Knex Door Lift Instructions




About: [back in buisness] Hello people! My name is Martijn. Welcome to my page. Here you will find various knex items i have built, mostly ball machines. Currently i am working on a ball machine, featuring as al...
finally here are the instructions for my famous door lift. i hope it's all clear enough and good luck!
sorry for bad quality pictures

part list:
grey rod: 6
red rod: 32
yellow rod: 85
blue rod: 116
white rod: 57
green rod: 152
white connector: 21
blue connector: 34
purple connector: 89
yellow connector: 58
green connector: 11
red connector: 30
grey (2) connector: 22
orange connector: 53
grey (1) connector: 36
tan clip: 21
blue metal clip without pin: 8
black rod end clip: 18
black hinge part: 6
orange clip: 2
spacer: 29
ring: 93
red gear (grey one): 3
blue gear: 3
12v motor + white gear: 1
total: 987

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Step 1: The Base

Step 2: The Middle

the middle has two components almost the same.

Step 3: The Top

Step 4: Connect

connect the three parts

Step 5: Pushers

the pushers is the main part of the door lift.
the pushers work from both sides, the side where the motor is, and the other side.

Step 6: Connect the Pushers

connect the pushers with this thing.

Step 7: Gears and Motor

this is the part where the motor drives the door lift.

Step 8: Congratulations!

you just finished the door lift. have fun!
i hope it was clear enough.

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    28 Discussions


    2 years ago

    I'm working on a new design for this lift... Instead of the pushers being on the slider rods, I'm working on creating a cart that the pushers roll on. I think it will work with less friction and run smoother... pics soon, I hope.

    Coole lift ik heb hem gebouwd en hij werkt perfect! Ik ga hem gebruiken in mijn volgende knex ball machine.


    Reply 7 years ago on Introduction

    no you can use every knex motor that's powerfull enough. otherwise you need to gear it down.


    Reply 7 years ago on Introduction

    Can I use these pictures for the Official Guide to Ball Machine Lifts?


    Reply 7 years ago on Introduction

    Same goes for rolling arm and parallel arm lift. (tell me if you have more lifts!)