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Old 18-10-2014, 12:44   #16
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Re: Weather Helm . . . Can it be Lessened ?

Many of the early Tayana 37`s also had the same issue.
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Old 24-10-2014, 02:43   #17
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Re: Weather Helm . . . Can it be Lessened ?

Weather helm is caused by the mainsail having more power than the head sail easy fix,reef your mainsail.
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Old 24-02-2015, 07:13   #18
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Re: Weather Helm . . . Can it be Lessened ?

As I own a 1984 Jason 35, I love this thread.

Any of you fellow Jason 35 owners know the hull speed of this fine vessel?

And by the way, I'd love to talk to any other Jason 35ers about their- and my- boat: design, performance, re-fits, modifications, and such. Mine needs much work yet as the mast has never been stepped. Got a lot of plans, as well as some 'innovations' I'm playing around with in my head. I already installed new sole to coach top bulkheads between the salon and galley (sandwiched them to the existing waist-high bulkheads).

So, feel free to contact, if you wish.

Thanks.
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Old 24-02-2015, 07:16   #19
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Re: Weather Helm . . . Can it be Lessened ?

And for the sake of- my boat's name is Jenna Simone.
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Old 26-02-2015, 12:54   #20
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Re: Weather Helm . . . Can it be Lessened ?

The waterline length is about 28 feet. The square root of 28 is 5.3, which gives the hull speed according to Froode's Law. That is about the fastest my Jason, Norwegian Steam, goes under power. On a passage from Mexico to Hawaii, we had a couple of 160 mile days.

If you have not already done so, you might check out the "Jason 35 Sailboats" Google Group.
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Old 26-02-2015, 13:18   #21
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Re: Weather Helm . . . Can it be Lessened ?

Actually, I believe that theoretical hull speed is the square root of the LWL X 1.33.

Brad
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Old 26-02-2015, 20:41   #22
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Re: Weather Helm . . . Can it be Lessened ?

5.3, huh? Well, that's a bit disappointing. Was hoping for at least 6 & a half. Oh well. Thanks, Alan.

So, Alan, you have a Jason 35? If it's not too much trouble, how does she handle? Do you like her, is she one of the later one's with the mast moved fwd?

Any info you can give on the Jason 35 would be appreciated. Thanks.
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Old 26-02-2015, 20:46   #23
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Re: Weather Helm . . . Can it be Lessened ?

Hey Alan. Sorry, dip-head that I am, I didn't read through the thread. Just did, got your post on the Jason 35. Thanks.
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Old 26-02-2015, 22:06   #24
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Re: Weather Helm . . . Can it be Lessened ?

Quote:
Originally Posted by Jace View Post
5.3, huh? Well, that's a bit disappointing. Was hoping for at least 6 & a half. Oh well. Thanks, Alan.
Theoretical hull speed is the square root of the WaterLine x 1.34. That works out to 7.09 nmph or a 170 nmpd. It's possible to reach that speed but takes near perfect conditions on a reach.
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Old 27-02-2015, 09:23   #25
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Re: Weather Helm . . . Can it be Lessened ?

Thanks roverhi, for the numbers. I was just looking for hull potential.

I know that actual overall time spent crossing from one point on the map to another is due vastly and far, far more to the skill of the captain rather than the shape and contours of the hull, given relatively similar boat lengths. The racing ground for a sailboat is not a straight strip of flat asphalt. The variables are innumerable.

It would just be nice to know that I don't have an unusually slow boat.

But, even if I did, oh well. Jenna Simone has so many rough weather attributes- which as a, hopefully, world-cruiser- are of much more value to me than quickness. And as such, I'm more than elated that she is the vessel God has gifted me with. And since I'm 6' 3", the wonderful ability to walk from galley to V-berth fully upright is one of them.

Hallelujah!
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