Instructables

Fully automatic knex gun (UPDATED)

FIRST OFF: DO NOT BUILD THIS GUN, ITS A PROTOTYPE!!

This gun is based off of bakenbitz idea and i just improved it and changed it around. Its fully automatic. It works by cranking. I made this gun to shot airsoft bbs but thats just because i like that so u can make it shoot something else if you like. It probably shoots about 3 or 4 per second. It comes with a clip that holds about 23 bbs. If enough people ask for the instructable than ill do it. It still needs some work but it doesn't shoot to far but its a brand new design and there is nothing else like it that i can find. hope you like it. please comment on what you think about it and if you upgrade it please tell me thanks.

UPDATED NEW VIDEO
don't forget to rate and comment



PARTS LIST
connectors-6 double gray connector
-12 green connector
-26 purple connector
-12 blue connector
-77 single gray connector
-1 ball joint connector
-29 yellow connector
-36 black Y connector
-8 orange connector
-27 red connector
-19 white connector
-11 brown rod connector

rods
-87 green rod
-32 white rod
-26 yellow rod
-5 long gray rod
-1 blue rod
-3 red rod

gears
-2 small gear
-2 big gear

spacer
-10 gray spacer
-19 blue spacer

TOTAL
451

i made a real semi auto knex check it out
http://www.instructables.com/id/TRUELY-semi-auto-knex-gun/

MY NEW KNEX HAND GUN REVOLVER
http://www.instructables.com/id/8-SHOT-KNEX-HAND-GUN-REVOLVER/

MY 12 SHOT KNEX GUN
http://www.instructables.com/id/extreme_builders_12_shot_knex_gun/

hey everyone,
check out my youtube page
http://www.youtube.com/user/KNEmovies
 
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Step 1: Body

Picture of body
make this

Step 2: Barrel

Picture of barrel
100_2506.JPG
100_2507.JPG
this is the barrel

Step 3: Crank

Picture of crank
100_2514.JPG
crank

Step 4: Clip

Picture of clip
sorry it is a little blurry

Step 8: Add it all

Picture of add it all
100_2518.JPG
100_2519.JPG
ur done
=)

what's the range

www13914 days ago

Looks cool! Can't wait to build it!

Jasp3r5 years ago
I've only got a little gear without tan connector hole, so mine slips cuz it isn't attached to the axle. How do I solve that?
Get two stub connectors (small blue things with no hole) and try pushing them close up to the gear
if u use the tan ones with the stubs on them u can connect them in the small holes in the sides of the gears
But then when the gear rotates, it would be blocked by that tan connector which would cause many problems
super glue
chasm Jasp3r5 years ago
You can't
XxsonicxX2 years ago
I need t say this... i isn't fully automatc, its crank action
the grey clip is broken a clip to hold the bb's
danroy992 years ago
Does it work with metal bbs?
arjun12 years ago
does not work
jake scythe2 years ago
it is basicly a gattling gun in rifle size
donnie23 years ago
mine wnt work no matter wat!! :(
As the description says, it's a prototype. I built it too, it is very unreliable.
when i built one it would blow up in my face every time but i will try again. it is ok if you make fun of me for it blowing up.
Ow..... That's... Unfortunate.

I won't make fun out of you. It is a commonly known fact that most full-auto's have a tendency to blow up.
ryanreers3 years ago
if you switched the gears they crank would turn faster
but there would be less torque causing it to struggle under more rubber bands
I added a motor instead of the crank and it became automatic.
Rename this the PM63.
flyerminer3 years ago
plz find out a way to just use knex ammo and not airsoft bbs! it'd make meh happy. =D
Spycrab3 years ago
the 'airsoft bb's' thing disappointed me :\
Blackbird173 years ago
sry but i took this apart along time ago. we are moving soon so i cant do anything soon sry
Blackbird174 years ago
i can add a barral to shoot green rods if u want
could you plz send me some pics or a clip on how todo this. thanx
sukinmaru3 years ago
cool, you ought to make a Mulcher from GoW2
Merugop4 years ago
Oh yeah what are those grey parts in the middle
Those grey parts in the middle of the barrel are 3 tan clips.
anres3213 years ago
hey I have made a fully automatic knex gun that works with a totaly diffirent system that is never used before on a fully automatic one. So would you plz tell me wath you think about it ?? here is the URL: http://www.instructables.com/id/Fully-Automatic-knex-Gun-it-really-works-/
snow clones3 years ago
Great gun; try making a high mag, high power, bolt slingshot sniper! I've made one and it goes about twice as far because you use a bullet that slides on the rail, and the power is a slingshot.
i have seen it on you tube im paranid630
joelyboy944 years ago
 Your photos are fine and your guns wicked, but you mite find knex mlcad useful - there are quite a few annoying flaws in the program because its pirate, but if u manage u can make decent images and instructions. im not gonna lie its hard but tell me if u want the program
smattman224 years ago
mine wont fire or pull back far enough.
extreme builder (author)  smattman224 years ago
you must of done something wrong than
i have thick rubberbands. but it doesnt slide all the way foward
I know what you mean. You've gotta add spacers (not connectors or there will be blocking something) here:


help.png
extreme builder (author)  smattman224 years ago
i dont know what to tell you. try less rubberbands
your photos arent showing up on the screen but other guns are.  Do you know what that is
robb454 years ago
i made this gun end it sucks wen i want to crank it brokes
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