What are some methods to have a Flex Traction wheel on drive? I know there’s hollowing the flex wheel out and putting gears in it, but what are some others?
You can simply put the necessary accessories in the flex wheels to run a normal 1/4" (or hs) shaft through like a wheel. After you do that, you can simply put a normal shaft insert into the 1/4" square bore and have it like a normal wheel. A word of caution though, the wheels might compress and lose grip as opposed to hollowing them out and having support from 60 tooth gears.
Here’s another method…
this is cursed beyond my comprehension