Reply
 
Thread Tools Display Modes
 
Old 10-22-2017, 06:36 PM   #1
Veteran Member
 
City: Ashland City, TN
Country: USA
Vessel Name: Tinker Belle
Vessel Model: 1973 Gulfstar 43 Trawler
Join Date: Jul 2017
Posts: 33
What's this on my shaft?

Getting ready to remove this shaft to have it trued up or replaced. I've never seen the thing that's between coupling and the packing gland. I was going to remove it and I don't know if I should be anal about it's location, take measurements or what?
Thanks
Attached Thumbnails
Click image for larger version

Name:	1022171232.jpg
Views:	425
Size:	153.6 KB
ID:	69614  
__________________
Advertisement

Tink is offline   Reply With Quote
Old 10-22-2017, 06:55 PM   #2
Guru
 
Steve's Avatar
 
City: Thibodaux, Louisiana
Country: USA
Vessel Name: Gumbo
Vessel Model: 2003 Monk 36
Join Date: Oct 2007
Posts: 3,592
The only thing I can think of is it may be a way (a stop) to keep the shaft from slipping too far back, maybe hitting the rudder, if it ever came loose at the coupling???
__________________

__________________
Steve W.
http://mvgumbo.blogspot.com/
Steve is offline   Reply With Quote
Old 10-22-2017, 06:59 PM   #3
Guru
 
menzies's Avatar
 
City: Jacksonville
Country: USA
Vessel Name: SONAS
Vessel Model: Grand Alaskan 53
Join Date: May 2014
Posts: 2,179
I was really tentative opening this thread...
menzies is offline   Reply With Quote
Old 10-22-2017, 07:06 PM   #4
Veteran Member
 
City: Ashland City, TN
Country: USA
Vessel Name: Tinker Belle
Vessel Model: 1973 Gulfstar 43 Trawler
Join Date: Jul 2017
Posts: 33
I wondered the same thing Steve. Also wondered if it was something to break a standing wave node, since it's only an 1 1/4" shaft. I'm sure someone on TF will know for sure.
Tink is offline   Reply With Quote
Old 10-22-2017, 07:31 PM   #5
Guru
 
menzies's Avatar
 
City: Jacksonville
Country: USA
Vessel Name: SONAS
Vessel Model: Grand Alaskan 53
Join Date: May 2014
Posts: 2,179
Do you have a get-home set up now (or previously) where this could have been part of the connector?
menzies is offline   Reply With Quote
Old 10-22-2017, 07:47 PM   #6
Veteran Member
 
City: Ashland City, TN
Country: USA
Vessel Name: Tinker Belle
Vessel Model: 1973 Gulfstar 43 Trawler
Join Date: Jul 2017
Posts: 33
Menzies, There's one on the other shaft too. I'm not aware of any "get home" setup. Bought the boat this past January. I wondered about it but didn't really give it much thought until I went to remove it.
Tink is offline   Reply With Quote
Old 10-22-2017, 08:07 PM   #7
Guru
 
Northern Spy's Avatar
 
City: Powell River, BC
Country: Canada
Vessel Name: Northern Spy
Vessel Model: Nordic Tug 26
Join Date: Feb 2012
Posts: 2,635
That appears to be a jewelry remover. Results may vary.
Northern Spy is offline   Reply With Quote
Old 10-22-2017, 08:21 PM   #8
Guru
 
Steve's Avatar
 
City: Thibodaux, Louisiana
Country: USA
Vessel Name: Gumbo
Vessel Model: 2003 Monk 36
Join Date: Oct 2007
Posts: 3,592
If you wear a tie in the engine room keep well clear of it while it is spinning.
Seriously any clothing, rings, or other items could get caught in it.
__________________
Steve W.
http://mvgumbo.blogspot.com/
Steve is offline   Reply With Quote
Old 10-22-2017, 08:34 PM   #9
Veteran Member
 
Sugardog's Avatar
 
City: Alexander
Country: USA
Join Date: Aug 2017
Posts: 66
Used to keep the shaft in the boat in case of catastrophic coupling failure.
Sugardog is offline   Reply With Quote
Old 10-22-2017, 08:49 PM   #10
Guru
 
BruceK's Avatar
 
Join Date: Oct 2011
Posts: 7,464
Quote:
Originally Posted by menzies View Post
I was really tentative opening this thread...
Me too. First thought was penicillin.
It could be to lock the shaft when running on the other engine,removing any risk to the gearbox.
__________________
BruceK
Island Gypsy 36 Europa "Doriana"
Sydney Australia
BruceK is offline   Reply With Quote
Old 10-22-2017, 08:52 PM   #11
Guru
 
menzies's Avatar
 
City: Jacksonville
Country: USA
Vessel Name: SONAS
Vessel Model: Grand Alaskan 53
Join Date: May 2014
Posts: 2,179
Quote:
Originally Posted by Tink View Post
Menzies, There's one on the other shaft too. I'm not aware of any "get home" setup. Bought the boat this past January. I wondered about it but didn't really give it much thought until I went to remove it.
Ah, twins, then probably no get home.

