Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-30-2018, 02:52 AM   #1
Senior Member
 
waddenkruiser's Avatar
 
City: Southern Baltic
Country: Europe
Vessel Name: Sømarken
Vessel Model: AMS 40'
Join Date: Jul 2012
Posts: 188
Shaft Coupling - what type is this?

Dear All

Does anybody know this type of shaft coupling?

I took these pictures some years ago when we had to rebuilt one of our gears (FL120 + Velvet Drive) ...

I'm interested in name, drawings etc..
Thanks in advance for your support.

BR Wadden
Attached Thumbnails
Click image for larger version

Name:	coupling-1.jpg
Views:	69
Size:	129.9 KB
ID:	79150   Click image for larger version

Name:	coupling-2.jpg
Views:	74
Size:	134.0 KB
ID:	79151   Click image for larger version

Name:	coupling-3.jpg
Views:	76
Size:	142.9 KB
ID:	79152  
Attached Images
 
__________________
Advertisement

__________________
best regards / med venlig hilsen
Wadden
waddenkruiser is offline   Reply With Quote
Old 07-30-2018, 10:56 AM   #2
Senior Member
 
waddenkruiser's Avatar
 
City: Southern Baltic
Country: Europe
Vessel Name: Sømarken
Vessel Model: AMS 40'
Join Date: Jul 2012
Posts: 188
First two pics show the assembled coupling from both sides of ERs rear bulkhead. Flange on the gear has 4 bolts while the part towards the prop has 6 bolts. In between a part which I saw never disassembled and which seems to be made of a rubber like material.
I wonder how it looks inside?
How are torque and thrust transmitted via the elements inside?
__________________

__________________
best regards / med venlig hilsen
Wadden
waddenkruiser is offline   Reply With Quote
Old 07-30-2018, 11:17 AM   #3
Senior Member
 
waddenkruiser's Avatar
 
City: Southern Baltic
Country: Europe
Vessel Name: Sømarken
Vessel Model: AMS 40'
Join Date: Jul 2012
Posts: 188
Why I’m asking? Never had an issue with the shaft coupling and never thought of it as a potential weak point. But a friend of mine lost one of his couplings (different and obviously poor design) this weekend while docking. Propeller shaft slipped backwards, prop damaged.
Fortunately no severe water leakage, stuffing box still working, and repair already underway. And fortunately it happened while the last docking of his vacation trip.
__________________
best regards / med venlig hilsen
Wadden
waddenkruiser is offline   Reply With Quote
Old 07-31-2018, 01:37 AM   #4
Guru
 
kapnd's Avatar
 
City: hawaii
Country: usa
Vessel Name: #31
Vessel Model: ex-Navy MUB 50 fish/cruise
Join Date: Aug 2013
Posts: 539
Sure would have been a good idea to seal up the edges when the hole was cut for the coupling. That bulkhead is rotting merrily away!
__________________
You can lead a horse to water,
But you can't make him ski...
kapnd is offline   Reply With Quote
Old 07-31-2018, 03:17 AM   #5
Guru
 
City: Boston
Country: US
Vessel Name: Adelante
Vessel Model: IG 30
Join Date: Nov 2016
Posts: 608
Looks like a homemade version of a Globe Drivesaver. Rubber can deteriorate with exposure to ozone or petro fluids. Wouldn't expect it to last forever. Next time boat is on hard install proper drivesaver
SoWhat is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 12:14 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012
×