I would take the shaft and coupling to a reputable prop/shaft shop and have them properly mate the shaft and coupling and drill proper depressions for the set screws.
I did that when I re-powered Touche' and bought a new shaft as part of the upgrade. Did it with the boat in the water. If you're brave, you can do it without a haul out. My diver buddy has a collection of "spare" shafts. He will loosen the packing, pull the shaft to be worked on, and temporarily replace it with one of his "spares". Dennis C. Touche' 35-1 #83 Mandeville, LA On Tue, Sep 20, 2016 at 3:17 PM, William Walker via CnC-List < cnc-list@cnc-list.com> wrote: > Some may remember that around mid summer I posted that my prop shaft had > pulled out of coupling. Mine has two bolts which go through coupling and > into small dimples drilled into shaft. They were wired in and over time > the ends had worn off and allowed shaft to pull out when reversed was > applied to prop. Some on list checked and had similar problems. I was > surprised so many > Well, on haul out I discover it has happened again, with the new bolts. > Haven't pulled them yet to see, but shaft pulled enough to show key and the > dimples, still in place. > No excessive vibration or anything. > Bolts still appear tight. > Thinking maybe of going with two set screws in each hole, one snugged, > another on top. > Love to hear thoughts from listers with some experience. > Bill Walker > Evening Star > CNC 36 > Pentwater, Michigan > > _______________________________________________ > > This list is supported by the generous donations of our members. If you > like what we do, please help us pay for our costs by donating. All > Contributions are greatly appreciated! > >
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