I think the lock when running a single prop is a good suggestion.
menzies is offline   Reply With Quote
Old 10-22-2017, 09:12 PM   #12
Veteran Member
 
City: Ashland City, TN
Country: USA
Vessel Name: Tinker Belle
Vessel Model: 1973 Gulfstar 43 Trawler
Join Date: Jul 2017
Posts: 33
You guys have your minds in the gutter . Thanks for the thoughts. Guess I won't worry too much about it. Should I leave them off when I reinstall the shaft so I don't lose a limb, or worse?
Tink is offline   Reply With Quote
Old 10-22-2017, 09:44 PM   #13
Guru
 
BruceK's Avatar
 
Join Date: Oct 2011
Posts: 7,464
Quote:
Originally Posted by Tink View Post
Should I leave them off when I reinstall the shaft so I don't lose a limb, or worse?
If I`m right that it`s to secure one shaft and gearbox when running on the other engine alone, and you might do that, then reinstall them. Some people run on one for economy. The only question I would have is do they affect the balance of the shaft, but the shaft is so heavy it`s hard to imagine that being an issue.
__________________
BruceK
Island Gypsy 36 Europa "Doriana"
Sydney Australia
BruceK is offline   Reply With Quote
Old 10-22-2017, 10:11 PM   #14
Veteran Member
 
City: Ashland City, TN
Country: USA
Vessel Name: Tinker Belle
Vessel Model: 1973 Gulfstar 43 Trawler
Join Date: Jul 2017
Posts: 33
I don't plan run on one engine unless one engine quits. If its to secure the shaft, I must have some parts missing. I've scoured the internet looking for a shaft stop and don't see anything like it. I dunno.
Tink is offline   Reply With Quote
Old 10-22-2017, 10:19 PM   #15
Guru
 
City: Hotel, CA
Country: Fried
Join Date: Sep 2011
Posts: 8,328
Tough to tell but could possibly be some Bakersfield engineered shaft balancing attempt. How long have you owned the boat?
__________________
Craig

It's easier to fool people than to convince them that they've been fooled - Mark Twain
CPseudonym is offline   Reply With Quote
Old 10-23-2017, 01:02 AM   #16
Veteran Member
 
City: Ashland City, TN
Country: USA
Vessel Name: Tinker Belle
Vessel Model: 1973 Gulfstar 43 Trawler
Join Date: Jul 2017
Posts: 33
Bought the boat in January, 2017.
Tink is offline   Reply With Quote
Old 10-23-2017, 04:44 AM   #17
Guru
 
HiDHo's Avatar
 
City: Heartland
Country: USA
Vessel Name: Hi-D-Ho
Vessel Model: 1987 Krogen Manatee
Join Date: Feb 2012
Posts: 726
I would remove and replace with shaft donut zinc. Placement based on distance to rudders in case couplings failed. Also From photo unable to tell what the devise is made of but once removed check for crevise corrosion.
HiDHo is offline   Reply With Quote
Old 10-23-2017, 07:57 AM   #18
Senior Member
 
OldDan1943's Avatar
 
City: Aventura FL
Country: USA
Vessel Name: Kinja
Vessel Model: American Tug 34 2008
Join Date: Oct 2017
Posts: 359
Take approx measurements, write them down.
I am reasonable sure you will see, on the shaft where is was located but just in case ....
__________________
I used to be a news junkie until I found this place.
Sooo, what's happening in the world and local news?
OldDan1943 is online now   Reply With Quote
Old 10-23-2017, 09:18 AM   #19
TF Site Team
 
Pack Mule's Avatar
 
City: Paris,TN
Country: USA
Vessel Name: William
Vessel Model: Outer reef 32
Join Date: Jan 2013
Posts: 2,458
Looks like s split collar to keep shaft from coming out to far . Maybe had that problem before and just added these after .
__________________
Marty
Pack Mule is offline   Reply With Quote
Old 10-23-2017, 11:06 AM   #20
Senior Member
 
City: Fairport
Country: United States
Join Date: Jan 2017
Posts: 419
Quote:
Originally Posted by Pack Mule View Post
Looks like s split collar to keep shaft from coming out to far . Maybe had that problem before and just added these after .
Agree; But, I don't think the tranny coupler will let loose very easy, from the looks of things. At least there is lots of room to move the shaft back and demolish the correct item.
__________________

diver dave is online now   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 11:00 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012