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Port rudder bracket/mount/thingy cracked!?

Posted: Fri Aug 12, 2011 3:04 pm
by dlandersson
I noticed today - while getting up to 5.5 knots in some really fine sailing weather, that my port rudder bracket/mount/thingy cracked (the aluminum bracket that allows the rudder to swivel up and down - is cracked - and it's recent - like this sail - I would have noticed it when I put the rudder up. The crack is accross the top - where the pressure from the rudder would be strongest when turning. With the crack, the rudder does not fully "turn" - but seems ok for straight ahead - of course - turning is a useful thing. :)

I am open to ideas - I suspect duct tape is not going to do it. :cry:

Re: Port rudder bracket/mount/thingy cracked!?

Posted: Fri Aug 12, 2011 3:18 pm
by quintamala
I had the same problem long ago.
Aluminum brackets loose their shape due to wear and forces applied.
I end with trouble with stainless steel as shown in this picture
Image

Good luck

Re: Port rudder bracket/mount/thingy cracked!?

Posted: Fri Aug 12, 2011 3:26 pm
by Trouts Dream
I left one rudder down while powering through a pass in the San Juan Islands last year. GPS says I was only going 5-6 knots but that was againt a current of about 8 knots (found that out later) So the bracket essentially saw 13 knots of turbulant water.
I broke it accross the top of the bracket on both sides.
Took it to one of 2 welders on San Juan island and they did a good job, cost $25.

Re: Port rudder bracket/mount/thingy cracked!?

Posted: Fri Aug 12, 2011 3:40 pm
by dlandersson
Well you know - from the "misery loves company" standpoint - you guys have made me feel a bit better. Sailing was really great today - some serious force was being applied. :D

Apparently BWY carries them - I just ordered a replacement - I will take the broken one to a welder and keep as a spare. :wink:
Trouts Dream wrote:I left one rudder down while powering through a pass in the San Juan Islands last year. GPS says I was only going 5-6 knots but that was againt a current of about 8 knots (found that out later) So the bracket essentially saw 13 knots of turbulant water.
I broke it accross the top of the bracket on both sides.
Took it to one of 2 welders on San Juan island and they did a good job, cost $25.

Re: Port rudder bracket/mount/thingy cracked!?

Posted: Fri Aug 12, 2011 7:15 pm
by seahouse
Those things are made out of aluminum on an X? That's a poor choice of materials for that application IMHO. Finite number of stress cycles before failure. I would expect that the replacement part would be best made of an alternate material. :wink:

Re: Port rudder bracket/mount/thingy cracked!?

Posted: Fri Aug 12, 2011 9:06 pm
by DaveC426913
quintamala wrote:I had the same problem long ago.
Aluminum brackets loose their shape due to wear and forces applied.
I end with trouble with stainless steel as shown in this picture
Image

Good luck
Picture is too small to see anything. :(

Re: Port rudder bracket/mount/thingy cracked!?

Posted: Sat Aug 13, 2011 1:03 am
by dlandersson
I'm afraid your expectations would not be met. :P
seahouse wrote:Those things are made out of aluminum on an X? That's a poor choice of materials for that application IMHO. Finite number of stress cycles before failure. I would expect that the replacement part would be best made of an alternate material. :wink:

Re: Port rudder bracket/mount/thingy cracked!?

Posted: Sat Aug 13, 2011 5:16 am
by quintamala
To DaveC426913..
I have expanded the picture..
See this one.
Image
What I did was copying the out shape and holes of original in three pieces of 6 millimiters stainless steel: One "U" to insert the bracket axis, an 2 "L" both sides toward stern to hold the rudder and welded vertically to the "U".
I´ll try a drawing later..

Re: Port rudder bracket/mount/thingy cracked!?

Posted: Sat Aug 13, 2011 5:36 am
by dlandersson
Much better picture - care to sell some? 8)
quintamala wrote:To DaveC426913..
I have expanded the picture..
See this one.
Image
What I did was copying the out shape and holes of original in three pieces of 6 millimiters stainless steel: One "U" to insert the bracket axis, an 2 "L" both sides toward stern to hold the rudder and welded vertically to the "U".
I´ll try a drawing later..

Re: Port rudder bracket/mount/thingy cracked!?

Posted: Sat Aug 13, 2011 5:54 am
by quintamala
OK..
I handle with Sketchup to make a quick drawing of the pieces I mentioned before
Image
As I said the overall thing is to "copy" the shape of original (aluminum) an drill holes in the right place.
Dlanderson.. That was something I did when the trouble came up. The cut and welding was ordered to a local welder using a hand-made diagram I made.
In the other hand I live in Rota (Spain) and is too far away from US...
Use the idea if you like it... I tell you: My steering is "sharp" as a knife since I changed the brackets..

PD.. One day I´l tell you about a Sheet-to-wheel auto-pilot I use to sail with my :macx:

Re: Port rudder bracket/mount/thingy cracked!?

Posted: Sat Aug 13, 2011 6:44 am
by restless
Got the tee shirt on that one too...
this is our solution

Image


and the various other mods inc hydraulics:http://www.ironengineer.com/mac/steering/steering.html

I like the ss version.

Re: Port rudder bracket/mount/thingy cracked!?

Posted: Sat Aug 13, 2011 7:00 am
by dlandersson
Is the welding on the other side as well? 8)
restless wrote:Got the tee shirt on that one too...
this is our solution

Image


and the various other mods inc hydraulics:http://www.ironengineer.com/mac/steering/steering.html

I like the ss version.

Re: Port rudder bracket/mount/thingy cracked!?

Posted: Sat Aug 13, 2011 1:13 pm
by restless
indeed, 10 pieces of tool plate ally on each bracket, port and starbord. More than a few hours to weld that lot!

Re: Port rudder bracket/mount/thingy cracked!?

Posted: Sun Aug 14, 2011 9:11 am
by dlandersson
Will I need to pull my 26X out of the water to replace the aluminum rudder mount? Or can it be done in the slip? 8)

Re: Port rudder bracket/mount/thingy cracked!?

Posted: Sun Aug 14, 2011 3:53 pm
by restless
on the slip is fine.. get a spare person though so you can avoid a christmas tree of vice grips!
If you have the poxy early 2 part bracket, get them welded together and get some sort of backing plate. My bolts were halfway through the hull :x contributing to even more than the usual macsteering slop. In terms of engineering a truly disgraceful statement, one that even Roger abandoned fairly swiftly!