Magnetic Brake
From The Angler's Dictionary — your encyclopedia of fishing rods, reels, and tackle
A magnetic brake is a spool-speed control system in a baitcasting reel that uses magnets positioned near the spool to slow its rotation during a cast. As the aluminum or magnetic spool spins, it moves through the magnetic field, which induces eddy currents that create resistance. This electromagnetic braking slows the spool without any physical contact between parts, resulting in a very consistent and smooth braking force.
The key advantage of magnetic brakes is convenience. They are adjusted via an external dial on the side plate — no need to open the reel and toggle pins like centrifugal systems. Turning the dial increases or decreases the distance between the magnets and the spool, changing the braking intensity. This makes on-the-water adjustments quick and easy when switching between lure weights or fighting changing wind conditions.
Magnetic brakes provide constant resistance throughout the entire cast, unlike centrifugal brakes that taper off as the spool slows. This characteristic gives magnetic systems a reputation for being slightly more forgiving for beginners, since the consistent braking reduces backlash risk throughout the full cast arc. However, some experienced anglers feel that magnetic brakes can sacrifice a small amount of casting distance compared to well-tuned centrifugal systems because the constant braking restricts the spool slightly during the final phase of the cast when the lure is decelerating. Abu Garcia's MagTrax system is a widely used magnetic brake design.