Technology / Resistance

Magnetic resistance, explained.

Understand the mechanism before you choose your setup.

Actual Fly-Fin reel photograph showing the open centre, grooved spool and winding grip.
Actual product photography

Resistance comes from the arrangement

Magnetic forces vary with position, spacing and pole orientation. The movable outer-ring magnets respond as the spool turns. The result is a changing torque and a pattern of small movements, rather than a fixed number determined only by how many magnets are installed.

Why more magnets is not a simple scale

Individual magnetic interactions can reinforce or partially offset one another around the ring. Chamber travel, contact, bearing friction and assembly tolerances also affect what you feel. Two arrangements with different magnet counts can therefore feel similar.

A hand-feel rating is useful for comparing setups, but it is not a measured torque curve. The Setup Lab’s estimates are a guide to exploration, not a laboratory certification.

What it means on the water

When the pull on the line decreases, spool inertia can keep the spool turning and create slack. A suitable resistance setting helps slow unwanted rotation. Matching the setting to your line handling and conditions remains essential.

For freely drifting techniques such as centerpin-style fishing, very low resistance may be preferred. Verify suitability and handling on the actual reel; a low-resistance setting does not by itself make the reel a dedicated centerpin model.

Find a useful reference

  1. Start with the factory configuration.
  2. Change one arrangement variable at a time, following the manual.
  3. Compare resistance, sound and feel at similar speeds.
  4. Check the assembled reel in controlled conditions before fishing.

Open the Magnetic Setup Lab ↗

A distinctive shell. A magnetic character you can make your own.

Explore the reel →
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