I’ve been building on our new bot, we’ve got a few older 393 motors as well as a few newer ones - I noticed that the high speed gears that come packaged with the different motors looks a little bit different. Would it be ok for me to run these motors linked together?
Make a test bench that looks like a hoverboard (the one with 2 wheels) and power one wheel with the new gears, and the other wheel with the old gears. If it turns, then one is a different ratio. OR, you could just count the teeth on each gear and call it a day.