Translator from GOOGLE

Eternal Mast Question(s)

I have reserved myself to pairing MauiSails/MS masts with MS sails
 - NOT that that is a bad thing :)
i.e. proprietary suggested/recommended mast with the sail
others change sail brands and wish to save money
does Maui Sails try other masts with their sails ?? NOT SURE

A friend of mine has a SailWorks/SW 100% LightStick mast 
He is using it with a race sail compatible to MauiSails in terms of mast curve ie Severne and feels it is a great combo
It looks kinda okay, but what are the thoughts on this ??

On the other side of the equation ...
i discussed using a MS 75% 490 mast with a SW Retro 7.5
a reputable SW representative from the company suggested this would be GOOD
i was surprised, but have remained with MS sails
Retros are too expensive and require WAY too much downhaul
masts for sure seem to be a subject of interest for many windsurfers
it is my 3rd most popular post on my BLOG !!!

thanx in advance for any thoughts on this ...

here is what Roger Jackson says on the StarBoard forum - back in March 2008:
on the question of mast compatibility - obviously

"Hi Unregistered,
In some cases there may be no difference, in other cases there may be quite a bit of difference.
Constant curve masts have about a 13% bend ratio.
How/where each loft specifies the top and bottom bends to equal 13% can vary significantly.
Some are softer in the top, but not so soft that the are "flex top".
Some are very constant curve and are as close to 13% throughout their entire length as it's posible to make them.
On the very high end of the spectrum, Powerex makes their own 100% Z-Speed masts.
Severne and Sailworks (and probably some others that I'm not familiar with) have their 100% carbon race masts made by Italica in Italy. Very nice masts but also very costly.
Each loft has masts made to their specifications and they test them to ensure that the company that makes them meets their specs.
Almost all std. dia masts are now constant curve so there may not be too much difference.
I use Powerex Z-Speeds, Sailworks Lightsticks (Itallica), Sailworks Speedsticks (Powerex), and Severne Redline (also Itallica) masts pretty much interchangeably, but there are minor differences in the way the sail looks, but nothing I have been able to detect on the water.
You will always "tune" your rig a bit, and when tuning you will focus on what you want.
More power= less downhaul and less top twist.
Better gust handling = less draft lower in the sail, more top twist.
Better high wind stability= more downhaul, more top twist, more panel tension top to bottom and a bit more outhaul to stabilize things.
So, to get the optimum performance (as designed into the rig by the loft) you probably will not go wrong using the recommended "best" mast, and this will always give you the best "starting point".
If the mast meets the design specs. (not all of them do) you can pretty much rig "by the numbers".
From there you will need to figure out what characteristics are the most important for you, on your boards, in your conditions. Then tune your rig to your personal specifications.
As far as which masts are "better", I would say the Powerex has consistently been the mast that more lofts specify as the "best alternate mast" if the loft has it's own brand.
If you use several different brands of sails and don't want to buy several different masts to go in them, then the Powerex masts seem to have the widest application range.
If you want to "rig by the numbers" then you are better off to buy the mast recommended as "best" from the loft that designed your sail.
The only other way to find out would be to get the "best" mast from the loft that designed your sail, and the "best alternate" mast from wherever, and have one of the high end sail lofts run a series of bend tests between the 2 different masts.
And, the results may vary depending on how the test is performed.
Some lofts run their tests with a simple weight at the 25%/50%/75% test points (with the mast suspended 5 cm from each end. This is the standard "Mast Check System" methodology.
Other lofts have gone to a jig that pulls the bend into the mast from the ends (just as downhauling does) and the results are different from the std. mast check system methodology.
Hope this helps,


Somehow I have the misfortune of having acquired an OLD WindWing sail.
Interestingly enough Dr. Windsurf called it "new" as in not used and i can see why ...
I will let you judge for yourselves...

First let you show you what my wife saw when i rigged it for the first time:

She says it was all just wrong :-)

and now for my perspective...

It is fairly evident that the main issue is the battens are NOT full battens and as such do NOT give a solid pocket of air and for me just looks wrong. When i pick it up and jank on the sail to see pull, it is not too bad and should be okay for my trainees. What i was hoping for was a fully battened sail about 5-oh. This sail has NO specs written on it !! Must be really old !!!

I unrolled the sail again and looked at the paper from the sail bag...

There is a "paper" saying convert which is short for convertible. Another similiar paper was on the sail stating 4.6. Based on the additional information , it is 5'1" for the boom which is 152.5 cm ie short for me since i use large sails and booms and a luff of 14'3" which translates into 427 cm, which seems long for a small sail to me ...

I will investigate how WindWing is doing now...
They are obviously an American company and proud of it!

Did a quick investigation and seems out of date and the name Hansen and Hansen Sails comes up all over the place. Apparently they both were at Hood River, Oregon for a while and perhaps back to Berkeley , California later. Their ways may have parted and i am unsure of what they are doing now... Both brands are lesser known sails to me - butt what do i know ?? Seems they, Hansen and Sistek formed Windwing somewhere around 1982 and were at one time the largest producers of windsurf sails in North America. Somewhere around 2009 and 2010 i see no more activity on neither the windwing nor the websites. However, there is discussion on the hansen forum about 2013 sails ...

In 2015 I decided to see and record how it looks with the PX RDM 460 mast. The mast extension is set to zero and batten #3 was changed with the FULL batten. Now wish I also had the FULL batten for #4. The boom I have is a bit long, but will do ...
It looks good, but worry about the window. If it is PVC, it is the same situation as the HSM SPF. Will ask on the iwindsurf forum ...

In JAN2016 I used it on the ice