3rd Reef in Main? - Page 3 - 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 > General Interest > General Discussion (sailing related)
 Not a Member? 


Reply
 
LinkBack Thread Tools
  #21  
Old 01-17-2011
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 11 Times in 11 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
Quote:
Originally Posted by labatt View Post
We have a third reef... North of Annapolis installed it for us and it was a regular thing for them. Ours gives us 45% of the main (approximately). We use two line reefing for all three of our reefs, led back to the cockpit. We have a heavy Schaefer cheek block on the boom with oversized screws, and we said "screw weight aloft" and went with a heavy running line for the third reef. We've actually never used it (when we were in 70kts of wind a couple of years ago we reefed to our second reef and ran in front - in retrospect, a third reef would have been a smart idea as we exceeded 9kts of boatspeed on a vessel with a theoretical maximum of 7kts - and that was with very little wave action i.e. we weren't surfing down a wave). Anyway, we do like to know it's there.
Ya think???
__________________
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
  #22  
Old 01-17-2011
Yorksailor's Avatar
Senior Member
 
Join Date: Oct 2009
Location: Pacific side of Panama
Posts: 478
Thanks: 15
Thanked 18 Times in 17 Posts
Rep Power: 6
Yorksailor is on a distinguished road
I have 4 reefs but only have 1, 2 and 3 rigged and when I was out in 45 knots gusting 55 knots I was wishing I had it rigged as the third reef that gets me down to 30% of the main's size was too much sail.

My 4th reefs substitutes for a storm trysail but my sail is 13 oz cloth and can take the load. Off-shore I will rig reefs 2,3 and 4.


Phil
Reply With Quote Share with Facebook
  #23  
Old 01-17-2011
Member
 
Join Date: Dec 2006
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
mainemandean is on a distinguished road
Now that I am up to speed on reefing for gale force winds, can someone answer a more perplexing question?

HOW do I get this forum to send me email notifications about new posts?

As far as I can deduce, I am set up to get them, but I don't get them.
Reply With Quote Share with Facebook
  #24  
Old 01-17-2011
Faster's Avatar
Just another Moderator
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 14,919
Thanks: 75
Thanked 214 Times in 206 Posts
Rep Power: 10
Faster has a spectacular aura about Faster has a spectacular aura about Faster has a spectacular aura about
Quote:
Originally Posted by mainemandean View Post
HOW do I get this forum to send me email notifications about new posts?

As far as I can deduce, I am set up to get them, but I don't get them.
Looking into it!
__________________
Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
Reply With Quote Share with Facebook
  #25  
Old 01-17-2011
Senior Member
 
Join Date: May 2006
Posts: 825
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 9
chris_gee is on a distinguished road
Wind force is sail area x speed squared. So if you reef normally at 20 by 30 you need to reduce the sail area by half. If 25 by 35. I am not sure why Sailing dog says the reefed sail will often have less force on it than the unreefed sail would have normally.
Say you normally reef at 20 knots. At 30 you need have half the area or a bit less. Comparing both wind speeds at say 5 and 10 knots less you will have less force on the reefed sail than on an unreefed sail at 20 knots but quite a bit more than at 10-15 knots. At 35 however even with a 50% reef you will have a third more than at 30.
The traditional 37.5% less luff length gives a sail area reduction of about 60% if my arithmetic is right because the foot also reduces.
I estimate that the normal second reef only extends the wind range by 6 knots or so. The advantage of a dedicated sail if you need it is that it can be much stronger, because gusts will tend to quite high and the sea state would tend to reduce the ability to handle them in the usual ways.
Reply With Quote Share with Facebook
  #26  
Old 01-17-2011
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 11 Times in 11 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
Again, it all depends on how deep the reefs are and what wind speeds you put the different reefs in.

Quote:
Originally Posted by chris_gee View Post
Wind force is sail area x speed squared. So if you reef normally at 20 by 30 you need to reduce the sail area by half. If 25 by 35. I am not sure why Sailing dog says the reefed sail will often have less force on it than the unreefed sail would have normally.
Say you normally reef at 20 knots. At 30 you need have half the area or a bit less. Comparing both wind speeds at say 5 and 10 knots less you will have less force on the reefed sail than on an unreefed sail at 20 knots but quite a bit more than at 10-15 knots. At 35 however even with a 50% reef you will have a third more than at 30.
The traditional 37.5% less luff length gives a sail area reduction of about 60% if my arithmetic is right because the foot also reduces.
I estimate that the normal second reef only extends the wind range by 6 knots or so. The advantage of a dedicated sail if you need it is that it can be much stronger, because gusts will tend to quite high and the sea state would tend to reduce the ability to handle them in the usual ways.
__________________
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
  #27  
Old 01-18-2011
cormeum's Avatar
48' wood S&S yawl
 
Join Date: Aug 2009
Posts: 421
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
cormeum is on a distinguished road
We have 3 reefs. Our set up is to have a seperate cheek block and bail for each line. we also have a seperate rope clutch for each line but a common winch on the boom to snug the reef up. the bail is (almost) under the corresponding cringle but the cheek block is set aft to provide tension.
We also have one reef for the mizzen.

We do also have a trysail track for a really teeny trysail (equivalent of a 4th reef). I'd think that we'd only use it for over 60 kts. or very high wind heaving to. - haven't had to (fortunately)

That said, I'd probably go with stays'l and reefed mizzen if I wanted to heave to in high winds.
__________________
"Never attribute to malice that which can be adequately explained by stupidity." - Robert A.Heinlein
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
Main Sail question, No reef points? DulceSuerna General Discussion (sailing related) 8 11-30-2010 01:20 PM
How loose is your main sheet while raising the main? legarots General Discussion (sailing related) 33 06-24-2009 04:26 AM
To reef or not to reef, that is the question blackpearlsailing General Discussion (sailing related) 12 05-28-2008 07:46 PM
My first Reef... Stevyboy General Discussion (sailing related) 11 04-08-2008 12:45 PM
best way to reef a main doubleplay Seamanship & Navigation 10 03-27-2004 02:55 AM


All times are GMT -4. The time now is 08:59 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.