SailNet Community - View Single Post - Advice Needed - New Rigging
View Single Post
post #16 of Old 11-19-2009
KeelHaulin
STARBOARD!!
 
KeelHaulin's Avatar
 
Join Date: Mar 2006
Posts: 1,662
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 11
   
If the vertical load on the mainsail is 3000 lbs at the boom; the load on the halyard will be nearly the same because it is the only external component on the rig that will carry a vertical load opposing the downward pull. Equal/opposite forces (see Newton's 3'rd law). This is why mainsails tear out from sail slugs when the halyard is not hoisted taught and outhaul not tensioned and the slugs start taking on vertical and horizontal loads.

Last edited by KeelHaulin; 11-19-2009 at 01:12 AM.
KeelHaulin is offline  
Quote Share with Facebook
 
 
For the best viewing experience please update your browser to Google Chrome