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Frank,
Here are a few videos I found of mechanical fish such as we
were discussing.
At some point just for fun, I might build a rig to try out on
my canoe or a Jon boat. From a top view:
B= body of the canoe
P= the powered section moved left and right
F= fin
x= hinges
BBBBBBBBBBBBBBBBBBBBBBxPPPPPPxFFFFFFFF
When power is applied to P to swing it left and right, F
will swing in the opposite direction (by the force of the water) to
provide propulsion from the sculling motion. P will move through fewer
degrees of arc than F. The range of motion for P is determined by the
configuration of the push/pull rods which power it. The range of motion
for F is determined by stops on the hinges.
I have several other projects with higher priority, but maybe
one of these days...
Jim
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