[Alberg30] two blade vs. three

[Villo Marmei]

You are right....I have a 3 blade prop and it is very easy to take off. I 
tied my rudder with a dock line to my neighbors fence so that it was out of 
my way and spinned the prop off.
I also changed the shaft by letting the shaft loose from the coupling 
against the engine and pulled it out through the back. A tight Stuffing Box 
Packing chews your shaft up.
To replace the cutlass bearing, just unscrew the housing from the hull and 
knock the bearing out....replace and drill new water cooling  holes. I left 
my bushing 3/4 inch longer ...sticking out  so as to have more bearing 
surface. Also put 2 new long SS set screws each to lock the bearing in 
place and then lock the set screw with a SS counter nut.
For the rubber hose just cut the whole thing open with some snips ( There 
is spring wire inside the rubber tube to stop the hose collapsing) also cut 
off the clamps.  Replace rubber hose and SS clamps with new ones from a 
marine store.  Also replace Stuffing box packing. Tighten Stuffing box nut 
to proper water drip and lock up with the big counter nut later. You have 
to adjust the water drip a few times until you have just a few drops coming 
in. The shaft has to have just a little moist lubrication otherwise it 
burns in.The Teflon coated Packing has to compress and also absorb a 
limited amount of water to work well.

The trick in this business is NOT to to try to take any clamps or hoses off 
and then put them back...That is almost impossible and produces lots of 
bloody knuckles....if you try to saw through the spring wire inside the 
hose it becomes almost impossible ...cut the hose open and snip the wire 
through....in 10 minutes that hose is off.
Happy Sailing/Motoring
Villo Marmei
KC 618

PS:
If you have a Fax number I can fax you the whole Prop,Bearing,Shaft assy 
drawing.





At 08:47 AM 4/4/2003 -0500, you wrote:
>And if you are trying to pull the shaft out with thea three-blade prop 
>attached, you have to push the rudder over in the right direction and spin 
>the prop in such a way that it "screws" itself out. I think I had to push 
>the rudder to port and turn the prop counter clockwise... any other 
>combination and it wouldn't work.
>
>R.C. Alley wrote:
>
>>Mike Lehman is probably right, with regard to backing with a 2 blade--in
>>fact I know he is. But you might also find that you get better forward
>>movement with a 3 blade, by which I mean that (the theory is) you have less
>>slippage per revolution of prop with a 3 than a 2.  If you motor a lot, this
>>may be important to you. If the extra drag is of concern to you, and you
>>don't make a habit of backing up a lot, by all means go with a 2 blade.
>>Your shaft should slide out fine without 2 blade prop removal. Mine does.
>>
>>But I am puzzled.  You should be able to get your prop off the shaft with a
>>gear puller, and then get the shaft out, without unshipping the rudder,
>>regardless of prop.  Is there something unusual about your rudder or prop
>>aperture? Or shaft length? And, why do you need to take your shaft out?
>>
>>By the way, what size is your prop?  I am looking for a 3 blade......
>>
>>Rob Alley
>>----- Original Message -----
>>From: <FINNUS505 at aol.com>
>>To: <public-list at alberg30.org>
>>Sent: Thursday, April 03, 2003 7:32 AM
>>Subject: [Alberg30] two blade vs. three
>>
>>
>>>One more question; anyone using a two blade prop with a diesel? Any
>>problems?
>>
>>>Can the prop be removed without having to  unship the rudder?
>>>OK, that's three questions. But I am seriously considering switching to a
>>two
>>
>>>blade prop once I have this one off during this project if there are no
>>>serious disadvantages. I don't like the idea of dragging around that third
>>>blade while sailing if not necessary, either.
>>>thx,
>>>Lee
>>>+---------------------------------------------------------------+
>>>|                This Old Boat by Don Casey                     |
>>>| http://www.amazon.com/exec/obidos/ASIN/0071579931/alberg30-20 |
>>>+---------------------------------------------------------------+
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>>
>>
>>+---------------------------------------------------------------+
>>|                This Old Boat by Don Casey                     |
>>| http://www.amazon.com/exec/obidos/ASIN/0071579931/alberg30-20 |
>>+---------------------------------------------------------------+
>>
>>Public-list mailing list -- Public-list at alberg30.org
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>
>+---------------------------------------------------------------+
>|                This Old Boat by Don Casey                     |
>| http://www.amazon.com/exec/obidos/ASIN/0071579931/alberg30-20 |
>+---------------------------------------------------------------+
>
>Public-list mailing list -- Public-list at alberg30.org
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 +---------------------------------------------------------------+
 |                This Old Boat by Don Casey                     |
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