Introduction: Knex Ball Element - Bowling

Picture of Knex Ball Element - Bowling

Here's one of my knex ball machine elements I designed a while ago, which I used again in http://youtu.be/wKzJOZih_K8. It swings the ball about 200 degrees then sends it rolling like a 10 pin bowling motion.

Personally, I prefer the 'metallic' colours for this element, but for the sake of instructions I'll use classic pieces.

Step 1: The Inner Cube

Picture of The Inner Cube

The element has a centre pivot point that goes through this.

Step 2: Top Supports

Picture of Top Supports

The ball goes in this.

Step 3: Pivot Supports

Picture of Pivot Supports

This is where the rod goes through for the rotation.

Step 4: Counterweights and You're Done!

Picture of Counterweights and You're Done!

Once you add the counterweights you're complete. The ball should always fall one way (see step 1 picture 3) and roll the opposite direction.

Comments

Linkin_J_Knex made it! (author)2015-09-02

It's great! I made it (and modified it) in my first ball machine and first Instructable! please check it out!

sandroknexmaster (author)2014-11-08

Looks good!

Fission Chips (author)2014-11-05

Wow! This looks really cool and helpful in ball machines. Well done!

About This Instructable

453views

3favorites

License:

Bio: 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 ... More »
More by mathsboy314:Knex Programmable Rod v2Knex Eater AutomatonKnex Bi-Directional Cart
Add instructable to: