N6.0 NA Square Top :: Catamaran Sailboats at TheBeachcats.com

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N6.0 NA Square Top

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cholley12

Rank: Mate

Registered: Feb 28, 2018

Last visit: Feb 13, 2023

Posts: 145
Posted: Apr 14, 2020 - 10:06 PM

Talk to texastuma about a cascading system. I run a 10:1 on my square topped prindle 19 and its plenty. The trick is reeving the block and tackle so it doesnt bind.

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Captain Chris Holley
Fulshear, TX
'87 Prindle 19 "¡Hijole!"
'74 sunfish "1fish"
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Andinista

Rank: Mate

Registered: Aug 18, 2003

Last visit: Dec 13, 2023

Posts: 880
Posted: Apr 15, 2020 - 11:15 AM

QuoteI thought about that double cleating system on the traveler like a keel boat would have. Looks neat in your application. Doesn't that make it non self tacking though?

The line runs free under the red part of the cleat, when not cleated, and the traveler works the normal way. When you want to fix the traveler you just cleat the line, on the windward cleat close to you. Before or during the tack you uncleat it and then cleat the other side if you want. What defies the solution is that it takes some attention during the tack, which you don't want on rough conditions. Worse if you are already out on the trapeze. It is very nice to have it on low wind conditions with waves, where the traveler is constantly moved by the waves and the sail. Uncommon and not very exciting situation though...

I would make the following improvement (still can):
Move the cleat even closer to the hull and a bit down. You can see in the picture that the line is deviated up a little bit and this may produce unwanted operation of the cleat sometimes.

QuoteNice Boat!

Thanks! :)
Andinista

Rank: Mate

Registered: Aug 18, 2003

Last visit: Dec 13, 2023

Posts: 880
Posted: Apr 15, 2020 - 02:45 PM

Here's my first attempt, with two cleats at the center of the beam instead of one. This one required to adjust at each tack and it just sucked.

Visible very shortly at 0:29
https://www.youtube.com/watch?v=TgQxIS0TDDM

On a side note, this was a small lake near Santiago in Chile, today it's completely dry, doesn't exist anymore.
texastuma

Rank: Mate

Registered: Nov 22, 2012

Last visit: Sep 12, 2024

Posts: 409
Posted: Apr 16, 2020 - 10:30 AM

Kevin219

Because I'm too cheap to pay $600 for 12:1 main sheet blocks. Consider the pictures above and below. Pretend I add a pulley where the mainsheet currently ties off and go back to boom. That will turn my main sheet from 8:1 to 9:1. Then I take the end of that line and attach it to a pulley. That pulley is in turn its own 2:1 purchase system. Now I will have a 9:1 main sheet as well as a 18:1 Main sheet. (If I want 8:1 and 16:1 i can unthread one of the pulleys on the main blocks.) This will give me an optional fine adjust main that I should be able to trim with one hand.

Here's my favorite part:

In the picture above, the grey pulleys are fixed while the red pulley moves. The grey pulleys are about 4 ft apart. When the fine adjust isn't in use the red pulley is allowed all the way to the back of the boom until it butts up to the rear fixed pulley at this point a 1ft tag line is dangling from boom. When the crew decides to take the main trimming for say double trapping he/she grabs the tag line and pulls it 4 ft out to the edge of the boat and the red pulley is now in its intermediate position.

What do you think?

It does make it easeir to use, but the problem becomes the amount of line you have to pan out in puffs. I run a 12:1 and it is easy to play, but we get puffs from 8 to high teens/low 20s.. so it becomes all in to all out.. I'm running a cascade sheet on a boom: 3:1 to a 4:1. The Tornado sill has a 9:1 and it gets my attention..

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Scott

Prindle Fleet 2
TCDYC

Prindle 18-2 Mod "FrankenKitty"
Tornado Classic "Fast Furniture"
Prindle 19 "Mr. Wiggly"
Nacra 5.8 "De ja vu"
Nacra 5.0
Nacra 5.8
Tornadoes (Reg White)
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