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 Self-tacking update:		  New Topic  Topic Locked
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AADIVER
Admiral

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USA
966 Posts
Initially Posted - 07/03/2008 :  01:10:13  Show Profile  Visit AADIVER's Homepage
Final self-tacking setup: the sheet begins attached to the base "hook" of the starboard stanchion, runs up to the jib clew attached with a snap shackle, down to the port stanchion block, then aft to the port winch. The snap shackle gives me the option to either use self-tacking or remove it for the conventional sheets. Also, the mod requires only one block, not three, a considerable saving.
Frank Farmer
Long Beach, CA
aa.diver@verizon.net
http://mysite.verizon.net/aa.diver

PRETTY PENNY
'01 C-250 WK, Hull #558
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SCnewbie
Navigator

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166 Posts
Response Posted - 07/03/2008 :  01:12:52  Show Profile
Great to hear. Can you get a picture? Is the snap shackle going to the jib tied off to the sheet/control line or does that line run freely through the snap shackle?
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Steve Blackburn
Master Marine Consultant

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Canada
1091 Posts
Response Posted - 07/03/2008 :  01:18:18  Show Profile  Visit Steve Blackburn's Homepage
I really like the simplicity. So the snap schackle (on the jib clew) just slides along the sheet? When you tack, does the schackle bump the mast and make a noise? If so, in the long run wont you have a scratched mast? I have a 110 jib.

Would it be a good idea to put a small block at the jib clew for it to slide easily on the jib sheet? How about pictures Frank?
Edited by - Steve Blackburn on 07/03/2008 01:19:46
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AADIVER
Admiral

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USA
966 Posts
Response Posted - 07/03/2008 :  12:34:14  Show Profile  Visit AADIVER's Homepage
Here's the overall setup. The clew/shackle won't hit the mast when the jib's partially furled; 100 instead of 110:



And here's the snap shackle attached to the clew:
Edited by - AADIVER on 07/03/2008 12:59:02
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SCnewbie
Navigator

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166 Posts
Response Posted - 07/03/2008 :  12:42:51  Show Profile
Awesome thanks. Do you use the same size line as your normal sheets?
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AADIVER
Admiral

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USA
966 Posts
Response Posted - 07/03/2008 :  13:02:45  Show Profile  Visit AADIVER's Homepage
Yes, 3/8ths. Notice I've replaced my old jib sheet with a new blue one I picked up at a swap meet; 45' for 20 bucks.
Again, the only block in the system is the one at the port stanchion.
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Steve Blackburn
Master Marine Consultant

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Canada
1091 Posts
Response Posted - 07/03/2008 :  13:22:29  Show Profile  Visit Steve Blackburn's Homepage
Funny I have a snap schackle just like it laying around doing nothing. All I need is 2 blocks then. I would prefer to put a block at the end of the snap schackle because of chafing. Thanks for the post Frank, great stuff!
Edited by - Steve Blackburn on 07/03/2008 13:22:48
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AADIVER
Admiral

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USA
966 Posts
Response Posted - 07/03/2008 :  13:28:59  Show Profile  Visit AADIVER's Homepage
"...because of chafing."
I think you'll find that the sheet line runs through the shackle eye very smoothly. Those WM blocks cost a lotta dough!
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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts
Response Posted - 07/03/2008 :  13:37:12  Show Profile
Frank,

What makes this self tacking?
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Steve Blackburn
Master Marine Consultant

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Canada
1091 Posts
Response Posted - 07/03/2008 :  13:40:21  Show Profile  Visit Steve Blackburn's Homepage
I'm gonna try it this weekend. I'll just run the jib sheet through the stanchion without a block. Only a test. My Admiral is going to love you Frank.
Edited by - Steve Blackburn on 07/03/2008 13:40:40
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SCnewbie
Navigator

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166 Posts
Response Posted - 07/03/2008 :  14:55:27  Show Profile
Frank will have a better answer but from what I gathered on the original thread, the Jib is free to travel on the control line. Once the jib is settled on either port or starboard side the clew is prevented from traveling beyond a certain outboard point by the control line. It appears as if the control line is acting as a jib track for a jib boom system. The original guy that did this said that the boat wouldn't sail as well but it was very helpful shorthanded and just crusing. This is my next project as soon as I finish the Arlyn rudder balance mods on my second generation beaching rudder. All that is left on it is to paint it with anitfouling so I don't have to keep pulling it out of the water. Tonight for the anitfouling and the rudder is finished. I think my wife would enjoy sailing more if she could just sit and read like she did on our powerboat and not have to help turn.
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AADIVER
Admiral

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USA
966 Posts
Response Posted - 07/03/2008 :  15:03:33  Show Profile  Visit AADIVER's Homepage
"What makes this self tacking?"

Don, look closely at the first pic I posted. As you tack, the sail shifts to the new tack without having to unwinch a winch and rewinch. The sheet stays winched to the port winch and only needs adjusting as you sail to leeward. Totally hands free tacking; ideal for single handing or with a novice crew. Only minor negative: if the jib's full out, the shackle would hit the mast coming about.
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SCnewbie
Navigator

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166 Posts
Response Posted - 07/03/2008 :  15:06:53  Show Profile
Even better. i only have a 100% jib. Even less to sweat.
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Stardog
Captain

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USA
319 Posts
Response Posted - 07/03/2008 :  16:37:25  Show Profile
I set up a self-tacking jib on a boat I once had. It seems you can't ever get perfect trim, but I found that by adding a jib boom to the bottom of the sail I was able to eliminate most of the inherent problems. The boom keeps the foot of the sail stretched to the proper length and thereby maintains better sail shape.
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AADIVER
Admiral

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USA
966 Posts
Response Posted - 07/03/2008 :  20:02:46  Show Profile  Visit AADIVER's Homepage
Cliff, how did you reef or furl your jib with a "boom" attached to the foot. Or was your jib hanked on?
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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.