I didn't know how it would work but just gave it a try.I wondered what you were going to do for tires...
I was able to get some shop time today and tried my hand at making sprockets.
View attachment 149389
These are 10 tooth and 30 tooth sprockets 0.188 thick for #35 chain on the final drive.
Polished and installed.
View attachment 149390
View attachment 149391
More gearing to design for the internal parts.
Thanks for looking