How to Make a Knex Halloween Roller Coaster Costume With Lights

Introduction: How to Make a Knex Halloween Roller Coaster Costume With Lights

This is my knex halloween costume.  I know it is a half a month after halloween but I haven't had time to post it.  It has a motorized roller coaster and lights.  It does fit on my body, but I didn't take a picture of me wearing it.  If you want to build it, you have to have 1 and 1/2(you can build it with one but, you have to take out extra gears) knex vertical vengeance sets.  It fits me, a 12(almost 13) year old robot(in my description, I'm a robot).  It probably fits 11-14 year olds.

Step 1: Parts Count

The parts count
Regular sized rods:
Small Green: 12
White: 49
Blue: 95
Yellow: 83
Red: 7
Stiff Tan: 4
Orang-ish grooved: 2 (can be red rods if you don't have these)
Long Grey: 4

Regular sized connectors:
Grey/purple 1-connector: 97
Grey 2-connector: 0
Orange 2-connector: 6
Red 3-connector: 8
Green 4-connector: 40
Yellow 5-connector: 40 (I used a different color, it does not matter)
White snowflake connector: 32
Purple 3-d connector: 9
Blue 3-d connector: 13
Y shaped connector: 6

Regular to small:
Light blue/Purple/Light Green Rod: 1
Light Green Connector: 15
Black/red small rod: 2

Old Micro crap (rods):(vertical vengeance)
Small black: 11
Silver: 2
Metallic Blue: 6
Dark Grey: 15
Metallic Green: 2

New micro crap (rods):
Small black: 5
Yellow: 0
Grey: 2
Red: 4

Micro Connectors:
Grey/green 1-connector: 6
Brown/purple 2-connector: 10
Dark Grey/yellow 3-connector: 11
Metallic green/grey 4-connector: 1
Grey/red 5-connector: 1
Black snowflake connector: 4
Silver/blue 3D 4-slot connector: 12
Metallic blue/grey 3D 7-slot connector: 4
Y-connector: 3

Vertical vengeance motor: 1
Micro red drive rod for the motor: 2
Orange slips for red drive rods: 2
Micro Tan drive clips(connects to both sides of gears): 4
Micro Gray gears: 7
Micro Gold Gears: 1
Micro Chain Link: 69
Micro chain guides: 9
Micro Track: 5 pieces
Micro clear spacers: 9
Micro blue spacers: 2
Micro silver spacers: 2

Total parts count is: 737 pieces

Step 2: The Front Frame

This frame is for the front side of your body.

Step 3: The Front Frame Supports

This is all the add-ons for the supports in the front frame for the coaster.  When you are done with this.  Take two long, black, stiff rods and attach them to the purple 3-d connectors on the left and right side of the frame.  Make sure they are sticking on the opposite side than all the small add-ons.

Step 4: Th Back Frame

This frame is the back side frame.  It is the same exact frame as the front, but with the yellow rod.

Step 5: The Shoulder Holder(it Rhymes If You Didn't Realize)

These are the shoulder holders.  When I say "right" in the image notes and text, that means  put it on the right as if you were to be wearing it.  Same with left.  The motor assembly will be on your left in the next step.

Step 6: Motor Assembly

This is the motor assembly.  I hope you can see it.

Step 7: Back Thing That Holds the Stuff in the Back

This is the back thing that holds the stuff in the back.

Step 8: Assembly

The assembly is here.

Step 9: Track and Chain Guides

The track and chain guides.  The number in between the supports means how many bars are in between each support.
example: I = cross bar; ___ edge of track(only one edge of track)

I     I     I     I     I       <-- what it actually looks like(S means support)
S   1   2    3   S

I     I    I     I    I         <-- What you will see

Step 10: The Chain Link and Lubricating

The last step, finally!  The chain link and lubricating.  To lubricate, take a blue paper towel(grease paper towel for bike, motorcycle,etc.) or a regular paper towel and spray lubricant on it.  Take the blue paper towel and rub the wet part along the sides of the track all the way around the circuit.  By the way, if you are wondering about the string lights, really look through the pictures and find the path, its fun!

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    11 years ago on Introduction

    Tell me who is going to make it first!(technicly second, because of me)


    Reply 8 years ago on Introduction

    Dude, this is like two years old. I didn't think people actually still looked at it...
    But this probably would have made my former self proud, so thanks from the past.


    Reply 4 years ago

    I'm still looking at it lol


    Reply 8 years ago on Introduction

    The set I bought on Ebay was by some random person who apparently had one and a half of a certain set. Sorry for the inconvenience though. Try modifying the gears to use the smaller ones instead. I hope this helps, because I haven't looked at this project in a while.


    10 years ago on Introduction

    Nice Coaster, I recommend you to go to

    They have a lot of good builders there that could help you build a great coaster.


    10 years ago on Introduction

    I hope he has a great time with it. If you need any clarifications just ask me.


    11 years ago on Introduction

    Dude, this is totally awesome!

    If I had any mini knex I would make it.