[Rhodes22-list] Main Sail Speed

[Bill Effros]

Phyllis,

I still don't know if boats sail measurably faster with traditional 
sails than IMF, but I've been working with my IMF to see how fast it 
will sail.  Generally I get most of the drive out of the head sail, and 
use the main sail primarily to keep the boat balanced.  Recently I've 
been sailing with a full main sail and storm sail sized jib to try to 
determine the maximum speed I can get out of main sail alone.  To date 
the best I have done is 4.2 kts sustained on main sail alone.

What is the best speed you can get out of just your main sail?  What is 
the best speed people with traditional main sails can get out of their 
main sails alone? 

If the traditional people can get significantly higher boat speeds out 
of just their main sails, I think that would answer some of your questions.

Rummy, are you in this game?  Rummy has a battened IMF.  Does he get 
more boat speed out of his main sail than non-battened IMF people?

I do not set my 4.2 kts. as the gold standard, just as the starting 
point.  I would expect to be able to get 5 kts. under the right 
conditions, but I doubt that I could get anywhere near 6.25 under IMF 
main sail alone.

Bill Effros

P&M Beals wrote:

>Hello.  I was just going through email and saw this note...
>sounds great.
>
>May I ask do you have a traditional mainsail or the IMF?
>
>I bought a 1986 last summer with IMF, and I just feel that this boat will
>sail even better with a traditional mainsail...
>
>I hope you  can give me a reply.
>
>Phyllis Beals
>Whisper
>Keyport, NJ
>
>By the way, where on the Hudson do you sail?
>Haverstraw Bay?
>
>I used to sail out of  Catskill Creek, Catskill on my father's gaff rigged
>wooden sloop...this smaller fiberglass boat is a new experience for me, but
>I am trying to hang in there with it.
>
>Thanks again.
>
>  
>
>>From: fnuttersny at aol.com
>>Reply-To: The Rhodes 22 mail list <rhodes22-list at rhodes22.org>
>>Date: Sat, 13 Aug 2005 23:38:28 -0400
>>To: rhodes22-list at rhodes22.org
>>Subject: [Rhodes22-list] on ballanced boat
>>
>>My 73 R22 is bare bones compared to most others on the list.  Two batteries
>>located under the companion way and a 9.5 evinrud in the lazzarete  engine
>>well pretty much makes up my boat.  I basically set her up as a very
>>comfortable day sailer. In this configuration the boat is slightly stern
>>heavy.  I recently replaced the centerboard with a custom composit airfoil
>>shaped board with no leading and trailing(the board has the same width over
>>its length) edge taper and 25# of bronze makingup the tip of the board -the
>>board dropes quickly-. I have a new rolly-tasker main and a new 150% head sail
>>both hanked on..  I have to say that the boat performs fantastic.  In 15 to 20
>>mph wind and full sails there is almost no pressure on the tiller.  The boat
>>seams to dig her nose slightly down and the stern comes up.  I can set the
>>rudder with the tiller tamer and have held my coarse for up to 45 min.  As the
>>wind picks up I usually stand on the rail up by the mast and hang on to  the
>>sta
>>ys and just look down as the boat sails herself falling of slightly then
>>rounding up a little back an forth never more than a vew degrees either way.
>>This is the first time I have sailed the boat with realy good sails and
>>centerboard  etc. and the difference is everything I hoped it would be.  I
>>believe this is a perfect boat for inland waters in my case the Hudson river.
>>I had four adults on board recently in a steady 25 mph wind. We sat four in a
>>row and the boat sailed at maybe 5deg.  We flew across the river against a
>>flood tide still very little pressure on the rudder and very very close to the
>>wind.  My passengers thought I was brilliant the way I made the boat go
>>exactly were I wanted it to go and in quick time .  Thanks to a great design
>>and a vew up grades.
>>__________________________________________________
>>Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
>>
>>    
>>
>
>__________________________________________________
>Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
>
>  
>