Tack line tension.

[JP233]

Does anyone strong the fitting needs to be that hold the tack line (Rope that come out the pole) too the hull when the kite is up at full chat?

Shiny's pole launch rope is then her tack line, I want to change this for variouse reasons.

If the forces on the fitting aren't that high I belive I have two options;
1. Tie new tack line around the king post, job done.
2. Bolt deck eye in to carbon plate, plexus plate to hull infront of king post.

Would appreciate anyone ideas and or worrys with this.

[dave_ching]

Is the king post far enough back?

[JP233]

Good question. Will have a hunt through the rules later.

[pratn0]

On shiny the pole comes back past eh king post when it's retracted so you may find you can't get the tack in the kite bag with tack line tight being held byt he pole.

on madge i had a two to one adjustment on a standard v cleat.

[JP233]

Depending how much poll we can have out the front of the hull my plan could work. Failing that, I move the unattached fitting aft.

[simon_jones]

Ours is tied off at the back of the sock, on the saddle that holds the block for the downhaul.

[JimC]

The amount the pole bends should give you some clues about the load on the tack line. Its certainly not trivial. Probably the same sort of order of magnitude as the kite halyard cleat.

[Neil C.]

We used to have it tied round the base of the main sheet post, but I guess that's not a very useful tip these days.

[JP233]

Nick, i plan on abandoning trying to get the poll thought the hole in the bulkhead so should (by my reakoning) work

Jim, pole is usually stiff as...


Rules say '4.2.3 Bowsprit
The bowsprit, if fitted, shall be retractable to within 4300mm of the transom. The outer end of
the bowsprit shall be solid or capped. No sail other than a spinnaker may be set from the
bowsprit. '

This simpleton guesses it means the 4300mm is measured from the transom to the tip of the pole?

[Neil C.]

The boat is 3.7m long from transom to stem. You are allowed another 30cm of length for the snout. When retracted, you are allowed up to 30cm of bowsprit sticking out the front of the snout. Or, if you had no snout at all, up to 60cm of bowsprit sticking out the front of the boat.

The vague bit of the rule is the definition of "retractable." It has been argued that you might get away with a fixed bowsprit with spreaders and stays, which is retractable once you have finished sailing with the aid of a shackle key and a screwdriver. But that's not the spirit in which the rule was intended. Somebody suggested at an AGM some years ago that it should be changed to "retractable whilst under way" but it never actually got amended.

[JP233]

wonderful, thanks neil!
am a real fan of asking before acting.

will measure up and see what i can do this weekend!

[roland_trim]

Jealous - I want to be by a boat that can be taken sailing this weekend :-)

[JimC]

The vague bit of the rule is the definition of "retractable."

I have a dim memory going round my head that we wanted to make sure that folk couldn't get protested by a particularly [redacted] M****n sailor because the bowsprit hadn't come all the way back in and so we were staying well clear of using phrasing like "shall retract". Back in those days there was a lot of funny thinking about sprits, with rumours of some clubs even talking about introducing bans.

[simon_jones]

You will be Ro, just not near any water!!

[andy_peters]

Not sure why you would want to separate?  We have one rope which works perfectly in launching/recovery and holding the tack nice and tight.  Very little friction and just pulling up/down the halyard sets or drops the whole kite and pole caboodle.