Aluminum Racks

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Caprice
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Aluminum Racks

Post by Caprice » Tue Sep 28, 2010 12:26 am

Hello everybody, first of all i´ll introduce myself, im mauro, and im from argentina.. me and my brother are the owners of the only i14 in all argentinean territory..

you can look it up in youtube as "CAprice i14", and "Carrizal Caprice"..

We are trying now to improve our deck layout and some things more, but first of all we want to built the racks, but here in argentina Carbon Fiber is wayyyy out of everyone budget.. so we are going to make them of aluminum 6061 2" diameter the perpendicular bars, and 3" in parallel.. what do you say about that? are there any pennies with racks of aluminum?

Thanks eeverybody

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rand
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Re: Aluminum Racks

Post by rand » Tue Sep 28, 2010 2:19 am

Many boats had aluminum racks at first. They tend to not hold up very well so folks have moved to carbon.

I'm not sure on section size, perhaps others will chime in, but usually there will be three struts supporting the rack, front/middle/rear.

I don't know what the shipping charges may be, or duties, but there are several companies mentioned on the site that you provide carbon tubes for you.

Is your boat a local design? I see that it was built in Argentina.

Let us know when you are ready to host a worlds :-)
Rand Arnold
International 14 USA 1143
"A Bumblebee Called Kate"
(former US President, former US Measurer)

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Caprice
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Re: Aluminum Racks

Post by Caprice » Tue Sep 28, 2010 3:02 am

yes its a national design i think.. i was thinking in fixing the racks at front and rear, i dont think that middle one is necessary.. im uploading some pics for you to tell me what do you think about the boat..

Image

Image

Image

Image

Image

i dont know if the links to the pics work, thats why i leave you the link here too

http://img15.imageshack.us/i/snapshot6ir.jpg/

http://img43.imageshack.us/i/snapshot5a.jpg/

http://img175.imageshack.us/i/snapshot4d.jpg/

http://img807.imageshack.us/i/barcos2.png/

http://img255.imageshack.us/i/facew.jpg/


i accept every type of critic about the boat.. byeee

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Shu
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Re: Aluminum Racks

Post by Shu » Tue Sep 28, 2010 4:58 pm

If you do use aluminum racks, do not attach them to the boat with carbon fiber cloth, or let them come into contact with anything carbon on the boat. Use fiberglass. The electrolysis that occurs between carbon and aluminum results in the aluminum being eaten away.
Steve Shumaker
USA 1183

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Shu
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Re: Aluminum Racks

Post by Shu » Thu Sep 30, 2010 2:51 am

3" supported by 2" should be more than enough. Nice looking boat. It looks fairly narrow at the sheer, so I'm surprised it wasn't originally built with racks. Do you know how old the boat is, who designed it, built it, etc.?
Steve Shumaker
USA 1183

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Caprice
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Re: Aluminum Racks

Post by Caprice » Thu Sep 30, 2010 4:34 pm

hi, thanks... the boat was build in 2008, in quilmes, buenos aires, designed by a guy called Andres Garibaldi and Federico Gangloff, its full fyber glass, dagger board made of wood, it has an aluminum mast, sails and mast are in new rules i think.. the biaot is a little bit more heavy than usual, its built very hard to avoid break downs.. it is desing to be sail with rackets, but the original owner was a little bit old and not very competitive, so now we are going to put it in nice shape..

what can you tell me about the desing and else?

thanks

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Caprice´s Skipper
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Re: Aluminum Racks

Post by Caprice´s Skipper » Thu Sep 30, 2010 4:48 pm

Hi you all, I´m guido, mauro´s twin brother and caprice´s skipper :D ... mauro , beside the size of the racks remind them thta we only have a combined weight of no more than 135 Kg...

