| I20 spin #249683 06/15/12 06:11 PM 06/15/12 06:11 PM |
Joined: Mar 2006 Posts: 337 Arizona AzCat OP
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Posts: 337 Arizona | OK, I 20 guys, how do you deal with the extra luff length on the spin? Should I be taking the mast back toll the spin luff is tighter? When I use the spin, the luff shakes way more than the spin on my N60, can't figure why, is it due to the slack luff? The tuning guide on this forum has the mast standing pretty straight up, which would mean slack spin luff. Is that right? Also, I have shortened the spin pole guys by about 2 " , pulling the tip down about 4.5". Without this the spin would go about 1' above the bail
Auscat MKV 444 A class NACRA I-20- 440/CATHATKA | | | Re: I20 spin
[Re: AzCat]
#249690 06/16/12 01:36 AM 06/16/12 01:36 AM |
Joined: Nov 2005 Posts: 1,203 uk TEAMVMG
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Posts: 1,203 uk | You should have just enough slack inthe luff that, when you grab it between the palm of your hand and thumb, you can twist your wrist half a turn Not sure where you are but the US guys (slow) always set up with more rake than the Europeans (fast!). You might have the wrong spiny for your set up
Edit: just spotted it- Arizona!
Last edited by TEAMVMG; 06/16/12 02:05 AM.
Paul
teamvmg.weebly.com
| | | Re: I20 spin
[Re: AzCat]
#249692 06/16/12 07:03 AM 06/16/12 07:03 AM | MN3
Unregistered
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Unregistered | Slack is bad, ya gotta have luff tension.
i would think a shorter pole would be part of the problem.
a longer pole would add luff tension.
| | | Re: I20 spin
[Re: AzCat]
#249694 06/16/12 08:02 AM 06/16/12 08:02 AM |
Joined: Jun 2001 Posts: 12,310 South Carolina Jake
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Posts: 12,310 South Carolina | OK, I 20 guys, how do you deal with the extra luff length on the spin? Should I be taking the mast back toll the spin luff is tighter? When I use the spin, the luff shakes way more than the spin on my N60, can't figure why, is it due to the slack luff? The tuning guide on this forum has the mast standing pretty straight up, which would mean slack spin luff. Is that right? Also, I have shortened the spin pole guys by about 2 " , pulling the tip down about 4.5". Without this the spin would go about 1' above the bail I20 spin luff lengths have lengthened a bit over time (look at old Worrel photos and how straight the spinnaker poles were). You will need a LOT of prebend in the spinnaker pole to get the right luff tension with the stock rigging. It required so much on our last boat/spin, that I stopped putting the spin pole through the welded fitting in the forestay hardware and suspended it below with separate spliced mid-pole bridles (similar to how the old Nacra F18 was rigged) and made new end-pole bridles. There's no point in pre-loading the pole so the lightest down tweak will break the sucker.
Jake Kohl | | | Re: I20 spin
[Re: ]
#249696 06/16/12 09:32 AM 06/16/12 09:32 AM |
Joined: Sep 2002 Posts: 3,224 Roanoke Island ,N.C. Team_Cat_Fever
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Posts: 3,224 Roanoke Island ,N.C. | Slack is bad, ya gotta have luff tension.
i would think a shorter pole would be part of the problem.
a longer pole would add luff tension.
SMOD.You can't put on a longer pole.
"I said, now, I said ,pay attention boy!"
The cure for anything is salt water - sweat, tears, or the sea Isak Dinesen If a man is to be obsessed by something.... I suppose a boat is as good as anything... perhaps a bit better than most. E. B. White
| | | Re: I20 spin
[Re: Team_Cat_Fever]
#249697 06/16/12 10:49 AM 06/16/12 10:49 AM |
Joined: Aug 2005 Posts: 2,921 Michigan PTP
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Posts: 2,921 Michigan | Slack is bad, ya gotta have luff tension.
i would think a shorter pole would be part of the problem.
a longer pole would add luff tension.
