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 43 users online :: 4 registered, 0 hidden and 39 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

ongoing progress update pictures (small video added)

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

Unread postAuthor: BigGrib » Fri Mar 14, 2008 3:22 pm

Well for that big of a hole/indent into a 2x4 with a marble is pretty freaking good. I can't wait to see what a lead ball does. very good job, I have been following this gun since it's inception. keep up the posting/updating and I love all the picture cause my imagination sucks.
  • 0

Yea, that's definitely going to get you at least a tazer.

<a href="http://www.youtube.com/watch?v=AkMkGOpAF4s">DONT TAZE ME BRO.. DONT TAZE ME... AHHHH</a>
facebook.com/biggrib
User avatar
BigGrib
Colonel
Colonel
 
Posts: 652
Joined: Mon Oct 01, 2007 11:43 pm
Location: TriCities, WA
Reputation: 0

trigger progress

Unread postAuthor: lockmanslammin » Sat Mar 15, 2008 12:47 am

Alright, I got some time at work tonight to use some of the equipment I needed to get the trigger and sear assembly started and got quite a bit done. The trigger itself is made out of 1/4" aluminum, the connecting rod is made out of music wire (real hard steal) and the sear is some 1/8" stainless bar stock welded together and shaped with an angle grinder. All of the pins you see will be drilled and fitted with clips for easy diss-assembly. I'm pretty sure I have it figured out how I will attach it to the cannon, but I will wait until I have it done to take a pic and explain it. There will be a little bit more machining to make the piece that will be the other side of the sear and be threaded and screwed to the ball valve handle. I plan on having the holes slotted for adjustability and precision alignment so it works with the sear perfectly. This baby will have a hair trigger, I was just thinking tonight I need to add some sort of a safety lever to the assembly some where. Anyhow, here is a couple pics of it so far. When it is all assembled there will be a frame piece on both sides, I put them both on the bottom for the pics, so it would be easier to see.

Image

Image

By the way, thanx jsr, biggrip and everyone else, I do appreciate the replies and opinions, this forum, and the people in it,are a large part of what makes this project fun.

Lock
  • 0

Last edited by lockmanslammin on Sun Oct 05, 2014 10:38 am, edited 1 time in total.
User avatar
lockmanslammin
Master Sergeant
Master Sergeant
 
Posts: 152
Joined: Sun Feb 10, 2008 3:22 pm
Location: Sioux Falls, South Dakota
Reputation: 0

best damage pics and highest PSI yet

Unread postAuthor: lockmanslammin » Thu Mar 27, 2008 11:39 pm

For the first time I used some new muzzle loader sabots and a 50 cal. lead round ball. AAAnndd for the first time i pushed it up to 350PSI. I thought my pump was maxing at 302PSI or so, but as it turns out the gauge was just sticking a little or something....a few more pumps and up it kept climbing until I voluntarily stopped at 350PSI. Any how I set a piece of 3/4" MDF against a stud in my garage and then a piece of 1/2" OSB in front of that.

Loaded a slightly stretched out 50 Cal. sabot and 50 cal. lead round ball with a piece of light weatherstripping on top to hold in the bullet.
First pic: entry hole in the 1/2" OSB.....

Image

Next pic: exit hole in 1/2" OSB

Image

next pic: entrance hole in 3/4" MDF

Image

Next two pics: exit hole in 3/4" MDF from two angles, one with the smashed 50 cal. ball for size comparison.

Image

Image

Last pic: The 2X4 stud finally stopped it, but still got about a 1/2" dent in it.

Image

Man, that was the coolest shot yet by far. I am starting to think that I shouldn't shoot it in the garage any more though. Since this time my fiance could here it loud and clear in the living room on the other side of the house while watching TV, and mind you we don't have an attached garage. It would suck to have a cop knocking on my door asking what was going on because one of my neibors thought I was shooting a real gun or something.

Anyhow, I hope to be getting the trigger assembly attached soon so I can update again with actuall cannon construction updates.
as ussual any comments or questions are welcome.
Lock
  • 0

Last edited by lockmanslammin on Sun Oct 05, 2014 10:50 am, edited 1 time in total.
User avatar
lockmanslammin
Master Sergeant
Master Sergeant
 
Posts: 152
Joined: Sun Feb 10, 2008 3:22 pm
Location: Sioux Falls, South Dakota
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Fri Mar 28, 2008 12:03 am

looking good :) if you're worried about noise there are plenty of suppressor options you can build to mitigate the muzzle blast, though of course projectile impact will still be just as audible.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Gippeto » Fri Mar 28, 2008 12:45 am

Good work! When you get the pressure up, the damage gets really impressive...even a little bit worrisome! :shock:

You have to try steel plate, at 350psi you should be splattering your round ball. I know you will if you get it to 400psi. :wink:
  • 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: lockmanslammin » Fri Mar 28, 2008 1:44 am

I think if I shot at a steel plate the round ball would be in little bits all over the garage, (like the wood is currently..hehehe). I think the wood acts as a cushion to the lead slowing it down slowly enough that it remains in one piece. But this is the only shot like this I have taken yet. The last was a 54 cal lead ball at a piddly 120PSI. Now that I know the pump isn't maxing out I will try my previous plan to pump it too 500 psi a few times, and actuating the trigger with a broom from around the corner or something for safety testing, and then sticking to 400PSI for my shots.
I wonder what would happen to it if I had a failure at 4 or 500PSI. After seeing what the bullet does and what it sounds like when it fires it kinda freaks me out a bit actually. I tried to build it as solid as possible. I did a couple xtra things, such as not grinding the pipe stops out of the tee for the piston valve. That always sounded strange to me, like you would be destroying the integrity of the fitting.
I can't wait to see some damage from that insane beast you are building Gippeto. 3,000PSI! WOOOHOOO

thanx for the replies guys.
Lock
  • 0

User avatar
lockmanslammin
Master Sergeant
Master Sergeant
 
Posts: 152
Joined: Sun Feb 10, 2008 3:22 pm
Location: Sioux Falls, South Dakota
Reputation: 0

some pics of the finished trigger and sear assembly

Unread postAuthor: lockmanslammin » Sun Apr 27, 2008 6:21 pm

A few pics of the trigger and sear assembly for my spring actuated ball valve pilot.

