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Catalina/Capri 25/250 Sailor's Forums

Catalina 25 Specific Forum

Jiffy reefing system

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gracer
1st Mate

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USA
39 Posts

Initially Posted - 07/24/2009 : 14:21:47

Can anyone send me a diagram for the proper set up of the jiffy reefing system. I seemed to have forgotten how to rig it

Bob

Bob Grace
Castleton, Vermont
1984 Swing Keel "Sara"

Edited by - on

pastmember
Master Marine Consultant

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2402 Posts

Response Posted - 07/25/2009 : 19:38:04

There is no proper way, there are a hundred ways. People who are happy with their reefing system are happy because they have created one that meets their needs. Figure out what you want it to do, buy the hardware you need and build it. Remember the stock rigging changed over years and was always cheap and minimal. You can do better.

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John Russell
Master Marine Consultant

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USA
3444 Posts

Response Posted - 07/25/2009 : 20:11:07

Of course, Frank's probably right but, if you look in the owner's manual for the C250, (Under "Manuals & Brochures" in the upper left of this page) there is a diagram of a suggested system. That will given you a jumping off point. You can also search the forum for others' ideas. This has been discussed a lot here so, you'll find lots of ideas.

Edited by - on

Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts

Response Posted - 07/25/2009 : 20:12:21

Here is Catalina's description for 2-line reefing (from the Manuals and Brochures section here):

The single-line version simply runs the line from the aft end of the boom past the cleat to a turning block at the forward end of the boom, then up through the reef tack grommet and down to a cleat on the other side of the mast--or through mast-base blocks and a deck organizer back to a clutch on the coachroof by the cockpit.

I prefer the two-line version so the tack end can be set first, allowing good tension on the clew without pulling the lower slug out of the mast slot. Both lines shown can also be led back to the cockpit.

Edited by - Dave Bristle on 07/25/2009 20:15:42

dflynnatc
1st Mate

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USA
65 Posts

Response Posted - 06/17/2010 : 09:43:14

Dave, searched and been interested in this thread. In the picture presented, what then do the middle grommets do? Do you then just use some ties on them? Or is the two line just for the tack and clew?

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Dave Bristle
 Here is Catalina's description for 2-line reefing (from the Manuals and Brochures section here):

I prefer the two-line version so the tack end can be set first, allowing good tension on the clew without pulling the lower slug out of the mast slot. Both lines shown can also be led back to the cockpit.

<hr height="1" noshade id="quote"></blockquote id="quote">

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Dave5041
Former Mainsheet Editor

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USA
3758 Posts

Response Posted - 06/17/2010 : 12:46:32

The middle grommets are for loosely tying the bunched sail, not that everyone does.

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sfsmith
Navigator

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USA
123 Posts

Response Posted - 06/17/2010 : 14:23:18

I use pieces of shock cord, knotted on either side of the sail. When they're tied under the boom they tidy up the sail, but there's still some give so the grommets don't tear out.

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skrenz
Captain

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USA
351 Posts

Response Posted - 06/17/2010 : 15:33:31

The latest issue of SAIL magazine has a good article discussing the pros and cons of single verses double line reefing. It offers some suggestions for cutting down on line friction and offers an intriguing way of improving single line reefing. The article is by Brian Hancock and is under BoatWorks, Upgrades.

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dflynnatc
1st Mate

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USA
65 Posts

Response Posted - 06/17/2010 : 18:39:32

This really helps..... thank you SO much.... makes more sense!
<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Dave5041
 The middle grommets are for loosely tying the bunched sail, not that everyone does.
<hr height="1" noshade id="quote"></blockquote id="quote">

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Tom Gauntt
Navigator

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204 Posts

Response Posted - 06/18/2010 : 11:04:06

Here is a good link from Mauripro sailing about various rigging techniques from Harken. Gives some good solutions to vangs, outhauls, reefing, cunning hams, spinnakers, etc.

http://www.mauriprosailing.com/Harken/harken-trimming-systems.htm

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Voyager
Master Marine Consultant

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USA
5377 Posts

Response Posted - 06/19/2010 : 09:28:03

Not surprisingly, I use the reefing system drescribed by Dave Bristle, DPO, Passage, shown above.

I noticed a slight inaccuracy in the original Catalina illustration that is, nonetheless, quite important for sail shape when reefed.

Anybody who plans to install their own reefing system on a C-25 would be well advised not to take the picture's geometry as gospel.

The angle that the cheek block makes with the reefed clew grommet should be such that it pulls the clew eye down AND AFT, in the same direction as the outhaul. This will pull the reefed sail's foot taut along the boom.

The picture incorrectly shows the cheek block positioned forward of the reef clew grommet. This would pull the clew grommet downward, but also forward.

The cheek block (on the starboard side) and the corresponding padeye (on the port side) must both apply downward force to bring the reefed clew grommet down to the boom, but must also apply force aft.

If you install your own jiffy reefing system, make sure to place the padeye and cheek block far enough back on the boom to get about a 45 degree angle on the reefing line.

As mentioned above, once the tack and clew are set, the in-between grommets are not critical to sail shape, but these reefs are simply there to manage the excess sail on the boom.

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Stinkpotter
Master Marine Consultant

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Djibouti
9081 Posts

Response Posted - 06/19/2010 : 10:38:49

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Voyager
 I noticed a slight inaccuracy in the original Catalina illustration that is, nonetheless, quite important for sail shape when reefed. Anybody who plans to install their own reefing system on a C-25 would be well advised not to take the picture's geometry as gospel. The angle that the cheek block makes with the reefed clew grommet should be such that it pulls the clew eye down AND AFT...<hr height="1" noshade id="quote"></blockquote id="quote">I noticed the same thing and forgot to point it out this time--good catch. What I don't remember is how far aft of the reef clew the cheek-block was mounted on Passage's boom... Bruce?

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Voyager
Master Marine Consultant

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USA
5377 Posts

Response Posted - 06/19/2010 : 20:07:33

I checked it today and the cheek-block looks to be about 4" aft of the reef clew.

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DanM
Captain

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USA
256 Posts

Response Posted - 06/21/2010 : 06:07:43

Dave and Bruce - Perfect Day has the same setup, with the padeye and turning block set aft. But the PO left me a spiral horn to attach the tack. Works OK when reefing at the dock, but a real hastle when underway. Running a simple line up and thru the reeftack eye, as in the two-line drawing would be so much easier. I think I have that set-up also, but never considered it. Thanks!

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