Weight advantage: many conventional engines had to have heavy flywheels added to smooth out power impulses and reduce vibration.

They are tricycle affairs with a great heavy flywheel encased between the rear wheels.

Traditionally, speed was governed by using a heavy flywheel with a governor.

The heavy flywheel of an indoor bike, he said, "can help to improve the athlete's pedal mechanics."

Most woodchippers rely on energy stored in a heavy flywheel to do their work (although some use drums).

A heavy flywheel made for a big car- I had stinted on nothing.

It has an increased bore to 944cc and a heavier flywheel appropriate to its touring function.

He turned a switch and the heavy flywheel began to spin.

But a heavy flywheel can actually make it more difficult to use, and create an unsmooth pedaling motion.