[Public-List] shaft coupling parts in bildge

[George Dinwiddie]

Hi, Greg,

First of all, where are you located? Perhaps another Alberg owner could 
take a look at it with you.

I don't think I've got any photos of the drivetrain, itself, on the 
website, but I'll try to describe things as well as I can. Be aware that 
there can be some variances from boat to boat, especially if a previous 
owner has done work in that area or replaced anything.

On the back end of the transmission, there should be a flange attached 
to the driveshaft. A coupling on the forward end of the propshaft (see 
https://www.getaprop.com/image/cache/catalog/Blog/walter%20solid%20shaft%20coupling-500x500.jpg) 
should be bolted to that. This coupling is generally held onto the prop 
shaft by a key (you can see the keyway in that photo) to keep it from 
turning, and three or four bolts (or setscrews) to keep it from sliding 
aft. Here's another photo 
(https://www.generalpropeller.com/image/cache/catalog/Shaft1-500x500.jpg) 
that shows the coupling flange mounted on the prop shaft.

 From your description, I would guess the bolt threads have corroded 
off. Hammering them back in does not sound like a viable solution to me.

Also, it's very important that the engine, the shaft, and the cutless 
bearing all be lined up very precisely. If not, then the shaft will wear 
the cutless bearing, at best, or bend into a pretzel at worse. The 
latter can actually pull the engine off its beds.

  - George

On 4/28/19 11:45 PM, Greg Wallis via Public-List wrote:
> Hi
> 
> Recently purchased my first real sailboat "woodwind" hull 165.
> 
> crane-in in 5 days so i find myself in a bit of a pickle
> 
> i grabbed the propeller shaft and noticed it could be pulled out pretty
> much as far as you can pull it. it hits the rudder if the rudder is
> straight and if rudder is turned it can be pulled further out.
> 
> behind the gearbox is a 5 inch aluminum (i think aluminum) round thing that
> the shaft terminates in.  this thing has 3 large holes. this thing was
> wrapped in ducttape.  what goes in the 3 holes were found in bottom of the
> bildge. 3 heavy steel round things that fit into the holes perfectly.  so i
> gently hammered them back in and now the shaft seems to be holding.
> 
> questions
> 
> 1. what is this 5inch aluminium round thing called? who makes it?
> 
> 2. what are the 3 things that fill those holes called? they fill the hole
> and also fill the opening in the shaft coupling inside
> 
> 3. what prevents the 3 things that fill the holes from coming out?  it had
> duct tape wrapped around it but with all the oil it seemed to come loose. i
> am thinking of putting a fernco or pipe clamps on there from plumbing
> department
> 
> thanks
> greg
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   When I remember bygone days                         George Dinwiddie
   I think how evening follows morn;            gdinwiddie at alberg30.org
   So many I loved were not yet dead,           http://www.Alberg30.org
   So many I love were not yet born.                          also see:
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