Baller Gloersen Posted August 1, 2010 Baller Share Posted August 1, 2010 Plagued with inconsistent Gates/1B & unpredictable 2Bâ€™s finally determined that the fin keeps moving; gets deeper and also a tad longer.Â Â Tuned it to 2.506/6.880/.735/7 for last Saturdayâ€™s tournament. Skied 5 sets since, somewhat inconsistent in getting a good rhythm, measured fin at 2.515/6.883/.732 Â This movement had been noted about a month ago, thought the problem was due to an inadequate diameter of the bore recessed into the halves of the fin block to permit the DFT set screw unimpeded travel. Once this was determined, the set screw was used to set the fin at desired DFT, the clamp made snug, then the set screw backed all the way out from the clamping halves to permit final tightening of the fin clampÂ & unimpeded fixation of the fin tabs.Â Â Then a final re-measure to verify chosen settings. Â Turns out this was not the only problem. The right half (looking from top) of the fin block was improperly machined, not only the bored out recess for the DFT set screw was inadequate, so are the two recesses for the two top set screw housings on the left half of the clamp. Just visually inspecting it side by side with a new fin clamp on a club memberâ€™s new RCX; one can see at least a millimeter less radius in the bored out recesses. This of course was leading the two clamping halves tightening against themselves at the set screw housings and thus inadequate fixation of the fin tabs. Â Switched to a fluid motion nylon block until the D3 fin clamp (03/10 Z7 ST) can be replaced. Â In conclusion: a good reason to become proficient in fin tuning and reproducible measuring techniques; identify a potential & remedial source of inconsistent skiing. In all likelihood there may be quite a few defective fin clamp assemblies out there.Â Link to comment Share on other sites More sharing options...
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!Register a new account
Already have an account? Sign in here.Sign In Now