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Reply to: Righting systems (lines) - how do you use them?

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[quote=Andinista][quote]So if i understand, that means that the line does not go over the hull right? i guess it seems like you lose some potential mechanical advantage by having the lines anchored to the inside of the hull/tramp and not a line over the hull/outside of the hull. that additional lever arm makes a big difference when righting a large boat doesn't it? Did i miss something there?[/quote]

[quote]I believe you could get more leverage over the hulls but there are plenty here that will debate the physics of that pro and con, from over the hull, or from under.[/quote]

If somebody were pulling the "writing line" from another boat it would make a difference, otherwise not. What matters is the force external to the system you are rightning (cat + you) and the torque it produces. In the first case the force is aligned with the writing line, in which case the lever arm is likely improved if it goes from above the hull. In the normal case, when you are pulling the line, the external force is gravity: vertical. And the lever arm is only increased if you get further out. The tension of the writing line will change if it comes from above or below the hulls, but this doesn't impact the righting torque, it's just an internal force for that matter (you will just charge a bit more or less the hull with your feet..). But still, the tension increase when running the line from below the hulls could be a good reason not to do so. The only benefit is to have a cleaner tramp and a more automatic system, no other. I personally have only experienced with the line from above the hulls, I would guess that it doesn't make much of a difference if you use your harness instead of your hands. But above all, I don't find it necessary to have a line dedicated just to right the boat and all the parafernalia of the bungee, etc. I like also to have a line availabe for other purposes (a towing line mainly), so I just attach a line to the mast base and keep it somehwere where it doesn't bother, if you want a clean tramp, I would say sew a pocket under it, it's more elegant than the bungee stuff in my opinion. By the way, the bungee system is meant for hobie 16 anyway, right? (write?). There it seems to make some more sense.<em>Edited by Andinista on Jul 12, 2015 - 12:35 PM.</em> [/quote]

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