SMOD.You can't put on a longer pole. there is no more "SMOD" for the N20. Check the Open20 rules and there appears to be no limit on spin pole length
Last edited by PTP; 06/16/12 10:51 AM.
| | | Re: I20 spin
[Re: PTP]
#249698 06/16/12 12:44 PM 06/16/12 12:44 PM |
Joined: Jan 2008 Posts: 3,655 Portland, Maine ThunderMuffin
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Posts: 3,655 Portland, Maine | Slack is bad, ya gotta have luff tension.
i would think a shorter pole would be part of the problem.
a longer pole would add luff tension.
SMOD.You can't put on a longer pole. there is no more "SMOD" for the N20. Check the Open20 rules and there appears to be no limit on spin pole length One of the multiple problems with that ruleset. Plus unless you're racing along the gulf coast then nobody that I know is using that set of rules. What I did is what Jake says. I don't use the welded ring to put the spin pole through. I also don't rake that much. I guess that means that the slow US boats still beat me. | | | Re: I20 spin
[Re: PTP]
#249699 06/16/12 12:49 PM 06/16/12 12:49 PM |
Joined: Sep 2002 Posts: 3,224 Roanoke Island ,N.C. Team_Cat_Fever
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Posts: 3,224 Roanoke Island ,N.C. | Slack is bad, ya gotta have luff tension.
i would think a shorter pole would be part of the problem.
a longer pole would add luff tension.
SMOD.You can't put on a longer pole. there is no more "SMOD" for the N20. Check the Open20 rules and there appears to be no limit on spin pole length What is the US Sailing portsmouth number for Open20? I can't find any recognition of it in the current tables. http://offshore.ussailing.org/Portsmouth_Yardstick/Current_Tables/Multihull_Classes.htm Because a couple of people made up some rules, doesn't mean that the original class rules( as greed oriented as they are) were dissolved.
"I said, now, I said ,pay attention boy!"
The cure for anything is salt water - sweat, tears, or the sea Isak Dinesen If a man is to be obsessed by something.... I suppose a boat is as good as anything... perhaps a bit better than most. E. B. White
| | | Re: I20 spin
[Re: Team_Cat_Fever]
#249700 06/16/12 01:04 PM 06/16/12 01:04 PM |
Joined: Dec 2006 Posts: 2,490 On the Water P.M.
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SMOD.You can't put on a longer pole.
there is no more "SMOD" for the N20. Check the Open20 rules and there appears to be no limit on spin pole length What is the US Sailing portsmouth number for Open20? I can't find any recognition of it in the current tables. http://offshore.ussailing.org/Portsmouth_Yardstick/Current_Tables/Multihull_Classes.htm Because a couple of people made up some rules, doesn't mean that the original class rules( as greed oriented as they are) were dissolved. Truer words have never been spoken. As for the DPN, unbelievable as it may sound, it is 59.3. What a crock of BS.
Philip USA #1006 | | | Re: I20 spin
[Re: P.M.]
#249701 06/16/12 01:11 PM 06/16/12 01:11 PM |
Joined: Sep 2002 Posts: 3,224 Roanoke Island ,N.C. Team_Cat_Fever
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Posts: 3,224 Roanoke Island ,N.C. |
SMOD.You can't put on a longer pole.
there is no more "SMOD" for the N20. Check the Open20 rules and there appears to be no limit on spin pole length What is the US Sailing portsmouth number for Open20? I can't find any recognition of it in the current tables. http://offshore.ussailing.org/Portsmouth_Yardstick/Current_Tables/Multihull_Classes.htm Because a couple of people made up some rules, doesn't mean that the original class rules( as greed oriented as they are) were dissolved. Truer words have never been spoken. As for the DPN, unbelievable as it may sound, it is 59.3. What a crock of BS. In that case the stock N-20 should be about 62.4.
"I said, now, I said ,pay attention boy!"
