| Author |
Message
|
| iknowmy3tables |
 Posted: 03/21/2007 20:15 PM Post subject: semi blowgun!!! |
 |
|
Brigadier General
Joined: 15 Dec 2006
Posts: 1126
2659.19 Spud Bux
|
Well I know I'm not the only person who is working on or considering making a semi auto or auto refilling gun so this should be helpful to a lot of people. and we know about sleeve valves http://www.spudfiles.com/forums/viewtopic.php?t=160& but I think I found a way to do this with a blowgun.
after being frustrated with the mess of my valve on the third try due to my crappy craftsmanship I got annoyed knowing that my new gun just wouldn't cut it without some sleeve valve style triggering. and started to take apart one of my blowguns and realized that the piston was a lot like the piston thing in my attempted inside-out slide valve
(the design should be fine I'm just a crappy craftsman) so I thought of a way to make my blowgun exhaust air when squeezed it. and within minutes I made this
I raised the handle so you can sorta see how I changed the button on this
piston device in blowgun
a view of the piston, sorry that my pics suck Its hard to get a clear view of the tiny mechanisms
I haven't tested this on a valve cause I don't have the proper fittings but I did do some testing with a quick connect the only problem is that the piston wants to pop all the way up into a closed position when handle is released I can easily fix that with some kind of mechanical device that restricts the lever from raising too high, and on the bright side it has potential for a safety
Sorry if you are still unclear on this I'll try to add some more descriptions and diagrams later
|
|
| Back to top |
|
 |
|
|
|
| FeLeX |
| Posted: 03/21/2007 20:21 PM Post subject: |
|
|
Captain
Joined: 10 Mar 2007
Posts: 304
251.78 Spud Bux
|
| So how does this work? You got a main chamber then you shoot and after that the main chamber fills up the seconday? or...?
|
|
| Back to top |
|
|
| iknowmy3tables |
| Posted: 03/21/2007 20:40 PM Post subject: |
|
|
Brigadier General
Joined: 15 Dec 2006
Posts: 1126
2659.19 Spud Bux
|
| I'm a little busy right now but quickly I'll try to answer: you may have seen Clyde's slider gun http://www.spudfiles.com/forums/viewtopic.php?t=160& this thread is a good reference for semi autos. The mod I did is for a basic blowgun to replicate the task of a sleeve valve this could be a ground breaking thing. pretty much when the valve is serving this purpose the air source such as a compressor would connect to the input side, the output would connect to the valve actuator porting and that is exhausted when firing comes out from around the button of the blowgun which by the way I grinded down to flow better
|
|
| Back to top |
|
|
| FeLeX |
| Posted: 03/21/2007 20:48 PM Post subject: |
|
|
Captain
Joined: 10 Mar 2007
Posts: 304
251.78 Spud Bux
|
Ohhhhh I get it now!! Its a really good idea but It seems like it would be a paint in the butt to acomplish. Probably the main reason this isnt aprealing to is because I dont have a compressor.
Are you sure its going to able ti hande the pressure after it is modified? If it would to leak would that screw it all up?
|
|
| Back to top |
|
|
| A-98 |
| Posted: 03/21/2007 21:04 PM Post subject: |
|
|
Pussy Lover
Joined: 27 Apr 2006
Posts: 907
135.08 Spud Bux
|
| FeLeX wrote: | | It seems like it would be a paint in the butt to acomplish. |
lol, that sounds pretty uncomfortable.
nice idea, im not 100% on it, but i understand it well enough.
|
|
| Back to top |
|
|
| clide |
| Posted: 03/22/2007 0:24 AM Post subject: |
|
|
Donating Member
Joined: 06 Mar 2005
Posts: 695
2004.48 Spud Bux
|
Nice work. So when the blowgun trigger is all the way depressed it vents the outlet side to atmosphere and seals off the inlet?
