Leaderboard

Thought I would add an update to this post in case others have issues with the CATS fin. After the first time the CATS fin skewed sideways for no reason, and I'm not sure I hit anything, I would have to re-center it. I would loosen the nut a little, swim under the boat and center the fin then tighten the nut. This would seem to happen at least once a year for the last couple of years. So after happening again last weekend we decided to take it apart and see if we could find a permanent fix. It turns out the shear key had sheared off and the CATS shaft was only being held by the clamping force since the first failure. Brass has a shear strength of 34,000psi and the key is 1/4"x1" so it took 8500#'s of shear to fail? Crazy!