Cruising Sailors Forum Archive
Two of them -- I wonder about that...
In Response To: The rudder size is not unusually small at all ()
On the ill fated Alpha 42, I'm not sure that the rudder "free wheeling" occured at the same time as the "bending" of the other. They describe having to lock the wheel over "hard" just to forereach at that speed? I wonder if the damage hadn't occured previously.
As for the size, it looks more like a powerboat rudder. The Cats I've seen have more substantial rudders in terms of depth. I recall them as being more high aspect than than too.
The professed "maximum speed" for the boat wasn't all that high (10 knots, or so).
Also, as you're sailing the boat, doesn't one hull end-up more heavily loaded than the other? It's not the keel, its a control surface.
Messages In This Thread
- Catamaran abandoned 300 miles off Norfolk...
- “The rudder had somehow been bent,” he said. “It was useless.”
- I hope I never
- Just watched the CG video. Now I got even more questions..
- More from the Alpha website.
- Tarjan is a master of spin
- Can't go by
- 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.
- Charlie replies to the sailing forums Peanut Gallery...
- As usual, an excellent, measured analysis from John Harries...
- refreshing to have somebody reporting from the bilge when one of these boats is abandoned.
- 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...
- I don't think it was cutting corners
- I'd put 1 1/2" on a 28'er.
- 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...
- Exactly...
- Your unexamined beliefs are showing, Jon
- What are you sailing, Mark?
- A Manta 40
- You're making the wrong generalizations
- I dunno
- Well you are right about that...
- I dunno
- "Unexamined", perhaps - but not necessarily unobserved...(grin)
- What are you sailing, Mark?
- Your unexamined beliefs are showing, Jon
- if there was ever a case for the owner picking up the rescue bill, this is it.
- I think Hank and Charlie would argue with you that they were not in the Atlantic in February...
- 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
- 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.
- forereaching depends on sail balance
- Agreed
- 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...
- Many monohull spade rudder shafts are seriously undersized.
- Mark, do you know another Manta 40 owner on Doublewide
- Yes, I know Doublewide well
- Yes, I know Doublewide well
- Those rudders are a compromise required by shallow draft. Nevertheless, the Alpha rudders were under bui
- The rudder size is not unusually small at all
- “The rudder had somehow been bent,” he said. “It was useless.”
