Horton's Shogun modular fans are available in various blade counts and configurations and are compatible with many viscous fan drives. Modular designs reduce the amount of tooling required, and blade segments are riveted to a center disk for customization. Fans are available in diameters from 16 to 22 in (406 to 559 mm) and in configurations of six to 10 equally spaced blades in clockwise and counterclockwise rotations. Staggered blade configurations are available. Shogun fans feature standard pilot sizes ranging from 1 to 5 in (25 to 127 mm) with maximum tip speed of 18,000 ft/min (5490 m/min). Manufacturing methods minimize deflection and reduce fan stress for improved efficiency and stable airflow of up to 14,000 ft³/min (400,000 L/min). The fans were designed to meet the cooling requirements of reduced-emissions engines and are appropriate for viscous fan drives on buses, RVs, agricultural vehicles, skid steers, and backhoes.