[Rhodes22-list] Test (Excel Spreadsheet)

[Leland]

Jack,

I stand corrected.  I actually can point that high.  And I'm not that good
of a sailor.

Went sailing this afternoon.  True wind was exactly 12 knots from the south
just before I put the sails up and exactly 12 knots from the south just
after I furled them in.  Apparent wind fluctuated between 10 and 15 knots. 
Small craft advisory due to the chop, which was about 3 feet in most areas.

Boom down.  Full main.  Genoa sheets ran across the cabin top which brought
the tip of the clew to the forward shrouds (about 85% reefed).  Board down. 
Traveler centered but pulled so tight the end of the boom was less than 12"
from the traveler.

Port tack on a close reach at 240 degrees with a 10 to 15 degree heel going
about 3.5 to 4 knots with the tiller locked at about 3 degrees to the
leeward side.  Starboard tack at on a close reach at 150 degrees with a 15
to 20 degree heel (stupid 130 lb. outboard) going about 3.5 to 4 knots with
the tiller locked at about 3 degrees to the leeward side.  240 minus 150
equals 90 divided by 2 would be 45 degrees into the wind, but that was on a
close reach, not on a beat, close-hauled.  I easily got another 5 degrees
without luffing the sails on a beat.

Considering the amount of wind and chop, I think the Rhodes22 will point
better than 40 degrees with a little less wind and a lot less chop.

One other minor factor.  I was single-handling so I only had 180 lbs. of
human ballast.  Okay, maybe 190 lbs., but I was standing most of the time as
opposed to sitting or hiking-out.

We really do have a well-designed sailboat.

Lee





Leland wrote:
> 
> Jack,
> 
> No.
> 
> Sure seems that way though when watching the apparent wind blow back the
> telltales on the shrouds.
> 
> With the genoa lines ran across the cabintop; the traveler to windward;
> the centerboard down; the right amount of wind, current, chop and human
> ballast; I'll bet an experienced sailor like Rummy could get 40 degrees
> (without three sheets to the wind).
> 
> Lee
> 
> 
> Comehere Jack wrote:
>> 
>>  Lee -
>> 
>> I'm not as interested in the speeds as I am that first number in your
>> "degrees off the wind" column!  Can you actually point that high?
>> 
>> 
>> 
>> -----Original Message-----
>> From: rhodes22-list-bounces at rhodes22.org
>> [mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of Leland
>> Sent: Wednesday, September 12, 2007 10:43 AM
>> To: rhodes22-list at rhodes22.org
>> Subject: Re: [Rhodes22-list] Test (Excel Spreadsheet)
>> 
>> 
>> Oops--assumed it wouldn't work.  Guess I'd better explain a little.
>> 
>> First of all, the boat speed spreadsheet for the Rhodes is not accurate
>> for
>> a multitude of reasons.
>> 
>> The data for the Beneteau46 is from their website.  Since its LWL is
>> 40'8,
>> its speed should generally be about twice that of a Rhodes.  I divided
>> the
>> Beneteau data in two and discovered that one of the biggest discrepancies
>> is
>> that the Rhodes performs much better in light air and therefore reaches
>> its
>> maximal speed much quicker.  I couldn't figure out an easy way to
>> compensate
>> so I simply changed the wind speed to increments of two instead of four. 
>> Hey--I said it was inaccurate.
>> 
>> The Rhodes will still reach its maximal speed sooner than the spreadsheet
>> depicts, but I did notice that the data looks somewhat more accurate as
>> you
>> decrease wind speed.
>> 
>> Does anyone know of an easy and more accurate method of predicting our
>> speeds?  I understand that there are too many variables to be too
>> accurate.
>> 
>> Thanks!
>> 
>> Lee
>> 
>> 
>> 
>> Bud_On_Rhodes wrote:
>>> 
>>> Lee,
>>>   I can read your uploaded xls just fine.
>>> 
>>> -Bud
>>> 
>>> Leland wrote:
>>> 
>>>>Just testing to see if I can upload an Excel spreadsheet.
>>>>
>>>>Lee
>>>>1986 Rhodes22
>>>>Crab Alley (Kent Island, MD)
>>>>
>>>>
>>>>http://www.nabble.com/file/p12636553/Speed%2BCalculations.xls
>>>>Speed+Calculations.xls
>>>>  
>>>>
>>> 
>>> 
>>> __________________________________________________
>>> Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
>>> 
>>> 
>> 
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>> 
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>> 
>> __________________________________________________
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>> 
>> 
> 
> 

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