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Mainsheet purchase #220008
09/21/10 01:07 PM
09/21/10 01:07 PM
Joined: Jul 2010
Posts: 172
Anacortes
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I have been told that the max purchase for mainsheet in the F18 rule is 10:1, but I cannot find any mention of a max purchase in the class rules. Does anyone have any input?


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Re: Mainsheet purchase [Re: Sloansailing] #220041
09/21/10 07:14 PM
09/21/10 07:14 PM
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F
F18_VB Offline
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There is no max purchase for F18. There is (or at least was) for the Hobie Tiger class.

Don't go over 10:1. Because of increased drag, it won't be easier to pull and you will have to pull more to do the same work. Even my girlfriend can handle 9:1. Don't be a wuss.

Re: Mainsheet purchase [Re: F18_VB] #220048
09/21/10 08:40 PM
09/21/10 08:40 PM
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We are trying a 2:1 cascade fine tune leading up the boom, which from the 8:1 primary purchase gives the crew 16:1 and leads out from the gooseneck. Not much more friction than just the 8:1. That way the crew is not twisted around trying to trim on the aft sheeting, and it is a lot easier to pull (though more line), which for my wife after sailing 3 long races in 20 TWS is a big deal. Got the idea from a friend with an 18HT who sailed with his girlfriend, it was the only way she could trim the main in breeze.


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Re: Mainsheet purchase [Re: Sloansailing] #220049
09/21/10 09:02 PM
09/21/10 09:02 PM
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Northfield Mn
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The tornado's had a multi cascading system, I don't know the final purchase though.


I'm boatless.
Re: Mainsheet purchase [Re: Karl_Brogger] #220066
09/22/10 03:58 AM
09/22/10 03:58 AM
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Sloan: Can you put up a drawing of your layout?

The standard purchase for the Hobie Wildcat is actually 11:1, I have 9:1 on the Tiger which IMHO is enough.
I know of at least one person who used 12:1, but in the gusts you are sheeting a lot of line.

Re: Mainsheet purchase [Re: Tony_F18] #220071
09/22/10 07:42 AM
09/22/10 07:42 AM
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Melbourne, Australia
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Tornado 16:1

[Linked Image]


Re: Mainsheet purchase [Re: Tony_F18] #220081
09/22/10 10:45 AM
09/22/10 10:45 AM
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Here is a paint drawing. After talking with my wife we may eliminate the cascade, as she says she doesn't need that much purchase. We may go up to 9:1 and simply lead the other end of the mainsheet up the boom to a ratchet (as in the other drawing), to eliminate the aft sheeting for the crew (the ultimate point of all this...)


Attached Files
mainsheet arrangement.jpg (1423 downloads)

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Re: Mainsheet purchase [Re: Tornado_ALIVE] #220084
09/22/10 11:17 AM
09/22/10 11:17 AM
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Originally Posted by Tornado_ALIVE
Tornado 16:1


thought about this but it doesn't solve the problem of aft sheeting for the crew, plus its a lot of stuff that has to run along the boom, its too small to run inside. Also I think this would put too much compression on our little boom. Even when we rigged up the 16:1 fine tune it bent the boom a bit...


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Re: Mainsheet purchase [Re: Sloansailing] #220086
09/22/10 11:37 AM
09/22/10 11:37 AM
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california
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I run 10:1 on my Tiger, with a tapered main it runs great.


Richard Vilvens
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Re: Mainsheet purchase [Re: F-18 5150] #220089
09/22/10 12:18 PM
09/22/10 12:18 PM
Joined: Feb 2004
Posts: 3,528
Looking for a Job, I got credi...
scooby_simon Offline
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Running 9:1 on my F16 single handed.


F16 - GBR 553 - SOLD

I also talk sport here
Re: Mainsheet purchase [Re: scooby_simon] #220117
09/22/10 11:56 PM
09/22/10 11:56 PM
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Posts: 713
WA, ID, MT
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I have 7 to 1 on my F16, 10 to 1 on the F18HT, and 12 to one on the ARC 22, tapered sheets on the latter two, and am happy with all.

