[C320-list] FW: Re: Single Line Reefing

Thu Jun 8 19:50:38 PDT 2006

I can't wait for my in-boom furler!

cuba libre 2
--------------------------
Regards,
OD

Sent from my BlackBerry Wireless Handheld

----- Original Message -----
From: C320-List-bounces
Sent: 06/08/2006 04:42 PM
To: C320-List <C320-List at catalina320.org>
Subject: Re: [C320-list] FW: Re:  Single Line Reefing

Dave:  Yours is just like my '99 boat except that line 1 does not end at 
the upper cringle.  Instead it goes through this cringle (port to 
starboard) and then back down to be tied off at a padeye on the 
starboard side of the mast, just below the gooseneck.  This additional 
part doubles the purchase on the luff, while adding a small amount of 
friction.  The padeye also keeps the luff cringle close to the mast once 
you pull it down, which relieves stress on the sail slides near the 
reefing cringle.

The advantage of this system over other single line systems that only 
use one piece of line is that you don't have to pull as much line 
through the forward cringle when you reef.  So it has less friction than 
other single line systems that really use only one piece of line.  This 
means it doesn't require the blocks on the sail that everyone else is 
talking about.  It would work even better if the double block inside the 
boom were higher quality.  But it works well for me and so I haven't 
bothered to change it.

Another advantage of this system is that you don't have as much 
unrigging to do if you want to remove the mainsail.  Just untie the 
forward and aft lines separately and remove from the cringles.

The system is NOT the same as what is pictured in the manual for my '99 
boat, which is a bizarre system that does not have the reduced friction 
advantages I described above.

OK, now someone will say that they think the block inside the boom is to 
add purchase.  Wrong, wrong, wrong.  It doesn't.  But it does reduce the 
overall friction in the system, IF it's rigged as described above.  It's 
almost useless if you rig it the way the manual suggests.

