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Over Lapping Jib vs Non Over Lapping Jib

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(@john5583)
Posts: 877
Master Chief Registered
Topic starter
 
[#27145]

Looking at the jib design on the older boats, 6.0, 5.8,5.5 etc.... and on the new boats with self tackers I20, F-18, Infusion, Wildcat etc..... Are the new boats giving up a little sail performance on the older boats with the overlapping jib or is the newer sail plan more efficient with getting flow on the backside of the main?


 
Posted : August 2, 2010 1:12 pm
(@Anonymous 39709)
Posts: 913
 

B mark is gone, you don't need one anymore dumbass. 'Course you wouldn't know that since you don't race anymore.


 
Posted : August 2, 2010 1:35 pm
(@thomm124)
Posts: 240
Member
 

Check out the 2010 America's Cup. BMW creamed the competition which basically used old school technology. (more sail area) BMW was using a newly designed movable (high aspect ratio) wing. When it comes to technology, old school rarely trumps what's new.

Challenger USA wins the America's Cup Match 2-0!

http://www.cupinfo.com/en/33teampage-main.php

http://bmworacleracing.com/en/interactive/images_2008/gallery_training_2010/index.html


 
Posted : August 2, 2010 1:36 pm
(@thomm124)
Posts: 240
Member
 
Originally Posted by TeamChums
B mark is gone, you don't need one anymore dumbass. 'Course you wouldn't know that since you don't race anymore.

Sometimes the Alter Cup Qualifier will use a

B

Mark if there is a mixed bag of boats to help even things up a bit.


 
Posted : August 2, 2010 1:55 pm
(@john5583)
Posts: 877
Master Chief Registered
Topic starter
 
Originally Posted by TeamChums
B mark is gone, you don't need one anymore dumbass. 'Course you wouldn't know that since you don't race anymore.

Thanks for pointing that out Team Chumps!


 
Posted : August 2, 2010 1:58 pm
(@beachsailor)
Posts: 450
Mate Registered
 

Depends on the type of sailing. Distance races where there is a lot of reaching the overlap may be an advantage. Fun sailing with lots of straight line sailing a large overlapping jib is very nice when compared to rigging and running a spin.


 
Posted : August 2, 2010 2:37 pm
(@Anonymous 38725)
Posts: 5859
 

Many years ago near the end of the Mug race, I was caught from behind and passed by a Nacra 6.0. I was on my I20, too high a reach for the spinny, he walked by us to leeward.

So, if there is a reaching leg that is too high for the spin, yes, those big old jibs will be faster than the little blade jibs all the spin boats run. But without a B mark, no.


 
Posted : August 2, 2010 4:25 pm
Jake Kohl
(@jake)
Posts: 11744
Three Star Admiral Registered
 

When the 6.0NA gets a chance to crack off a little from close hauled and let that jib breath, it will fly.


 
Posted : August 2, 2010 4:38 pm
(@Anonymous 39709)
Posts: 913
 

I had to bust John's chops a little. My H21se had a HUGE jib and when you cracked it off a little, it was like the turbo charger kicked in. The overlapping jib does make a difference when beam reaching....till it's time to de power.


 
Posted : August 2, 2010 5:09 pm
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