Image

This assembly is totally servicable, although I hope it never needs it. I had to build jigs and spacers and all sorts of crap to get it in place accurately. you can see the 3 epoxy attachment points. The epoxy is stuck to the copper pipe, but not to the plexy trigger body. I used a counter sink to make key holes in the inside of the plexy and the puddy epoxy forms the male part of the key. The two screws/ wing nuts hold the whole thing together. It has about a 3 pound trigger pull I'm guessing. The ball valve opens pretty quick, but not too fast to break itself. It is now much easier to aim and hold steady while shooting all I need to add are sights. And then a quick clean up of the solder joints and I believe it is done.
Here are some more pics showing different aspects of the design.

Image

Image

Image

Image

Image

If any body has any comments of questions, I would be happy to answer them.

Lock
  • 0

Last edited by lockmanslammin on Sun Oct 05, 2014 11:13 am, edited 1 time in total.
User avatar
lockmanslammin
Master Sergeant
Master Sergeant
 
Posts: 152
Joined: Sun Feb 10, 2008 3:22 pm
Location: Sioux Falls, South Dakota
Reputation: 0

some pics of the finished trigger and sear assembly

Sponsored

Sponsor
 


Unread postAuthor: THUNDERLORD » Sun Apr 27, 2008 6:45 pm

Great stuff!!! I was looking at your photos of build/ sear especially and thinking that your username should be kalishnikov or something. Thanks :wink: 8)
  • 0


THUNDERLORD
Major General
Major General
 
Posts: 1264
Joined: Fri Mar 28, 2008 1:42 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sun Apr 27, 2008 9:47 pm

slick, would be great to see a video of it in action :)
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Gippeto » Sun Apr 27, 2008 11:00 pm

That's some nice work Lock.

Two thumbs up! :D
  • 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: bigbob12345 » Sun Apr 27, 2008 11:06 pm

Wow very impressive work
seems to have good power too it
  • 0

User avatar
bigbob12345
Major General
Major General
 
Posts: 1516
Joined: Sat Dec 01, 2007 9:13 am
Location: Mercer Island,Washington
Reputation: 0

Unread postAuthor: lockmanslammin » Mon Apr 28, 2008 11:33 am

Thanx for all the nice comments fellas. Getting that assembly on the cannon, squarely, was the hardest part of this build.

JSR: I was thinking of trying a video. I have never posted a video online, and I don't have a digital video camera other than the video clip function on my fuji digital camera, and my web cam. Still I may try to post one.

It works real slick. My only concern is that I never added a bumper of any sorts, because frankly I just wasn't thinking about it, but I sure could make it open faster if I had one. Although it does open faster than by hand, so it is still an upgrade. Plus its not like the ball valve is my primary valve anyhow.

Lock
  • 0

User avatar
lockmanslammin
Master Sergeant
Master Sergeant
 
Posts: 152
Joined: Sun Feb 10, 2008 3:22 pm
Location: Sioux Falls, South Dakota
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Wed Apr 30, 2008 6:16 am

lockmanslammin wrote:JSR: I was thinking of trying a video. I have never posted a video online, and I don't have a digital video camera other than the video clip function on my fuji digital camera, and my web cam. Still I may try to post one.


That's exactly how I make my videos ;) all you need then is a youtube account to host them, if you can make a launcher this intricate work that should be child's play ;)
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

crappy video

Unread postAuthor: lockmanslammin » Sat May 03, 2008 4:43 pm

I realise this is a crappy video, but here you go.
For some reason the camera's mic didn't pic up the loud bang this thing puts out at 350 psi. That shot went through like 4 layers of 1/4" OSB (oriented strand board). The projectile was a glass .5" marble in a greased t-shirt patch, sold as a slingshot ammo. The cannon actually has a little kick even with that light of an ammo.
This is the first time I have ever tried posting a video, so I hope it works.

Lock

Image

VIDEO LINK^^^^ VIDEO LINK^^^^ VIDEO LINK^^^^
  • 0

Last edited by lockmanslammin on Sun Oct 05, 2014 1:47 pm, edited 2 times in total.
User avatar
lockmanslammin
Master Sergeant
Master Sergeant
 
Posts: 152
Joined: Sun Feb 10, 2008 3:22 pm
Location: Sioux Falls, South Dakota
Reputation: 0

Unread postAuthor: SpudFarm » Sat May 03, 2008 4:57 pm

NICE i love it!
that is some extreme damage with a marble on that two by four! i cant do that with my pneumatic.. my hybrid had trouble with that at 4x..

once more NICE a$$ gun!
  • 0

"Made in France"
- A spud gun insurance.
User avatar
SpudFarm
Donating Member
Donating Member
 
Posts: 2563
Joined: Sat Nov 04, 2006 9:39 am
Location: Norway Trondheim area
Reputation: 0

PreviousNext

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'