How to Put Ball Bearings in Lego Wheels

[MaxBrix]

After ages of staring at bits, I finally found a way to integrate some ball bearings into some lego wheels.

 

[grego18f]

Interesting setup. It sure spin much better.

I think this finding is more suited for RC vehicle but it is also its limitations because the torque transmitted relies on friction between the 3mm diam. axle and the bearing... 

I like it anyway 

[MaxBrix]

It's only good for a freewheel. On the front wheels of a rear-wheel drive. Like in this