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JetJolt K'nex Gun

$JetJolt K\$

My first instuctable - the gun is okay, featuring a new firing method I invented. It shoots between 30-45 feet, though I've occasionally gotten over 50. Easy to load, make and shoot and in general a good firing technique.

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Step 1What You Will Need

To make this gun, you will need:
6 gray rods
15 purple/silver connectors
1 blue connector
5 white/black connectors
8 blue rods + 1 for firing
10 red/grey connectors
6 yellow/grey-white connectors
1 orange/brown connector
1 red/green rod
4 blue spacers
4 silver spacers
30 green/black rods
5 dark gray connectors
1 black stange connector (stubs)

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36 comments

Feb 15, 2010. 8:47 AMredrover95 says:

really good gun

Aug 7, 2008. 12:11 PMninjusk says:

what does it shoot

Aug 7, 2008. 10:16 PMjetjayjay (author) says:

Blue rods work the best by far.

Jun 30, 2008. 7:12 AMstrato96 says:

great gun jetjayjay!

Mar 4, 2007. 1:50 AMjetjayjay (author) says:

Hey guys, here are some good firing tips:
1) Rather than pulling back the trigger, push forward the rest of the gun. This will make the gun shoot farther.
2) You can aim by shoving the gun into your face and lining up all of the connecters at the top of the gun.
3) When firing, do it quickly.
4) when loading, try to have the rubber band pulling against the middle of the back of the fired blue rod, and not pulling the edges.

Mar 6, 2007. 9:46 AMbunduk says:

this gun is really clever and satisfying to shoot but it is not very accurate is a pain to load, also it does not shoot a long distance but it was well worth posting.

Jan 7, 2008. 5:16 PMLudwig Gunner says:

Ha ha! thats what I think about the 9mm from youtube made into an instructable by HBF.

Mar 6, 2007. 11:30 PMjetjayjay (author) says:

A pain to load??? Why is that? It's one of the easiest to load on the site! When you load it, is the black odd connecter at the end of the firing rod perpendicular to the rubber bands? It should be like that. It should also be touching the white/black circular connecter at the front of the gun.

Jun 9, 2007. 1:37 PMjetjayjay (author) says:

Hey guys! I rather ecently invented a different firing method for a cannon which is a variation on this one. It seems to be very efficient (60 feet with 2 rubber bands!) and I may or may not post soon.

Sep 3, 2007. 11:15 AMknex_builder_freak says:

plz post

Aug 28, 2007. 4:44 PMdan da man says:

definetly post it

Aug 16, 2007. 9:17 PMthe commentor says:

I like your specifics. can you make an auto-assault rifle? you give detailed explanations.

Jun 21, 2007. 3:30 PMryan101 says:

Really cool design!! Thanks jetjayjay! Its really fun!

Jun 22, 2007. 4:15 AMjetjayjay (author) says:

Thank you! :-)

Jun 1, 2007. 7:24 PMstickylaffytaffy321 says:

Very Good GUn shoots far nice!

Jun 2, 2007. 1:23 PMjetjayjay (author) says:

Thanks :)

Mar 25, 2007. 4:25 PMThat Hurt This Time says:

I dont have the black connector thing, Can this be subbed with a grey end cap?

Apr 15, 2007. 9:13 PMhack124x768 says:

You can get a lot of them from knex set's that have the little men with them. Thats where all of mine came from.

Mar 27, 2007. 11:17 PMjetjayjay (author) says:

I'm sorry, but the strange black connector at the end of the firing rod may not be replaced.

Apr 16, 2007. 8:27 AMbobbyk881 says:

they are called stubs

Mar 17, 2007. 10:12 AMHigh_me says:

wow. this gun does shoot far! it's AWESOME.

Mar 2, 2007. 7:35 PMLostkid says:

i built this gun and I cant figure out how to shoot the gun. please help me.

Mar 14, 2007. 3:55 PMredfangratthing says:

pull the handle back

Mar 3, 2007. 4:21 PMLostkid says:

nvm i figured it out. its a good gun. not super greatly awesome but not bad. Also i like the new gun design

Feb 25, 2007. 7:49 PMzero0928 says:

WOW i built this and it kicks ass i love it!! amazing concept for the trigger. AND a questyion does it matter how manny rubber bands u put on it?

Feb 27, 2007. 3:44 PMzero0928 says:

Thanks and im kinda new to instructables how do u add somthing to ure favs?

Feb 28, 2007. 7:40 AMjetjayjay (author) says:

Just press the "+" sign at the top - right of the page. Oh, by the way, I set myself a record with this gun by shooting it 50 feet! That's a LOT for me (which is probably kind of sad). Feel free to post your records, suggestments and feedback on my gun!

Mar 2, 2007. 8:12 PMcowscankill says:

the farthest one ofmy guns I invented onnly went a max of 30 ft...

Feb 27, 2007. 8:09 AMjetjayjay (author) says:

Thanks! Oh, and it does matter how many rubber bands you put on it. Putting on more than 1 rubber band may sometimes result in the black weird connecter at the end of the firing rod release the bullet too quickly, resulting in a poor shot. However, I have not tested this a lot, so maybe you will be able to put on more and it will fire better.

Feb 13, 2007. 3:01 PMredfangratthing says:

this gun is the best eva took me an hour to build the trigger lol

Feb 11, 2007. 10:57 PMjetjayjay (author) says:

Vertigo666 - the trigger is just pulled back and because it is connected to the firing pin and the firing pin holds both the rubber band and the blue rods(see step 7) when it is pulled back and the strange black connector can't hold the rubber band any more. This makes the rubber band "catapult" the blue rod from the gun.