KYOSHO Mini-Z Racer MR-03 with belt transmission

This is a brief demonstration of my KYOSHO Mini-Z Racer MR-03 where I made an experimental modification to the motor-differential transmission in order to eliminate the nasty dry gear noise by putting on a small belt. I've been carrying this idea for quite a while and managed to find and mount the required parts to set this up. It's showing a remarkable potential for the first test drives.

I am aware that my car shows a pretty bad wheel imbalance. Gotta fix this somehow!

Category:

Autos & Vehicles

Tags:

• kyosho
• mini
• racer
• mr
• 03
• belt
• transmission
• rc

[andersonquinn23]

Wouldn't a belt system cause more friction making it go slower?

[Bandicoot803]

@andersonquinn23 It all depends on the bearing friction, transmission ratio, belt tension and belt type (V-belt or flat). Of course, if you take a closer look at the motor bearing, you might have noticed that I also replaced the sleeve bearings by a set of ball bearing on both ends to greatly reduce friction - with success.

[doug01n2]

How did you managed the rotation problem? with the original gear transmission, when the motor spins counter-clock, you get a clock movement in the wheel. With the belt transmission, both spins clock movement. All you did was change the wires? How does it brakes? Thanks!