July 31, 2010  
Register   Login  
 
ForumsIJCA Forums  
IJCA Forums Minimize
Forums > General Interest > Sails and Tuning
Subject: Prebend
Prev Next
You are not authorized to post a reply.

Author Messages
Dave Barnes
Posts:27
04/24/2009 9:24 AM  

I’m a little unsure on the mechanics involved on prebend issues.  Hoping maybe someone can straighten me out.

 

In rig tuning my primary focus has been on headstay sag then prebend.  I have had to over compensate tightening on my lowers to reduce prebend.  I have now purchased a longer headstay (9 mm).

 

Does anybody know how this will affect my prebend?  Is it going to make it worst?

 

I can probably move my mast butt forward now, will this reduce prebend?

 

I can also move my mast back by 5 mm would this reduce prebend?

 

My thru bar is new and from APS.  My spreaders are new from APS also.  Would shortening the spreaders help reduce prebend?

 

Thanks Guys
Peter Stevens
Posts:43
08/11/2009 6:21 AM  
have you checked your measurements under the class rules. if your forestay is class length prebend is dependant on the sails you are going to use. you need to set the rig up according to the sail makers guide every J is different and requires tuning of the mast. but the guide will assist you in basic mast setup
You are not authorized to post a reply.
Forums > General Interest > Sails and Tuning > Prebend


ActiveForums 3.7
 
Print  
 
Copyright 2010 by IJCA Terms Of UsePrivacy Statement