H/111 rudder bearing

[George Dewey]

PYI worked with the yard, and they told me the yard was someone they have worked with before and were confident they could handle it. Here are some pics of the completed job, and I think before there was a trim ring which is gone. The boat seems to sail fine, helm feels nice, but I wonder how much drag this will create?

 

[Irrational 14]

More than I thought it would be but looks in line for what you get. I've heard only good things about 206.
I'd take your boat back to the yard for correction. That ain't right.

 

[steele]

I suspect there should be a trim ring. This is my 109 rudder just after removal, the ring stuck to the shaft.

 

[longy]

A flat washer isn't going to do much - it's more of a stopgap effort to prevent rudder blade from moving up & rubbing on bottom of hull. If your bearings are properly installed they should have some method to lock the post vertically
For a full race install you'll need to make a washer that fits inside the hull ID, is tapered (hole is much thicker in front) and can be glued into place (best is glue to hull, not bearing)

 

[Roleur]

Mine has a ring.

But, what about that giant crack aft of the prop strut?! What is that?

 

[steele]

I don't think the ring is important for the function but works as a spacer and offers some protection for the lower bearing. It is not too hard to imagine something like monofilament line getting wrapped on the shaft and moving up into the bearing and causing havoc. The diver who changes my anodes once found over 100' of fishing line wraped around my prop, I was lucky it did not damage the lower seal on the saildrive,

 

[longy]

YMMV, but every rudder I've looked at that had a 'ring' / flat plastic washer, that washer was loose in the gap between blade & hull. Any mono could easily go above it (or below)

 

[George Dewey]

Mine has a ring.

But, what about that giant crack aft of the prop strut?! What is that?

That's a trickle of water, it had been raining.

 

[George Dewey]

Thanks for the comments and observations guys, I appreciate that. I'm going to contact PYI and see about the trim ring.

 

[longy]

That's an owner or builder supplied item

 

[Crash]

Maybe yard misplaced/forgot to re-install?

 

[slug zitski]

To didn’t follow the thread

A rudder is buoyant

The washer acts as a thrust bearing to prevent the rudder from floating up and contacting the hull

 

[George Dewey]

To didn’t follow the thread

A rudder is buoyant

The washer acts as a thrust bearing to prevent the rudder from floating up and contacting the hull

View attachment 572391

View attachment 572392

Ug, okay I'll talk with the yard about getting this corrected.

I did email PYI and sent the pictures I posted here, asking if this looks right. Here is their reply:

Yes this looks correct.

The part I think you are asking about is the fairing piece or trim ring that covers the exposed part of the hole.
This trim ring is a detail normally done as a separate part or add-on to the bearing installation.
It is a nice finishing touch but not always done.

 

[slug zitski]

Ug, okay I'll talk with the yard about getting this corrected.

I did email PYI and sent the pictures I posted here, asking if this looks right. Here is their reply:

Hmmm

The spacer is indeed a boatbuilders tool

The spacer ring defines the gap between the top of the rudder and the hull

When you build a new rudder it’s not possible to get this interface gap between the top of the rudder and the hull correct

With a new rudder you first do a dry fit .. without the spacer ring ...observe the gap between rudder and hull

You then cover the hull with a break film ,like plastic sheet, then apply a big blob of fairing compound to the top of the rudder .. then fully insert the rudder ,,, fairing compound on the top of the rudder squeezes out .. after cure you have a perfect fit.. zero tolerance gap

When the spacer is added to the rudder stock and reinserted , you now have a perfect ... 4mm or whatever gap between the top of rudder and the hull

It’s possible that production boats skip this custom detail

Also , Rudder buoyancy is a fact

 

[longy]

Rudder buoyancy is dependent on construction. Without knowing construction details one just has to guess. The production boat rudders I've removed in the water barely floated.
Many of the rudders I've removed in a yard would definitely have sunk

 

[sierrawhiskeygolf]

Rudder buoyancy is dependent on construction. Without knowing construction details one just has to guess. The production boat rudders I've removed in the water barely floated.
Many of the rudders I've removed in a yard would definitely have sunk

No way. Slug knows everything.