Many of the early cars were actually meant for children, using small single-cylinder engines.

It had a 5 hp single-cylinder engine and only three wheels.

The car was a 4-seater powered by a 823cc single-cylinder engine mounted under the front seat.

The Mach 1, with its 250cc single-cylinder engine, was the fastest 250 road bike at the time.

Rutenber studied the trade of mechanics and, about 1892, built a single-cylinder engine.

It had a unit body and a four-stroke single-cylinder engine.

There's something not quite serious about single-cylinder engines in road bikes.

Some of the smaller open wheel racers even have classes for single-cylinder engines.

Some motorcycles with strong single-cylinder engines are available today.

Each pulse of the single-cylinder engine shook the 585-pound vehicle.