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 Headsail dimensions?		  New Topic  Topic Locked
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Headhunter
1st Mate

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74 Posts
Initially Posted - 06/21/2004 :  14:21:50  Show Profile
Anyone know offhand the dimensions of a 155% for a Cat 25 TM (1986 FK)...Was thinking about surfing around to take a look at used headsails and realized I'm not sure of the dimensions.
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 06/21/2004 :  14:46:29  Show Profile  Visit Frank Hopper's Homepage

The I is the luff or hoist and the J is the 100% foot. Sails are cut with varying clew angles, it will affect the sheeting angles of a used sail that was cut for another boat. A sail from a fractional rig will often have a higher clew when put on a mast head rig.
Edited by - Frank Hopper on 06/21/2004 14:51:36
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Headhunter
1st Mate

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74 Posts
Response Posted - 06/21/2004 :  14:53:02  Show Profile
Thanks fhopper, but I was more looking for approx. luff, leech, and foot lengths...Seems that's how they're listed on used sail sites. I can work out the luff (A squared + B squared = C squared) to ger approx. 32'6", but was looking to see if anyone offhand knew the other standard dimensions.
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Headhunter
1st Mate

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Response Posted - 06/21/2004 :  14:57:44  Show Profile
Sorry fhopper -- I saw the insert but not the add'l info at the bottom you had included before I replied. That's all good info.
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 06/21/2004 :  16:25:06  Show Profile  Visit Frank Hopper's Homepage
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Headhunter</i>
<br />Sorry fhopper -- I saw the insert but not the add'l info at the bottom you had included before I replied. That's all good info.
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
Actually it is fairly poor info, you are right the I is not the hoist, it is the vertical and not the diagonal. I would call gary at Ulman Ventura (805) 644-9579 (800) 248-2892 or any other sail loft for the exact hoist. They will be happy to share the info.
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PZell
Admiral

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USA
548 Posts
Response Posted - 06/21/2004 :  16:37:29  Show Profile
This may be helpful too&gt;

LP explained. A great deal of confusion exists as to the meaning of the percentage number of a Genoa or smaller headsail. For instance a sail may be described as a 150% Genoa. Your headsail size is defined by another dimension called the LP (luff perpendicular). Luff perpendicular is measured as the distance from the clew to the luff at an angle of 90 deg. to the luff. This distance divided by "J" * 100 is the percentage size. A Catalina 27 with a standard rig has a J measurement of 11.25 ft. A 150% genoa for this boat would have a LP measurement of 11.25 * 150/100 = 16.875 ft. A 100% sail would have an LP of 11.25 feet.
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Gary B.
Admiral

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USA
969 Posts
Response Posted - 06/21/2004 :  21:17:15  Show Profile
Hope this helps:

I measured a 153% headsail and got: 28'10" luff and 17' on foot.

My 150 measured 29' on the luff and 16'4" on the foot.

Interestingly, my new 135% measures 29' x15'2"

Hope this helps. I did not measure the LP...


Gary B.

When a used sailmaker lists "hoist", I assumed they meant the luff. I have bought a couple of used sails and not been surprised....
Vice Commodore
Edited by - Gary B. on 06/21/2004 21:20:09
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Headhunter
1st Mate

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74 Posts
Response Posted - 06/22/2004 :  09:08:15  Show Profile
Gary B. - Do you have a tall rig or a standard rig? I see in the class rules that the luff cannot exceed 32' on a tall rig...I would assume that you have a standard rig with your measurements.

Thanks for all the info, fellas
Edited by - Headhunter on 06/22/2004 09:27:12
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Bill Holcomb
Admiral

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USA
769 Posts
Response Posted - 06/22/2004 :  10:47:39  Show Profile
Here's a link to The Sail Warehouse
http://thesailwarehouse.com/cgi-bin/web_store.cgi?page=storeframe.html&cart_id=
You can specify the brand and model of the boat, then the sail you are interested in. Their website then selects sails to fit and gives you the specs.

If you are going through a loft where the sailmakers will custom make your sail, the dimensions for luff, leach and foot change because the clew position can be raised or lowered. A higher clew will result in a relatively shorter leach and longer foot. A "deck sweeper" will have a relatively longer leach and shorter foot.

Bill Holcomb - C25 Snickerdoodle #4839
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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts
Response Posted - 06/22/2004 :  12:02:39  Show Profile
Check out this link to the [url="http://www.cruisingdirect.com/InStockCatalinaSails.htm"]Cruising Direct catalog page for C25 sails.[/url] There you will find C25 standard/tall rig sail measurements, including L/P, for both hanked on and furled sails.
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Gary B.
Admiral

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USA
969 Posts
Response Posted - 06/22/2004 :  12:50:32  Show Profile
Crud.....! Sorry...I did not see the TM on your post. You're right; my sail measurements are for a standard rig.

Gary B.
Vice Commodore
s/v Encore! #685 SK/SR
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
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