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rand
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Re: Aluminum Racks

Post by rand » Thu Sep 30, 2010 4:53 pm

135 is about what my crew and I weighed when we started. We were fast on the runs :-)

Something happened though, and we are a bit heavier now :D
Rand Arnold
International 14 USA 1143
"A Bumblebee Called Kate"
(former US President, former US Measurer)

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Caprice´s Skipper
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Re: Aluminum Racks

Post by Caprice´s Skipper » Thu Sep 30, 2010 4:54 pm

years happened..LOL... i think that with 3" aluminum racks it can holds us both ok..

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Caprice´s Skipper
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Re: Aluminum Racks

Post by Caprice´s Skipper » Fri Oct 01, 2010 1:10 am

more pics of the boat, please any kind of coments would be really great, cause it´s the only one here in the country and i dont have any kind of i14 to compare it....i think (my opinion) it has a pretty modern shape and it´s built in some new rules,it has selftacking jib,carbon fiber pole,almost 8 mts of mast,and has some mayor difference with the regulars pennies i´ve seen...with the racks and painting( we are on it right now, and we are getting a mainsail made in the same material as the jib) it should be a pretty nice Fourteen...
Comments please..

Thanks for all your help!

http://img8.imageshack.us/img8/8193/p1300027.jpg

http://img198.imageshack.us/img198/905/sadjc.jpg
Here you can see it has a really narrow beam i think compared to some pennies

http://img201.imageshack.us/img201/366/snapshot3m.jpg

http://img691.imageshack.us/img691/6971/snapshot11s.jpg

http://img716.imageshack.us/img716/7320/snapshot14p.jpg

http://img696.imageshack.us/img696/812/p1300028.jpg

the team :D a year ago before buying the "beast"...
http://img814.imageshack.us/img814/1582/dscn0575c.jpg

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Shu
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Re: Aluminum Racks

Post by Shu » Fri Oct 01, 2010 2:42 am

Here are a few comments:
1. You can apply a lot more vang (kicker) tension. This will flatten out the sail, which is good when the breeze is up, but will also give you more power when the wind is moderate. First, however, you must add check stays to keep the vang from breaking your mast. These go from the chainplates where the shrouds are attached to the boat, to a point on the mast about 1' to 1.5' (300 to 450mm) above the gooseneck.

You tend to be sailing with the bow too high, particularly downwind. Unless there are waves that make the boat want to nosedive, you should try to keep the bow just touching the water most of the time.

And for those of you on this forum who've seen me sail my boat, I know, I know.
Steve Shumaker
USA 1183

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Re: Aluminum Racks

Post by Caprice´s Skipper » Fri Oct 01, 2010 4:32 pm

i agree with the vang comment...that day the vang didn´t have the correct tension for a windy day...
one question...i didn´t undestand these "First, however, you must add check stays to keep the vang from breaking your mast. These go from the chainplates where the shrouds are attached to the boat, to a point on the mast about 1' to 1.5' (300 to 450mm) above the gooseneck."
i mean, i did undestand it, but if someone has a pic about it it would be really great..:D

and about the bow, it´s going to be changed or we will add a carbon fibre windsurf mast inside the bow because it goes up with no more than 10 knots, and with almost 20knts the spinnaker goes wayyyyyyyy too high..

One more, once i read about sailing upwind in heavy weather in 14´s, and it said that it was better to have the mainsail trimmed fully and the daggerboard a little bit up...or is it better to get the daggerboard completely down and the mainsail a little bit opened??im talking about the case that you had to go upwind to a bouy and you dont want to bear away and then tack ahead..cause in some cases its better with high winds to bear away a little and not to go upwind as much as the boat can...in my case i have a 1,60 mts daggerboard and it not so narrow like yours, it´s about 1,60mt high X 35cm wide...so, what should be better??

thanks!!!

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rand
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Re: Aluminum Racks

Post by rand » Fri Oct 01, 2010 4:41 pm

You can see the lower shrouds in the picture at the top of the front page.

As for bring up the board, as you go faster, you need less lift, and at the same time your drag increases. So less board, less drag = faster.
Rand Arnold
International 14 USA 1143
"A Bumblebee Called Kate"
(former US President, former US Measurer)

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