Boom Racing's Muscle Winch™ is a dedicated and fully waterproofed internal servo winch designed and engineered from the ground up, delivering strong pulling power and reliable performance for any R/C builds.

Free Spool Unit

A dual-trigger free-spool unit is integrated into the Muscle Winch™ for quick winch release. There are two ways to trigger the free spool mechanism; one by pressing the button on top of the servo winch, and the other by pulling the knob on the bottom. This dual-trigger design makes the free-spool unit accessible from both sides of the servo winch, which is a major advantage when designing the layout of your servo winch placement. To release the rope, press the button on top of the Muscle Winch™ or pull the knob from the bottom. This will disengage the locking mechanism allowing you to pull the rope out. Once you have reached the desired length, then release either the button or knob and continue pulling on the rope until you hear a "click" sound. The locking mechanism will re-engage and you are ready to winch.

• To avoid damaging the Muscle Winch, remove the hook from the rope if it is already attached before setting up the radio.
• The battery must be disconnected from the ESC (if ESC has a power switch) and Muscle Winch when not in use to prevent damage to the winch and battery. Do not connect the winch directly to the battery balance port. Damages caused by the above action(s) will void the warranty.