Cross Cut vs. Radial Cut Mainsail - 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 07-27-2009
sailing320's Avatar
Member
 
Join Date: Jul 2007
Location: Florida
Posts: 81
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
sailing320 is on a distinguished road
Cross Cut vs. Radial Cut Mainsail

I am purchasing a new mainsail for my IP which has an inmast furling system. Speaking to several sailmakers some have recommended a cross cut sail and others a radial cut. I am trying to get information on which would be the best performing sail and why. I understand the radial will be more money. My mast does not have the opening for vertical battens.
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 07-27-2009
Senior Member
 
Join Date: Dec 2007
Posts: 201
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
jason3317 is on a distinguished road
I don't see any real advantage to using a radial cut dacron sail in your particular application. Radial cut sails orient the panels to the load at the head, tack and clew, which are the primary load points. With the concave, no-roach mainsail cut you will require....I don't see the benefit.

If you are willing to up-rate your sail to a radial laminate, that might make sense. For example, North's Norlam cloth is Dacron-Mylar-Dacron in a radial cut. The radial laminates will have more ability to hold their shape. Often you see cruising boats with radial laminate headsail (genoa) and a cross-cut dacron mainsail...a good compromise.
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 07-27-2009
RichH's Avatar
Senior Member
 
Join Date: Jul 2000
Location: Pennsylvania
Posts: 2,884
Thanks: 9
Thanked 77 Times in 70 Posts
Rep Power: 15
RichH will become famous soon enough
Since you have in-mast furling, you probably won't/don't take advantage of a cross cut - adjustability of shape by 'edge tension' - foot, luff, leech, cunningham, etc. etc. etc. etc. Therefore, a radial cut, which is more shape stable than a cross cut will probably be your best optimum (for in-mast furling), .... and regardless of material chosen.
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 07-27-2009
Senior Member
 
Join Date: Dec 2007
Posts: 201
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
jason3317 is on a distinguished road
I've never seen an Island Packet with a Cunningham, that's for sure. Don't they just roll it up and motor when it blows hard enough to warrant moving the draft forward. :-) Kidding.

An in-mast furling main will by necessity need to be cut somewhat flat. I am not an IP expert, but I would believe that most of the power is generated from the headsails.....hence my recommendation on the radial cut genoa.

Price out the cross-cut vs. radial mainsail (in Dacron, not laminate). I think you will be surprised how much more $$$ the radial cut is, for imho, not much gain.

Are there other IP owners out there to chime in? I'd like to know what the consensus is among that group before I'd make a decision.
Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 07-27-2009
sailing320's Avatar
Member
 
Join Date: Jul 2007
Location: Florida
Posts: 81
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
sailing320 is on a distinguished road
I can get a radial cut for the same price as a cross cut. I'm using high quality dacron. The weight of the the radial can be less so it might be easier to furl the sail in/out.
Reply With Quote Quick reply to this message Share with Facebook
  #6  
Old 07-27-2009
Senior Member
 
Join Date: Dec 2007
Posts: 201
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
jason3317 is on a distinguished road
Less weight is better, of course. If you can get similar pricing on both cuts...the radial is the way to go.
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

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:

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

 
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
Fine-Tuning the Autopilot, Part Two Dan Neri Gear and Maintenance Articles 0 10-13-2003 08:00 PM
Upgrading Your Mainsail System Sue & Larry Her Sailnet Articles 0 11-17-2002 07:00 PM
Basic Mainsail Trim for Racers, Part Two Pete Colby Racing Articles 0 12-02-2001 07:00 PM
Mainsail Controls for Performance Dan Dickison Gear and Maintenance Articles 0 07-04-2001 08:00 PM
Mainsail Controls for Performance Dan Dickison Racing Articles 0 07-04-2001 08:00 PM


All times are GMT -4. The time now is 09:22 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.