When the going gets hot, viscous fan drives get going

The VMaster directly controlled viscous fan drive from Horton is managed from the electronic control module on your equipment’s engine to give you extra cooling power in high-heat applications. A reduced idle speed frees up horsepower and conserves fuel while providing continual airflow through the heat exchangers. The VMaster fan drive offers three control configurations including on/off, pulse width modulation and open loop and pulse width modulation with integrated fan-speed feedback. The pulse-width modulation systems operate independent of engine speed, giving you variable speed control and precision cooling.