Spectra for Swing Keel Pennant? - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 01-15-2009
tager's Avatar
Senior Member
 
Join Date: Nov 2008
Posts: 991
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
tager is on a distinguished road
Spectra for Swing Keel Pennant?

I am considering replacing the swing keel pennant on my little 22' with spectra line. Does anybody know where I can find good information on spectra line? I hear it is stronger than stainless cable, and I imagine it would stand up better when fully submerged for long periods.

What have you all got to say about spectra for this application?
Reply With Quote Share with Facebook
  #2  
Old 01-15-2009
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 10 Times in 10 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
Spectra, vectran and dyneema based lines can all be stronger than their equivalent diameter stainless steel wire rope, with about the same amount of stretch. However, it does have the problem that they're not as chafe resistant as stainless steel wire rope. Provided you've made sure all the sheaves and such are smooth and clean, so as not to chafe the line, I'm sure it'd work quite well as a swing keel pennant. One thing to consider is how you are going to terminate the line so that it is protected from chafe at the attachment point.
__________________
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.
Reply With Quote Share with Facebook
  #3  
Old 01-15-2009
JohnRPollard's Avatar
Moderator
 
Join Date: Mar 2007
Location: Chesapeake
Posts: 5,680
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 10
JohnRPollard is a jewel in the rough JohnRPollard is a jewel in the rough JohnRPollard is a jewel in the rough
I would stick with stainless wire. Chafe alone would worry me - even if you have a nice smooth/fair run, you can snag material when sailing along that could become problematic.

Also, I would want to research whether they would be better than stainless wire in an application where they are submerged/saturated for long periods of time. It may be that their properties are diminished when constantly wet?
__________________

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

Pacific Seacraft Crealock 31 #62

NEVER CALLS CRUISINGDAD BACK....CAN"T TAKE THE ACCENT
Reply With Quote Share with Facebook
  #4  
Old 01-15-2009
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 10 Times in 10 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
JRP—

Depends on whether the pennant stays inside the swing keel trunk or not. If it is completely within the swing keel trunk, then it might be okay. If it extends out past the trunk when the swing keel is fully extended, sticking with SS is a better idea.
__________________
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.
Reply With Quote Share with Facebook
  #5  
Old 01-15-2009
Senior Member
 
Join Date: Apr 2003
Posts: 4,192
Thanks: 50
Thanked 37 Times in 36 Posts
Rep Power: 14
knothead has a spectacular aura about knothead has a spectacular aura about knothead has a spectacular aura about
I can't disagree with anything said so far.
Some of my customers who were having a major problem with electrolysis have decided to go with line. Surprisingly, I haven't had any of them return and mention that they had a chafe problem. Of course, it's only been a few years so far.
One thing about using line that may be an advantage is; it's might be easier to make up a new piece from line than wire. If someone sailed in an area where they can dive on their boat, they might carry enough extra to replace it themselves when needed.

I wonder, what do people think is a reasonable lifespan for a centerboard pennant?
Reply With Quote Share with Facebook
  #6  
Old 01-15-2009
Owner, Green Bay Packers
 
Join Date: Sep 2006
Location: SW Michigan
Posts: 10,318
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 12
sailaway21 is just really nice sailaway21 is just really nice sailaway21 is just really nice sailaway21 is just really nice
I'd probably stay with the wire rope. I wouldn't use anything though that, I myself couldn't splice or was known for being difficult to splice or make end fittings for. Keep it simple. Keeping it inexpensive isn't bad either. (g)
__________________
“Scientists are people who build the Brooklyn Bridge and then buy it.”
Wm. F. Buckley, Jr.
Reply With Quote Share with Facebook
  #7  
Old 01-16-2009
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 10 Times in 10 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
Very wise advice for almost anything on a sailboat.
Quote:
Originally Posted by sailaway21 View Post
I'd probably stay with the wire rope. I wouldn't use anything though that, I myself couldn't splice or was known for being difficult to splice or make end fittings for. Keep it simple. Keeping it inexpensive isn't bad either. (g)
__________________
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.
Reply With Quote Share with Facebook
  #8  
Old 01-16-2009
tager's Avatar
Senior Member
 
Join Date: Nov 2008
Posts: 991
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
tager is on a distinguished road
Looks like I am going with the stainless steel cable. I guess there is no reason to experiment when the tried and true route is cheaper!
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fixed or swing keel, which is better? TimG2 General Discussion (sailing related) 17 07-30-2014 09:23 AM
My First Boat...Boat Term Question... Kacper General Discussion (sailing related) 38 09-23-2008 06:52 PM
reducing keel/adding fin? abacosol Gear & Maintenance 9 07-01-2007 09:32 PM
Keel Bolt Repairs Don Casey Gear and Maintenance Articles 0 11-10-2003 07:00 PM
Keel Bolt Concerns Don Casey Gear and Maintenance Articles 0 10-12-2003 08:00 PM


All times are GMT -4. The time now is 02:08 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.