Clark flexible chain coupling for shafts

[sdowney717]

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?

 

[greysailor]

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...

 

[RT Firefly]

Greetings,
Mr. 717. Interesting. Says "Designed particularly for MOTOR BOATS"

 

[twistedtree]

Actually, I just saw one for the first time the other day on YouTube. It’s 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......

 

[DDW]

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.

 

[sdowney717]

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.

 

[Pack Mule]

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 .

 

[sdowney717]

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...e-Roller-Chain-Coupler-40P-16T-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/transmission-roller-coupling-chain-20005652430.html

 

[Pack Mule]

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...e-Roller-Chain-Coupler-40P-16T-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/transmission-roller-coupling-chain-20005652430.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.