Wheels turn on axles.

The wheel began to turn.

Let's fasten a spoke on the inner end of each axle.

The wheels turned around.

Let's put this bar on a pin, so that it can swing in either direction.

The differential looks complicated, but one we understand its principle, it is amazingly simple.

Well, he needs friction to start riding.

When we stop one wheel, the cross bars will continue to push the spokes of the free wheel around.

I can't tell you how wonderful this is.

It stands for Intelligent Mobility Platform with Actuated Spoke System.

You need to turn the Tsapa.

Now, the two Rovers, each one of them is, kind of, getting old.

And then we touch down, we're actually on the wheels, we're ready to drive, day one.

Each time you step on the pedal, the wheel turns once.

At 6 o'clock in the morning when the alarm sets off, the Clocky also starts running in the room.

A unicycle has only one wheel.

When it comes to your bicycle, it is a little more complicated.

And this is the space probe Cassini pirouetting through the ice rings of Saturn.

The sound you just heard is the landing gear locking into place.

The problem is no matter how small this constant is over here,

So this fellow is bringing a flour grinding machine on a two wheeler.

He's interested in playing football.

The damn wheels are locked.

What the internal volume will revolve like.

She got us a new wheel?

Targets are under the train wheels.

The front wheel plays an important role in two wheeled vehicles moving without falling over.

Here, let me introduce you to Sam Haber.

300. Gear coming.

Gear down.

How about the tricycle?

What's with the tricycle?

So that by turning the spoke, we can turn each wheel separately.

Notice that this support is not locked to the axle it turns freely.

A grown man has a tricycle his whole life?

You get her wheels down the shop.

A 'Clocky' was a a clock invented by one of the students in the Media lab, and it's a clock that has 2 big wheels that start running at slightly different speeds.

We got rid of all the useless things like engines and transmissions.

The outsides wheels must spin faster than the wheels on the inside, because they have a greater distance to travel in the same lap of time.

One of the car wheels came off.

An automobile has four wheels.

So the one wheel drive was soon out of things.

For most small wheeled robots, they use a method called differential steering where the left and right wheel turns the opposite direction.

Metal eagle.

The vehicle is actually modeled as a system with 2 non steerable wheels and 2 steerable wheels.