Reply
 
Thread Tools Search this Thread Display Modes
 
Old 12-07-2018, 02:21 PM   #1
Guru
 
City: Seaford Va on Poquoson River, VA
Country: United States
Vessel Name: Old Glory
Vessel Model: 1970 Egg Harbor 37 extended salon model
Join Date: Jan 2016
Posts: 1,895
Clark flexible chain coupling for shafts

Uses 2 chain gears back to back with a length of chain wrapping round the whole. Seems very innovative.
This allows misalignment and there is no rubber to break.

Anyone ever seen a chain coupling?
Attached Thumbnails
Click image for larger version

Name:	Clark flexible coupling-1916.jpg
Views:	79
Size:	31.3 KB
ID:	83301  
__________________
Advertisement

sdowney717 is offline   Reply With Quote
Old 12-07-2018, 03:36 PM   #2
Senior Member
 
greysailor's Avatar
 
City: Matagorda Bay
Country: Republic of Texas - USA
Vessel Name: Salty
Vessel Model: 2005 Defever 44
Join Date: May 2013
Posts: 178
I've seen many of them on pumps in different industrial settings.....but never saw one on a boat...dosen't mean it won't work...
__________________

__________________
Fair winds,
Luke
greysailor is offline   Reply With Quote
Old 12-07-2018, 03:43 PM   #3
Enigma
 
RT Firefly's Avatar
 
City: Slicker?
Country: Bumpkin?
Join Date: Oct 2007
Posts: 12,182
Greetings,
Mr. 717. Interesting. Says "Designed particularly for MOTOR BOATS"
__________________
RTF
RT Firefly is offline   Reply With Quote
Old 12-07-2018, 03:47 PM   #4
Guru
 
twistedtree's Avatar
 
City: Gloucester, MA
Country: USA
Join Date: Jan 2013
Posts: 4,602
Clark flexible chain coupling for shafts

Actually, I just saw one for the first time the other day on YouTube. Its a sail boat that the owner converted to electric and the motor to shaft coupling is a chain like this. Now If I could only remember where......
__________________
www.MVTanglewood.com
twistedtree is online now   Reply With Quote
Old 12-12-2018, 11:17 AM   #5
DDW
Guru
 
City: San Francisco
Country: USA
Join Date: Apr 2018
Posts: 748
You'd want to make sure the chain could take the tension if you slam it into reverse. I'd also have some questions about how it would behave on a diesel, known for their torsional vibrations.
DDW is offline   Reply With Quote
Old 01-11-2019, 10:10 AM   #6
Guru
 
City: Seaford Va on Poquoson River, VA
Country: United States
Vessel Name: Old Glory
Vessel Model: 1970 Egg Harbor 37 extended salon model
Join Date: Jan 2016
Posts: 1,895
Quote:
Originally Posted by DDW View Post
You'd want to make sure the chain could take the tension if you slam it into reverse. I'd also have some questions about how it would behave on a diesel, known for their torsional vibrations.
You would actually want it to break apart a breakable link if the prop hit something to prevent drive-line damage. And then hook up a new short piece of chain or the replacement link. Design it so it wont break unless the prop stalls.
sdowney717 is offline   Reply With Quote
Old 01-11-2019, 10:22 AM   #7
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: 3,270
I’ve used something similar on two pieces of floor making equipment. We had two separate roller conveyors running off one drive. We never reversed the units though. These were heavy pieces and it was a bugger to get lined up to install master link .
__________________
Marty
Pack Mule is offline   Reply With Quote
Old 01-11-2019, 10:31 AM   #8
Guru
 
City: Seaford Va on Poquoson River, VA
Country: United States
Vessel Name: Old Glory
Vessel Model: 1970 Egg Harbor 37 extended salon model
Join Date: Jan 2016
Posts: 1,895
Quote:
Originally Posted by Pack Mule View Post
I’ve used something similar on two pieces of floor making equipment. We had two separate roller conveyors running off one drive. We never reversed the units though. These were heavy pieces and it was a bugger to get lined up to install master link .
I imagine it was hard to line up if it was geared. Chain coupling is still used to join shafts.
Example
https://www.surpluscenter.com/Power-...1-4050-SET.axd

Make it out of SS and keep it greased. As long as it is sized correctly for the load, it allows for a small amount of misalignment.
https://www.indiamart.com/proddetail...005652430.html
sdowney717 is offline   Reply With Quote
Old 01-11-2019, 10:47 AM   #9
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: 3,270
Quote:
Originally Posted by sdowney717 View Post
I imagine it was hard to line up if it was geared. Chain coupling is still used to join shafts.
Example
https://www.surpluscenter.com/Power-...1-4050-SET.axd

Make it out of SS and keep it greased. As long as it is sized correctly for the load, it allows for a small amount of misalignment.
https://www.indiamart.com/proddetail...005652430.html
Yes it didn’t help that each piece of machinery was ten foot wide and twenty foot long and very heavy and I had to lay on my back and feel for the alignment. The sprockets could not have been in a worse location. Everytime a board would hang up bad it would bust the chain. Bad design , we’ve upgraded equipment since then.
__________________

__________________
Marty
Pack Mule 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 08:18 PM.


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