The cure for anything is salt water - sweat, tears, or the sea Isak Dinesen If a man is to be obsessed by something.... I suppose a boat is as good as anything... perhaps a bit better than most. E. B. White
| | | Re: I20 spin
[Re: P.M.]
#249704 06/16/12 01:21 PM 06/16/12 01:21 PM |
Joined: May 2004 Posts: 1,403 Ventucky Red
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Truer words have never been spoken.
As for the DPN, unbelievable as it may sound, it is 59.3. What a crock of BS.
All ya have to do is petition US Sailing and have them review the rating, state yours or the group's position and why it should be done, and they may change it.. Or go to different rating system. | | | Re: I20 spin
[Re: bacho]
#249706 06/16/12 02:40 PM 06/16/12 02:40 PM |
Joined: Aug 2005 Posts: 2,921 Michigan PTP
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Posts: 2,921 Michigan | I don't have a N20, but sail on one a lot. I agree that, in the end, a bunch of N20 sailors got together and made up the open 20 rules. My point is that at least someone is trying to keep it alive. are there more than 7 boats elsewhere that are organized enough to try to keep the SMOD N20 alive? Don't you need manufacturer support to keep something SMOD? Anyone want to state that Nacra is interested in supporting the SMOD N20?
And I believe that the provisional rating for the open20 is the same as the OD N20.
Last edited by PTP; 06/16/12 02:42 PM.
| | | Re: I20 spin
[Re: TEAMVMG]
#249736 06/17/12 11:56 PM 06/17/12 11:56 PM |
Joined: Mar 2006 Posts: 337 Arizona AzCat OP
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Posts: 337 Arizona | I checked it out a little closer this weekend, using the second hole on the forestay adjuster , using a twing ball at the head, I. Do have a 1/4 turn on the luff. Under load this seems very loose. The wind was up this am and the spin was running a lot better. But I can't see the luff at all from skipper position. This may be normal. I run the spin on my 6.0 a bit tighter. The entire spin luff disappears behind the main. I'm sure that the spin is pretty worn out also, hope to remedy that soon.
Also, so everyone knows that it can be done, I righted this AM single handed. I am 5'10" - 185#, stood on the end of the dagger.board, jIb sheeted to the low side, came up pretty easy. Would have been pretty hard in swells though. Had to. Balance on the end of the dagger my back a about a foot off the water, 1 hand over my head. Nice to know in a pinch.
BTW, seems I keep opening up some deep wounds every time I mention the N20, I'll try to keep it up.
Last edited by azcat; 06/18/12 12:05 AM.
Auscat MKV 444 A class NACRA I-20- 440/CATHATKA | | | Re: I20 spin
[Re: AzCat]
#249743 06/18/12 08:04 AM 06/18/12 08:04 AM |
Joined: Aug 2007 Posts: 1,304 Gulf Coast relocated from Cali... TeamChums
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Posts: 1,304 Gulf Coast relocated from Cali... | Brett, the spinn you're running on your 6.0 is an F18 spinn made by Performance Sails. It is FAR more developed than the old E/P spinn on your N20. The N20 is a bit fuller and the draft is a bit farther back, so it is like comparing a Corvette to a Radio Flyer wagon. The two will never perform the same but each have thier strong points. Not sure how old your N20 spinn is but they have evolved a little. When you're in the market for a new(er) spinn, I have one that has two takedown patches and very little use for sale.
Lee
Keyboard sailors are always faster in all conditions.
| | | Re: I20 spin
[Re: Team_Cat_Fever]
#249747 06/18/12 09:52 AM 06/18/12 09:52 AM | MN3
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Unregistered | Slack is bad, ya gotta have luff tension.
i would think a shorter pole would be part of the problem.
a longer pole would add luff tension.
SMOD.You can't put on a longer pole. I miss-read his post "Also, I have shortened the spin pole guys by about 2" " - I overlooked the "guys" and thought he shortened his spin pole 2" | | |
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