How much torgue to turn a wheel

Am building an unmanned ground vehicle.its a 4 wheel bot.I want to use one motor for each wheel an need help in calculating the torque required by each motor so the bot can move at a max speed of 5mph.the total weight of bot is 60kg.no gears are used and the motors directly connected to wheels.the...

Hi experts building a 4 wheeled cart to move materials and want to move cart with 2 dc motors driving two wheels. the 2 other wheels will be casters.I would like to be able to drive each motor seperatly so I can steer the drive wheels with power and possible running power driven wheel in oppsite...

When I was Mowing my yard yesterday the wheel was kind of hard. After mowing for over 30 min., I was trying to turn around a tree to the left and I heard a click. After that I can turn the wheel to the left, but the mower will not. Please Help, Martha

My 1998 Dodge Ram 1500 the steering wheel spins freely(zero friction)and the wheels do not turn.This happened the day after I towed a trailer not while I was driving(thankfully). The steering column and the linkage in the engine compartment are all OK. I do believe it is the knuckle at the tilt...

I have a 2003 Ford Focus. My ignition lock wouldn't turn, thus not allowing my steering wheel to turn. I drilled out the ignition lock cylinder and the steering wheel was able to be turned. Now, the ignition cylinder is still out of the vehicle and the steering wheel is still locked. I'm not...