Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 16-07-2022, 13:14   #1
Registered User

Join Date: Jan 2022
Posts: 15
Stress crack on skeg( pic included)

Hey guys

I grinded a small spot of rot on the Skeg and found these. The crack stretches around 20cm, And I think the core is rotten, at least it looks hollow to me. And since the crack is in such awkward position, do you think itís necessary to take the rudder down and rebuild the Skeg? The crack is on one side of the Skeg, and itís right next to the rudder stock. And on the rear of the Skeg itís kind of curvy to fit the stock.

Please give me some thoughts and suggestions. Thanks!
Attached Thumbnails
Click image for larger version

Name:	FC118222-D643-4793-A145-6641C2935341.jpg
Views:	372
Size:	403.4 KB
ID:	261090   Click image for larger version

Name:	5F129F55-09FD-4151-98D5-B9CAA75FC299.jpg
Views:	345
Size:	435.3 KB
ID:	261091  

Click image for larger version

Name:	01140816-1453-4F61-AEB6-18025D2F7D69.jpg
Views:	316
Size:	430.1 KB
ID:	261092  
albertjizhang is offline   Reply With Quote
Old 16-07-2022, 13:16   #2
Registered User

Join Date: Jan 2022
Posts: 15
Re: Stress crack on skeg( pic included)

My grinding skill is nonexistent, please ignore that. I promise I’ll work on it
albertjizhang is offline   Reply With Quote
Old 16-07-2022, 13:30   #3
Registered User

Join Date: Jun 2020
Posts: 10
Re: Stress crack on skeg( pic included)

It is like tooth cavity , you have to remove all rotten core and cracked laminate. After you end up with healthy remains build it up from inside out and use epoxy for added strength.
simer is offline   Reply With Quote
Old 16-07-2022, 16:12   #4
Registered User
 
deblen's Avatar

Join Date: Oct 2014
Location: Bay of Fundy,Grand Manan,N.B.,Canada N44.40 W66.50
Boat: Mascot 28 pilothouse motorsailer 28ft
Posts: 3,422
Images: 1
Re: Stress crack on skeg( pic included)

My opinion : I don't believe you can do a proper permanent repair without removing the rudder. To do a proper repair you will need to wrap grp cloth around the vertical rear edge of skeg-port to stbd. Also you will probably need to grind in this rear edge of skeg.
As others have said-to do a proper repair,you must cut,chisel & grind until you get to solid existing material.
If you can't remove the rudder now.you may get by for a season by just patching the crack for now.
Cheers/Len
__________________
My personal experience & humble opinions-feel free to ignore both
.
deblen is offline   Reply With Quote
Old 16-07-2022, 16:42   #5
Moderator
 
tkeithlu's Avatar

Cruisers Forum Supporter

Join Date: Feb 2012
Location: Carrabelle, Florida
Boat: Fiberglas shattering 44' steel trawler
Posts: 6,084
Re: Stress crack on skeg( pic included)

Ditto on Simer's post.

Odd place for a stress crack.

Follow the crack out the sides of the skeg. You've got a crack and delamination in a very protected spot - between the rudder and the skeg, and it's not at the attachments for the rudder.
__________________
Never let anything mechanical know that you are in a hurry.
tkeithlu is offline   Reply With Quote
Old 16-07-2022, 17:37   #6
Moderator
 
JPA Cate's Avatar

Join Date: Nov 2011
Location: aboard, in Tasmania, Australia
Boat: Sayer 46' Solent rig sloop
Posts: 28,884
Re: Stress crack on skeg( pic included)

Interesting comment, about it being an odd place for a stress crack. That was my thought, too when I first saw it, and went on to wonder about a plain old flaw in the layup, period. Then I decided to let wiser heads reign.

Ann
__________________
Who scorns the calm has forgotten the storm.
JPA Cate is offline   Reply With Quote
Old 16-07-2022, 17:38   #7
Registered User
 
Spot's Avatar

Join Date: Jan 2019
Location: Minnesota, USA
Boat: Southwind 21 et al.
Posts: 1,769
Re: Stress crack on skeg( pic included)

Hi Albert,
-is this on the Dufour 35?
-are you in a hurry to get back in the water?
-Does it get below freezing where the boat is?
It usually helps to have boat make/model/location in your profile or post
It also helps to include a tape measure, glove, bottle of beer, etc for scale in one of the pics.
__________________
Big dreams, small boats...
Spot is offline   Reply With Quote
Old 16-07-2022, 17:38   #8
Registered User

