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Re: A bunch of Nacra Inter 20 questions [Re: timtower] #249871
06/20/12 02:52 PM
06/20/12 02:52 PM
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South Carolina
Jake Offline
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Originally Posted by timtower
I understand the Nacra 20 is supposed to have a pole length of about 144". With the tack block around 143".

It seems that it's hard to get adequate luff tension on an OD spinnaker. Should I make my pole a little longer? Any anyone know by how much?


Just lower the pole by shortening the end-pole bridles. As mentioned earlier, you will also reduce the stress on the pole by no longer using the welded forestay hoop for it. Replace that with a short loop of line tied to that hoop and two more mid-pole bridles out to the forestay bridle tangs on the hull. You can make all of these lines out of vectran and save on the cost of custom steel wires (and you can adjust the lengths).


Jake Kohl
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Re: A bunch of Nacra Inter 20 questions [Re: Jake] #249912
06/22/12 05:32 AM
06/22/12 05:32 AM
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Guys, why all the bother in finding old masts etc when you will find that mast won't fit any of the fittings. Standard Ali tube is plentiful and cheap and local. On line and shipping usual gets it to your door in a few days in either 2.5m or 5m lengths.

No you don't need any fancy paint or such on it or if you do for aesthetic reasons then get it locally powder coated, it lasts and is tough and dead cheap and again local.

Carbon or glass as a spinny pole is no stronger than Ali and in many ways more prone to breakage when bounced into by the flying crew. An Ali pole will bend and deform but won't just shatter.

Last edited by waynemarlow; 06/22/12 05:33 AM.
Re: A bunch of Nacra Inter 20 questions [Re: waynemarlow] #249915
06/22/12 06:45 AM
06/22/12 06:45 AM
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Originally Posted by waynemarlow
Guys, why all the bother in finding old masts etc when you will find that mast won't fit any of the fittings. Standard Ali tube is plentiful and cheap and local. On line and shipping usual gets it to your door in a few days in either 2.5m or 5m lengths.

No you don't need any fancy paint or such on it or if you do for aesthetic reasons then get it locally powder coated, it lasts and is tough and dead cheap and again local.

Carbon or glass as a spinny pole is no stronger than Ali and in many ways more prone to breakage when bounced into by the flying crew. An Ali pole will bend and deform but won't just shatter.


The sunfish part (mast, boom, whatever that is) is quite economical even from a sunfish dealer. It's much cheaper than buying (and shipping) a raw aluminum extrusion. Bonus is that the sunfish part is anodized too.

The Nacra extrusion is over $400 before you put any hardware on it (this may include shipping).


Jake Kohl
Re: A bunch of Nacra Inter 20 questions [Re: Jake] #249919
06/22/12 10:21 AM
06/22/12 10:21 AM
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Dallas, TX
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Prindle 19MX
Re: A bunch of Nacra Inter 20 questions [Re: lonestarcat] #249922
06/22/12 10:33 AM
06/22/12 10:33 AM
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http://www.aluminiumwarehouse.co.uk/Aluminium-Round_Tube/c120_131/p3116/Aluminium_Round_Tube_%286082T6%29_1%3Csmall%3E%3Csup%3E1%3C/sup%3E/%3Csub%3E4%3C/sub%3E%3C/small%3E_in_x_14_swg/product_info.html

£ 5.85 for a 2.5m length, cheap enough and I'm sure you will have the same in the States, probably as usual, what we pay in £'s you pay in $'s

Re: A bunch of Nacra Inter 20 questions [Re: timtower] #249926
06/22/12 12:26 PM
06/22/12 12:26 PM
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Hawaii
timtower Offline OP
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Pause on the spinnaker pole for a second. I need to move my boat upcountry and it's not looking like a trailer is going to be an option, how hard is it to take the boat apart?


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Re: A bunch of Nacra Inter 20 questions [Re: timtower] #249927
06/22/12 01:11 PM
06/22/12 01:11 PM
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yurdle Offline
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I've bought a couple 6061T6 1.5"x.065"x8' round extrusions from my local Metal Supermarkets and IIRC they were $30-$40.

Re: A bunch of Nacra Inter 20 questions [Re: timtower] #249928
06/22/12 01:53 PM
06/22/12 01:53 PM
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Metal Supermarket does not have 12 foot tubing. Tim, all you need is a socket wrench and a couple of beers to take it apart.


Philip
USA #1006
Re: A bunch of Nacra Inter 20 questions [Re: timtower] #249930
06/22/12 02:12 PM
06/22/12 02:12 PM
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Jake Offline
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Originally Posted by timtower
Pause on the spinnaker pole for a second. I need to move my boat upcountry and it's not looking like a trailer is going to be an option, how hard is it to take the boat apart?


