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Old 05-03-2017, 04:43   #16
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Re: Need shaft coupler - any suppliers known?

Try General Propeller in Brandenton, FL. I got a new shaft and coupler from them last year. They were very helpful.
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Old 07-03-2017, 06:37   #17
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Re: Need shaft coupler - any suppliers known?

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A coupling should always have it's face turned and the bore mated to the shaft. How else can you be sure it is running true?
The face is connected to a Drive Saver, which by its nature is a bit flexible. It is also a split coupling, so when the shaft is mated to the coupling, they will have to dissassemble the mated pair to install, then get the tension on each side exactly the same as when mated in the shop. Just seems like alot of variability to me, and precision that takes place in a shop, but may not translate to the actual install.

I have people telling me 'this is the best way and we need to remove the shafts' and others telling me that 30 mm is 30 mm, it's a split coupling anyways, and connected to a Drive Saver, so don't worry about mating them up.

- Ray
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Old 07-03-2017, 08:07   #18
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Re: Need shaft coupler - any suppliers known?

30mm is not an unusual shaft size in Europe (it's what I have! actually quite common) ... perhaps you should look to source from a EU supplier.
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Old 07-03-2017, 08:27   #19
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Re: Need shaft coupler - any suppliers known?

Marine Engines : Drive System Alignment by David Pascoe, Marine Surveyor
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Old 07-03-2017, 08:46   #20
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Re: Need shaft coupler - any suppliers known?

I purchased a replacement shaft and coupler from Deep Blue Yacht Supply late last year. Give them a call and they may be able to help. I believe you can have up to 10 mils (0.010 inch) of difference in alignment when using a flexible coupling or drive saver. If the new coupling has been manufactured properly it should already be true to the shaft bore.

https://www.deepblueyachtsupply.com/
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Old 07-03-2017, 09:30   #21
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Re: Need shaft coupler - any suppliers known?

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The face is connected to a Drive Saver, which by its nature is a bit flexible. It is also a split coupling, so when the shaft is mated to the coupling, they will have to dissassemble the mated pair to install, then get the tension on each side exactly the same as when mated in the shop. Just seems like alot of variability to me, and precision that takes place in a shop, but may not translate to the actual install.

I have people telling me 'this is the best way and we need to remove the shafts' and others telling me that 30 mm is 30 mm, it's a split coupling anyways, and connected to a Drive Saver, so don't worry about mating them up.

- Ray
Fine, do whatever you are comfortable doing. I wouldn't be comfortable selling your solution to one of my customers, but that's just me being cautious of creating possible callbacks.
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