MacGregorSailors.com

It gave me a headache, but what can I say! COOL!

After looking at their advertising
A bit more advertising hype than accuracy

From their main webpagetheir description of their analysis product is incorrect.


BTWCFD is computational Fluid Dynamics.not computer fluid dynamics. and this company did not invent the process nor domain analysis techniques.


and modeling with these codes has lots of room for ............. 'art' instead of science. Not to say that they haven't a good product...........however, if the advertising contains errors it is frequently indicative of the number of errors elsewhere..........

So.. are they better than everyone elses.........and do they make a sail that generates more thrust than another, I guess we would have to establish reproducible criteria that could be "measured" Again this is the difference between science and art. Artists use the tools that engineers develop.....

I would be more impressed with mockups that measure forces on mast sail combos drug through apparant wind loadings. and then scale those up......,

I do agree that computers make the analyis much easier..and quicker...

There are also scaling difficulties when using wind tunnel models that are beyond the scope of this note to discuss.

Oh well, enough for waxing philosophic......like everything else..... any particular sail design is a tradeoff in compromises.

Enjoy, good luck....... and I guess if you have to race your sailboat.......lol...... enjoy!!!


P.S now I know there are those that would sy I am a picker of nits, pointing out errors in advertising copy about boating related items... and why don't I pick on Macgregor or soemthing like that.......well

There are many competing sail lofts that all will make a product for the mac, I am somewhat limited in my choices of cruising trailerables since I have already sunk that money in .....(no pun intended). Hence, I now am careful to compare apples to apples.......

Buts thats what the techies do.............pick and stack nits......

Fair Winds!!!!

Do I understand that the main and jib or genoa are to be looked at as one sailform ,and it works best when the slot between them is as close to parallel as possible?

Do I understand that the main and jib or genoa are to be looked at as one sailform ,and it works best when the slot between them is as close to parallel as possible?

The reading I've done on the jib and the main says that they definitely interact. The sum of the effects of each is not anywhere near the gain you get when they both working together.