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How big are the rudders on the Alpha 42? Anybody know?
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Interestingly
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http://USHarbors.com
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Catamaran abandoned 300 miles off Norfolk...
“The rudder had somehow been bent,” he said. “It was useless.”
I've always thought the best odds of self-rescue after a loss of steering...
I'll give the owners the benefit of the doubt, too.
I've sailed with Hank
Turns out the boat was Hull #1 of the Alpha 42...
Yeah that looks a little light weight...
That Alpha 42 is a very cool design
Perhaps, but I look at that boat, and the first thing that comes to mind...
It's a light boat
BTW - 2 days before Irene hit
The first thing that comes to my mind is...
I hope I never
I suspect the big wave drove the boat backwards.
Sounds
Just watched the CG video. Now I got even more questions..
Two hulls would make easier?
More from the Alpha website.
Tarjan is a master of spin
Can't go by
Redesign and liability...
I've received legal advice on this
The diameter of the "tube" is one issue, the wall thickness another
I think my beach cat Prindle has rudder "stocks..."
But!, Once you get an engine running
A fertile field for critics. Here's the account from Doane....
refreshing to have somebody reporting from the bilge when one of these boats is abandoned.
It looks to me like someone
I suspect the same. Unless the builder shows the rudders were up to a reasonable spec.
On re-reading Wavetrain, maybe the stock didn't bend.
Someone asked on Wavetrain about the timing of the ill fated trip.
"if he's going to make a living as a delivery skipper, he can't turn down hard jobs like this..."
BTW, Evans Starzinger posted this WX picture over on SA...
Charlie replies to the sailing forums Peanut Gallery...
Whoa! Jon, your post is longer than the article.
Nah, I wouldn't bother, Tom... you've no doubt heard it all before (grin)
I've enjoyed all this story as others. Thanks.
Barking!!!
Reference the owner #2
would want to know more
Look at the link that Jon cited -- it's in the comments
I didn't read that as the buyer of #2
After read it again, I think it was a "spoof";^)
As usual, an excellent, measured analysis from John Harries...
Jon, tell us...
I agree.
Well, not YET, at any rate... (grin)
Thanks Jon...
The definition of "massive"....
I don't think it was cutting corners
Forces only increase in reality not in direct proportion to change of weight, speed, area, etc in direct proportion
I very much think it was cutting corners...
Interestingly
How big are the rudders on the Alpha 42? Anybody know?
Their literature is pretty focused on the interior accommodations..
I sometimes think about steering loss
To recreate their predicament, you would need to turn the rudder hard over..
Wouldn't try to recreate their predicament
Are your rudders spades or on skegs?
Spades
Don't get caught up on that "introductory price"
I'd put 1 1/2" on a 28'er.
too small rudder stock.
I know both Hank and Charlie and I have one question for them . . .
I think Hank and Charlie would argue with you that they were not in the Atlantic in February...
It's not February? Sure feels like it (grin) . . . but January is no better.
Exactly...
Your unexamined beliefs are showing, Jon
What are you sailing, Mark?
A Manta 40
You're making the wrong generalizations
I dunno
The mono would be more competitive
Well you are right about that...
None of this is about racing
I was impressed by how the boat sat in the seas.
Many properly hove-to monohulls would have sat there like a duck, as well...
Bilge and batteries, amen to that
Max, they had one engine running. I
They sounded diligent to me, Jon on the charging problems. But the rudders, I see no reasonable cure for that.
I agree with your points..
Different Stategies and Musings
Regarding rudders and loads...
A keel loss usually leads to an immediate result. ;^O
Dragonfly vs. J133
Here's a video while beating
The under appreciated problem with boat speed as a means to achieve VMG
That's really interesting
I have never seen this written about.
That's why VMG and Polar Charts are always relative to the True, not Apparent, Wind
A corollary: Pointing ability is more important than you thought.
Used to play with the same curves for an ice boat.
"Unexamined", perhaps - but not necessarily unobserved...(grin)
My point was not that catamarans are close-winded
if there was ever a case for the owner picking up the rescue bill, this is it.
Charlie Doane posted an excelelnt account of the abandonment at
I would have thought that the boat could have been sailed
Now, after all this talk...
I have the price list
A couple of the buyers have posted in other forums
Sounds about right
Well those are tiny little rudders, surprised they noticed them missing...
The rudder size is not unusually small at all
Agreed
Two of them -- I wonder about that...
forereaching depends on sail balance
They aren't evenly loaded.
I still don't see the point
Even if you don't turn, the rudders see different forces, Mark
I have agreed with you that mathematically, the rudders see different forces at different times
Often the easiest analogies are extreme as examples ;^)))
I don't buy the ski example in any form
Not only
Didn't they dive under the boat and look, as I recall.
Maybe snowboard would be a better analogy, Steve.
Aside from her being too good looking for you :^)))
Enough snow and plenty of cold to sustain it.
The owner stuck his head under and looked
I agree.
Here is a monohull example
Those rudders are a compromise required by shallow draft. Nevertheless, the Alpha rudders were under bui
Of course it is a compromise
So I have become more interested in this shaft diameter thing
Can't sit still any longer...
This whole thing will shake out
This could be an opportunity for the builder, if they're smart.
I'm still in this for the rudders.
Many monohull spade rudder shafts are seriously undersized.
My Cross 35 Tri had a spade rudder. I used 1 1/2 stainless for a shaft. I also
Looking around the boatyard yesterday, it seems like ALL mono spade rudders are underbuilt
Mark, do you know another Manta 40 owner on Doublewide
Yes, I know Doublewide well
WTF? My post was truncated again
Apparently, only one person here is allowed to be a gasbag!
Now I see the problem - I used the "less than" symbol, which cuts off posts
Makes sense. It starts an HTML tag.
Loss percentage for the Alpha 42 is pretty high? 100%
No analogy ;^))). But do look at a site www.boatdesign.net
Picture in thread cited above.
Dude, I sail a catamaran
http://www.dotan.com/article/
You do understand that article is talking about transom hung rudders on racing beach cats?