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#1
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If ANYBODY wants to see JaxAshby HUMILIATED...
Here's a link I just found.
http://206.131.241.61/ubb/ultimatebb...c&f=1&t=008434 Jax is SUCH a anal orifice!! ROTFLMAO!!!!!!! Talk about getting publicly humiliated! |
#2
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Roberto wrote:
Here's a link I just found. http://206.131.241.61/ubb/ultimatebb...c&f=1&t=008434 Jax is SUCH a anal orifice!! ROTFLMAO!!!!!!! Talk about getting publicly humiliated! Jax does not care that he is publicly humiliated; it happens all the time. However, in this case Jax knows what he's doing. I couldn't find the beginnings of this thread, but it probably started when someone made a claim such as "the catenary affect of an all chain rode provides enough shock loading to hold a boat in all conditions." When Jax sees the word "catenary" misused like this he pounces. The problem is that the chain provides plenty of shock loading while its still laying on the bottom, but once it is lifted up and assumes the catenary shape, it provides none. In other words, chain by itself provides comfort in lighter air, but gets dangerous in heavy air. And while the word "catenary" properly describes the shape of the chain, it has no magical properties, and in fact signals the point where the chain rode has lost its effectiveness in this regard. The solution, of course, is a snubber, and Jax does make the error of denying the stretchiness of nylon, but to his credit, many people use a too short, too thick snubber to be properly effective. The engineer from S/V HyLyte makes a few blunders in his argument that opens the door for Jaxie: For instance, claiming the the boat motion in waves is a "conservative 2 feet per second" doesn't seem right at all. In fact, I would guess that boats bobbing in a nasty little harbor chop move considerably faster than that. If you have any doubt, try moving your hand in front of you 2 feet per second - its hard moving it that slowly. Although not stated, the situation under consideration is a boat fully exposed to a storm, such as the Cabo disaster of 20 years ago. The engineer makes arguments based on simple waves, and doesn't consider breaking waves at all. Another mistake is grossly underestimating the horizontal loading due to the wind. He says his First 42 has a load of 135 pounds in 20 knots; the ABYC says a 40 footer has a load 300 pounds in 15 knots and up to 2400 pounds in 60 knots. And this is just the beginning - if the boats gets a bit sideways to the wind, the load goes way up. The issue here is how much wind does it take to stretch the chain out fully. By underestimating the loading, the argument that 150 feet of chain will need 56 knots of wind to lift it off the bottom becomes bogus. It will, in fact, be stretched out in winds much lighter, implying that snubbers are needed whenever a blow is expected. So be a little careful arguing with Jaxie - although he's completely wrong most of the time, there are a few arguments where he's learned a bit. This is one that he takes from one group to another, like an old bar trick. |
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