PDA

View Full Version : Airsoft RPG



miguel
04-14-2006, 01:28 PM
I don't know if anyone has made one of these yet but I found the instructions and it seemed so simple I couldn't resist. Airsoft retreat guide (http://www.airsoftretreat.com/forums/index.php?topic=264.0)
I have been shooting a foam ball I found in my garage and its getting ~60ft range. I am going to try and find the Nerf footballs because I believe this will make it shoot farther. The only problem is that the valve is very difficult to turn. I am trying to find a way to make the handle longer and give it more torque so that will be easier to turn. Any suggestions?

http://www.lonestarairsoft.com/forums/photopost/data/503/medium/shooting_RPG.JPG
http://www.lonestarairsoft.com/forums/photopost/data/500/medium/RPG.JPG
http://www.lonestarairsoft.com/forums/photopost/data/500/medium/RPG2.JPG

Before its done I am going to shorten the barrel and of course paint it. In the second picture you can see the blue ball I have been using and in the last picture is the scarder valve for pumping air into it.

Dirus
04-14-2006, 02:04 PM
That's pretty cool. As far as a longer valve knob, best bet would probably be to cut some wood or plexiglass to fit around the current handle, make sure it's a snug fit, and bolt/glue it on. How's the air leakage on that valve? Can it hold compressed air for very long?

Looking at the simple design popped a few ideas into my head about converting it to shoot .12g BBs en-mass. would prove tricky though. *goes back to daydreaming*

miguel
04-14-2006, 02:10 PM
There is no leakage at all but I have not kept pressure in it for very long. I typically get it up to 60 psi and its ready to shoot. I will have to experiment to find how well it holds pressure.

adammike
04-14-2006, 02:13 PM
He broke his pump though, so we can't mess with it for awhile.:doh:

Viper
04-15-2006, 12:19 AM
I don't know much about plumbing parts, but if you found a brass or metal valve you would probably get to a much higher PSI, but then you would have to worry about the pipe itself blowing up. Maybe Metal pipe might be a little heavy but......

Peyton
04-15-2006, 12:33 AM
Firing BBs en mas shouldn't be too hard. All you need is a to make a cup that fits flush with the inside of the tubing, and then a rim from around .1-.25" wide going around the end of the tubing. It'll catch the cup, releasing the bbs.

Dirus
04-15-2006, 01:57 AM
This is pretty much a spud cannon using compressed air. Proper PVC piping can support over 100PSI easily, but you would need sufficiently glued connections. Metal piping would increase weight a lot, and I don't think it would offer much bonus. I think the setup you have there is good for a cheap RPG. Just get a handle and some paint, and you're done.

IMIRanger
04-15-2006, 08:47 PM
Thats awesome man!!!

Viper
04-16-2006, 12:11 AM
One of these Nerf Howler footballs would be cool coming out of it.:) http://www.hasbro.com/common/images/products/56670312c230_main200.jpg

Dragon
04-16-2006, 03:33 PM
Firing BBs en mas shouldn't be too hard. All you need is a to make a cup that fits flush with the inside of the tubing, and then a rim from around .1-.25" wide going around the end of the tubing. It'll catch the cup, releasing the bbs.


"BB's en mas"? That's a shotgun not an RPG.

AustinWolv
04-16-2006, 03:47 PM
Sabot round: http://www.airsoftplayers.com/forum/topic.asp?TOPIC_ID=177

kestrel
04-16-2006, 04:10 PM
The only problem is that the valve is very difficult to turn. I am trying to find a way to make the handle longer and give it more torque so that will be easier to turn. Any suggestions?

You could use a solenoid valve instead, that way its a simple push of a button to fire, and you wont have inconsistancy issues that may arise with the manual valve(different pressure and volume based upon how fast you turn it). You can probably pick up a sprinkler system solenoid for very little. You *could* rig it up to a Co2 or HPA tank and use a pressure regualtor.. but thats probably unnessesary at this point as well as costly.

Dirus
04-16-2006, 10:42 PM
Yeah, was thinking about a CO2 canister, but that defeats the name "cheap RPG".

MrZero
04-17-2006, 04:29 PM
second the solenoid valve....