myiW Current Conditions and Forecasts Community Forums Buy and Sell Services
 
Hi guest · myAccount · Log in
 SearchSearch   ProfileProfile   Log in to check your private messagesLog in to check your private messages   RegisterRegister 
Mast Extension minimum measurements

 
Post new topic   Reply to topic    iWindsurf Community Forum Index -> Windsurfing Discussion
View previous topic :: View next topic  
Author Message
kiethordrum



Joined: 12 Jun 2015
Posts: 22

PostPosted: Mon Sep 10, 2018 1:34 pm    Post subject: Mast Extension minimum measurements Reply with quote

Can anyone help explain bow i measure my total luff to match stated sail downhaul recommendations.
1st hole on a Chinook mast ext is what ?
Where do i measure from on downhaulnrollers rollers.?
Do different base connection types need different measurements?
Back to top
View user's profile Send private message
dhmark



Joined: 04 Sep 2007
Posts: 277

PostPosted: Mon Sep 10, 2018 2:08 pm    Post subject: Reply with quote

Different Chinook extensions have slightly different distances for the lowest setting, depending on how old, RDM, SDM. (guessing 8-11 cm) It is supposedly the distance to the top of pulleys, its never quite accurate to the printed mark, but downhauling a sail correctly is not exact to printed dimensions. Good starting point IF it is the correct mast.
Back to top
View user's profile Send private message
swchandler



Joined: 08 Nov 1993
Posts: 9132

PostPosted: Mon Sep 10, 2018 2:45 pm    Post subject: Reply with quote

Rather than getting too tied up in measurement markings, it's best to look at the sail and see how downhaul affects its shape. Most sail designers craft sails to work well over a general range covering light, medium and strong winds. Downhaul adjustment makes it all a reality.

To give yourself easy adjustment and a very fine tuning capability, get a Chinook winch. It makes achieving the perfect setting a breeze, and you don't have to get down on the ground to do it.
Back to top
View user's profile Send private message
PeconicPuffin



Joined: 07 Jun 2004
Posts: 1702

PostPosted: Mon Sep 10, 2018 2:58 pm    Post subject: Reply with quote

swchandler wrote:
To give yourself easy adjustment and a very fine tuning capability, get a Chinook winch. It makes achieving the perfect setting a breeze, and you don't have to get down on the ground to do it.


Good suggestion. Making tuning easy is a must. If it's hard, you won't make smaller adjustments, and those smaller adjustments can make a real difference. Other ways to make downhauling easier is to learn the threading pattern included in this blog post, and switching your downhaul line to Spectra/formuline. It downhauls much more easily.

http://www.peconicpuffin.com/the_peconic_puffin/2007/03/easier_downhaul.html

_________________
Michael
http://www.peconicpuffin.com
Back to top
View user's profile Send private message Visit poster's website
joethewindsufa



Joined: 10 Oct 2010
Posts: 1010
Location: Montréal

PostPosted: Mon Sep 10, 2018 4:36 pm    Post subject: Reply with quote

wanna know mauisails used to measure it ??

https://www.mauisails.com/video/67
Back to top
View user's profile Send private message Visit poster's website
dhmark



Joined: 04 Sep 2007
Posts: 277

PostPosted: Mon Sep 10, 2018 5:12 pm    Post subject: Reply with quote

That chinook winch has made me such a wimp i even use it to decleat the downhaul when derigging. I dont want to get on the ground, strain my back, rip up my hands....
Back to top
View user's profile Send private message
cgoudie1



Joined: 10 Apr 2006
Posts: 2159
Location: Killer Sturgeon Cove

PostPosted: Mon Sep 10, 2018 9:23 pm    Post subject: Reply with quote

+2

-Craig

swchandler wrote:
Rather than getting too tied up in measurement markings, it's best to look at the sail and see how downhaul affects its shape. Most sail designers craft sails to work well over a general range covering light, medium and strong winds. Downhaul adjustment makes it all a reality.

To give yourself easy adjustment and a very fine tuning capability, get a Chinook winch. It makes achieving the perfect setting a breeze, and you don't have to get down on the ground to do it.
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    iWindsurf Community Forum Index -> Windsurfing Discussion All times are GMT - 5 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum

myiW | Weather | Community | Membership | Support | Log in
like us on facebook
© Copyright 1999-2007 WeatherFlow, Inc Contact Us Ad Marketplace

Powered by phpBB © 2001, 2005 phpBB Group