Dave Anderer wrote:
> Ok, now I'm more confused than usual.  My rig - which I assumed to be 
> original - is significantly different than what is described in this 
> article.
> 
> I've got one set of reef points, and a single-line system, but with 2 
> lines.
> 
> Line one goes from the port clutches up to the gooseneck, in the boom, 
> around a double-pulley in the boom, back out the gooseneck, down to a 
> block mounted on the mast (where the vang is mounted to the mast), then 
> up through a cringle on the luff, and through a 2nd (higher) cringle on 
> the luff where it is knotted.
> 
> Line 2 is secured at the outboard end of the boom, run inside the boom 
> to the double-pulley, and back out the end of the boom to a cringle on 
> the leech where it is knotted.
> 
> Was that the factory-rigging on a '99?  Seems awfully convoluted.  The 
> modified 380 scheme seems significantly better.
> 
> [Ah ha!  Here is the rig I have:  
> http://www.catalina320.org/gallery/Alternative-Route/IMG_0226  Was that 
> how it came from the factory - I'm guessing not based on the comments 
> with this image.]
> 
> 
> 
> Karl Mielenhausen _/) wrote:
>> Better yet, this article (and many other fine technical articles) are 
>> on the C380IA website....
>>
>> http://www.catalina380.org/article_display.asp?ID=114
>>
>>
>>
>> A nicely organized resource for us also!!!!
>>
>>
>>
>> Karl Mielenhausen
>>
>> 2000 C320 Hull#690 "Silver Lining"
>>
>> New Bern, NC
>>
>> http://members.cox.net/mielen/
>>
>>
>>
>> From: Walter burnett [mailto: selkie2003 at yahoo.com]
>>
>> To: C320-List at catalina320.org
>>
>> Date: Wed, 7 Jun 2006 13:56:05 -0700 (PDT)
>>
>> Subject: Re: [C320-list] Single Line Reefing
>>
>>
>>
>> Irv,<br>   <br>  The pulley idea originally came from a Mainsheet 
>> article in the C380 tech section a year or two ago. If you have the 
>> back issues, you should be able to find it.  You rig the 320 reefing 
>> system excatly the same way.  Works great.<br>   <br>  Walter<br>  
>> Selkie #887<br><br>Irv Grunes <igrunes at comcast.net> wrote:<br>  
>> Stan,<br>Thanks for the reply. Again yours is an elegant solution and 
>> the fact that<br>everything is run through pulleys elimintes a lot of 
>> the friction.<br><br>If one would do the same to the leech luff, 
>> theneverything would be throgh<br>pulleys. Thats just a 
>> thought.<br><br>Did you do anything to the mainsail to protect it from 
>> any chafe by the<br>block working against it?<br>When the sail is down 
>> and furled, that block must just sit there and not<br>bother the sail 
>> cover.<br>As you can see I am trying to visualise any and all 
>> problems.<br>I realised that it will be necessary to change the 
>> reeving on the mast base<br>blocks so that the existing block will be 
>> the last block before the line<br>goes into the boom.<br>Irv 
>> Grunes<br>Isle of Wight #851<br><br><br>-----Original 
>> Message-----<br>From: 
>> C320-List-bounces at catalina320.org<br>[mailto:C320-List-bounces at catalina320..org]On 
>> Behalf Of Stanley<br>Rogacevicz<br>Sent: Wednesday, June 07, 2006 1:10 
>> PM<br>To: C320-List at catalina320.org<br>Subject: Re: [C320-list] Single 
>> Line Reefing<br><br><br>Irv,<br>I figured my explanation might come up 
>> short. The block stays with/at the<br>same level (well, maybe a couple 
>> inches below at most) as the reefing<br>cringle it replaced because 
>> the little line that passes through the<br>cringle/gromett is only 
>> long enough for attachment. When reefed the block<br>would end up in 
>> the boom area but since it is being pulled down by the block<br>at the 
>> mast base that's fine. My addition did involve switching a 
>> couple<br>block leads around.<br>I'm assuming as did a couple other 
>> posters that you already have a single<br>line reefing standard on 
>> your boat --- I did *-- I just wanted to reduce<br>the friction of the 
>> line passing through the reefing cringle by -<br>replacing - it with a 
>> block = less friction.<br>No... I don't remember the block I used. 
>> Many of my projects are simply<br>find what looks right and make it 
>> work.<br>Stan<br><br>>>> igrunes at comcast.net 6/7/2006 12:48 PM 
>> >>><br>Thank you Stan.<br>I think its a very elegant way to mount that 
>> block.<br>If you can remember the block you used it would be 
>> appreciated.<br>Also, with the sail fully raised about where did the 
>> block finally rest?<br>Did the block rest on the sail or was it at or 
>> just above the boom?<br>How did you keep the block from flopping 
>> around or did the fact that the<br>reefing line was through the block, 
>> it kept it from flopping too much.<br><br>If I picture it correctly, 
>> there is about two feet from the sail tack to the<br>luff reefing 
>> cringle, then you would only need to have that two feet to pull<br>it 
>> down. I assume there was enough room below the boom to pull it 
>> down.<br>Thanks for the reply.<br><br>Irv Grunes<br>Isle of Wight 
>> #851<br><br><br><br>-----Original Message-----<br>From: 
>> C320-List-bounces at catalina320.org<br>[mailto:C320-List-bounces at catalina320..org]On 
>> Behalf Of Stanley<br>Rogacevicz<br>Sent: Wednesday, June 07, 2006 
>> 11:42 AM<br>To: C320-List at catalina320.org<br>Subject: Re: [C320-list] 
>> Single Line Reefing<br><br><br>Irv,<br>I did it, but it's one of the 
>> very few things I never posted a<br>picture of and it's a bit hard to 
>> describe. I used a large SS washer<br>(too big to pass through the 
>> grommet) with a small hole on one side<br>attached to a small block on 
>> the other side of the sail grommet. I<br>passed a small line (about 
>> 3/16) through the washer, then through the<br>grommet, then through 
>> the body of the block, then back through the<br>grommet, back through 
>> the washer, and then tied the two ends together<br>with a big enough 
>> knot to keep it from passing through the washer. Not<br>very elegant, 
>> but by not using any sharp metal objects for connections<br>it didn't 
>> damage the sail and did the job.<br>Stan<br>(formerly) Christy 
>> Leigh<br>c320 #656<br>Wickford/Narragansett Bay RI<br><br>>>> 
>> igrunes at comcast.net 6/7/2006 11:17 AM >>><br>Guys,<br>There was a 
>> thread a year or so back about single line reefing. I 
>> just<br>sent<br>the following to my boat partner.<br>Is there any 
>> album that shows what people used for the luff 
>> pulley<br>described<br>below and has anyone actually done this?.<br>I 
>> don't remember it right now, but there is supposed to be a way 
>> to<br>make<br>reefing a single line control by addig a pulley to the 
>> main luff<br>reefing<br>cringle. Then reeving the port side reefing 
>> line from the cockpit<br>stopper to<br>the deck mast pulley(where it 
>> now is), up through the new luff reefing<br>pulley, down to a new mast 
>> base pulley, into the boom then to the<br>leech<br>cringle as we now 
>> have it, then to tie off at the boom. The key being<br>a<br>pulley on 
>> a strap of some kind on the luff reefing cringle. The 
>> main<br>objection to this as I remember it, was all of the resistance 
>> that is<br>encountered by the lines going through all of the pulleys. 
>> This would<br>eliminate the need to go on deck in possible bad weather 
>> to reef the<br>main.<br>Irv Grunes<br>Isle of Wight 
>> #851<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> 
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> 

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