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Asym Spin & Jib

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britinusa
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Initially Posted - 12/27/2012 : 13:27:21

Does it make sense to even try and fly the jib and an asym????

Paul

Joint Decision. (Sold)
PO C250WB 2005 Sail # 841.

Moved up to C34 Eximius

Updated August 2015

Edited by - on

DaveR
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Response Posted - 12/27/2012 : 14:48:55

Tom Curran and I did once on Island Time, worked fine.

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John Russell
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Response Posted - 12/27/2012 : 17:18:55

I have no experience doing it but, that's never before stopped me from rendering an opinion so, er goes.

I would think it depends on the amount of wind, point of sail and your sail trim ability. DDW in light or very light wind with both of them wing 'n wing should work fine. (WORK being the operative word there) I'd think keeping them filled will be a full time job for the sheet handler. On other points-of-sail, keeping one out of the shadow of the other will likely be problematic. Throw in the shadow of the mainsail and the problem multiplies. I've sailed my boat with headsail alone on a number of occasions and, while it handled ok, it doesn't handle as well as with a more balanced sailplan.

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zeil
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1297 Posts

Response Posted - 12/27/2012 : 18:51:42

Go try it... it'll be a hoot... given a light steady breeze, the asym sock be able to quickly douse the sail, have two pair of hands, good equipment and lots of sea room. Should be a lot of fun... Can I come??

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JohnP
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Response Posted - 12/28/2012 : 06:27:53

No good on a run. Use the gennaker and the main wing-and-wing.

On a broad reach with steady wind and with miles to sail, opening your roller furling jib to 60% size, inside the gennaker, would add some power, in my opinion. I think I'll try it next time I can.

The power it would add probably depends on the wind speed - At 3-5 knots it would do nothing; at 5-10 knots it could add power and speed; at 10-12 knots the boat is already at hull speed and no more power is needed; at 12-15 knots you usually don't fly the chute.

Flying 2 gennakers or drifters with 2 whisker poles would be the best rig to sail long distances down-wind, but would be useless if you needed to navigate around obstacles ahead.

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dlucier
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Virgin Islands (United Kingdom)
7583 Posts

Response Posted - 12/28/2012 : 06:57:46

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by britinusa
 Does it make sense to even try and fly the jib and an asym????
<hr height="1" noshade id="quote"></blockquote id="quote">

For me, flying the genoa along with the chute would mean I'd have to let the chute's tack fly free as I currently secure the tack of my chute to the furled headsail to keep it close to centerline.

Keep in mind that as you approach sailing DDW, the spinnaker is going to roll ahead of the forestay. This can be seen in the photo below.

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DaveR
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Response Posted - 12/28/2012 : 07:14:58

Ya know, I don't remember the exact circumstances but it was pretty much DDW in very light wind. I believe we centered the main to kill the shadow. I think we had the whisker on the jib. But certainly it will only be good in the right conditions. Too much wind and you'll plow and be what NASCAR would call "loose"

Edited by - DaveR on 12/28/2012 07:16:23

dlucier
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Virgin Islands (United Kingdom)
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Response Posted - 12/28/2012 : 07:56:44

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by DaveR
 Ya know, I don't remember the exact circumstances but it was pretty much DDW in very light wind. I believe we centered the main to kill the shadow.<hr height="1" noshade id="quote"></blockquote id="quote">

Yeah, I center mine as well to keep it from blanketing the chute, but more often than not, I'll just douse the main and run on the chute alone when running in a more DDW direction. Usually I try to plan my runs so as to avoid DDW, but sometimes the wind has other ideas.

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DaveR
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2015 Posts

Response Posted - 12/30/2012 : 07:50:45

I hear what you're saying Don. We were racing and on a semi short downwind tack so were kind of stuck with what we had.

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britinusa
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Response Posted - 01/01/2013 : 05:47:19

We secure the Asym Tack to the furler too. I tie a webbing strap to the furler and secure the Asym tack to that webbing, then I can adjust the height of the tack by adjusting the tack line that goes back to the stbd cabin top winch.

I had not thought of the tack issue, that would prevent flying both.

No chance to fly the Asym this weekend, winds were persistently above 17kts. Ruggly weather from the West.

Paul

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John Russell
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Response Posted - 01/01/2013 : 12:21:48

Didn't Henk (Someday Lady) make a sort of bowsprit contraption for his boat? Maybe that would help with securing the tack. Barring that, maybe some kind of pennant?

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zeil
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Response Posted - 01/01/2013 : 13:21:00

Our homemade trial bowsprit works fine but... given that it covers the anchor locker you may consider it less than ideal. Even though it only takes one bolt to temporally tip the bowsprit up and open the anchor locker it is a nuisance and a deterrent when out on the anchor.

Arlyn Stewart correctly commented that you can fly the asymmetrical without a bowsprit by lengthening the tack sheet.

Our thought was that a bowsprit would provide more room forward of a fore-stay/furler (plus the 10" high mast carrier we installed on the bow-pulpit and used when the mast is down) and the asym to change from a port to starboard tack.

Bow pulpit elevated SS mast carrier...

Bow pulpit elevated SS mast carrier also allowed the hatch to fully open during RV camp days and provided room to transport "Someday Baby" Once installed there was no need to remove it... interestingly enough at no time did anyone comment or ask questions about our "bow-chaser"...

Edited by - zeil on 01/01/2013 19:39:17

britinusa
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Response Posted - 01/01/2013 : 13:24:47

The Asym setup on JD has the Tack secured to a line lead back to the cabin top winch. The line runs from the Tack, down to a block secured to the top of the pulpit then aft to a block on the first pulpit downtube, and then another on the first stanchion then free back to the winch. The Aysm has a clip a few inches above the tack. That clip is what I use to attach to the webbing strap. The webbing strap is secured to the furler about 2 feet above the drum and again around 5 feet above the drum, so the strap extends between those two points. Now the clip can run up or down the webbing strap and that is how I can control the height of the tack by adjusting the tension on the tack line.

Paul

Edited by - britinusa on 01/01/2013 13:26:21

DaveR
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Response Posted - 01/04/2013 : 18:39:55

Just revisiting this and a thought popped into my head, I'm thinking that it was actually a drifter and a jib Tom was flying ........... oops. Sorry for the misinfo.

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