I build a prototype this weekend to test some new geometry .... I'm trying to get a mid sized board - this one is 17" long and cut from a 1" x 6" cedar board and I used stainless hardware and threaded rods. (actual board is 7/8" and roughly 5 1/2")
I am trying a 45 degree angle, 30 degree runner bevel with the trailing edge left at 90 degrees both ways.
The 10.25" inside to inside measurement lines up the 45 degree angle pretty close if I stagger them all the way back like I did there.
These mid sized board should, "in theory" be optimized to pull hard and away out to the side of the boat.
The harder they pull, the tighter the line, and the better they seem to run alongside (instead of behind) the boat.
I put wing nuts on the rod on one side because what I want to try is opening up the outboard runner like maybe a 1/4" wider (and tightening the back rod) in the leading edge to see if that does anything.
Last edited by EZM; 04-26-2017 at 11:39 AM.
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