Quote:
Originally Posted by harald johnson
Hey guys, I couldn't resist. Howz this for a big chunk cut out? ;-) See below pic....
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Interesting, I'll need to add all these photos to the weird collection too
I am afraid though that this last design cannot be really efficient, because you can't really get the blade into the right angle of attack in the upward and downward kick. The angle seem to be pretty constant and the blade seems to bend only from the foot-pocket to the extremity, hence in practically 90 degrees to the swimming direction (well, it is little bit less due to the angle of the demi-lune - around 60 degrees at the extremity). On my mind, it does not really help with the propulsion a lot.
Well, of course, I believe that you can swim with it, but I am persuaded the efficiency is far from the ideal. On the other hand, on my mind the design of current monofins are certainly not ideal either. Lunocet may be a good way to go - the blade halves are actively inclined against the kick, and I believe if properly tuned up and with a trained kick, they may be more efficient. Time will show.
In our club, we have an university professor working in department of physics of fluids. We already spoke that he could let his students research some freediving fins related topics, we just did not get yet to define the jobs. Modeling and comparing different shapes of fins like these ones may be one possibility.
