A hydrostatic transmission is a type of powertrain that uses pressurized hydraulic fluid to provide motive force. It is often used in mobile equipment, where there are advantages over other types of transmissions, such as mechanical or electrical transmissions.
There are several reasons why a hydrostatic transmission may be better in a lawn mower than other types of transmissions. One reason is that it can provide infinitely variable speed control, which can be beneficial when mowing around obstacles or trying to achieve a precise cut. Additionally, hydrostatic transmissions are often more efficient than other types of transmissions, meaning they require less power to operate and generate less heat. Finally, hydrostatic transmissions typically have lower maintenance requirements than other types of transmissions, making them ideal for use in lawn mowers where regular maintenance may be difficult or impractical.