Pololu Micro Metal Gear Motor and Dagu Wheels

Help & Support Robot Parts
1

I am considering buying these:
Dagu All Terrain Wheels Four-Pack
robotshop.com/ca/productinfo.aspx?pc=RB-Dag-02&lang=en-US
Pololu 150:1 Micro Metal Gearmotor
robotshop.com/ca/pololu-150-to-1-micro-gear-motor-hp.html

The motor is rated at 6V, but I would like to use a 7.4V Lithium Ion Battery (up to 8.4V). In the long run, would it work properly by limiting PWM duty that would connect to the battery directly (up to 8.4V pulse amplitude)?

Also, do the wheels come with these hubs or does it have to be purchased separately:
robotshop.com/ca/dagu-nickel-plated-brass-hubs-four-pack-4mm-shaft.html

2

Hi gcp6ca,

Welcome to the RobotShop Forum. The motor you choose is quite small for the wheels - you may want to check again to be sure it’s what you want. PWM would not limit the voltage. You can run a 6V motor a bit higher than its specs; 6V is the nominal voltage at which the system will operate at highest efficiency. If you run the motor at 7.4V, it may reduce the life span of the motor by some small fraction. The hubs are included with the wheels.

Hope this helps,