[Public-List] stern tube question

[Mike Lehman]

The cutlass bearing housing dictates the tube alignment.  If the shaft is
not centered in the tube, the the engine is out of alignment. It is highly
unlikely to bend a shaft that is 7/8" as short as the A30 shaft...there
isn't enough leverage.

On Thu, Jan 31, 2019, 4:31 PM David Fay via Public-List <
public-list at lists.alberg30.org wrote:

> Clay,
>
> Interesting that you mention shaft alignment because, when I removed my
> bearing housing, my shaft was not centered in the stern tube. I'm about to
> tackle that problem. If it is off-center but doesn't wobble, I guess I have
> an alignment problem. If it does wobble, either the shaft is bent or the
> shaft is not aligned properly with the gearbox flange.
>
> I think the problem began when I had a bad rope wrap around the prop shaft
> last fall in a squall. It didn't stop the engine but the rope melted from
> the heat. Since the rope was attached to the bow of the boat (a long
> unstowed bow line), it could have exerted some sideways force on the prop
> shaft when the rope tightented. I doubt it would be enough to bend a 7/8"
> stainless steel shaft, but what do I know.
>
> Complicating the whole matter is that I have a flexible coupling between
> the shaft flange and the gearbox flange. It could be that the flexible
> coupling was damaged and needs to be replaced. Or perhaps just re-aligned.
> We'll see.
>
> David
> Blue Teal #284
>
> > On Jan 30, 2019, at 9:59 PM, Clay Pass via Public-List <
> public-list at lists.alberg30.org> wrote:
> >
> > I would check to make sure the shaft is coming directly out of the center
> > of the stern tube and rotate it by hand to make sure it doesn't wobble on
> > rotation.
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