I’m working on optimizing a drive train for speed, but the system will also need to carry a significant amount of weight. I want to understand what factors, such as motor selection, gearing, wheel choice, or weight distribution, are critical for maintaining speed under load. Are there specific design strategies, materials, or components that could help achieve this balance? Looking forward to your insights!
I’m not my teams main builder, but from what I know, make sure you choose the right gear ratio. If your just getting started, it doesn’t have to be a complex one, just one that has the right amount of torque and speed, which can carry your robot well. Our robot is very heavy, so we use a gear ratio with more torque, for a smoother drive. Also make sure your robot is stable and built well (I recommend using triangle pieces to secure different parts). Try and make the weight distribution even between the front, middle, and back, and combined with a stable chassis, the robot will drive smooth. Hopefully someone else gives a better answer, but these are the tips I have to offer.
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This sums it up pretty well, I’d recommend 2:1 for 2 motors or 3:2 or a 2.5:1 (maybe 2:1) for 4 motors.
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and what is the best way to make a drivetrain with tooth gear(gear train) or with tooth Sprocket and chain link?
Chain has slop, I’d recommend gears
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thank you so much 
