A couple of things I've been working on for the longest time but never bothered to upload. There won't be more of this until summer, because I'm back at school again................
First, a revision of my pump-action magazine fed homemade from about a year ago. When I first designed the gun, my intent was to make my own magazines out of folded steel flashing, music wire, and PVC, but the process turned out to be much too time-consuming and hard to repeat consistently. Even though the shells were cool, I didn't feel like making and picking them up all day, so I decided instead to use more widely available longshot magazines.
This was made about a bit over month ago, but I didn't have easy access to a camera until a few days ago. As, you can see, there were some slight changes in design from the CAD stage to the fabrication stage, this was due the impromptu addition of random features such as the folding stock (just for badassed-ness) and my not knowing exactly what all I had to work with. The stock is also padded for user comfort, while cocking that massive +bow spring back.
Same as last time, this gun was design with ease of fabrication and mass-production in mind. I incorporated a threaded adapter on the front of the gun for quick and easy barrel swapping in order to accommodate different styles of darts, and although it is not seen in the 3d model (in order to save time), the barrel mechanism is also spring-loaded to provide a more positive seal around the conical bolt face.
Other features include the threaded plug at the rear of the reciever. This allows the spring to be easily removed or swapped out and also allows direct access to the internals for the application of lubricant (I use air tool oil). In this design I used cup styled seals for the plunger and bolt involving neoprene washers sandwiched in between fender washers or PVC for a much better seal than o-rings due to the slightly uneven nature of the inner pipe-surface. When I go back home for the summer I may just build add a bayonet mount and stick a full-sized foam sword on the end just because. Then the gun will be a freaking monster.
I know someone will ask about RANGES so here it goes:
I used a +bow mainspring, almost fully compressed (really hard to do), and over a foot of nice and snug fitting barrel for my darts.
Some of you who actually read may have seen this before, most people I expect probably haven't
click here for the thread.
Pneumatic Nerf "Grenade"
Reusable, operates with a precharged pressure chamber in the tail section and a replaceable burst disk (see threaded coupler). Relies on a frontal impact kind of like the scatter blast, but more sensitive and with MUCH better spread (15-20 ft all directions).
It carries a payload of 32 nano-darts, and since me and my friends play with homemade felt scoring vests and homemade velcro darts (to eliminate really dumb outs from hand and foot shots and for more positive in/out status), I've begun loading these with velcro tipped nano-darts.
Also, notice how excellently the front is padded, I wonder what that could mean.........................
INCOMPLETE- Summer 2008
The finished launcher will fire the grenades rear-loaded with foam cup sabots. It will also have a ridiculous amount of pressure restriction so that it will never reach harmful velocities and if anything, the grenade weighs less than a football and is much more padded than one, so if you've ever been hit by/caught/etc. a football before, you should be just fine.
The revised design for this will have enlarged fins, a slightly longer tail section, angled barrels for better spread, and foam coverings for ALL exposed PVC.
I might try and incorporate a matched RSCB spotting gun into the final design just for kicks and maybe to operate almost as a secondary fire function, but I won't be able to do anything until summer, so only time will tell...........
I'm sorry Slug, but this guy might give you some competition (sp?). Anyhoo, sweet guns and grenade-thingy!
Haha, thanks. I'm glad you like my stuff, but quite honestly I'm nowhere as good as him.