7:05 pm

ohh just use an air cylinder + QEV + 3 way combo
  • 0

Children are the future

unless we stop them now
User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Unread postAuthor: Zeus » Fri Aug 24, 2012 8:47 pm

But PS, that's the obvious solution. I'm not using it though.
  • 0

/sarcasm, /hyperbole
User avatar
Zeus
Major General
Major General
 
Posts: 1422
Joined: Tue Oct 27, 2009 7:34 pm
Location: 'Straya, C*nt
Reputation: 2

Unread postAuthor: CooperJS » Sat Aug 25, 2012 4:14 am

thinking of going with this type of design.

http://www.spudfiles.com/forums/files/b ... ni_137.gif
  • 0


CooperJS
Sergeant
Sergeant
 
Posts: 81
Joined: Sun Sep 18, 2011 4:20 am
Reputation: 0

Unread postAuthor: POLAND_SPUD » Sat Aug 25, 2012 5:13 am

But PS, that's the obvious solution. I'm not using it though.
lol let me rephrase that - I would make the wheels round but that's the obvious solution - I want them to be square
  • 0

Children are the future

unless we stop them now
User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Unread postAuthor: Zeus » Sat Aug 25, 2012 6:11 am

No, it's "I'd make the wheels nonagonal for a somewhat smoother ride, but for the circumstances a square wheel will suffice, and greatly decrease costs and labor."

And remember, I might end up making 10 of these a week, I don't want to be machining a feeding block that often.
  • 0

/sarcasm, /hyperbole
User avatar
Zeus
Major General
Major General
 
Posts: 1422
Joined: Tue Oct 27, 2009 7:34 pm
Location: 'Straya, C*nt
Reputation: 2

Unread postAuthor: PotatoEnemy17 » Sat Aug 25, 2012 4:54 pm

You guy's don't get it, A potato cannon rarely has use for square wheels. :D
Either way I thought the wheels on the bus go round and round... not square and square :lol:
  • 0


PotatoEnemy17
Staff Sergeant
Staff Sergeant
 
Posts: 100
Joined: Tue Apr 10, 2012 6:33 pm
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'