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Old 10-10-2019, 09:29 PM   #1
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The words you don’t want to hear...

So something happened today which led me to think as boater’s what words don’t we want to hear?

I’ll start:

Today I decided to back the boat into the slip, while backing her in my lovely lady tells me something, it went like this...

Her-“stop the boat”
Me-“what”
Her louder- “STOP THE BOAT!”
Me-into neutral and down ladder I go
Her-“I dropped the dock line and now it’s gone”
Me-look at the taunt line on cleat
Her-“I don’t know what happened”
Me-“well the prop and shaft do”
Her-“is it bad”
Me-head back up and finish with one engine.

In the end she found a diver at the dock to dive and clear the line and do an inspection, $50 bucks cash later we got the all clear, thank goodness I was at idle and threw it in neutral fast.

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Old 10-10-2019, 10:10 PM   #2
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Once, I was able to throw the gear in reverse momentarily and unwind it. Once. Really hate this particular swim, but it’s happened.
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Old 10-11-2019, 08:11 AM   #3
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Your reaction was good and the outcome was in your favor. Could have been much, much worse. Annoying, irritating... yes. But mistakes happen and there was no damage.
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Old 10-11-2019, 12:50 PM   #4
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I just got this call today.

Yard: I just got a call from the prop shop. They've condemned you shaft and coupler. The key ways on both are wallowed out and the key is trashed.
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Old 10-11-2019, 01:06 PM   #5
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Ouch
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Old 10-11-2019, 04:09 PM   #6
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Quote:
Originally Posted by Shrew View Post
I just got this call today.

Yard: I just got a call from the prop shop. They've condemned you shaft and coupler. The key ways on both are wallowed out and the key is trashed.


Damn...
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Old 10-12-2019, 10:05 AM   #7
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Why aren't there heavy gauge lines that float AND still have good tensile strength on the market?? Its amazing how fast a line will sink and cause a potentially catastrophic event.
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Old 10-12-2019, 10:40 AM   #8
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Quote:
Originally Posted by Shrew View Post
I just got this call today.

Yard: I just got a call from the prop shop. They've condemned you shaft and coupler. The key ways on both are wallowed out and the key is trashed.
Expensive yes. Better to find out while in the yard. Fix it and forget how much you paid. I do it all the time. LOL

Cant they rotate the shaft 180 degrees and cut a new key way?
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Old 10-12-2019, 11:35 AM   #9
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Quote:
Originally Posted by Shrew View Post
I just got this call today.

Yard: I just got a call from the prop shop. They've condemned you shaft and coupler. The key ways on both are wallowed out and the key is trashed.
Now you need to know why. What happened to cause this.
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Old 10-12-2019, 11:41 AM   #10
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Now you need to know why. What happened to cause this.
I doubt if Shrew is the first owner.

Repeatedly shifting too fast? (just a guess)
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Old 10-12-2019, 11:51 AM   #11
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I am not a machinist but is it possible to cut larger keyways and go with a bigger key? Or is that a dumb question???
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Old 10-12-2019, 12:03 PM   #12
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I am not a machinist but is it possible to cut larger keyways and go with a bigger key? Or is that a dumb question???
Not a dumb question at all! The answer is "yes", provided you have access to a machine shop with a journeyman machinist and the equipment to machine a new keyway & a mating key.
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Old 10-12-2019, 12:45 PM   #13
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Well it would seem to be much less cost even if you had to travel a bit.
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Old 10-12-2019, 02:11 PM   #14
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Get a corded Dremel and a LOT of bits....and then hire it done. New shaft seems extravagant - and I suspect this issue is not confined to just one set of running gear.
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Old 10-12-2019, 02:55 PM   #15
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If the person installing the prop does not have prussian blue, and valve grinding compound, or the like, you might expect more of this. Sometimes, the installer is careless; I have even heard folks say nut torque is not so important, since the key is supposed to take the the load.

But, most couplers are straight and use a clamping force and/or setscrews to provide friction. Again, if it is loose, the keyway will be stressed. Setscrews need dimples applied to the shaft before screw insertion.
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Old 10-12-2019, 03:19 PM   #16
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Not a dumb question at all! The answer is "yes", provided you have access to a machine shop with a journeyman machinist and the equipment to machine a new keyway & a mating key.
There are many, many machine shops in the area.
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Old 10-13-2019, 12:41 AM   #17
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Ok, so I didn't intend on my post to become a pseudo hijack. The long story is, I had a very soft grounding last year at about 3.5 knots. I heard a small donk, and just as I was saying "Did you hear that?", I slid to a stop. In fact, I was sitting still in gear, because the keel was in the sand, not the prop. I got tugged off by a neighbor and immediately hauled for inspection. I had a chunk out of one prop blade about the size of a pinky nail. Everything else looked fine.

Fast forward and I've decided while I'm getting my dripless replaced, I'd pull the shaft and have it inspected and the prop checked and fixed.

Shaft is bent, cutlass bearing is trash, shaft strut was loose and leaking, key is trashed and the keyway on the shaft and the coupler are wallowed out.

This next piece of info. was particularly interesting. This is all old damage (mostly because there is no way my soft grounding did all this). Someone knew this issue was occurring. Someone drilled two holes through the coupler and the into the shaft and inserted two set screws to attempt to address the problem with the key and keyways.

We suspect a PO had a hard grounding and did a half-azzed workaround.

The strut has been removed and there is no hull damage. So now I get:

New Shaft
New Coupler
New cutlass bearing
re-seated shaft strut
Repaired and tuned prop
repacked rudder shaft
new dripless shaft seal
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Old 10-13-2019, 12:44 AM   #18
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Christmas came early this year. Well it should be smooth running now.
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Old 10-13-2019, 01:06 AM   #19
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Daymn, that sucks. Sorry for you. Now, it is all fixed. Go forward and forget what how much you paid with the knowledge it was repaired properly.
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Old 10-13-2019, 01:39 AM   #20
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Is your insurance going to chip in?
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