Introduction: Plasmaspy's Knex Compound Bow

heres my compound bow! its very sturdy and fun to play with!
building is pretty simple just stare at the pictures, most of its completely symmetrical anyway. =]

peice count=

cons =

yellow = 20
green = 20
white = 23
red = 14
orange = 12
grey single slot = 8
y clips = 6

rods =

green = 60
white = 48
blue = 14
red = 8
grey or black longs = 8
yellow = 2

misc =

blue spacers = 36
wheels = 2

Step 1: Stock

this is the stock or handle of the bow. most of it is symmetrical.

Step 2: Limb Connecters

the parts that connect the limbs to the stock. the most important part.

Step 3: Limbs

the limbs of the bow. i would recommed either using all grey rods for more power. dont mix black rods with grey rods cos it will make it deform.

Step 4: Limb Wheels

the pulley system wheels at the end of the limbs.

Step 5: Arrow Guide

the arrow guide and string separater. i would recommend using wooden kebab sticks for the arrows instead of grey/black rods.

Step 6: The Bow String

this part will tell you about the bow string. have alook back at the arrow guide pictures to see the positioning of the string on the the arrow guide.

Comments

author
hrishi4040 (author)2016-04-13

Dude I am SICK of this bow. It is very good to make it but the only prob with it is the range:| I think u should extend the white connector part for its shooting range bro !

Still I like the Design and the HEAVY middle piece! :D

author
agu2 (author)2014-06-16

Darn I'm torn between whether to make your bow or Matrixtechnicians one, they both look so awesome but unfortunately I don't have the time (nor am I sure if I have enough pieces) to build both.

author
parshan (author)2013-11-11

Heavyweight Champion!!!

author
SuperSlay3r (author)2012-08-31

Dude. I Only have one thing to Say. FTW!!! 5 Stars Bro :D Nice Job!

author
Derpancakes (author)2010-10-20

Wow! I wanted to get a compoun bow but didn't want to spend hundreds of dollars. I saw this and built it, and lightly modded it. It has a great design and construction! *****

author
plasmaspy (author)Derpancakes2010-10-20

thanks! glad you like it :D

author
Derpancakes (author)plasmaspy2010-10-30

I just added a sight, and also added some extra support to the arms.

author
plasmaspy (author)Derpancakes2010-11-15

cool! any pictures?

author
antonk (author)2008-07-07

is it worth making

author
plasmaspy (author)antonk2008-07-08

yeah!

author
bubba j (author)plasmaspy2009-06-01

yes totaly but i dont have enogh knex :.-( but how mutch is it axle to axle???

author
TheKnexNoob (author)bubba j2010-10-24

lol. Indian Priest. Yes, I know, I'm nearly 2 years late.

author
knex_mepalm (author)plasmaspy2009-08-11

there is a whole lot of tension!

author
apples!!!!! (author)antonk2008-07-07

I think so. Yes.

author
olibogger (author)2010-06-06

i built it today added a pin sight shoots amazingly far i used wood dowels

author
plasmaspy (author)olibogger2010-06-30

nice!

author
Decon93 (author)2010-03-27

i built this and modded it to have more strength on the arms of the bow and it works pretty well the only problem is the bands sometimes move out of center causing an innacurate shot. by the way i also removed the column of white connectors and so now i fire sharpened dowel rods out of it although its not very accurate like that but still very powerful it makes big dents in my back fence wen fired from about 15 feet away

author
knexfreak95 (author)2009-12-26

 only problem is it doesn't have a cam

author
ILIKEPIE333 (author)2009-05-29

looks very good! 4.5*s because of the instructions (a little incomplete, just take it apart!) what's the range?

author
erikos kostarikos (author)2009-02-20

i like the bow but the instructions...they sucks. these are just pictures from the parts.

author

yup except 1. i couldnt be bothered to take it apart 2. you dont need better instructions you can build it easyily from these pictures. 3.baaka!

author
Trogador (author)2008-08-05

If it's not too bothersome, could you possibly add in a piece count?

author
plasmaspy (author)Trogador2008-08-08

yeah il try also im gonna a part to this show how to turn it into a force multiplying power bow. its way more powerful than this one.

author
DrWeird117 (author)plasmaspy2009-01-23

I DON'T SEE IT!! ME MAAAAAAAAAAAAAAAAAAAAAAAD!!!!!!! RAGH!!!!!!!!!!!!!!!!!!!!

author
Trogador (author)plasmaspy2008-08-08

Wow... thanks! That's a pretty small amount of pieces; I'm definitely going to have to build this :D

author
plasmaspy (author)Trogador2008-08-09

ty! =]

author
DJ Radio (author)2008-11-15

You did a better job than I did, except on the grip:

bow 001.JPG
author
seansippo (author)2008-10-28

looking at this the most trouble im probably going to have is the rubber bands. could i possible get a little more detail on the number of bands needed, there length, and how to connect them together? im liking the idea of having a composit bow that i can play with without much worry, like my real one : ).

author
seansippo (author)seansippo2008-10-29

ok now i am noticing a little trouble understanding the connection in the very middle of the stock with the orange piece and the green pieces.

author
arrow shot (author)2008-10-09

i havent seen this bow on the website until you said you made 1 on ltcheesecracker's bow. Nice design, shouldnt break much... i can never make a bow that has a good sturdiness

author
pls (author)2008-10-08

i love the look, may make this:)

author
plasmaspy (author)pls2008-10-08

ty =p

author
tecrogue (author)2008-10-02

I know you posted this a few months back now, but is there any way we could get a photo of the middle section of the stock? I'm having trouble making out what all is there, and how things fit. Thanks!

author
jollex (author)2008-09-21

This is awesome! I built it but I changed the arrow guide because I didn't like yours. For arrows I use two wooden BBQ skewers taped together.

author
aleigh45 (author)2008-09-06

I'd like to see an Instructable on how to make a real compound bow out of wood or something.

author
amtdude (author)2008-08-12

what type of arows do u use

author
plasmaspy (author)amtdude2008-08-13

i use the wooden bbq skewers that you can buy at super markets and stuff. =]

author
Onii (author)2008-07-31

Haha, this bow is freaking awesome. You did an awesome job on the limbs. This is my version of it.

Omar's Compound Bow 1.jpgOmar's Compound Bow 2.jpg
author
Trainman 2001 (author)Onii2008-08-11

thats beast

author
plasmaspy (author)Onii2008-07-31

nice! =D

author
apples!!!!! (author)2008-07-02

hmmm..i want to build! do you get you rubberbands from a rubberband ball? cause they look like the ones i use.

author
plasmaspy (author)apples!!!!!2008-07-02

yeah!! i got my band ball from woolworths! =]

author
flames10391 (author)plasmaspy2008-07-03

We used to have those in New Jersey when i was a wee tot but now they are all gone :( r.i.p. woolworths

author

are not they have it at staples and target and all over the place

author

lol yeah i got mine from target

author

im talking about the store, not the rubber band ball :P

author
apples!!!!! (author)plasmaspy2008-07-03

i think we have the same bandball then =) and nice job on the bow. i wish i could build but i dont have enough gray rods :S

author
plasmaspy (author)apples!!!!!2008-07-03

: /

author
apples!!!!! (author)plasmaspy2008-07-07

yay i built it! working on stringing it though....

author
plasmaspy (author)apples!!!!!2008-07-08

just make the string then connect the the end flapping bits to thye blue rod that goes through the wheel. then follow the next picture, following the string around to the other blue rod.

About This Instructable

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