yeah, I did look into the getting custom track, but the mast is in the way
to use a track that has the right radius. So it would need
to be a special track which is flat in the middle, or I can move the track
ends forward (pain). Thats why I opted to try the other simpler idea first.
Since on most race course (windward/leeward) you don't do much broad
reaching I haven't found the outer limit of the jib range to be
an issue. If I do go for a broad reach I just release the "relativity" a few
inches. Downwind there is no pressure in the jib anyway.
Anyway, just trying to make this piece of exercise equipment even better.
Christian
On Feb 12, 2008 5:11 PM, <BDally6107@xxxxxxx> wrote:
> Christian,
> the downside to adding more purchase to the jib is that it will not stay
> correctly sheeted when you go two sail reaching (the two sails will not be
> in sync with one another). I have seen the problem you describe but it is
> usually associated with something in the jib sheeting system causing
> excessive friction. Normally, you should only experience this in the last
> two inches of boom travel and you can quickly pull hard and the jib will
> come in.
>
> I've thought a number of times about changing the radius of the jib track,
> however, I've learned to use the car travel to my advantage right after the
> start. Normally, I find that if the jib car is moving to weather, I've over
> sheeted the jib--an advantage sometime to gain a lee bow position. The
> exception is in really light air and when like to see the car move a couple
> of inches to weather. It is easy enough to order any radius you'd like if
> you prefer something different.
>
> Bram
> In a message dated 2/12/2008 1:23:06 P.M. Pacific Standard Time,
> swiftsolo@xxxxxxxxx writes:
>
> Not sure what the context is for people wanting to move their cleat, but
> since we are on the subject, there are some real improvements
> that could be done to the sheeting system. Here is a couple and how I've
> tried to improve it.
>
> 1. When sailing up wind I have often wanted to sheet the jib harder. But
> If I set the relativity to that, I get a situation where
> pulling on the main, just makes the main go in. E.g. the force from the
> jibsheet behind the mainsheet cleat is higher than the force
> it takes to just move the main in. So the sheet is not moving through the
> mainsheet cleat. Possible moving the mainsheet cleat aft
> could alleviate some of this issue. The solution I have tried is to use
> more purchase in the jib sheet. Sailed with that most of last year
> and it appears to work fairly well. But obviously down wind your jib is
> not going out as far as it would with the original system. I don't think
> this has an impact on speed, but does require a little more accurate
> steering.
>
> 2. Another issue is when sheeting the jib hard, the cart moves inward on
> the track and chokes the slot off. I feel the boat could have a better
> upwind
> performance if I could sheet the jib a bit flatter. The root cause of
> this problem is that the (49er) track does not have the right geometry
> for our jib. Jordan showed me a way of eliminating some of this, by
> running the jib sheet to the sides of the track.. See attached picture.
> I have only tried this out a few times, and it has hard time working in
> light air due to the extra friction of the blocks. I am going to try
> and taper some line to make it lighter through there and see how that will
> work out. But otherwise it looks promising.
>
> Christian
>
>
>
>
>
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