Let's Make Robots!

How to do belt-tracks

Just a quick tip on belt tracks, if you'd never did them before, and want to try :)

Simple; one wheel in each side follows a motor, rest is free to turn.

Motors can of course be in same end, but some times it is convenient to have them in each, and that is easy, see the picture.

Belts should always be a little loose, to minimize friction, yuo do not want tight straps.

Cool thing is, you can tun on a plate. And they make a nice, steady base.. and look awsome :)

Uncool thing is they tend to slow things down.

When turning, the tracks has to skid, that is rub over the surface. This is not that efficiant.

You want your tracks to be able to skid over your surface. On indoor systems you should chose hard / plastic tracks, or have a strong motor, or add some tape over the tracks to minimize drag.

  • Tip: When applying tape, make sure to put it on where the wheel is bending the track, a small piece at a time, then turn the wheel, put some more on. If you add tape on the long flat surfaces, a big piece at a time, it will make the tracks too tight.

Hardest thing may be to find the right tracks, but it starts to get easier - look in the components-section.

Get tracking!



Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.
I saw your yellow drum machine and I had to order the Treads like you did! I cannot wait to get started :)

They are cool, treads.. they sure are, give some spirit & edge to a bot! "here-I-come-on-my-treads"

/ Fritsl

You have asked the same question many places, please refrain from that - many people are trying to read every new written line in here :)


/ Fritsl

Nice. Here's mine. I do believe those are the same tracks/wheels. Mine uses servos modified for continuous rotation. The Mark II has a 5:2 gear up rather than the 1:1 chain drive. Not autonomous (yet!)



God created the integers; all else is the work of man - Leopold Kronecker

Oh yes, the same :)

Let me know if you need spare parts, I went over the top, and especially the wheels - I have not a bag, but a sack full! (Seriously; dump me a PM, I would be happy to ship some, I will never get to use them all even if I build robots the rest of my life :) 

And.. The rubber-tracks.. They have so much grip. When you get some weight on top, you will get a much better drive / turn if you tape them up.. Which is why I am using hard plastic for belt tracks only now! 

/ Fritsl

 How do you mean tape them up? Surely tape would reduce the grip? I can see how that would make them turn better, though!!

 God created the integers; all else is the work of man - Leopold Kronecker



/ Fritsl


Removed the space so the link will work... rubber treads make turning a nightmare. I had an old RC toy that was on treads and when I tried to turn it the motors had to kick up and got warm. The friction makes it hard to turn unless it is on dirt or gravel. For smaller robots that won't go outside, plastic is best to minimize the friction and save the motors and battery.

Where did you buy those plastic gears. I've been trying to fnd them locally, but can't. I've looked online, but haven't found anyone who has a good assortment. I need different sizes and worm gears for a robot I'm planning on doing after I get an easy one working.

I got bags full! Mail me. 

/ Fritsl