I use it 4 wheel line follower, they track the route great. And stackable design is very usefull. I tried 3-3 wheels at each side, but unfortunately it made a little weight (traction and manuevering is increased where as)

I am using them at my minisumo (as usual). All opponent robots defeated easily. They hold the ground very well. And don't need to use any extra coupler, hub etc.. nice. I clean with alchol and voila! very slick traction.

This ebook opens a new page in my sumo robots. That made me notice many many mistakes. Getting help from a JSumo, for new projects also priceless.

Recommended!

When will be restocked? I bought last piece months ago and using. For my new project I want to buy more but still waiting. Please be fast Jsumo :)

I won Robofest 2016 Robot competition 2nd place with that chassis. Recommended to all project makers.

I liked the versatility. Gives low COG to robot. Only suggestion is why you don't designing similar chassis for 5 sensors?!

Better price than Pololu. We use it for line follower and mini sumo robots.

I am seeing this gear bundle at lots of Mexican robots, stop selling! :)

Very lightweight for sumo projects. Before this model, I was using nearly 2 times heavy gears (1 module) but with this combination robot's response time decreased (which is better) and no more sound like tractor, jejeje.