R & D flexible coupling

[KAM]

I was just wondering if anyone has had one of these fail. How did the fail safe feature perform.

 

[jwfrary]

I have had them wear out and not want to centre anymore but never actually fail.

 

[Moodysailor]

As above, I've seen plenty in bad way, but never actually seen one fail completely

 

[KAM]

Just wondering how many hours to run it. I thought I'd seen 1000 reccomended by tbe manufacturer somewhere but there's minimal misalignment it's up to about 1400 now and still looks like new.

 

[Mudisox]

Sort out the misalignment, although you may need professional help and it should be OK

 

[LadyInBed]

If they are aligned within the tolerance then there is almost nothing to go wrong with them.
If badly out of tolerance there will be a flexing effect, but I think that will show and cause failures in other areas such as shaft seal, cutless bearing, shaft ware and engine mounts.

 

[KAM]

No such thing as no misalignment but it's set up well within the usual tolerances. Of course there will be misalignment during operation due to torque and g forces when motoring in a seaway which is what it's designed for. Just trying to get an idea of typical practical in service life from users and how it may fail.

 

[dgadee]

I re-engined and accidentally bought a 1" one instead of a 25mm. Tightening it marked it, but though unused it couldn't be taken back. Advertised here on forum.

Good piece of equipment. If shaft slides easily in/out, you are very near alignment. I had to cut my old vetus coupling off shaft and had problems with it. The R&D one is much easier to tighten/loosen - quite a simple device.