Webber Extractors Set

Webber Extractors SetFin flex has been misinterpreted for decades, and it is my thinking that there is nothing amazing happening when the fin returns to being straight after it has flexed and bent during the turn. Its whats happening during the turn that counts, not at the end of the turn. The reason why this misinterpretation has happened at all is because the net result of the turn (with a well designed flexing fin) is a burst of speed out of the turn, and so no wonder

It’s what’s happening during the turn that counts

When you see the video of these things flexing just look at the way the flat inside surface becomes a beautiful curve

Webber Transformers Set

Too much flex and the fin will curve too tightly and water will escape around that tight curve and there will be a big loss of drive and hold

even in tight turns

The hold increases because the chance of cavitation is radically reduced

The speed through the turn is enhanced significantly when a larger fin with more rake and depth can bend to the arc of the turn

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and it is my thinking that there is nothing amazing happening when the fin returns to being straight after it has flexed and bent during the turn

The plan-shape is as key to the level of flex as is the thickness of the fin from base to tip

and so when you increase the depth of the fin by let’s see 20% then you are adding that 20% in the best part of the wave face deeper inside it

and so no wonder earlier surfboard designers thought that the return movement of the fin from curved to straight