Jib halyard tensioner

Moderator: GreenLake

Re: Jib halyard tensioner

Postby GreenLake » Fri May 24, 2019 11:57 am

It won't, but it can be moved (when not under tension). That's the idea.
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Re: Jib halyard tensioner

Postby tomodda » Fri May 24, 2019 12:59 pm

Looks like a good plan! I'm still busy trying to convince my crew to tension the halyards decently just on the main line, will worry about tensioners some other time.
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Re: Jib halyard tensioner

Postby GreenLake » Fri May 24, 2019 1:25 pm

You simply can't get decent tension with the halyard, at least not the way it's rigged on my boat. When I jury rigged the first attempt at a tensioner, it was child's play by comparison.
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Re: Jib halyard tensioner

Postby jalmeida51 » Sat May 25, 2019 5:37 pm

Yesterday I rigged my jib halyard almost the same way that is shown on the Hobbie Cat. (picture on another post ) I put the cheek blocks on the side of the mast and ran the bitter end through a standup bock the by the mast tabernacle. Ran it through a bulls eye to a cam cleat on the cabin roof. I have more purchasing power and the halyard is much tighter now. It will be interesting to see if there is enough purchasing power to make the luff smooth and flatten the jib. Tomorrow winds 15, good day to see if this helps.
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Re: Jib halyard tensioner

Postby GreenLake » Sat May 25, 2019 6:23 pm

BTW, "purchasing power" is the economic term -- in this case its simply "purchase".

I've looked at the Hobie Cat image but can't see where it has an increased purchase. at all. It seems to have a 1:2 and 2:1 back to back, cancelling each other.
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Re: Jib halyard tensioner

Postby GreenLake » Thu May 30, 2019 9:45 pm

Some results.
When I tested the Prusik loop manually it held firm, but we found that on the boat it slid under load.

The halyard tail is a bit different material, although same diameter as the rope I used for testing.

Luckily, the place where the tail is spliced to the halyard has a slight bump and we could fix the issue by moving the loop above it. The 2:1 was sufficient to easily control and set the desired tension in moderate conditions.

Now we need more practice. It's easy to spot when there's insufficient tension, as the luff will scallop, but it's harder to notice when tension needs to come off again.
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Re: Jib halyard tensioner

Postby Fly4rfun » Mon Nov 16, 2020 10:57 pm

My mind is going to explode from reading all this information. I want to try this stuff, but at this point it's like buying a 5000 dollar stereo system when you have 500 dollar ears. :shock: but it is food for thought. and i enjoy the education.
"Sail Aweigh" 1966 DS1 #2675
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Re: Jib halyard tensioner

Postby GreenLake » Tue Nov 17, 2020 12:55 am

You need to be out on the water with your DS about a dozen times, and the all the then familiar stuff will fade into the background and your mind will be ready for more.
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Re: Jib halyard tensioner

Postby tomodda » Tue Nov 17, 2020 2:12 am

Gary:

Yeah, slow down. The boat has 5 primary controls - jib sheet, maiin sheet, rudder, centerboard, and your weight (balance). GL wrote it up quite well in his Intro to Sailing post. Learn those. Get to the point where you can "feel" what the boat is doing with eyes closed. THEN you can start thinking about the other stuff. I always say that your most important sensor when sailing is your butt :) FEEL the ball... (Caddyshack reference)

Also, truth be told, things like the jib halyard tensioner probably don't add all that much speed. It's all "style points. " I *HATE* a saggy luff on my jib, also known as "scallops." But does it really affect my speed? Me losing 20 pounds of gut would probably increase my boatspeed WAY more!

Seriously, after you learn the basics, rig yourself a better vang. Now THAT made a helluva difference and improvement on speed and handling. Well worth it!
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Re: Jib halyard tensioner

Postby Fly4rfun » Tue Nov 17, 2020 12:38 pm

Thank you Tom, good advice. now how do I rig a trapeze :P :roll: :lol: ?
"Sail Aweigh" 1966 DS1 #2675
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Re: Jib halyard tensioner

Postby tomodda » Tue Nov 17, 2020 12:58 pm

Pour enough beer into your crew so that they're willing to do it. After that doesn't really matter HOW you rig it, they won't care :)
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