Did some searching and found this YouTube video of his boat.
http://www.youtube.
And the official page with plans. http://www.harrybry
Note the two skegs. These are required to turn the fin's wiggle into forward motion by resisting the boat from wiggling. You want to wiggle the tail, not the dog.
I see no reason why an electric motor couldn't drive an oscillating mechanism that would pull on the two cables like his design shows.
Or, my simpler idea, with a disc mounted on the motor, with an eccentric that would push/pull on a rigid pole mounted on one side of the fin as the disc turned.
--- In electricboats@
>
> Victor , I have the plans for the Harry Bryan "Thistle" which is a Fin boat.
> Its peddle powered , so its probably quite feasable to have a battery powered auxilery electric motor on it , possibly with a hand powered clutch to engage/disengage.
> Regards Rob J.
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