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Old 01-20-2010
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Storm trisail track size?

I am installing a storm trisail track on my mast. I will be carrying a 50sq ft. sail with a 14 ft. luff. The boat is an Islander-28. I need to order the sail track and would appreciate help sizing the track.

I would like to use a continuous length of track but that will require having a 20' piece shipped. Is it reasonable to expect to be able to install the track in two pieces and avoid any potential problems in raising the sail across the end joints of two pieces of track?

Thanks,

Down
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Old 01-20-2010
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If the track is fastened down and aligned properly, having it in two pieces should not be an issue.
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Do you have the trysail already or are you having it made up custom? You want the 14 ft luff to be above the mainsail furled stack, so you'll need to take into account the extra space of mainsail above the boom. You want the track to run close to the deck so you can load the sail and have it ready before it is needed. You want the clew to have a clean lead free of the boom and boom gear to an aft rail lead. 50 sq ft is a small sail. You sure you need this sail at all?

Paul L
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50 square feet of sail with a 14 foot luff means what 7 foot foot? Is your boom long enough for 10 foot foot, then a 10 foot luff would be enough and a shorter track used.
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My boom is 9 ft. I could handle an 8 ft. foot.
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Old 01-20-2010
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Quote:
Originally Posted by Paul_L View Post
You sure you need this sail at all?

Paul L
It is at the lower end of recommended size for my rig. I could add 15 sq. ft. but it isn't for racing.

I hope I need it. That is the point!

No, I am not sure. I am basing this on comparisons with other boats and the formulas recommended.

What I don't find is the recommended track size, not length. I am planning on 20 ft. but do I need 1" track? That is my current question.

Thanks,

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Old 01-20-2010
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I'd install it and hope I didn't need it!
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Quote:
Originally Posted by downeast450 View Post
It is at the lower end of recommended size for my rig. I could add 15 sq. ft. but it isn't for racing.

I hope I need it. That is the point!

No, I am not sure. I am basing this on comparisons with other boats and the formulas recommended.

What I don't find is the recommended track size, not length. I am planning on 20 ft. but do I need 1" track? That is my current question.

Thanks,

Down
The question on track width sure wasn't clear from your original post. I'm guessing 7/8 would be fine. You could try the Harken calculator and put in the info for their mainsail battslide system with external track. Or call up a rigger and see what they suggest - maybe Rigging Only website.

Paul L
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Old 01-22-2010
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Paul,

Thanks for the advice. I have found a rigger who steered me to a yard here on the island who has 20' sections of sail track available.

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Old 01-22-2010
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I also went with the 7/8ths and the installation is on my to-do list. Can anyone describe the install procedure in a little detail and any pitfalls to watch out for?

For example:
* How far off the deck to start the track is advised?
* What size drill bit to use prior to tapping the holes?
* Use what on the SS screws to isolate them from the mast (Tef-Gel?)?
* Anything between the SS track and the mast for isolation?
* Do you generally need to "bend" the track around the gooseneck so you can stay closer to the centerline further up the mast, or do you generally offset the entire track?
* Any other tips / tricks?

Has anyone who's used the trisail in anger had the sail track slides damaged? Many trisails come with grommets installed so line can be run around the mast all the way up the sail - do people actually do that? It would seem to make deployment much more difficult.
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