Slideing gooseneck vs cunningham - SailNet Community
Reply
 
LinkBack Thread Tools
post #1 of 18 Old 06-17-2009 Thread Starter
Senior Member
 
jarcher's Avatar
 
Join Date: Jul 2008
Location: Smithfield, RI
Posts: 1,008
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
 
Slideing gooseneck vs cunningham

Hi All...

I bought my boat last September and am still figuring out how the PO had it set up. I am trying to modify the rigging for maximum advantage in racing.

Currently, my boat has a track on the mast and a gooseneck that slides (not very well at all - it binds) up and down along this track. From the bottom of the gooseneck there is a very thin and short line that just dangles there with nothing to attach to. The main sail is equipped with a cringle for a cunningham, but no cunningham I can locate.

I am trying to decide how best to fix this. I have at least two options:

1 - Replace both the gooseneck and track with a system that allows the gooseneck to snap into place along the track, locking it in place, and rig a conventional cunningham (with a purchase) through the cringle.

2 - Keep the existing track and gooseneck (or maybe find a gooseneck that does not bind on the track) and run a 2:1 or maybe 3:1 purchase from the bottom of the gooseneck down.

The mast is deck stepped.

Setting aside the fact that the existing gooseneck tends to hang up on the slide, does it make a difference whether I tighten the luff from below at the gooseneck itself or at the cringle?

Snaping the gooseneck into place and using the cringle would create a small area of sail disruption at the tack, but not move the height of the boom.

Having the gooseneck slide avoids a bag in the sail at the tack, but then the height of the boom changes. I am not sure there is a disadvantage to that and I am leaning toward this system.

Either way, I need to mount the bottom of the down haul / cunningham somewhere, so the other concern is mounting something that creates vertical stress to the cabin top. This is a problem with whichever system I pick, so I would appreciate comments about that as well. Is it a valid concern?

Of course either way, I can bring it aft to the cockpit. I may or may not, as the cockpit is extremely small.

Thanks very much for any suggestions! I plan to do this over thr weekend. Got a nice race Saturday!
jarcher is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 18 Old 06-17-2009
Senior Member
 
Join Date: Apr 2009
Posts: 103
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 7
 
Send a message via Skype™ to lshick
Consider that the gooseneck is one of the most heavily-loaded bits of moving equipment on your boat. Any choices you make should be made in the direction of stronger.

Larry Shick
V42-148 "Moira"
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
lshick is offline  
Quote Quick Reply Share with Facebook
post #3 of 18 Old 06-17-2009
Senior Member
 
Wayne25's Avatar
 
Join Date: Jul 2006
Posts: 381
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 9
 
I have a sliding gooseneck on my Helms 25. The downhaul line is secured at the base of the mast in the same mast slide, not the deck.

Wayne
Rehoboth Bay/Indian River, DE
S/Y KJ, Helms 25
1976 #552
Wayne25 is offline  
Quote Quick Reply Share with Facebook
post #4 of 18 Old 06-17-2009
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
         
I would suggest affixing the gooseneck to the mast in a set location and then setting up a proper cunningham. If you mount the cunningham or downhaul hardpoint to the mast step, there will be no effect on the cabintop.

Having a fixed height boom makes it easier to setup and use a boom vang. It also makes it less problematic if you decide to run the halyards and other control lines aft, since some lines, like the outhaul and reefing lines, would be affected when the boom changes height.

Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
sailingdog is offline  
Quote Quick Reply Share with Facebook
post #5 of 18 Old 06-17-2009 Thread Starter
Senior Member
 
jarcher's Avatar
 
Join Date: Jul 2008
Location: Smithfield, RI
Posts: 1,008
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
 
Quote:
Originally Posted by sailingdog View Post
I would suggest affixing the gooseneck to the mast in a set location and then setting up a proper cunningham. If you mount the cunningham or downhaul hardpoint to the mast step, there will be no effect on the cabintop.
Makes sense, but the mast step is completely covered by the mast itself. Should I add some kind of ring or bail to the actual mast?
jarcher is offline  
Quote Quick Reply Share with Facebook
post #6 of 18 Old 06-17-2009
Senior Member
 
Wayne25's Avatar
 
Join Date: Jul 2006
Posts: 381
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 9
 
Can you attach a fixed jam type cleat to the base of the gooseneck track? Or if your using blocks for mechanical advantage, a ring fitting. I guess we should ask what type of slide do you have. There are many different types of cars made for slides that will solve your problem.

