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Guide for SUP Fins

Guide för SUP fenor

Guide for SUP Fins

With the choice of fin, you can significantly influence the properties of the board. The choice of fin is partly about the basic properties that you want to modify, such as stability and resistance. But also the behavior in special conditions can be changed, such as neutral conditions in crosswinds, short turning radius for turns, or protection against seaweed. Many parameters can work together for one characteristic but give varying results for other characteristics. For example, both length and surface area affect course stability, but resistance is affected mostly by length and only to a small extent by surface area.

  • More length gives more course stability
  • More length gives more stability
  • less length gives less resistance
  • Minor length gives a smaller risk of grounding

  • More surface provides more course stability
  • More surface provides more stability
  • Smaller surface provides better turning radius
  • smaller surface makes the board relate more neutrally in side winds

  • Straight shape provides more responsiveness (turns)
  • backward inclined shape is better against seagrass
  • backward inclined form protects better at grounding

  • A thinner fin gives less resistance

Other factors
  • Heavy and stronger paddlers need bigger fins
  • the further forward fin-box, the larger fin is needed for the same traction
Christian Dietz

Christian Dietz



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