Where to sheet a 135% genoa on a 192?

[Brian S]

Just saw this pic on the main screen (Is that picture Dave Kautz's 192?):

Note that it's bigger than the standard 110%, so probably a 135%. And it appears to sheet back to the corner of the house. But then the photo gets too grainy for me to blow it up and see details.

I would like to get a bigger genoa, probably on a furler, but I don't know where I'll sheet it. I don't know that one can put a reasonably long enough track on the house eyebrow - it certainly wouldn't go all the way to the aft edge of the house. And I'm loathe to put track down the side decks. I have heard of people sheeting to the stanchion base at the back of the house, but where to cleat? And how does one figure where to set the clew height for decent lead angles if one only has one lead position? Or is this all something I should have a long heart-to-heart with the sailmaker?

Of course, this is all academic - buying a house means I won't be getting anything for the boat for a long time :naughty:

 

[Sunbird22358]

I'd think that for a 135 you will need to put a track on hte cockpit coamings, aft of the house. A 135 wil lbe too large (LP too long) to sheet to the top of the cabin, although you could still run the sheets forward from an aft lead to the winches on the cabin top (if you have them).
The LP for the standard jib (110%) will be about 6'8" (J: 6'2"), LP for the 135 will be 8'4". If you take a drawing of the 192, draw a line, parallel to the forestay, but 8'4" aft along the LP (luff perpendicular) line, the clew of a 135 will fall along that line. Draw a line perpendicular to the forestay that crosses that 8'4" line to see where the sheet lead for a 135 wil lend up based on height of the clew. That will tell you where the lead block needs to be for proper sail shape, lead will need to move forward or aft if you intend to reef the sail on hte furler since that will move proper sheet lead position forward as sail is reefed. see diagrams below.

 

[Brian S]

Thanks much, Sunbird! Where'd you get that line drawing for the 192? It really helps a lot.

I once had Sailrite quote me a drifter kit. I wonder how big they made it, from a % of J standpoint? And where they figured the sheet lead should go? I think it might be good to sheet it off the aft handle where the lifeline pelican hook goes. That's where my asym sheets.

Looking at the line drawing, it definitely seems like it will be difficult to get a clew height that could sheet to the base of the lifeline stanchion at the back of the house. It would have to be a pretty low clew, and would also be best for a hank on 135%. A furling 135% would almost require jib tracks down the side decks.

I think maybe my best option would be to keep the lapper jib, and add a 12" section of track on the cabin roof, to get better control of jib twist, especially for breezier conditions. Then, I should get a Sailrite drifter kit with a clew height that works for the aft handle sheeting position. That way, for under 10 knot conditions, I would have that big drifter, you know, a summer sail, and then have the option of hanking on the lapper for almost all the other times. When it really pipes up, I could sail under just main or even just a reefed main. Last night it was blustery, and I didn't have my reefing line run yet, having just put the boat in, and so I sailed with the full main only. She moves along and points reasonably enough under just main.

 

[Sunbird22358]

I think I scanned it out of the 1986 Brochure. I have the deck layout scanned too. I think I had a way to scan the picture and then convert to black and white drawing. You will notice that on my jib size diagram I edited the pic to show a luff-extrusion type furler in place of the original wire-luff furler.

 

[Brian S]

Thanks again for the pics, Sunbird. I have them saved away for future reference!