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breech loader

Posted: Sun Jul 12, 2009 8:36 pm
by kjjohn
I need some help with a breach loader. Put quite simply: How do you make one? I would search Google, but I think I will get a more complete answer from everyone here.

I obviously know what it looks like and how it works, just what is it about these o-rings? Where do they attach?

Posted: Sun Jul 12, 2009 8:43 pm
by DinerKid
http://www.spudfiles.com/forums/viewtop ... tml#251648

http://www.spudfiles.com/forums/really- ... 17658.html

both are going to be possibly the easiest way of making one the first is this style of breach on my newest cannon. the second link is a thread containing a video of how to make this.

it is so easy because all you have to do is drill a hole in the ball valve.
because most ball valves have a bore of the ball as being slightly smaller than the id of the pipe size for the ball valve you can use this with paint balls and other fragile projectiles just by putting a little bit of a funnel shape on the inside of the barrel for a smooth transition. it isn't necessary but it is a good idea i would say to guarantee a smooth transition especially with brittle projectiles.

Posted: Sun Jul 12, 2009 9:01 pm
by kjjohn
that's awesome. i would definitely use it, but the rounds I am shooting are not "round". They are bullet-shaped. This design wouldn't work for the bullet, unless there is some other kind of weird valve that can load it. Brilliant idea though.

Posted: Sun Jul 12, 2009 9:22 pm
by DinerKid
well it actually may work for a bullet. it depends on the length of the bullet so if it were to be a really long bullet it may not fit in the ball valve but if it were a shorter bullet then it may fit in the valve. i know i can fit 2 paint balls in my 3/4" valve so that is roughly a 1.4" tall cylinder in the ball valve. i would try it out in the store just to see if it is a possibility because this breech style has no leakage because it is a valve and you don't ave to worry about making a seal yourself!

Posted: Sun Jul 12, 2009 9:51 pm
by kjjohn
thanks, i may try this if i can get a tight enough fit between the bullet and the barrel.

Posted: Sun Jul 12, 2009 10:16 pm
by Technician1002
Another style that works well uses a slip repair coupling that slides over the barrel. Here is a video of one in action launching t shirts.

Posted: Sun Jul 12, 2009 10:49 pm
by inonickname
Erm, you claim to be making an ETG, and yet you can't come upwith a simple breech load. Searching will yield plenty of results.

Try Hubb's barrel guide, it has a large section on loading.

Posted: Sun Jul 12, 2009 11:05 pm
by kjjohn
Erm, you claim to be making an ETG, and yet you can't come up with a simple breech load.
I am working on a few projects at once. And remember, I said possibly making an ETG, I was just checking up on the facts before I throw together a gun and end up just making smoke with it.

As for not being able to come up with a breech load, I am better with electronics than I am with general stuff like that. I know how most designs work, I just want to make sure I do it right so I dont get pressure leak. Also, everything else I have ever made before has been muzzle loading.

Posted: Wed Jul 15, 2009 3:22 pm
by kjjohn
inonickname wrote: Try Hubb's barrel guide, it has a large section on loading.
Do you know where I can find Hubb's barrel guide? I went through several pages of search results on spudfiles, but couldn't find it. I also did a Google search, no results their either.

Posted: Wed Jul 15, 2009 3:25 pm
by Hubb
In my sig.....

Posted: Wed Jul 15, 2009 4:50 pm
by kjjohn
thanks, helped alot