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mqp
1st Mate

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USA
46 Posts

Initially Posted - 08/28/2002 : 13:53:55

Is there a chart for optimal stay/shroud lengths and tensions for the C-25 (similar to what they have for the J-24)? If so, please let me know where I can obtain one.

Thanks,
--Minh

Edited by - on

Champipple
Master Marine Consultant

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USA
6855 Posts

Response Posted - 08/28/2002 : 14:27:02

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>
Is there a chart for optimal stay/shroud lengths and tensions for the C-25 (similar to what they have for the J-24)? If so, please let me know where I can obtain one.

Thanks,
--Minh
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>

Good luck... I too wanted to get optimal tensions for the C-25 a few years ago. I haven't even come close. Part of the problem is that the boat, although raced by many, is still essentially a cruiser. With that in mind, most people make sure the stick is straight, and crank her down tight.

I was meaning to take record loos tension guage settings relative to wind and sail etc. However the loose tension guage is now somewhere between the shore and the water intake crib for the city of cleveland...about 3 miles out.

The other main problem is that because most people cruise this boat, they don't think about changing the shroud and or stay tensions relative to the prevailing wind of the day. Barring a miracle, I think the only person that might have numbers is Derrick. Please let me know what you come up with though, because I would sure like them too.

dw

Duane Wolff
"The Flying Wasp"
C-25, #401 std,sk
Chief Measurer C-25/250 National Assn.
<img src="http://im1.shutterfly.com/procserv/47b2d603b3127cce9f858f0ef3ef0000001010" border=0>

Edited by - Duane Wolff on 08/28/2002 14:28:24

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Derek Crawford
Master Marine Consultant

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USA
3321 Posts

Response Posted - 08/28/2002 : 17:36:22

Minh - first, remember that I'm a hard core racer!
I keep 8" - 10" sag on the forestay when the vang, mainsheet and backstay are NOT tensioned.
The backstay waves in the breeze when the adjuster is completely off.
The uppers read 30 on the front of the Loos guage (I never bother to convert to the scale on the back). My forward lowers are at 25, and the aft lowers barely register on the guage (probably about 20).
The most important thing is to have the mast in column and not to have the mast tip hook to one side or the other.
After 10 years of racing "This Side Up" (TRFK) and much experimentation, I've found that this combination is fastest for any wind up to about 12k (and especially fast off the wind - in fact I drive the bigger boats crazy.) Above 12k I put an extra turn on each shroud and if it's going to blow 18+ I put in another tightening turn.
Derek
P.S. Duane - you can use them too!<img src=icon_smile_wink.gif border=0 align=middle>

Edited by - on

Champipple
Master Marine Consultant

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USA
6855 Posts

Response Posted - 08/29/2002 : 08:15:21

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>

P.S. Duane - you can use them too!<img src=icon_smile_wink.gif border=0 align=middle>

<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>

Derek,

After last nights race in 6 footers on the evelyn 32, which included 2 sail changes an almost broach and a 185 degree wind shift, I think I'll stay on land for a while (read a day or two). But I will check mine as soon as I venture back out on the Wasp..however, what size loos guage are you using. When I replaced the stays, we upped the diameter so I want to be able to convert your tensions to the bigger size guage.

Duane

PS: no one converts to the numbers on the back. The evelyn is a nice lady, her numbers are 38 - 24 - 35 from the outside shrouds in!

Duane Wolff
"The Flying Wasp"
C-25, #401 std,sk
Chief Measurer C-25/250 National Assn.
<img src="http://im1.shutterfly.com/procserv/47b2d603b3127cce9f858f0ef3ef0000001010" border=0>

Edited by - on

Derek Crawford
Master Marine Consultant

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USA
3321 Posts

Response Posted - 08/29/2002 : 09:35:35

Duane - I'm using the smaller guage, I think it's Type A.
Derek

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Steve Milby
Past Commodore

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USA
5902 Posts

Response Posted - 08/29/2002 : 18:11:28

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>Minh - first, remember that I'm a hard core racer! <hr height=1 noshade id=quote></BLOCKQUOTE id=quote>

Now there's an understatement!<img src=icon_smile_big.gif border=0 align=middle>

Steve Milby "Captiva Wind" C-25 T/FK #2554

Edited by - on

Derek Crawford
Master Marine Consultant

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USA
3321 Posts

Response Posted - 08/29/2002 : 19:06:56

Steve - I think it takes one to know one!<img src=icon_smile_approve.gif border=0 align=middle>
Derek

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