[Rhodes22-list] Sail Plan Changes

[Leland]

I stand corrected.  I just looked it up and the biggest danger on a sailboat
is Mt. Gay rum.  Also, compromise is spelled with two "ohs" not two "eyes."

I thought it was interesting that the most common danger on a sailboat is
sunburn.

Lee




Leland wrote:
> 
> Brad,
> 
> Impressive boat!  
> http://www.sailingbreezes.com/Sailing_Breezes_Current/Articles/July99/S2review.htm
> http://www.sailingbreezes.com/Sailing_Breezes_Current/Articles/July99/S2review.htm 
> Compared to a Rhode22, your 9.2C is going to be extremely stable.  Based
> on the attached article and ballast (9,800 lb. boat with 4,000 lbs. of
> ballast), she might be a little more tender than other cruisers her size. 
> If that's the case, Hank's lever analogy will have more of an effect. 
> Considering that you are decreasing sail size, it may not have much of an
> effect at all, and you aren't increasing sail area at the top of your
> mast; as opposed to our Rhodes when we raise the boom.
> 
> Like everything else on a boat it's a comprimise.  The biggest danger on a
> sailboat is drowning.  The second biggest danger is getting hit in the
> head with the boom (often followed by drowning).  Raising the boom seems
> like a reasonable comprimise.
> 
> Lee
> 1986 Rhodes22  At Ease
> Crab Alley (Kent Island, MD)
> 
> 
> 
> 
> 
> Hank-5 wrote:
>> 
>> How about "All of the above"?
>> 
>> On 10/31/07, Brad Haslett <flybrad at gmail.com> wrote:
>>>
>>> Hank,
>>>
>>> Basically the change would be from a P measurement of 34 to slightly
>>> over
>>> 33
>>> with the other parameters - I of 40, J of 13, and E of 12 remaining
>>> unchanged.  I'm hoping someone can put a slide rule to that and give me
>>> a
>>> ballpark effect in simple terms like (1) you won't notice the
>>> difference,
>>> or
>>> (2) you're a genius backyard engineer, or (3)  you're an idiot, what are
>>> you
>>> thinking?
>>>
>>> Brad
>>>
>>> On 10/31/07, Hank <hnw555 at gmail.com> wrote:
>>> >
>>> > Brad,
>>> >
>>> > Consider the sail as the force at the end of a lever.  The closer the
>>> > force
>>> > to the fulcrum the less the effect.  So, the higher up the sail, the
>>> more
>>> > the boat will heel over in a blow.  Lower sail, less heeling.  Also,
>>> the
>>> > rhodes sails faster upright than heeled over.  This is not true for
>>> most
>>> > sailboats.  Many boats increase waterline length, and theoretical hull
>>> > speed, when heeled over.  The rhodes hull shape really doesn't so
>>> heeled
>>> > is
>>> > not better.
>>> >
>>> > Hank
>>> >
>>> >
>>> > On 10/31/07, Brad Haslett <flybrad at gmail.com> wrote:
>>> > >
>>> > > Ok, boys and girls, put your thinking caps on!  Here's the deal, the
>>> > sails
>>> > > rep I've been visiting with has a 9.2C just like mine that he raised
>>> the
>>> > > boom 10 inches on for better headroom (mine is about 5' 11 1/8
>>> inches
>>> > > above
>>> > > the cockpit which gives me 1/4 inch to play with versus getting
>>> whacked
>>> > > while standing up).  He also shortened his boom length 21 inches
>>> which
>>> I
>>> > > really don't want to do.  He says the boat handles better, has less
>>> > > weather
>>> > > helm, and the center of effort moves forward.  Other than the
>>> obvious
>>> > loss
>>> > > of sail area (less than 5% by my calculations) what can be
>>> anticipated
>>> > in
>>> > > changes of handling characteristics? He (the rep) says it moves the
>>> > center
>>> > > of effort forward and the boat is more stable based on his
>>> experience.
>>> > >
>>> > > Now this from Stan's site: *Lowering the boom, automatically lowers
>>> the
>>> > > sail
>>> > > inside the mast, which in turn lowers the center of effort of the
>>> sail,
>>> > > therefore increasing the stability of the boat without cutting sail
>>> > area.
>>> > > In fact, boat speed actually increases slightly by lowering the
>>> boom.
>>> > >
>>> > > *Can we assume then that raising the boom will decrease stability
>>> and
>>> if
>>> > > so
>>> > > by what margin?  What is your experience? Loss of speed is not an
>>> issue
>>> > > with
>>> > > me. Everytime I think about these things I get a headache.  I'm sure
>>> > Stan
>>> > > could answer this in about 2 seconds but I'm afraid he'd want a
>>> donation
>>> > > for
>>> > > his experience.  That greed thing again.  I'm hoping someone can
>>> think
>>> > > this
>>> > > through and give an informed opinion at a reasonable cost.  Like
>>> free!
>>> > >
>>> > > Brad
>>> > > *
>>> > >
>>> > > *
>>> > > __________________________________________________
>>> > > Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
>>> > >
>>> > __________________________________________________
>>> > Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
>>> >
>>> __________________________________________________
>>> Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
>>>
>> __________________________________________________
>> Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
>> 
>> 
> 
> 

-- 
View this message in context: http://www.nabble.com/Sail-Plan-Changes-tf4725035.html#a13510979
Sent from the Rhodes 22 mailing list archive at Nabble.com.