Dave

Re: Mainsheet purchase [Re: davefarmer] #220141
09/23/10 04:36 PM
09/23/10 04:36 PM
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Austin, TX
BoK Offline
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Dave has too many boats. smile


Bo Kersey
Corsair 31-1D 276
Re: Mainsheet purchase [Re: scooby_simon] #220161
09/24/10 12:12 AM
09/24/10 12:12 AM
Joined: Aug 2007
Posts: 142
3 weeks Newman WA 1 week Robe ...
Brian P Offline
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3 weeks Newman WA 1 week Robe ...
6:1 on the stingray!!!
as we say in australia "HARDEN THE F$&@ UP!!"


Brian Partridge
STINGRAY 580 "Fantasia"
A Class 585 "FHARKEN A"


YOU CAN'T POLISH A TURD
BUT YOU CAN ROLL IT IN GLITTER!!!!!
Re: Mainsheet purchase [Re: Brian P] #220162
09/24/10 12:15 AM
09/24/10 12:15 AM
Joined: Aug 2007
Posts: 142
3 weeks Newman WA 1 week Robe ...
Brian P Offline
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3 weeks Newman WA 1 week Robe ...
http://www.youtube.com/watch?v=unkIVvjZc9Y
watch this, and then have a think about 16:1!!!!


Brian Partridge
STINGRAY 580 "Fantasia"
A Class 585 "FHARKEN A"


YOU CAN'T POLISH A TURD
BUT YOU CAN ROLL IT IN GLITTER!!!!!
Re: Mainsheet purchase [Re: Brian P] #220164
09/24/10 04:13 AM
09/24/10 04:13 AM
Joined: Sep 2006
Posts: 586
Hobart, Tasmania, Oz.
Dazz Offline
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you mean HTFU Princess!

10:1 tapered sheet is one handed!


C2 AUS 222 by Goodall design
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Re: Mainsheet purchase [Re: Dazz] #220179
09/24/10 08:34 AM
09/24/10 08:34 AM
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Posts: 3,906
Clermont, FL, USA
David Ingram Offline
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smile +1


David Ingram
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Re: Mainsheet purchase [Re: David Ingram] #220196
09/24/10 10:34 AM
09/24/10 10:34 AM
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Ok Ok, enough bashing. 16:1 was to make it easier for my wife to trim upwind in breeze. She says she doesn't need it. So we're going for option B which is a double ended 9:1 with ratchet at the gooseneck. We have a race tomorrow, with most likely a 9 mile beat involved, supposed to blow 15-25. Will see how our new system works.


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Re: Mainsheet purchase [Re: Brian P] #220201
09/24/10 11:14 AM
09/24/10 11:14 AM
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Posts: 1,203
uk
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Originally Posted by Brian P
http://www.youtube.com/watch?v=unkIVvjZc9Y
watch this, and then have a think about 16:1!!!!


Doesn't that tosser sail an F18? I think that i have met him!


Paul

teamvmg.weebly.com
Re: Mainsheet purchase [Re: BoK] #220243
09/24/10 04:09 PM
09/24/10 04:09 PM
Joined: Feb 2004
Posts: 3,528
Looking for a Job, I got credi...
scooby_simon Offline
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Originally Posted by BoK
Dave has too many boats. smile


It is impossible to have too many boats grin


F16 - GBR 553 - SOLD

I also talk sport here
Re: Mainsheet purchase [Re: scooby_simon] #220253
09/24/10 07:44 PM
09/24/10 07:44 PM
Joined: Apr 2007
Posts: 334
Seattle,Wa
Don_Atchley Offline
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Seattle,Wa
LMAO laugh Sloan still hasn't received an answer to his question. This came about because I told him class limit was 10:1. But then we couldn't find anywhere it was documented at 10:1.
Apparently 10:1 is an arbitrary limit based on peer pressure and machismo! crazy



Hobie Tiger 2003
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