Wayne
Rehoboth Bay/Indian River, DE
S/Y KJ, Helms 25
1976 #552
Wayne25 is offline  
Quote Quick Reply Share with Facebook
post #7 of 18 Old 06-17-2009
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
         
They make plates that can fit on the mast step for just this sort of purpose.



Quote:
Originally Posted by jarcher View Post
Makes sense, but the mast step is completely covered by the mast itself. Should I add some kind of ring or bail to the actual mast?

Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
sailingdog is offline  
Quote Quick Reply Share with Facebook
post #8 of 18 Old 06-17-2009 Thread Starter
Senior Member
 
jarcher's Avatar
 
Join Date: Jul 2008
Location: Smithfield, RI
Posts: 1,008
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
 
Quote:
Originally Posted by Wayne25 View Post
Can you attach a fixed jam type cleat to the base of the gooseneck track? Or if your using blocks for mechanical advantage, a ring fitting. I guess we should ask what type of slide do you have. There are many different types of cars made for slides that will solve your problem.
Well the track is a Tee track, similar to what a genny car rides on. It does not extend down very far below where the goose neck usually sits. Someone else suggested the track, maybe I can find a ring that would slide in the track.

What did you mean by a car could solve the issue?

SD, I have never seen an unstepped macs, so forgiv this dumb question, but does the mast somehow sit on that plate? The impression I had is that the mast step is like a shoe that sticks up, and the mast site on top of it, and the step comes up into the mast a bit to prevent it from sliding around on the deck. But I could be wrong, as I have never seen how it works.
jarcher is offline  
Quote Quick Reply Share with Facebook
post #9 of 18 Old 06-17-2009
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
         
Depends on the boat. But many have a mast step that is essentially a plate that the mast sits on. For instance, this is the mast step on my boat.



It is basically a three-sided box that the mast slides into. It has plates attached so I can use blocks to lead lines aft, and has two holes for safety pins that prevent the mast base from moving forwards.


On a lot of boats, you could mount that plate where the mast sits on the cabintop by loosening the shrouds and stays a couple turns...since it is only 1/16" thick or so.

Quote:
Originally Posted by jarcher View Post
SD, I have never seen an unstepped macs, so forgiv this dumb question, but does the mast somehow sit on that plate? The impression I had is that the mast step is like a shoe that sticks up, and the mast site on top of it, and the step comes up into the mast a bit to prevent it from sliding around on the deck. But I could be wrong, as I have never seen how it works.

Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
sailingdog is offline  
Quote Quick Reply Share with Facebook
post #10 of 18 Old 06-18-2009
Hinterhoeller HR28
 
pvanv1's Avatar
 
Join Date: Nov 2007
Location: Hamburg and Wilson NY
Posts: 156
Thanks: 9
Thanked 0 Times in 0 Posts
Rep Power: 8
 
I have a sliding gooseneck on my HR28. That was part-and-parcel with the old-school roller booms of the 60's. Wouldn't replace it like that today, but since it's existing gear, we use it.

We don't use the roller function, but the sliding gooseneck with downhaul is a good thing -- to allow our Dutchman to be tensioned at rest, yet relaxed when the sail is hoisted. We release the vang and downhaul, hoist fully, and then tension the downhaul to adjust luff tension, just like a cunningham.

FWIW, We do run McLube on the gooseneck track, as it isn't as low-friction as it could be.

Paul Van Voorhees
Certified Tohatsu TLDI Technician
Mgr, Obersheimer Sails
Buffalo, NY USA
pvanv1 is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Sliding Gooseneck SteveA General Discussion (sailing related) 3 04-30-2009 10:46 AM
boom vang and cunningham. Leland Gear & Maintenance 9 05-20-2008 10:51 PM
Why put a Cunningham on a Genoa? Lancer28 Gear & Maintenance 7 04-15-2008 07:33 PM
cunningham ? Mike244 General Discussion (sailing related) 19 12-01-2007 11:58 PM
Gooseneck Height Problem zaldog Gear & Maintenance 5 07-21-2007 07:53 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome