Medium rate

Steel 50-tooth spur gear

This new ESC increases the maximum input voltage to 4s

Powerhobby 15

Powerhobby 4028 ESC Cooling Fan Hobbywing MAX6 MAX8 Arrma 6S Firma Black Vorza Parts Medium ratePowerhobby 4028 ESC Cooling Fan 21000RPM Fits hobbywing MAX6 MAX8 Arrma 6S Firma 150A Description The PowerHobby 4028 High Speed ESC Cooling Fan is designed to provide powerful airflow for compatible large scale RC electronic speed controls. The ball bearing fan operates at approximately 21,000 RPM to help reduce ESC temperatures during extended runs, speed runs, aggressive driving, and other demanding conditions. It supports a wide operating range of