I used a proffesional hairdryer. paint removing heat gun would also work.BWD wrote:Cool!
How did you heat them?
I have a pair of molded plastic fins I don't use that might become candidates for an experiment,,,
wouldn't this make the fins have a tendency to cavitate in higher speeds and thus lose any effect of having fins?FredBGG wrote:So this is one for the surfboard/fin techies out there.
I have been giving waterflow under my surfboards some thought.
The waterflow as you ride tends to run seperating somewhat as it goes from the tip towards the tail of the board due to the displacement as you ride when on the plane.
For this reason surfboard have more toe-in on the side fins.
This also increases turning reactivity and stability, but it increases drag.
Now lets think of the waterflow under the board in depth.
I am convinced that an inch or just a bit more the waterflow is more parralel to the centerline.
So..... for this I have heat deformmed a set of fins so that the deeper (in the water) part of the fins run almost parrallel to the centerline of the board, while the less deep part runs more parrallel to the fin box.
The result is a fin that has less toe-in on the tips of the fins that are deeper in the water.
My theory on this is that I will get a fin setup with less drag like a twin tip fin setup, but with the same turning ability of traditional toe-in fin setup.
Any thoughts anyone.......
This weekend I'll get to try them out.
That looks interesting. Too bad it cannot be inserted into a standard fin box.tautologies wrote: I'd say if you want to work with movable fins check out this:
http://www.blakestah.com/fins/truckexplain.html (you might have seen it already)
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