[Public-List] cutlass housing replacement

[americo silva]

Im wondering why they cut into the threads in the first place

On Thu., Jan. 21, 2021, 11:59 p.m. George Dinwiddie via Public-List, <
public-list at lists.alberg30.org> wrote:

> In my experience, it’s easier to seal the threads than the tube to the
> hull. I suspect that if the threads weren’t sealed, my boat would have sunk
> before I noticed that the stern tube had rotated since I had replaced the
> hose clamps. (The clamp screws were somewhat inaccessible.)
>
> George
>
> Sent from a primitive pocket computer. Please assume all errors are due to
> that.
>
> > On Jan 21, 2021, at 18:47, Clay Pass via Public-List <
> public-list at lists.alberg30.org> wrote:
> >
> > I thought in prior discussions we had agreed that water within (inside)
> the
> > stern tube was captured by the stuffing box/packing nut on the other end
> > from entering the boat.  Water that leaks through the threads at the
> > cutlass housing to the outside of the tube will be stopped from entering
> > the boat by the complete seal of the stern tube to the hull (outside of
> the
> > tube to thru hole in hull) and also the seal of the cutlass bearing
> housing
> > to the hull.  In any case, I had a housing scored just like this and had
> no
> > issues with it after caulking the whole interface with 3M 4000 and I
> > believe I caulked the threads with the same just for good measure.  As
> long
> > as you can screw the housing on the stern tube without it turning or
> > breaking the seal and also use plenty of caulk to seal the
> > housing/hull/stern tube interface, you should not have any issues.  I
> > haven't had any with mine.
> >
> > Clay
> > #449 Seeing Deep
> >
> > On Sun, Jan 17, 2021 at 1:36 PM Greg Wallis via Public-List <
> > public-list at lists.alberg30.org> wrote:
> >
> >> Hi,
> >>
> >> I am in process of replacing the cutlass bearing,
> >>
> >> Here's a link to my poor cutlass bearing housing.  Notice the ruined
> pipe
> >> threads.
> >> https://drive.google.com/file/d/198AJ_rMD7Lx8QrdksGXhIbeRR6_FPS9t/view
> >>
> >> I took the cutlass bearing housing to a shop to have the new bearing
> >> pressed in, and they proceeded to overcut the old bearing and cut two
> deep
> >> groves lengthwise through the female pipe threads of the cutlass
> housing.
> >> These threads connect the cutlass bearing housing to the stern tube.  So
> >> now the threads are not going to be watertight.  I think that the
> threads
> >> will still function, but they will most certainly leak.
> >>
> >> I am hoping somebody has an identical alberg30 cutlass bearing housing
> that
> >> they'd be willing to sell to me.  This would be the best.
> >>
> >> If I can't find another one, I am considering to allow this fitting to
> leak
> >> between the stern tube and the cutlass bearing housing.  I think I'd
> just
> >> need to ensure that there is plenty of sealant around the outside of
> stern
> >> tube where it exits the hull.  I guess some water would accumulate in
> that
> >> space and wouldn't really have anywhere to go.
> >>
> >> I would also put a generous layer of sealant on the threads themselves,
> to
> >> hopefully prevent it from leaking at all.   Doing this is going to make
> it
> >> very difficult to remove the cutlass bearing housing in the future.
> >>
> >> If you have any suggestions or tricks to make these threads watertight
> >> again, please do let me know.  How about a thread sealant that would
> solve
> >> this problem and still be possible to unscrew in the future?
> >>
> >> Ideally though, if you have a cutlass bearing housing you'd be willing
> to
> >> part with, please let me know!
> >>
> >> Thanks
> >> Greg
> >> hull #165
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