Excellent design, taking care of all dimensions and proportions. All printed pieces fit like a shoe.
Congratulations. I got the free model just to try. Now, I can not stop. I will buy the two wheeler, looks awesome.
Printed with Ender 3 v2. 15% infill as recommended.
Parts like switch and N20 motor fits excellent. And very important, the chain. Should be printed normal and some pieces must be printed in 102% as mentioned in the guide to avoid very tight chain. Easy printing and assembly. If the motor is rated at 3 volts with 30 RPM's, consider use only 1,5 volts to get 15 rpm's which is the optimum.