Return to Hobie.com
Hobie Forums
It is currently Fri Mar 29, 2024 5:08 am

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 13 posts ] 
Author Message
 Post subject: TI prototype jib size ?
PostPosted: Tue Feb 21, 2012 4:14 pm 
Offline
Site Rank - Captain

Joined: Thu Feb 02, 2012 9:12 pm
Posts: 42
Location: South Florida
I was told there was someone from the Hobie company sailing a TI at the Everglades Chalenge race, the boat had a prototype experimental jib.
Does anyone know the measuments and area size of this jib?


Top
 Profile  
 
PostPosted: Tue Feb 21, 2012 8:12 pm 
Offline
Site Rank - Old Salt

Joined: Tue Jun 19, 2007 6:14 pm
Posts: 3323
Location: South Florida
Gil,

The Hobie engineer/designer Jim Czarnowski can be seen in a post of mine.
http://www.hobiecat.com/forums/viewtopic.php?f=71&t=34266

He is sitting on a Hobie AI tandem and you can see a furled jib. The photo was taken at last year's EC. My guess is he will be at the EC2012 (Mar 2-3 in Ft Desoto State Park) and will probably be sporting a jib again. Are you planning to be there?

Keith

_________________
2015 AI 2, 2014 Tandem

"Any intelligent fool can make things bigger and more complex ... It takes a touch of genius and a lot of courage to move in the opposite direction." A. Einstein

"Less is more" Anon


Top
 Profile  
 
PostPosted: Wed Feb 22, 2012 5:25 am 
Offline
Site Rank - Admiral

Joined: Sun Jan 16, 2011 9:18 pm
Posts: 287
Location: Virginia Beach, VA
I had a jib on my TI last year. I used a Newport 16 jib that fit very well. You can probably look up the dimensions on line. Unfortunately i sold my Newport. Don't forget to use some kind of stays and only in light weather. The mast support will get overloaded...

Look 6:11 minutes into this video...

[youtube]http://www.youtube.com/watch?v=BP8y7UOnYw0[/youtube]

_________________
Paul
DogsLife
2011 Adventure Island


http://dogslifeadventures.blogspot.com/


Top
 Profile  
 
PostPosted: Wed Feb 22, 2012 5:21 pm 
Offline
Site Rank - Captain

Joined: Thu Feb 02, 2012 9:12 pm
Posts: 42
Location: South Florida
Keith I do not plan to be at the EC, the reason I ask is because I have a sewing machine and planing to make a jib for use in light winds as suggested by Paul. I have a good idea for a rotating mast top device for the jib forestay.
I guess the size of the TI jib prototype is a well kept secret. I will look up the jib on the Newport 16 but having the Hobie jib size would take out all the guess work. :?:

Gil


Top
 Profile  
 
PostPosted: Wed Feb 22, 2012 5:37 pm 
Offline
Site Rank - Captain

Joined: Thu Feb 02, 2012 9:12 pm
Posts: 42
Location: South Florida
Chekika wrote:
Gil,

The Hobie engineer/designer Jim Czarnowski can be seen in a post of mine.
http://www.hobiecat.com/forums/viewtopic.php?f=71&t=34266

He is sitting on a Hobie AI tandem and you can see a furled jib. The photo was taken at last year's EC. My guess is he will be at the EC2012 (Mar 2-3 in Ft Desoto State Park) and will probably be sporting a jib again. Are you planning to be there?

Keith


I have friends in the EC race, perhaps some jib espionage is in order :wink:


Top
 Profile  
 
PostPosted: Wed Feb 22, 2012 6:37 pm 
Offline
Site Rank - Captain

Joined: Thu Feb 02, 2012 9:12 pm
Posts: 42
Location: South Florida
Look 6:11 minutes into this video...

wow I just saw your super cool video for some reason I could not see it before , any how the jib looks awesome, thanks much for sharing it.

