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Step 1:
This is an awesome gun. It is very fun and not that difficult to make. It is also very cheap. The entire thing including a bunch of ammo could easily be made for ~$20, or much less if you already have a lot of the stuff ( you probably do). I spent about $15 but a lot of what I spent it on is extra and can be used on other things. I broke this instructable down into two parts: rockets and launcher, because it involves a lot of steps ( I didn't divide it into two i'bles though, just this one).
Contests:
-This is in the Krylon contest because it's painted with Krylon.
-This is in the "launch it" contest because it launches rockets.
-This is in the Celestron space challenge because it uses rocket propulsion. And it would work in space I think.
Quote from ATF relating to the legality of this project:
"...As defined in 26 USC subsection 5845(f) (2) the term destructive device includes any type of weapon by whatever name known which will, or which may readily be converted to, expel a projectile by the action of an explosive or other propellent, the barrel or barrels of which have a bore of more than one-half inch in diameter, except a shotgun or shotgun shell... The term 'destructive device' shall not include any device which is neither designed nor redesigned for use as a weapon ; any device, although originally designed for use as a weapon, which is redesigned for use as a signaling, pyrotechnic , line throwing, safety, or similar device; surplus ordnance sold, loaned, or given by the Secretary of the Army pursuant to the provisions of section 4684(2), 4685, or 4686 of title 10 of the USC; or any other device which the Secretary of the Treasury or his delegate finds is not likely to be used as a weapon, or is an antique or is a rifle which the owner intends to use solely for sporting purposes. ..."
This quote is from: http://www.launchpotatoes.com/index.php?act=viewDoc&docId=7
I think that means this is legal as long as it is not used as a weapon.
Contests:
-This is in the Krylon contest because it's painted with Krylon.
-This is in the "launch it" contest because it launches rockets.
-This is in the Celestron space challenge because it uses rocket propulsion. And it would work in space I think.
Quote from ATF relating to the legality of this project:
"...As defined in 26 USC subsection 5845(f) (2) the term destructive device includes any type of weapon by whatever name known which will, or which may readily be converted to, expel a projectile by the action of an explosive or other propellent, the barrel or barrels of which have a bore of more than one-half inch in diameter, except a shotgun or shotgun shell... The term 'destructive device' shall not include any device which is neither designed nor redesigned for use as a weapon ; any device, although originally designed for use as a weapon, which is redesigned for use as a signaling, pyrotechnic , line throwing, safety, or similar device; surplus ordnance sold, loaned, or given by the Secretary of the Army pursuant to the provisions of section 4684(2), 4685, or 4686 of title 10 of the USC; or any other device which the Secretary of the Treasury or his delegate finds is not likely to be used as a weapon, or is an antique or is a rifle which the owner intends to use solely for sporting purposes. ..."
This quote is from: http://www.launchpotatoes.com/index.php?act=viewDoc&docId=7
I think that means this is legal as long as it is not used as a weapon.
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-amazing design. simple, cheap, lightweight, and requires no special tools. t
-looks badass and seems to operate well
-the clip fed system is really nice
-ignition system is simple, requiring no knowledge of electronics
-i would make this, but i would make it larger diameter, and modify it to use store-bought model rocket engines. the home-made rockets are nice, but i have never felt entirely safe with them, just my paranoia. unfortunately, store bought rocket motors are prohibitively expensive.
AMAZING JOB. keep it up
really cool
Do you think this could be done with regular hobby rocket engines?
Also, a tried, tested and true method of keeping your rockets flying straight over long distances (100s of meters):
1) take a drillbit about half the diameter of your nozzle
2) make two marks on your engine where the nozzle and propellant material meet
3) drill at 45-75 degree angles at both marked points
This results in the rocket exhaust being used to spin stabilize your rocket, which is usually quite a bit more reliable and predictable than using fins.
A friend and I had, at one point, built something similar to this; but single fire and relying on hobby rocket engines for ammo. We were able to reliably hit our target, a 2' tree, at approximately 35m, with a smoke bomb tip attached.
I'd love to see you test it with your rockets as well, it seems like it would be truly impressive putting out multiple spin-stabilized rockets. Especially with a custom "signalling" tip.
I think this is brilliant! (your instructable, not my idea)
Please vote for this in the "launch it" and Krylon contests if you think it is worthy. It might not show up that I entered until tomorrow though.