I've also experimented with turning a blowgun into a 3-way. I made it so that the outlet side vented to atmosphere when the blowgun was in the normal position. So you would pull the blowgun trigger to charge the gun and releasing the trigger would fire, but I couldn't get very good flow out of the vent. I kept meaning to try different kinds of blowguns, but never got around to it. I'll try to get some pictures of mine if I can remember.
|
|
| Back to top |
|
|
| iknowmy3tables |
| Posted: 03/22/2007 16:29 PM Post subject: |
|
|
Brigadier General
Joined: 15 Dec 2006
Posts: 1126
2659.19 Spud Bux
|
Actually it vents around the button when I squeeze
I don't know what you did clide but your a really good machinist and you could probably alter that blowgun however you wanted
today I found a way to use the fittings I have so I tested this on a sprinkler valve and it works. its pretty fast like faster than the manual bleed switch and probably the solinoid and almost as fast as a normal blowgun but you have to pull the trigger quickly
meanwhile before I get pics here's a diagram of a normal blowgun vs may modded semi blowgun
Heres what a normal blowgun looks like when in the natural position
heres what a mod semi blowgun looks like in the natural position
as you can see I extended the top of the piston by dilling a tiny hole and placing a small panel nail in it, second I gridded down the edges of the piston near the top so it could vent better it was pretty easy since this is made from soft metal, finally I cut the spring with pliers so it's shorter and works in this new position
|
|
| Back to top |
|
|
| imablackskater |
| Posted: 03/22/2007 16:36 PM Post subject: |
|
|
Sergeant First Class
Joined: 13 Jan 2007
Posts: 143
172.92 Spud Bux
|
| that looks like it took a lot out of your porn time but you should still feel great you acomplished something highly useful and innovative.
|
|
| Back to top |
|
|
| iknowmy3tables |
| Posted: 03/23/2007 14:31 PM Post subject: |
|
|
Brigadier General
Joined: 15 Dec 2006
Posts: 1126
2659.19 Spud Bux
|
very funny
I was actually studying for the test I today, I think I failed it  but at least Its Friday so I can get the pics of the valve and chamber that is once I find the camera you'll probably like the chamber/stock its not that big but its enough for a repeater. It's made from 1"pvc and has a unique shape to make it realistic and comfortable
|
|
| Back to top |
|
|
| clide |
| Posted: 03/23/2007 15:17 PM Post subject: |
|
|
Donating Member
Joined: 06 Mar 2005
Posts: 695
2004.48 Spud Bux
|
My goal in modding the blowgun was to have a simple 3-way valve that anybody could make, so no fancy tools were used, just a drill and a dremel. The blowgun I first modded had the upper seal in the blowgun body and it sealed around the plunger, so I ground the plunger so that the small area extended just beyond the seal and ground out the body on one side to allow flow out.
On a blowgun like this one it would be even easier and give better flow, you could just drill out that top brass piece to right below where the o-ring seals in it's closed state.
Here are a few diagrams that hopefully help. It would be hooked up to the gun the same as yours, but operation would be the opposite, push to fill and release to fire. So your method provides a more intuitive trigger.
| Description: |
|
| Filesize: |
5.55 KB |
| Viewed: |
693 Time(s) |
|
| Description: |
|
| Filesize: |
5.59 KB |
| Viewed: |
693 Time(s) |
|
|
|
| Back to top |
|
|
| iknowmy3tables |
| Posted: 03/29/2007 15:08 PM Post subject: |
|
|
Brigadier General
Joined: 15 Dec 2006
Posts: 1126
2659.19 Spud Bux
|
Sorry I took so friggen long I lost the camera. but I done with the gun
the blow gun is encased in the wooden handle (to be attached later) do you think it is a bad idea to have the duct tape on the stock. its not all duct tape but the tape there is used to make it look less like a skeleton frame and has slots for holding ammo like a speed loader on a shotgun
but I want to know what you think since I want to earn favor the of voters in the contest
|
|
| Back to top |
|
|
|
|
