Shim for F-One stab (wing foiling)
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These are shims for changing the angle of attack of F-One stabs.
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- Printables
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- Outdoor Sports
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- Creative Commons — Public Domain
These shims decrease the angle of attack of the stab so that it doesn't generate as much downforce. My understanding is that decreasing the angle of attack decreases drag but perhaps at the expense of stability.
I have a 1080 cm² front foil and a 275 cm² stab which is a bit big for the front foil (F-One recommends a 250 cm² stab for that size of front foil), so I added a 1 degree shim to decrease the downforce of the stab, making it a better match for the front foil.
To assemble the shim, simply unbolt your stab, add the shim between the stab and the fuselage, and bolt the stab back on.
I printed this solid out of PC Blend on a Bambu X1C with 0.08mm layers (to minimize the stepping due to the low angle).
Here's the Onshape model: https://cad.onshape.com/documents/78ef3ebe6d6fef9ef22052d1/w/6ce9b39bdcd5cb00da639d82/e/dc5fb8a6482f074f12330184?renderMode=0&uiState=679fa4b651c9cb512965379e