It is a heavy wheel mounted on the crank shaft.

Somewhere, far away, he heard the rumble of heavy wheels.

The heavy wheels rolled across the dead man's arm and head with a quick, sickening crunch.

Slowly the huge wagon was let down into the water, where its heavy wheels disappeared in gravel.

The astronaut closes the hatch and dogs it shut by turning a big heavy wheel.

All they required was firm ground for their heavy wheels - and that they had, now.

Located at the center of gravity of the ship was a small, heavy, metal wheel.

A sound of jangling horse-bells and heavy wheels passed up the street.

Engineering for this moment inevitably leads to a heavier wheel.

This trundled over on its two rows of heavy wheels and backed into position below.