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M1A1 Bazooka

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: Imortal87 » Mon Sep 08, 2008 9:53 pm

Very nice. clean build and VERY realistic.

Have you seen the latest of davidvaini's creations?
its and greman Panzerschrek. it uses 1.25 burst shells.

http://www.spudfiles.com/forums/panzerschrek-2-new-videos-t15851.html
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Unread postAuthor: biged » Tue Sep 09, 2008 4:14 pm

possibly an m1 garand from you next?


Already built an airsoft version last year from a G&G M14.
http://i70.photobucket.com/albums/i110/ ... rand_2.jpg

I have seen David's schrek he did a great job!
I have received many an email from Falschimjager's wanting me to build one. I do have access to a real one from WW2. Maybe sometime next year.

///ed///
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Unread postAuthor: PinHead » Sat Sep 13, 2008 12:54 pm

That's a beautiful piece you got there, top notch work. Your welds look pretty nice too... I gotta comment on those, I weld for a living. I wish I could make a nice steel cannon like this but I'm just afraid it'd be topo darn heavy. How much does yours weigh?

The hop-up is interesting, it's alot like the flatline system that Tippmann uses. For awhile, there were a few companies that made something like this for a paintball gun, that they referred to as a "spin pad". It was adjustable for how much pressure it would put on the ball, but I think most companies gave up on it because they broke paintballs too easily.
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Unread postAuthor: biged » Sun Sep 14, 2008 7:47 am

It weighs 16 lbs. I could cut the weight by 9 lbs if I just used a thin wall steel for the chamber and eliminated the coax chamber inside that. It was unnecessary because the design only needs a 1/8th gap around the piston face. I have made other inlines with the same performance.

I have been hounded by people at airsoft events and reenactors to mass produce it. It is not a toy.

///ed///
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Unread postAuthor: YEAHADD16 » Mon Sep 15, 2008 2:10 pm

Awesome job, how did you make the hop up
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Unread postAuthor: biged » Tue Sep 16, 2008 5:16 am

I cut a 3 inch notch in the breech 1 inch wide. Then used a piece of 1/2" steel, 1/4" thick and folded a piece of 1/4" thick rubber around 3 sides of it. Pressed it into the notch and trimmed the edges. A hose clamp secures it to the breech cover. It protrudes down into the projectile-chamber about 3/8ths of an inch.

When the breech is closed it holds the tennis ball in an will not roll out. However I have come across tennis balls that are not 2.5 inches in diameter. A buddy of mine gave me a 60lbs bag of used tennis balls from a tennis club. That's when I noticed the diameter issues. I will lose about 20-40 feet of range on a small diameter ball.

///ed///
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Unread postAuthor: i-will » Sat Oct 04, 2008 3:05 am

this is awesome. it looks awesome and it works. everything i love in a launcher. i'm gonna make somethin similar to a M72 LAW. they"re small but it's the projectile that makes it awesome.

it's actually more about the size. i want it portable.

when it's done we can compare launchers.
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WHY PAY FOR IT WHEN U CAN MAKE IT?
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Unread postAuthor: biged » Sat Oct 04, 2008 12:36 pm

I too am in the works of building a set of "drop in" internals for a M72 LAW.
This is a set I put together months back but was too large. (Length and diameter)
It fits fine into a AT4, and launches nerfs at 290 psi.

Image

The new m72 internals have a retracting inner barrel, I should have it finished by the winter time.

///ed///
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Unread postAuthor: i-will » Mon Oct 06, 2008 1:25 pm

.........sweet............
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Unread postAuthor: Antonio » Tue Oct 07, 2008 11:43 am

Looks really professional! With the great welding on there I would think it would the real bazooka lol!
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Unread postAuthor: fogus » Thu Oct 30, 2008 1:32 pm

Hey, all your guns are amazing.

Again, I'm curious about barrel materials. What do you use? It seems to take welding very well.

This looks like the same paint as the others, is it?

Where do you go for such detailed plans? I would love to make a replica of some shoulder fired launchers.

How did you make the piston valve? What materials are best for making the piston? Are there plans somewhere to do this?

Cheers
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Unread postAuthor: biged » Sat Nov 01, 2008 8:42 am

I'm curious about barrel materials. What do you use? It seems to take welding very well.

2-3/4 inch tail pipe - Any auto parts store will have it. The OD is 2.75 the ID is 2.625.
This looks like the same paint as the others, is it?

Krylon Camo OD green.
Where do you go for such detailed plans? I would love to make a replica of some shoulder fired launchers.

A buddy of mine from CT bought a replica (non-functioning) in the early 90's when they were $200. You can still get them but they are now $500-$600.
Anyway, at a WW2 event I took multiple photos of it with a dollar bill next to it to get the scale correct. I did not have a tape measure on me, so I used a dollar bill & five dollar bill - which is 6-inches in length. There are some posted measurements on the WW2 reenactors board.
How did you make the piston valve?

1/4" threaded rod and fender washers.

This picture is the one from the 4.2 mortar, but the one in the bazooka is the same design.
Image

Are there plans somewhere to do this?

Not that I know of. I am the first person to make a tennis ball bazooka to scale.

///ed///
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Unread postAuthor: biged » Wed Feb 04, 2009 9:27 am

Gave some intel to a friend on the WW2 reenactors board and he copied my design. Here is his video of it firing.

http://s60.photobucket.com/albums/h35/t ... okaVid.flv

///ed///
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Unread postAuthor: cangying » Sun Dec 27, 2009 9:50 am

Image

Osama bin Laden
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Unread postAuthor: sp1ke » Fri Apr 02, 2010 4:12 pm

sweet jesus! this is the real deal

sorry for reviving a semi-dead thread, but what size and length pipe is your chamber and where did you buy it? also just to make sure is this basically a coaxial gun that doesnt have the barrel go inside of the pipe and the piston doesnt seal against the barrel
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