How to Make a Revolving Ball Machine

Introduction: How to Make a Revolving Ball Machine

About: I'm into knex ball machine stuff. My favourite parts are lift/element hybrids, probably because I tried building a perpetual ball machine. It didn't work, of course. All my knex stuff is creative common, an...
This can be called a ball machine, be used as an element, or be used as a lift. Here is a guide/tips on how to make one.

Example as ball machine:

Examples as a ball lift:

Step 1: Design

I recommend building an octagon-shaped wheel.

The two most important parts to consider are the width and the radius.

A larger machine is more impressive than a smaller one, but has to run slower.

Choose some elements which can be used from any angle, such as the Flipper, a Ferris wheel, or an Arm drop.
Also, keep in mind that the machine will inconsistently rotate.

Step 2: Returning Ball to Top

Use hook-shaped paths the bring the ball to the top.

Step 3: Stand

The machine needs to be held above the ground.

Attach a motor and gear to the stand.

Step 4: Counterweights and Gears

Distribute the weight of this machine evenly around the outside. The centre of gravity should be the centre of the machine.

Use gears to slow down the machine. This puts less stress on the motor.

Step 5: Entrance and Exit Tracks

Optional - This is for turning it into a lift.
This is the same as the wheel lift with holes. Make a hole for an entrance track, and a path tilted to the side for an exit track.

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    10 Discussions


    4 years ago

    Please make instructions for the ball machine shown!!! I would DEFINITELY build it☺☺☺☺☺


    Reply 4 years ago

    I've taken it down already. I suggest you try making your own design.

    Pop on to this guide where you will find all the classic ball machine elements, and stick them in whatever order you want.

    Make sure you plan every element before you start. This will make it a lot easier.


    6 years ago on Introduction

    I had the idea to make such a ball machien the week before you uploaded on yt......oh well, seems like you were quicker, and you did a great job! :D

    That's very innovative! This new type of ball machine (I think it can be called a new type) has many possibilities, and can be modified to your liking. Good job and voted! :D

    WOW! This is ingenious...crazy fun! I'll bet it takes a LOT of forethought in the design stage though. :-) Incredible how all the different parts interact with nothing but rotation and gravity. (But then again, that's descriptive of all ball machines...) This truly could be used as "a ball machine within a ball machine".
    So, um, how many paths would you say it has? ;-D


    Reply 7 years ago on Introduction

    I have only attempted to make a single path for this. You can have more than 1 entry track (on the same side) it you get a good design, naturally making it a path selector. OR you could use a path selector where gravity doesn't play a big role it, increase the friction, then add it inside the revolving part.


    7 years ago on Introduction

    Nice concept! Elements have to be thought out in a different way since they'll be rotated, which makes designing them fun. :-)