Original source: Graham Ezzy
This video from Graham Ezzy covered a lot of ground. Streamed.News selected 1 key moment and summarises them here. Everything below links directly to the timestamp in the original video.
Understanding fin dynamics is crucial for windsurfers aiming to optimize board performance for wave riding, especially when seeking more responsive turning and rail engagement.
Fin Selection for Thruster Boards Emphasizes Area Over Depth
For thruster boards, optimal fin setup involves careful consideration of both main and side fin sizes, with fin area often being more critical than depth alone. Windsurfing expert Graham Ezzy notes that side fins typically range around 10 cm, but a 10 cm fin with a wide base provides more area than a longer 11 cm fin with a narrow base. Asymmetric fins might allow for larger main fins without compromising performance.
Adjusting fin size, such as reducing a large center fin while keeping side fins consistent, can maintain board performance. Brands like K4 offer various fin profiles, where models like the AIS have less area for their depth compared to the Ezies or Scorchers, demonstrating the importance of matching fin shape and area to desired wave-riding characteristics.
"We're often talking about the depth of the fins, but the area of the fins is actually very important."
Summarised from Graham Ezzy · 41:42. All credit belongs to the original creators. Windsurfing Class summarises publicly available video content.