It's not that hard. What Phil said - a large hex key for the front bolts and a socket for the rear bolts is all you need. Be sure to use an anti-seize agent on the bolts when you put them back in (a healthy dose of lithium grease or other). There have been some stripping issues with those bolts so turn them slowly to not overheat the threads.


Jake Kohl
Re: A bunch of Nacra Inter 20 questions [Re: waynemarlow] #249931
06/22/12 02:18 PM
06/22/12 02:18 PM
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Originally Posted by waynemarlow
http://www.aluminiumwarehouse.co.uk/Aluminium-Round_Tube/c120_131/p3116/Aluminium_Round_Tube_%286082T6%29_1%3Csmall%3E%3Csup%3E1%3C/sup%3E/%3Csub%3E4%3C/sub%3E%3C/small%3E_in_x_14_swg/product_info.html

£ 5.85 for a 2.5m length, cheap enough and I'm sure you will have the same in the States, probably as usual, what we pay in £'s you pay in $'s


I work at a machine manufacturer that buys about $5 Million in steel and aluminum annually. We pay almost $0.50 per inch of similar tubing before shipping/freight making a 12' tube $72 USD. The freight on that would probably be $40 to $60 because of the length. I can't believe you can get that tube for a $10 USD equivalent.


Jake Kohl
Re: A bunch of Nacra Inter 20 questions [Re: Jake] #249932
06/22/12 05:35 PM
06/22/12 05:35 PM
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Greenville SC
bacho Offline
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I was quoted about $80 for that piece

Re: A bunch of Nacra Inter 20 questions [Re: timtower] #249933
06/22/12 05:56 PM
06/22/12 05:56 PM
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Hawaii
timtower Offline OP
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I'll probably just go with the sunfish upper boom because it's not that expensive ($140) and available out here, unless someone thinks it's an inferior product.

Also, does anyone have the lengths/widths and type of line I need for mainsheet, jibsheet, halyards, etc.

I know this sounds like a lazy request. But the boat is on Maui (and I'm not) and I want to buy new line for it before I head over there again.

Tim


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Re: A bunch of Nacra Inter 20 questions [Re: timtower] #249934
06/22/12 05:58 PM
06/22/12 05:58 PM
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Hawaii
timtower Offline OP
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Although, if I did find a metal fab shop, they could make it to length I specify instead of chopping the sunfish boom


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Re: A bunch of Nacra Inter 20 questions [Re: timtower] #249935
06/22/12 06:14 PM
06/22/12 06:14 PM
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South Carolina
Jake Offline
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Originally Posted by timtower
Although, if I did find a metal fab shop, they could make it to length I specify instead of chopping the sunfish boom


It's really pretty easy to cut with a hacksaw and a miter box. But..either way.

CALLING DAVID INGRAM! I've looked but can't find that I20 site you used to have up with all the line lengths...where might we find that? Tad? anyone?


Jake Kohl
Re: A bunch of Nacra Inter 20 questions [Re: Jake] #249936
06/22/12 07:08 PM
06/22/12 07:08 PM
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Punta Gorda, FL
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jkkartz1 Offline
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Was it on 1design.net?

Re: A bunch of Nacra Inter 20 questions [Re: jkkartz1] #249937
06/22/12 09:17 PM
06/22/12 09:17 PM
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Posts: 1,304
Gulf Coast relocated from Cali...
TeamChums Offline
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I've been using sunfish booms for 5 years. They work as good as anything you get from Nacra. Cut it to 12' and drill a hole in the plastic cap. Fits great.


Lee

Keyboard sailors are always faster in all conditions.
Re: A bunch of Nacra Inter 20 questions [Re: timtower] #249942
06/23/12 09:49 AM
06/23/12 09:49 AM
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Portland, Maine
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ThunderMuffin Offline
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Trey knows the line lengths by heart. Give him a call and he'll tell ya.

velocitytrey at gmail.com

Re: A bunch of Nacra Inter 20 questions [Re: ThunderMuffin] #250002
06/25/12 12:43 PM
06/25/12 12:43 PM
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Posts: 50
Hawaii
timtower Offline OP
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Hawaii
Okay, I just shot him an email. Question, does the single line spinnaker system work with the midpole snuffer bag, or do you need a separate line just for the tack?

Tim
N20 - USA 302


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Re: A bunch of Nacra Inter 20 questions [Re: timtower] #250003
06/25/12 12:47 PM
06/25/12 12:47 PM
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Portland, Maine
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ThunderMuffin Offline
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Do yourself a favor and just use separate lines for the tack and halyard.

Re: A bunch of Nacra Inter 20 questions [Re: ThunderMuffin] #250004
06/25/12 01:22 PM
06/25/12 01:22 PM
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Hawaii
timtower Offline OP
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Hawaii
Where/how do I mount a cleat for the tack? I'd probably put it right next to the spinnaker halyard, starboard side, and use a similar cleat. I also need to mount a cleat for my jib furling line. Port side with a similar cleat as the spin halyard?


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