[Public-List] Upwind musings....

[Gordon Laco]

The cut of my jib can't cope with the lead being that far foreword.  

G

Sent from my iPhone

On Aug 12, 2011, at 5:52 PM, mahseer at kos.net wrote:

> Gord
> 
> why did you not use the inboard track for the jib, I have used this on my
> boat and boy can I point high.
> 
> John Boor
> MAHSEER #380
> 
>> Hello friends -
>> 
>> We¹re having a good season racing under PHRF here on Georgian Bay and had
>> an
>> interesting experience racing in heavy air last Wednesday.
>> 
>> It was blowing close to 30kts so I sailed with my little high clewed jib
>> and
>> a reefed main... We went like a train upwind although were hurting for
>> horsepower off the wind.  An interesting revelation upwind was that the
>> high
>> clewed jib does not over lap at all, and even though I rigged it¹s sheets
>> outside the shrouds as normal, we were able to sheet it much closer than
>> the
>> 140 and we sailed powerfully more than five degrees higher when beating.
>> 
>> This was thought provoking because SURPRISE is not really very good at all
>> upwind in our mixed boat fleet with regard to pointing.  This made me
>> think
>> about how the spreaders limit the sheeting angle up high, and this made me
>> think about how over the years I have seen two distinct heights for
>> spreaders in Alberg 30¹s.
>> 
>> Ours are somewhat higher than half way up.... Others, like SEABERRY who we
>> are alongside every spring and fall are about half way or a little lower.
>> SEABERRY¹s spreader height seems to be the more common variety.   Lower
>> spreaders allow the upper part of the genoa to be sheeted closer,
>> improving
>> pointing and this makes me wish I had them.
>> 
>> Honestly it occurred to me when I was building my new spreaders two
>> winters
>> ago to make them a few inches shorter in order to get the same angle up
>> high
>> as the lower spreader boats... But doing that without checking the
>> Association felt like bad pool so I didn¹t.
>> 
>> Has anyone else puzzled over this one?  (And I should add before I get
>> attacked re the shroud angle engineering issue... Even a much tighter
>> angle
>> between the mast and upper shrouds is well within modern tolerances, even
>> discounting the much heavier mast section and wire diameter we use
>> compared
>> to new boats.)
>> 
>> Standing by for your thoughts...
>> 
>> Gord #426 SURPRISE
>> 
>> 
>> 
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> 
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