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Topic: How does wheel size affect speed??? (Read 2 times) previous topic - next topic

aarondc

To answer your OP: force will be higher but speed lower. Something to keep in mind when designing a battle bot - do you want speed for agility, or a slower bot with a bit more grunt?
Windows serial port monitor: Tellurium | Arduino serial port debugging library: DBG | Cusom LCD char generator | Technical questions will only be answered in forum threads

mech_eng

#11
Jul 01, 2013, 05:41 am Last Edit: Jul 01, 2013, 05:50 am by mech_eng Reason: 1
A larger tire will require more torque output from the motor, this will cause the motor to slow down for a given voltage which in turn increases power consumption by said motor.


How much the motor slows down will determine wether the bot will move faster or slower for a given wheel size.


EDIT:

In other words you can oversize a tire when trying to get more speed out of a bot and actually slow down the bot

Speed = diametertire*pi*angular_velocitytire

If angular_velocity decreases more than the diameter increases then speed will decrease, the other way around speed increases

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