14cm Annular Weed fin for speed sailing
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14cm Annular weed fin for speed windsurfing
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- Outdoor Sports
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This is similar to previous weed fin but instead of the airfoil increasing around the diameter this fin decreases chord length. Also add bulbs on tips to reduce tip turbulence. Annular fins generate more lift for less draft so in theory they may travel faster in weed as less drag. Also should allow light wind sailing in shallow water which is quite a few areas locally for me.
Anyone trying to make this might struggle as difficult to bend stainless steel to the exact diameter….better to bend the steel than measure and make the model. Hopefully this just shows to to construct a 3D printed fin that works. Technique relies on crushing all the print layers together to make a robust fin. A layer of fibre glass is added for strength
Made this a few months ago but been no wind to test…only chucked it on the fin spinner so far…..sitting patiently in the van waiting…
Update, finally got some wind Oct 2, 2023. Video of its maiden voyage here (with a lot of padding of proper sailors)