Go Back   Starboard Forums > Free Forum

Reply
 
Thread Tools Display Modes
Old 20th December 2010, 05:26 PM   #1
jojo
Guest
 
Posts: n/a
Default Mast bend characteristic NP x9 530

I just bought a new 10.7 RS racing Evo 3 and search for the compatible mast.I have a mast with bend characteristic 14.23 and Imcs 31.6.When riged it looks nice,also on water.Does someone know the mast bend characteristic of the new NP x9 530 mast,13-15 ?Someone measured it at home?The mast i have is sdm and i know that x9 have a bit smaler radius in the botom part.The cams rotate well also with my mast but i had to decrese baten tension to compensate the biger mast radius.Someone have experience with cam presure and rotation on sdm mast and formula sails.
B.R.
JOJO
  Reply With Quote
Old 22nd December 2010, 06:25 AM   #2
BelSkorpio
Member
 
Join Date: Jan 2009
Location: Belgium
Posts: 470
Default

Hi jojo,

Take a look at the Danish site of peterman: http://www.peterman.dk/masts-all-imcs01.htm

According to this site, the NP X9 530 mast should have a bend factor of 14.7 and an IMCS stiffness factor of 34.
So pretty close to your mast.

Reptile Green Mamba masts seem to have similar bend factors.

I use myself in the older and smaller (6.7m2) NP RS racing sail of 2007 a Tribord mast 460 which has also a similar bend factor as the NP X9 460. It works quite well. I've tried also a NP X6 and did not notice much difference.

Batten tension should be strong enough to support the sail body without too many wrinkles, that's all. So don't exaggerate with this tension.
The profile of the sail sleeve is maintained by the cambers.
Take a look also at this thread: http://www.star-board.com/forum/showthread.php?t=9855
This gentleman has worked out a nice improvement on sail rotation, I think.

Also bear in mind that ALL masts start with the same radius. Else the standard mast extenders would not fit. It's true of course that the radius of a X9 mast gets thinner upwards c/w most other masts.
__________________
IS87 / IS101 / IS122 / US147
BelSkorpio is offline   Reply With Quote
Reply

Bookmarks

Tags
None

Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Short mast w/ long extension vs long mast? johnk Windsurfing School 3 3rd April 2009 10:23 AM
NP x6 mast with CR ? Ken21 Ask Our Team 1 24th January 2009 10:03 PM
Mast for SSR 11.8 Wedo Ask Our Team 1 10th August 2007 12:58 AM
getting the mast extension shim out of the mast windsurferdagg Windsurfing School 3 22nd May 2007 07:42 AM
06 SSR 4.6 What mast?? carbine Free Forum 1 13th December 2006 04:16 PM


All times are GMT +7. The time now is 07:42 PM.