Camber spar too long?

Camber spar too long?

Postby JohnReinagel » Mon Jun 05, 2017 2:18 pm

I recently purchased a 1984 Hoyt F32, while attempting to set up the camber spar I was unable to get the grommets over the horns at the clew. I saw a post that someone actually lashed line and stretched the sail to get the grommets on the horns. I did this and did get the grommets on the horns. For my set up, this doesn't seem right since the tension is so great that the sail cannot take any other shape at that section but flat. Also, when I attempt to drop the sail, I need to remove the lower hank and remove the tack from the deck, and even after that the camber spar seems to push the fore-guide over the front on the bow pulpit a bit and seems to get bound up. Is someone familiar with what may be going on here? I am going to remove the sail from the horns and lash the grommets to the horns at different tensions, and maybe modify the camber spar length if needed, but maybe someone has already experienced this and has a better answer.

Thank you,

John
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1984 Hoyt F32
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Re: Camber spar too long?

Postby Hans » Wed Jun 07, 2017 2:33 pm

John,
When I started sailing with Freedom I experienced the same problem, what resolved it on my boat: the forestay was a bit too tight, giving more slack helped.
As you can see on the sailplan the luff of the jib isn't straight, it has a bight in it when the jib is raised and sheeted in.
In order to allow this to happen there must be enough slack in the forestay. When pulling the grommets over the horns ( always a nasty job) you must have enough play in the forestay to push the spar so far direction of the forestay that you create this bight. It helps if somebody lifts the fore end of the spar to about the same height, as it has when the jib is raised, at the same time when you're pushing the spar forward.
Hope this helps,
Hans Hansen, Harlingen,The Netherlands.
Freedom 45AC #47 "Scherezade".
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Re: Camber spar too long?

Postby JohnReinagel » Thu Jun 15, 2017 2:34 pm

Thank you Hans for your reply and insight. I had as much slack in the cable as the hardware connections allowed, but yet with the camber spar resting near the swage, the cable must have been crimped (??) enough to sheer. Since posting this I have read of some people using PVC or something like a shroud cover over the assembly to stop the camber spar from dropping low enough to place that pressure on the cable, this seems to make sense. Any chance you attempted that?

Thank you,

John
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Re: Camber spar too long?

Postby RadioZephyr » Fri Jun 16, 2017 9:47 am

Not sure if this is exactly what you're looking for, but I had an issue with my camber spar dropping too low on the jib stay when the sail was down, and getting caught on the swage fitting. As a result, the fitting itself had become slightly bent by the attempts to raise the sail with the camber spar caught on it, making it even more likely to get hung up. My solution was placing a stainless wire rope clamp above the swage fitting to prevent the camber spar from sliding down over it. I only installed it a couple weeks ago, but it seems to be working just fine. I ordered the clamp from McMaster-Carr, part number: 3017T43 (https://www.mcmaster.com/#3017t43/=183e2tc).
Josh
F36/38, Hull #25
Boston, MA
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Re: Camber spar too long?

Postby JohnReinagel » Sat Jun 17, 2017 4:15 am

Hello RadioZephyr, being so new to the F32 I cannot say with any certainty what I am looking for, but I think you may have found it for me. That seems to make good sense, and will most likely resolve the issue at hand, thank you. Are you concerned at all with sail chafe with the exposed threaded ends at all or does the sail seem to keep away from those well enough?

John
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Re: Camber spar too long?

Postby RadioZephyr » Sat Jun 17, 2017 7:16 am

Oh good! I have it so the two threaded ends are pointing forward, so sail chafe hasn't been an issue.
Josh
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Re: Camber spar too long?

Postby JohnReinagel » Sat Jun 17, 2017 10:05 am

Yes that would make sense. As I was thinking about this, I wondered the best method for stopping the camber spar from tipping to the side causing sideways twist against the fore stay, but I think just placing the halyard around the stowed away sail and taking up the tension seems to keep it in a mostly upright position. If others have better methods, I'd love to hear them.

Thank you RadioZephyr and Hans.

John
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