Rolair FC229MK103 29 Gallon Wheeled Electric Air CompressorIf you want the capacity of a stationary compressor but still need portability, this is the move. The FC229MK103 is a 29 gallon, belt driven, 2 HP electric compressor built around Rolairs Italian engineered MK103 pump. This isnt a small, high speed direct drive unit. This is a slow spinning, belt driven setup designed to work. The pump runs at 900 RPM while the motor spins at 3450 RPM. That belt reduction matters. Slower pump speed means less heat,