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Showing results 1 to 13 of 13
Search took 0.00 seconds. Search: Posts Made By: Andrew Troup
Forum: Challenges 11-11-2012, 00:44
Replies: 47
Views: 8,677
Posted By Andrew Troup
Re: Paradoxical Lee Helm Puzzle

Yes, I was puzzled about that too .... but I think the sacrificial topmast drag must have been partially offsetting it even at lower windspeeds.
Forum: Challenges 05-11-2012, 16:03
Replies: 47
Views: 8,677
Posted By Andrew Troup
Re: Paradoxical Lee Helm Puzzle

Another learning from this relates to the point someone raised about the (lifting) keel stalling.

It was a source of some surprise and joy to me that this boat was so docile (except in the OP...
Forum: Challenges 05-11-2012, 15:49
Replies: 47
Views: 8,677
Posted By Andrew Troup
Re: Paradoxical Lee Helm Puzzle

cfarrar

You make an interesting point about the lee shore. Prior to this formative experience, I would always stay close to the leeward side, when sailing through narrow harbour moles in tender...
Forum: Challenges 01-11-2012, 20:27
Replies: 47
Views: 8,677
Posted By Andrew Troup
Re: Paradoxical Lee Helm Puzzle

OK: Here's the kicker: refer diagram below (by now there's just about smoke pouring out my poor little laptop's CPU fan outlet). I've added in the elephant in the room (or at least, I think so ) -...
Forum: Challenges 01-11-2012, 19:30
Replies: 47
Views: 8,677
Posted By Andrew Troup
Re: Paradoxical Lee Helm Puzzle

cfarrar

Nice post !

;) (regarding 40 deg heel): in my defence: I did say in the OP that the boat was tender, the rig was tall, and it was blowing hard enough to remove the crests off the...
Forum: Challenges 01-11-2012, 18:30
Replies: 47
Views: 8,677
Posted By Andrew Troup
Re: Paradoxical Lee Helm Puzzle

I became further inclined to be skeptical about the textbook explanation when I first encountered really heavy winds on a sailboat. Provided the breeze was constant, the helm often balanced best with...
Forum: Challenges 01-11-2012, 16:23
Replies: 47
Views: 8,677
Posted By Andrew Troup
Re: Paradoxical Lee Helm Puzzle

I feel the need to provide a diagramatic framework here, partly to be able to discuss the theories others have floated, and partly to hang my own theory on.

Firstly I want to address the textbook...
Forum: Challenges 31-10-2012, 22:54
Replies: 47
Views: 8,677
Posted By Andrew Troup
Re: Paradoxical Lee Helm Puzzle

In the hope of putting this red herring to bed, here's a typical photo of the same syndrome. Photos create the misleading illusion that this is a steady-state condition, as if they showed a constant...
Forum: Challenges 31-10-2012, 22:32
Replies: 47
Views: 8,677
Posted By Andrew Troup
Re: Paradoxical Lee Helm Puzzle

Seems to me there are two animals in this room, a red herring and an elephant.

I'll address the red herring in this post:

I'm referring to the photo of a boat rolling heavily while sailing...
Forum: Challenges 31-10-2012, 22:09
Replies: 47
Views: 8,677
Posted By Andrew Troup
Re: Paradoxical Lee Helm Puzzle

Original post excerpt:

"You're close reaching in strong conditions....There's a bit of a tendency to round up – as you'd expect – but it's not unmanageable if you feather the sail... "



I...
Forum: Challenges 30-10-2012, 18:46
Replies: 47
Views: 8,677
Posted By Andrew Troup
Re: Paradoxical Lee Helm Puzzle

Well, it seems to me all the ingredients are now in the pot for the solution I came up with. Anyone see a way of combining them which is plausible? I'm not saying mine's conclusive: if you can come...
Forum: Challenges 30-10-2012, 17:35
Replies: 47
Views: 8,677
Posted By Andrew Troup
Re: Paradoxical Lee Helm Puzzle

Anyone else care to come up with an alternative explanation, or to toss around ideas on the ones already suggested?
Forum: Challenges 28-10-2012, 14:39
Replies: 47
Views: 8,677
Posted By Andrew Troup
Paradoxical Lee Helm Puzzle

Here's a mindbending brainteaser: (at least, it bent my mind, the one time it happened to me)


You're close reaching in strong conditions, in waters sheltered from the open sea. It's a reasonably...
Showing results 1 to 13 of 13

 
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