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 Catalina 25 Specific Forum
 rigging new headsail		  New Topic  Topic Locked
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Don Brooks
Deckhand

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24 Posts
Initially Posted - 03/28/2008 :  22:12:13  Show Profile
New headsail arrived today( still waiting for main).The question is when changing from a 150 to a 135 with the luff being shorter, on a CDI roller furler should you raise the head to the top leaving more clearance from the deck or keep the tack in the same location as with the 150 genoa.

Don brooks
leilla Dee #1807
Columbia City OR
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Dave5041
Former Mainsheet Editor

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USA
3758 Posts
Response Posted - 03/28/2008 :  23:40:25  Show Profile
Raising the sail does give a little better forward visibility, but it also increases heeling moment. My preference is to keep the tack at the reel. The manufacturer of mine also recommends this approach, but I can't see how it would make any operational difference.
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OLarryR
Master Marine Consultant

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USA
3494 Posts
Response Posted - 03/29/2008 :  08:27:20  Show Profile  Visit OLarryR's Homepage
I recently replaced my sails and when I put on the new 150 vs the old 150, I thought I had set it up pretty much the way the old one was on the CDI furler. The only thing that bothered me a bit was that I seemed to have less visibility under the sail with the way I set it up. For me that was my concern. But the fix is easy and you can always readjust, so one day before I went out for a sail, I noticed that I could still raise the head closer to the top. That provided me a bit more visibility under the sail and a bit less interference that the sail has with the lifelines from the bow pulpit. Maybe it effects the heeling a bit - I mean I can understand why if the sail is lifted a bit that could happen. But if it does, the visibility issue for me outweighed other concerns. Also, I was dealing with the same size replacement. My wiggle room for adjustment is not all that great anyway and perhaps with your 135, you have more adjustment possible. I would set it up similar to the old sail was at the CDI drum unless you want a bit more visibility/clearance from lifeline, etc interferences - then raise a bit and see how you like it. You could always readjust it again if not pleased with the set-up.
Edited by - OLarryR on 03/29/2008 08:31:34
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 03/29/2008 :  10:01:28  Show Profile  Visit Frank Hopper's Homepage
Higher is better performance and better vision. You have given up performance going to 135, get some back.
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Dave5041
Former Mainsheet Editor

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USA
3758 Posts
Response Posted - 03/29/2008 :  10:54:42  Show Profile
In lighter breezes you would probably see better performance from the cleaner air. The physics of the systems says less lift at the same angle of heel or more heel and leeway going to windward with the same lift, that might be significant in heavier breezes. I guess it would depend on your usual conditions an how much you raise it.
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stampeder
Master Marine Consultant

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1608 Posts
Response Posted - 03/30/2008 :  17:30:35  Show Profile
I would be inclined to set it higher.
With respect to heeling moment, I think there are enough other sail controls to keep your boat upright to the degree you want.
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Don Brooks
Deckhand

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24 Posts
Response Posted - 03/31/2008 :  11:46:39  Show Profile
Thanks for reconfirming my gut feeling about setting the sail higher. The Columbia river we sail on can become quite congested in areas so the visibility will be a plus. I hadn't considered the benefit of cleaner air but as was pointed out I'm giving up some performance moving down from a 150 to a 135, so every bit helps.

Don Brooks Leilla Dee #1807
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.