Portable water bike - GIF

[lest21]

I guess if all you are wanting to do is combine a little cardio with your swimming then this might be ok. the motion to peddle the propeller creates a lot of disruption in the water requiring you to expend an excessive amount of energy to propel yourself through the water. If you are wanting to actually go somewhere while conserving energy, then get yourself a pair of US Divers Jet or Rocket fins and learn to use your ankles with a slight scissoring action with your legs.

Those were the fins to have back in the day, still have a pair in my old dive bag. Probably just rubber mush by now.

[Frank S]

Those were the fins to have back in the day, still have a pair in my old dive bag. Probably just rubber mush by now.

we were loading up to take the work boat out to a rig for a routine, "NEVER IS", underwater structure inspection, when this new kid shows up and asks for help with his gear. we left him on shore.

[awright]

Interesting that a post named, "Portable Water Bike" just shows flashes of swimmers surging through the water but virtually no views of the "Portable Water Bike" they are featuring. One flash actually just shows the swimmer in yellow close up with the feet out of view until the final millisecond when the device would have come into view but the segment terminates.

[Toolmaker51]

Interesting that a post named, "Portable Water Bike" just shows flashes of swimmers surging through the water but virtually no views of the "Portable Water Bike" they are featuring. One flash actually just shows the swimmer in yellow close up with the feet out of view until the final millisecond when the device would have come into view but the segment terminates.

Likely the video provider gave barest glimpses to avert onslaught of patent infringements. Short of a battery powered propeller, vented fins are still the way to make distance.

[Toolmaker51]

Interesting that a post named, "Portable Water Bike" just shows flashes of swimmers surging through the water but virtually no views of the "Portable Water Bike" they are featuring. One flash actually just shows the swimmer in yellow close up with the feet out of view until the final millisecond when the device would have come into view but the segment terminates.

Likely the video provider gave barest glimpses to avert onslaught of patent infringements. Short of a battery powered propeller, vented fins are still the way to make distance.
editing - - - I'm surprised a design incorporating a Kort nozzle, maybe even a venturi eductor hasn't been incorporated for a self powered device.