Join Date: Apr 2011
Posts: 690
Re: Stress crack on skeg( pic included)

To the poster--where are you located? could you have some water in skeg & it froze, causing stress crack?
maine50 is offline   Reply With Quote
Old 17-07-2022, 02:42   #9
Registered User

Join Date: Jan 2022
Posts: 15
Re: Stress crack on skeg( pic included)

Quote:
Originally Posted by Spot View Post
Hi Albert,
-is this on the Dufour 35?
-are you in a hurry to get back in the water?
-Does it get below freezing where the boat is?
It usually helps to have boat make/model/location in your profile or post
It also helps to include a tape measure, glove, bottle of beer, etc for scale in one of the pics.
-yeah it is on the Dufour 35
- not really, itís in the meds, maybe a couple days in a year that gets below zero
-thanks for the heads up
albertjizhang is offline   Reply With Quote
Old 17-07-2022, 03:03   #10
Registered User
 
Searles's Avatar

Join Date: Feb 2020
Location: Port adelaide south australia
Boat: Cheoy lee perry 48
Posts: 755
Re: Stress crack on skeg( pic included)

Do you want to patch it up ,and maybe loose your rudder if it fails ,that skeg holds the lower bearing vitally important to your steering,answer yes drop the rudder clean inside and out ,grind clean to good glass ,if the skeg is hollow fill it with something verry solid ,fitted hardwood and epoxy come to mind ,not something to ignor.⛵️⚓️
Searles is offline   Reply With Quote
Old 17-07-2022, 04:02   #11
Registered User

Join Date: Oct 2019
Location: Kennebunk ME
Boat: Owner built 60í Aluminum Expedition Yacht.
Posts: 1,854
Re: Stress crack on skeg( pic included)

What is that black stuff...Oil? Is there a sump forward of this crack?
Any evidence of a grounding? If you disconnect the steering, does the rudder move evenly? Sand off the antifouling further and look for a old repair.
Stress crack from what stress ? Looks like delamination, this isnít a chainplate.
We would definitely drop the rudder.
Mark
Manateeman is offline   Reply With Quote
Old 17-07-2022, 04:28   #12
Registered User

Join Date: Oct 2019
Posts: 761
Re: Stress crack on skeg( pic included)

I would drill a hole in the bottom of the skeg to get any water out.
Stewie12 is offline   Reply With Quote
Old 17-07-2022, 04:38   #13
Registered User

Join Date: Mar 2022
Location: Ontario Canada
Boat: Jeanneau SO 389
Posts: 1,969
Re: Stress crack on skeg( pic included)

The Joint looks tight but at sometime I think a tree branch got hung up a gave it a bang.
Iíd need 6 bottles of beer and audience lawn chairs to watch the repair and repeat system west preachings.
Rumrace is offline   Reply With Quote
Old 17-07-2022, 12:26   #14
Registered User

Join Date: Jan 2022
Posts: 15
Re: Stress crack on skeg( pic included)

Here is some update.
There was water in the Skeg. I grounded the lower part and water streamed out.
I was wondering, the entire inside looks kind of black to me, are they all rotten? Is there a way to tell? They donít look peeling or crumbling to me but they definitely are black(probably because of the sea water trapped in it.) do I need to grind them down too?
Also, the Skeg is hollow, Iím thinking about filling the whole thing with epoxy to make it solid. That be correct right? Thanks
albertjizhang is offline   Reply With Quote
Old 17-07-2022, 12:37   #15
Registered User

Join Date: May 2021
Posts: 185
Re: Stress crack on skeg( pic included)

Quote:
Originally Posted by albertjizhang View Post
My grinding skill is nonexistent, please ignore that. I promise Iíll work on it
hey Albert
Taking down the rudder may be the best option, you could then grind out and down the entire length on the skeg and overlap port to starboard with a few layers 4'' to 6'' mat peel ply.... done use thick epoxy filler to fair first all in one shot good luck
c.K. is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rudder skeg to hull joint crack Tartan 34c zenithboy88 Construction, Maintenance & Refit 11 02-06-2017 04:26
Crack in Skeg fjord Construction, Maintenance & Refit 1 10-04-2015 17:37
Stress Crack Repair Mike Sibley Construction, Maintenance & Refit 9 11-08-2012 08:51
Sliding Windows in pilot house, moss included billr Construction, Maintenance & Refit 4 05-05-2008 14:27
Rudder angle - included delmarrey Construction, Maintenance & Refit 10 07-07-2005 04:08

Advertise Here


All times are GMT -7. The time now is 23:42.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.