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10-10-2019, 08:29 PM
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#1
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Veteran Member
City: Coronado
Vessel Name: Baba Yaga
Vessel Model: 1979 Californian 34 LRC
Join Date: Mar 2019
Posts: 62
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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.
__________________
1979 34 LRC Baba Yaga
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10-10-2019, 09:10 PM
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#2
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Guru
City: Anacortes
Join Date: Nov 2012
Posts: 1,189
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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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10-11-2019, 07:11 AM
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#3
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Guru
City: Palmetto
Vessel Name: Wanderlust
Vessel Model: 1999 Jefferson Rivanna 52'
Join Date: Feb 2018
Posts: 713
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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.
__________________
John Easley
USCG 100 ton Master
1999 Jefferson Rivanna 52’
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10-11-2019, 11:50 AM
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#4
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TF Site Team
City: Westerly, RI
Vessel Name: N/A
Vessel Model: 1999 Mainship 350 Trawler
Join Date: Jan 2014
Posts: 4,162
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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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10-11-2019, 12:06 PM
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#5
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Guru
City: Mississippi
Vessel Name: ADAGIO
Vessel Model: CHB Present 42 Sundeck
Join Date: Jul 2014
Posts: 920
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Ouch
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10-11-2019, 03:09 PM
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#6
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Veteran Member
City: Coronado
Vessel Name: Baba Yaga
Vessel Model: 1979 Californian 34 LRC
Join Date: Mar 2019
Posts: 62
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Quote:
Originally Posted by Shrew
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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Damn...
__________________
1979 34 LRC Baba Yaga
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10-12-2019, 09:05 AM
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#7
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Guru
City: Sharon, Ma
Vessel Name: Slow Lane
Vessel Model: 2005 Silverton 35 Motoryacht
Join Date: May 2017
Posts: 1,167
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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.
__________________
Jason
2005 Silverton 35 Motoryacht
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10-12-2019, 09:40 AM
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#8
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Guru
City: Aventura FL
Vessel Name: Kinja
Vessel Model: American Tug 34 #116 2008
Join Date: Oct 2017
Posts: 10,595
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Quote:
Originally Posted by Shrew
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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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?
__________________
Two days out the hospital after a week in the hospital because of a significant heart attack.
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10-12-2019, 10:35 AM
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#9
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Guru
Join Date: Jun 2008
Posts: 5,037
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Quote:
Originally Posted by Shrew
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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Now you need to know why. What happened to cause this.
__________________
Jay Leonard
Ex boats: 1983 40 Albin trunk cabin, 1978 Mainship 34 Model 1
New Port Richey, Fl
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10-12-2019, 10:41 AM
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#10
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Guru
City: Aventura FL
Vessel Name: Kinja
Vessel Model: American Tug 34 #116 2008
Join Date: Oct 2017
Posts: 10,595
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Quote:
Originally Posted by jleonard
Now you need to know why. What happened to cause this.
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I doubt if Shrew is the first owner.
Repeatedly shifting too fast? (just a guess)
__________________
Two days out the hospital after a week in the hospital because of a significant heart attack.
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10-12-2019, 10:51 AM
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#11
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Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 21,191
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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???
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
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10-12-2019, 11:03 AM
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#12
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Guru
City: San Diego
Vessel Name: Circuit Breaker
Vessel Model: 2021..22' Duffy Cuddy cabin
Join Date: Oct 2007
Posts: 6,691
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Quote:
Originally Posted by Comodave
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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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.
__________________
Done with diesel power boats! Have fallen in love with all electric!
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10-12-2019, 11:45 AM
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#13
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Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 21,191
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Well it would seem to be much less cost even if you had to travel a bit.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
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10-12-2019, 01:11 PM
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#14
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Guru
City: Meydenbauer Bay Yacht Club
Vessel Name: Lulu (Refugio sold)
Join Date: Mar 2012
Posts: 1,284
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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.
__________________
Keith
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10-12-2019, 01:55 PM
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#15
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Guru
City: Palm Coast, FL
Vessel Name: Coquina
Vessel Model: Lagoon 380
Join Date: Jan 2017
Posts: 2,570
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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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10-12-2019, 02:19 PM
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#16
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Guru
Join Date: Jun 2008
Posts: 5,037
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Quote:
Originally Posted by Codger2
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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There are many, many machine shops in the area.
__________________
Jay Leonard
Ex boats: 1983 40 Albin trunk cabin, 1978 Mainship 34 Model 1
New Port Richey, Fl
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10-12-2019, 11:41 PM
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#17
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TF Site Team
City: Westerly, RI
Vessel Name: N/A
Vessel Model: 1999 Mainship 350 Trawler
Join Date: Jan 2014
Posts: 4,162
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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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10-12-2019, 11:44 PM
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#18
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Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 21,191
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Christmas came early this year. Well it should be smooth running now.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
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10-13-2019, 12:06 AM
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#19
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Guru
City: Aventura FL
Vessel Name: Kinja
Vessel Model: American Tug 34 #116 2008
Join Date: Oct 2017
Posts: 10,595
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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.
__________________
Two days out the hospital after a week in the hospital because of a significant heart attack.
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10-13-2019, 12:39 AM
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#20
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Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 21,191
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Is your insurance going to chip in?
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
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