[Public-List] shaft coupling parts in bildge

[George Dinwiddie]

Greg,

When you look down the hole in 
http://def.dyndns.org/boat/20190429_bolt_out.jpg is that the shaft at 
the bottom, or something else? I can't tell the depth from that picture, 
and I've not seen a shaft coupling that looks like that.

  - George

On 4/30/19 10:54 AM, Greg Wallis via Public-List wrote:
>   Hi to all, and thanks for your replies.
> 
> I got to the boat last night and took a look with fresh eyes and a camera.
> 
> On closer inspection, the round things that fill the holes are bolts with
> no thread, with a very hard rubber structure around them.  The unit has 3
> of these, all of which were fished out of the bildge.  You can see in the
> picture that it has a head on it to fit a large socket or wrench.  This
> suggests that it was meant to be tightened like a bolt.  However there is
> no thread on the bottom of the bolt, and the end of the bolt is actually
> concave, to fit against the round shaft.
> Here is a picture of the bolt I am talking about:
> http://def.dyndns.org/boat/20190429_bolt_closeup.jpg
> 
> Here is a picture of the "round aluminum thing" that the drive shaft
> terminates inside of.  There is 3 opening for the bolts.  This picture
> shows one of the openings.  You can also see the remains of the duct tape
> that was wrapped around the outside edge of the round thing.
> http://def.dyndns.org/boat/20190429_bolt_out.jpg
> 
> Here is a picture with the bolt installed.  Note there is no threads, so i
> just gently tapped it in with a hammer and some grease.
> http://def.dyndns.org/boat/20190429_bolt_installed.jpg
> 
> After installing the 3 bolts, I then clamped the whole thing together in a
> plumbing sleeve to prevent the bolts from flying out from the certrifugul
> force.  (I think that this was previously being done using ducttape).
> http://def.dyndns.org/boat/20190429_clamped.jpg
> 
> Clearly this all need to be redone, but I am pretty sure this will at least
> get me home without the prop shaft falling falling out in reverse.
> 
> Does anybody know what type of coupling system this is?  It's on a 1965
> Alberg 30 with an Atomic 4.
> 
> Thanks
> Greg
> 
> On Sun, Apr 28, 2019 at 11:45 PM Greg Wallis <gregwallis at gmail.com> 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
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