Belt & Pully Calculator:
https://www.blocklayer.com/pulley-belt.aspx
The calculators below arent quite working yet. Someday!
Vehicle Speed / RPM / Wheel Diameter
Solve for Speed
Find out how fast your robot will move by entering the RPM’s of the motor, and the diameter of the wheels.
Solve for Motor RPM
Find what RPM motor you will need by entering the desired robot speed, and the diameter of the wheels you are using.
Solve for Wheel Diameter
Gear Ratios and Torque
Solve for RPM in gearbox ratio
Solve torque in gear reduction (not working yet)