[Hrawk]

As the title says, do you want to see a blowgun shooting 700+ fps with a few simple additions ?

First thing you need to get is a CO2 tyre inflater from your local bike shop or on-line. Be sure to get the type with a trigger. Expect to pay around $20 for one. Don't forget to get the CO2 cartridges to go with it, around 50c each. You'll get dozens of shots from a single cartridge. Oh, and grab a valve removing tool for a schrader valve while you are there. About $2 each and quite often included in tyre repair kits.

CO2 Tyre Inflator

Schrader Valve Core Removal Tool

Secondly you want to get yourself a rubber Schrader valve, the type used in car and motorbike tyres. These can be purchased in pretty much any auto store or salvaged from an old wheel. You can also cut them out of an old inner tube, but these are not so great though will work in a pinch.

Schrader Valve

Step 1 : Purchase or salvage the above components

Step 2 : Remove the core on the Schrader Valve

Step 3 : Attach the tyre inflater to the Schrader Valve

Step 4 : Hold the tyre inflater with schrader valve to the mouthpiece of your blowgun. You may want to modify the schrader valve for a better fit

Step 5 : Point the blowgun in a SAFE direction with an adequate backstop

Step 6 : Squeeze the trigger on the tyre inflater

Step 7 : Pick up your jaw.

 

[The Warrior]

Cool. When I was young, my friend and I shot his old, wooden shed door with a homemade conduit bg, and a clothes hanger dart. The dart wasn't sharpened, but it stuck so far in the door, we had to get vise grips and a lot of effort to get it out before his dad saw it. We stuck the air chuck from his air compressor in the end, and gave it a blast with 100psi. We were probably standing about 15 feet away.

 

[jtilley]

Yeah, i can see you are gonna get me in trouble...... I did build a blowgun once upon atime with a tank I filled to 100 psi then released it via a ball valve into the1/2" x 3' copper tube. Not sure of the velocity , but it put a 12" x 5/16" wooden dart through both sides of a 55 gallon plastic drum at 15 yards, it was impressive but inconvienient, tire inflator though..................

 

[Hrawk]

You're giving it a blast of about 700 PSI with the above setup.

 

[jtilley]

Oh yeah, varmit killing machine

 

[Hrawk]

I once used this setup to shoot a commercial .40 cal dart into a piece of hardwood.

The end result looked like a flattened spring. The shaft just folded up and wound around itself.

I never could remove it.

 

[Hrawk]

Just be careful people if you do decide to try this.

 

[jtilley]

Definately, because "Safety is no accident"

 

[NightKnight]

Wow! That's awesome! Don't try this at home!

 

[superman365]

I made an "air rifle" out of some 1/2 inch pvc, shrader valve, and a pvc valve....I usually pressurize it to 130 psi....shoots heavy duty homemade blowgun dart and 3/8in steel balls (superheavy ones)......first time i shot it....I used the 3/8 ball and shot it at about a 45 degree angle up....that thing fly so far and so fast.....I swear I almost crapped my pants.....I think a may have brokken someones window far far away but no way of knowing!! the darts (duct tape cone with a big nail), when shot ino wood....never can get them out.....I'll see if i cant post a pic somewhere....

 

[NaturalFork]

I get 700fps with my breath! ..... but seriously this is very awesome.

 

[cjb4u]

Oh I so got to try this!!!

 

[Turtle]

Cool Hrawk, thanks for the info. However, I think I'll leave this build alone and watch you other chaps have at it.

 

[Cervantes]

I did it. Works great, but a little awkward to hold and aim. May have to work on a bracket to old this more like a pistol with a really, really long barrel.

 

[Pelletor]

@ superman365

i have a very similar air rifle "in process" but I have been distracted by the human breath powered kind but glad to hear of the performance of your air rifle. Thanks for sharing it.

 

[superman365]

I'll post pics later maybe....it not real pretty and its my first so dont have high expectations...the point is that it works well

 

[Gigmaster]

Why would you want to go to that much trouble? Why not just use an air rifle? My Beeman shoots over 1000 fps, and shoots either .17 cal, or .22 cal pellets (interchangeable barrels). It also shoots airgun darts.

 

[ducttapeanddarts]

i made something similar. it had a PVC pressure chamber that can be filled with a bike pump, and hooks up to a 40 cal or 50 cal depending on the *cough* duct tape *cough* adapter. shoots ome heavy darts pretty fast, but not that accurate. the trigger system is a blowgun valve.

 

[katagelan]

I would not be surprised if some .625 tubes would fit inside a .68 paintball barrel. Cheap and more ergonomic.

In olden times there were even .625 paintball guns.

http://www.zephyrpaintball.com/product/JT-2010-6151/JT-Raptor-Pump-Paintball-Gun---Black.html

 

[orcrender]

Here is a link to another .625 cal paintball marker http://www.vintagerex.com/museum/Tippmann/SMG-60.html