Hi! I just made an account to seek help for the project I'm planning on. I've been spending quite a time on finding the right motor with right torque and dimensions.
So I'm planning on a project with spherical wheels, each wheel controlled with one stepper motor and a dc motor.
Basically, I'll have 4 dc motors and 4 stepper motors controlling each wheels individually. But here's the problem. Just like the images I've attached, I have limited room for dc motors, so I was first finding for right angle gear(or worm gear) motors. However, most of them were too big and heavy for my project.
Wheel weight = 100g Wheel axis radius = 2" Wheel diameter = 6" Vehicle weight = Approx 30lbs. Speed/Acceleration wanted = 15mph in 5 seconds.
I've looked for all different kind of motors but couldn't find the right one since I can't calculate the right torque needed. I want the vehicle to be at least 70rpm(or 15mph in speed), so that's another factor I need to consider.
Can anybody help me calculate the torque for me? Sorry if the question is too confusing, I'm a terrible writer as English is not my primary language.
Additionally, it would be great if you can let me know how to calculate the torque needed for each stepper motors too!