Gil


Top
 Profile  
 
PostPosted: Fri Feb 24, 2012 5:42 am 
Offline
Site Rank - Admiral

Joined: Sun Jan 16, 2011 9:18 pm
Posts: 287
Location: Virginia Beach, VA
I actually made a new jib for my TI out of a old main sail that I had. It is not as nice as the Newport Jib because the main was slightly blown out. I do find it easier to cut down a old sail instead of starting from scratch. You already have the curvature built in. Because the new sail has more draft it is a nice down wind sail but does not point well. For the EC I will use my AI this year. I found a small nylon jib on E-Bay that I will use in down wind light air.

_________________
Paul
DogsLife
2011 Adventure Island


http://dogslifeadventures.blogspot.com/


Top
 Profile  
 
PostPosted: Fri Feb 24, 2012 8:55 am 
Offline
Site Rank - Captain

Joined: Thu Feb 02, 2012 9:12 pm
Posts: 42
Location: South Florida
DogsLife wrote:
I actually made a new jib for my TI out of a old main sail that I had. It is not as nice as the Newport Jib because the main was slightly blown out. I do find it easier to cut down a old sail instead of starting from scratch. You already have the curvature built in. Because the new sail has more draft it is a nice down wind sail but does not point well. For the EC I will use my AI this year. I found a small nylon jib on E-Bay that I will use in down wind light air.


What Size is the Jib you made ?
thanks.

Gil


Top
 Profile  
 
PostPosted: Fri Feb 24, 2012 7:12 pm 
Offline
Site Rank - Admiral

Joined: Sun Jan 16, 2011 9:18 pm
Posts: 287
Location: Virginia Beach, VA
I got my dimensions right off the boat. Stretched a rope from the mast attachment point to the bow. Then I estimated the leech and foot based on where I wanted the clew, slightly aft of the mast. Then I transferred it to the old sail that was larger than needed. I fit the sail triangle on the old main sail for the best cloth pattern. Make your dimensions slightly less than measured. The sail will stretch and the mast will bend. Other thing to remember is that the luff and leach can not be a straight line due to the sag. I used a long pice of molding as a batten to mark a slight inward curve. You Tube has some good sail making Videos: this is just one of the series;

[youtube]http://www.youtube.com/watch?v=GD8z720Q7fY[/youtube]

_________________
Paul
DogsLife
2011 Adventure Island


http://dogslifeadventures.blogspot.com/


Top
 Profile  
 
PostPosted: Fri Feb 24, 2012 9:04 pm 
Offline
Site Rank - Captain

Joined: Thu Feb 02, 2012 9:12 pm
Posts: 42
Location: South Florida
ok but what is the size of the jib

thanks


Top
 Profile  
 
PostPosted: Sat Feb 25, 2012 3:59 am 
Offline
Site Rank - Old Salt

Joined: Sat Nov 05, 2011 1:58 am
Posts: 2893
Location: Forster, NSW, Australia
I thought he mentioned that you measure from bow to masthead, and then from bow to mast base, and then build in slight curvature in the luff and leach, making your dimensions slightly less than measured. They aren't numbers, but they seem pretty descriptive to me. I would add that you want the clew to be about 3 feet above the base of the mast to enable a fair lead for the sheet back to midships

_________________
Tony Stott
2012 Tandem Island "SIC EM" with Hobie spinnaker


Top
 Profile  
 
PostPosted: Sat Feb 25, 2012 7:18 am 
Offline
Site Rank - Admiral

Joined: Sat Feb 20, 2010 12:34 pm
Posts: 252
Is the tape to reduce the hull flex around the hatch opening when using your jib?

_________________
Image


Top
 Profile  
 
PostPosted: Wed Feb 29, 2012 9:55 am 
Offline
Site Rank - Captain

Joined: Thu Feb 02, 2012 9:12 pm
Posts: 42
Location: South Florida
Paul, again I had not seen your reply when I ask you about the jib size.
The video is very helful I'm working on the jib right now. thanks much

Gil


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 13 posts ] 

All times are UTC - 8 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Jump to:  
© Hobie Cat Company. All rights reserved.
Powered by phpBB® Forum Software © phpBB Group