Q) about building a toy with belt drive system

Hello,

I recently have an issue for building a toy with belt drive system but I don’t have any experience yet. I need your helps to solve this. I found you have a proper DC motor, ~9,000 rpm for the system. The 1 inch wheel in a toy should be rotated based on the belt drive system.

Q1) Which is prefered if the rotational energy of DC moter is transferred to the wheel? bearing on wheel or gear on wheel?

Q2) Do you have any kits for the belt drive system?

Thank you for your time and sharing your opinions.

Hyun