Sulky Sulky A sulky is a lightweight cart having two wheels and a seat for the driver only but usually without a body, generally pulled by horses or dogs, and is used for harness races. The term is also used for a light stroller, an arch mounted on wheels or crawler tracks, used in logging, or other types of vehicle having wheels and usually a seat for the driver, such as a plough, lister or cultivator. A sulky for horses is a lightweight two-wheeled, single-seat cart that is used as a form of rural transport in many parts of the world.
Horses in the Middle Ages their hindquarters. Harnessed in such a manner, horse teams could pull no more than 500 kg. The breastplate-style harness that had flat straps across the neck and chest of the animal, while useful for pulling light vehicles, was of little use for heavy work. These straps pressed against the horse's sterno-cephalicus muscle and trachea, which restricted breathing and reduced the pulling power of the horse. Two horses harnessed with a breastcollar harness were limited to pulling a combined total of about . In contrast, the horse collar rested on horses' shoulders and did not impede breathing. It allowed a horse