When Bob became frustrated with the way his old jet fins were not only moving him through the water, but how they were treating his body he began his quest for a better fin.
The first thing he did was make a series of drawings of a human leg as it changes during a normal flutter kick cycle.
He also made an articulated paper cut out that he connected the foot to the calf, calf to the quadriceps to better visualize the workings of our kicking muscles.
After studying the process he made Force Fins by taking the foot out of the equation. The Force Fin open foot pocket leverages power from your strongest kicking muscles, the quadriceps not the smaller muscles in you feet and calves.
I was drawn to Force Fin decades ago due to the shape of the blades. It just does not look like a dive fin (or what I was led to believe) and I had to try it out. After studying the foot Bob Evans studied Nature and this is where he drew some of his inspiration for the shape of the Force Fin. There are no flat fins in nature and it does not make sense to try and use such a shape to propel you through the water? Right?
I would like to show you some photos or divers trying to “push themselves” not propel, but push themselves through the water using Terrestris Fins. Bob had about a hundred photos he wanted me to post up from his recent dive trip, but I shortened it to four.
As most people are still using Terrestris Fins you can observe this on almost any dive site or training location where divers can be found. It is the wiggle woogle strain bain cramp inducing fins struggling through a kick cycle that we think, frankly are discouraging divers all over the world to stay with diving.
It is clear to see the fin on the left is pointed straight down as a result of the closed foot pocket there fore putting all the strain on the ankle and forcing the fin blade into a non propulsive angle during the down / power stroke in a two kick cycle motion. I can remember in my days before my Force Fins I would have to put up with this constant strain on my ankles and calves through out the dive. The divers fin on his right leg is at the end of the up/recovery stroke and clearly looks like it has been forced out to a perfect perpendicular angle in reference to the other fin blade. This happens because the strain is to much for the diver as well as the shape of the blade results in pushing water off to the side of the blade.
Bob captured the same moment in time with another diver down the reef.
With this diver you can also see the muscles tense and ready for combat with more strain, drag, and resistance to moving the blade through the water. The fin on the right leg again is forced into a perpendicular angle to the other blade again. The diver is under attack from his own set of dive fins. I asked Bob if he shot any pictures of the Marine life he said he did, but this photo he took while tailing this diver and observing the wooble and shutter of the fins moving through the water.
Divers will naturally let the fin spill out and wooble because they do not want to subject themselves to the constant strain and stress that their ankles and calves, and knees are up against when using Terrestris Fins.
Notice the ball of his strained calve muscle.
Are you twisted or are you free?
The first thing he did was make a series of drawings of a human leg as it changes during a normal flutter kick cycle.
He also made an articulated paper cut out that he connected the foot to the calf, calf to the quadriceps to better visualize the workings of our kicking muscles.
After studying the process he made Force Fins by taking the foot out of the equation. The Force Fin open foot pocket leverages power from your strongest kicking muscles, the quadriceps not the smaller muscles in you feet and calves.
I was drawn to Force Fin decades ago due to the shape of the blades. It just does not look like a dive fin (or what I was led to believe) and I had to try it out. After studying the foot Bob Evans studied Nature and this is where he drew some of his inspiration for the shape of the Force Fin. There are no flat fins in nature and it does not make sense to try and use such a shape to propel you through the water? Right?
I would like to show you some photos or divers trying to “push themselves” not propel, but push themselves through the water using Terrestris Fins. Bob had about a hundred photos he wanted me to post up from his recent dive trip, but I shortened it to four.
As most people are still using Terrestris Fins you can observe this on almost any dive site or training location where divers can be found. It is the wiggle woogle strain bain cramp inducing fins struggling through a kick cycle that we think, frankly are discouraging divers all over the world to stay with diving.
It is clear to see the fin on the left is pointed straight down as a result of the closed foot pocket there fore putting all the strain on the ankle and forcing the fin blade into a non propulsive angle during the down / power stroke in a two kick cycle motion. I can remember in my days before my Force Fins I would have to put up with this constant strain on my ankles and calves through out the dive. The divers fin on his right leg is at the end of the up/recovery stroke and clearly looks like it has been forced out to a perfect perpendicular angle in reference to the other fin blade. This happens because the strain is to much for the diver as well as the shape of the blade results in pushing water off to the side of the blade.
Bob captured the same moment in time with another diver down the reef.
With this diver you can also see the muscles tense and ready for combat with more strain, drag, and resistance to moving the blade through the water. The fin on the right leg again is forced into a perpendicular angle to the other blade again. The diver is under attack from his own set of dive fins. I asked Bob if he shot any pictures of the Marine life he said he did, but this photo he took while tailing this diver and observing the wooble and shutter of the fins moving through the water.
Divers will naturally let the fin spill out and wooble because they do not want to subject themselves to the constant strain and stress that their ankles and calves, and knees are up against when using Terrestris Fins.
Notice the ball of his strained calve muscle.
Are you twisted or are you free?
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