Use oversized flexible coupling?

I purchased an R&D flex coupling, but accidentally ordered one with a higher hp rating.

Does anyone know the consequence of using it?

Thank you

 

Strongly suggest you send this question to the manufacturer as it is their baby and they seem dedicated to quality. They have probably encountered your situation several times. Best of luck.

 

Without a doubt, your boat will go faster while using less fuel!

 

How much higher HP? Given they are designed to take thrust and flex, I see little issue with it even if over rated, it will still be better than a direct coupling. As long as your alignment is good you shouldnt be putting any undue strain on the box.

 

Hi Allweather, if there is room to accommodate the larger size, and and shaft sizes match so you don't have to source adapters, it is a bonus. The slightly increased weight should make no difference if properly aligned, unless it is out of balance already.

 

So it's over rated... more drag and more safety margin... embrace it.

EDIT: How much more...?

 

R&D makes couplings for 5-1500 hp. If you’re reasonably close, and it fits your existing coupling, I don’t see a problem.

 

As mentioned above the range that they cover is very broad. Would think only down side would be less flex.