The Chu-ko-nu was created around 181-234 A.D. by chinese strategist Zhuge Liang. I have recreated his invention out of k'nex. I know that there are other repeating crossbows on this site, but i believe that this is the first instructable for a Chu-ko-nu style repeating crossbow. Here are some basic stats about my weapon:

Range: 30-40 feet. This is moderate range and I know most crossbows can shoot farther than this, but it is pretty good for the type of crossbow i think.

Magazine holds 9 red rods. But it only shoots 8 of them. The last one usually falls out because there is no pressure holding it in, but sometimes you may get lucky.

Power: It is not very powerful, but with a sharpened rod, you can get it to stick in cardboard

Piece count: (To make sure you have all of the pieces) Also if you do not have enough and would like to know other ways, please post on this instructable or pm me, i will be glad to help.

Rods: stock+bow+lever+magazine=total
green: 35 + 2 + 10 + 68 = 115
white: 44 + 58 + 6 + 67 = 175
blue: 44 + 23 + 4 + 16 = 87
yellow: 8 + 68 + 0 + 3 = 79
red: 11 + 0 + 8 + 0 = 19
gray: 0 + 0 + 4 + 0 = 4

Connectors: stock+bow+lever+magazine=total
gray: 36 + 18 + 10 + 26 = 90
light gray: 0 + 0 + 2 + 6 = 8
orange: 9 + 0 + 0 + 37 = 46
red: 8 + 6 + 0 + 5 = 19
green: 8 + 18 + 4 + 30 = 60
yellow: 22 + 54 + 6 + 36 = 118
white: 8 + 20 + 2 + 5 = 35
purple: 40 + 0 + 2 + 8 = 50
blue: 1 + 0 + 2 + 0 = 3

Misc: stock+bow+lever+magazine=total
blue spacers: 4 + 0 + 0 + 16 = 20
small wheels: 0 + 2 + 0 + 2 = 4
rubber bands: (this depends on the size) I used 4
duct tape

Uses a total of 932 pieces. As you can see, the magazine uses lots of small rods, so it will be complicated. Lets start with that to get it out of the way.

Step 1: Magazine(part 1)

I am going to split the magazine into several steps to make it more manageable.
Note that I have the steps on the picture as well. If you find that easier.
1. Make 2 of these
2. Add white connectors and blue spacers to one side
3. Connect the other side
4. Make this
5. And this
6. And this
7. Connect the finished product from step three to step 6
8. Put step 4 and 5 on top of the other thing you built, and use white rods to keep the top layer attached. Also add green rods inside the green connectors, they won't stay right now, but they need to be there.
9. Get a strip of duct tape about that long and wide.
10. Wrap the duct tape around the bottom and up onto the green connectors like this
Done with the lower track of the magazine!
im in the middle of building it and then I ran out of pieces. this sucks :(
I have to make that
pic 16 in mag part 3 is so blurry
not the first but its the first true chu-ko-nu ive seen<br />
false. i had one out before this but i deleted the slideshow because i wanted theb&quot; post the gun at christmas. ( we all know i delete all my slideshows hahaha) also mine actually works!! lol.
i know but look at the date and this does work to
Looks cool! Ima go make a bottom loaded repeating crossbow where all you have to do is pull the string back and fire now. 5*
lol then a year later there are a couple of those haha ^^
Good luck
&nbsp;I just started working on a better version. I fixed the first 2 problems in step 10 so they almost never occur. Im currently working on a better mag that wont jam.&nbsp;
DANG.<br />
https://www.instructables.com/id/knex-repeating-crossbow-1/<br /> <br /> check mine out!!!!!!&nbsp;
Very innovative, I like it!&nbsp;5.0.
Hey bryoda can you put up a video or a picture showing what the crossbow did to that box to show the destruction capacities
I like the list of parts (and the design), but there's something missing...<br /> <br /> # of purple connectors?
&nbsp;Oops, i accidentaly put those as brown connectors, ill change that
This is great!! A knex first.
<p>NO its not. Check out my slideshow called some of my new guns. And look at the post date</p>
But this one looks and works like a real one.
<h3 style="color: red;">so does my&nbsp;NEW one on my new slideshow (some of my new guns) Check it out.</h3>
Thanks! my one friend gave me the idea, he heard that i build k'nex guns and he mentioned this to me. I looked it up and thought it would be great to make from k'nex. Before too long i think there will be a flawless version of this
Will you be working on this more? I'll build it&nbsp;if you make it flawless.
No gun is flawless.
*Work extremely smoothly.
Thats better.
I changed my mind, I won't be building.
&nbsp;I've been working on it for a bit, and i cant get the magazine to work flawlessly, i've fixed all the other problems, but the magazine still gets jammed about once every 10 shots. So i've sort of given up on it for now
Have you identified the cause of the jamming?
hey is there any way i could replace the wheels? Because the only ones i have are slightly to big<br /><br />
&nbsp;On the magazine, you probably could replace those with white connectors, i haven't tried it, but i think it would work. On the bow, you can just remove the wheels and wrap the rubber bands around the blue rods.
Looks cool just like a Chinese crossbow.
Um.....That's what it is.
Duh, it IS a chinese crossbow.
btw 5 stars<br />
THAT THING LOOKS AWESOME,&nbsp; i'm going to build it right after my current project.<br />
Excellent work, 4.5 stars, if you can get it to work smoothly consistently, then I'll give it a 5.
I would say the misfires were due to human error, that he (prbably) didnt push the lever all the way forward, making it not load correctly.
Looks promising!
Yes, innovation over power any day.
You know what you need? A video. Looks great. A video would really help though. Nice work!
Look at step 9.
This is great, very nice job. If you keep working on it I'm sure you could work out all the problems and then it would be even better.
I agree, and most of the problems I have occur very infrequently, but part of thereason that I put it up for was because other peoplecould help and offer critisism and try some stuff themselves

About This Instructable




More by bryoda:K'nex Chu-ko-nu/Repeating Crossbow Knex Chu-ko-nu or repeating crossbow 
Add instructable to: