4 messages2019-09-09 18:47 UTCthrough 2019-09-12 00:50 UTC
CAL 35 MKII Polars
Urbanski, Steven J.2019-09-09 18:47 UTC
Looking for these (or a similar boat).
Thank you.
Steve Urbanski
CAL 35 MKII #64
“Sarah Bernadette”
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Re: [Cal_Boats] CAL 35 MKII Polars
Allen Edwards2019-09-09 22:03 UTC
I do not have the polars you want but might have some for a similar boat.
https://L-36.com/polar_polars.php <https://l-36.com/polar_polars.php>
Allen
On Mon, Sep 9, 2019 at 11:47 AM 'Urbanski, Steven J.'
st… [at] ul.com [Cal_Boats] <Ca… [at] yahoogroups.com> wrote:
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> This e-mail may contain privileged or confidential information. If you are
> not the intended recipient: (1) you may not disclose, use, distribute, copy
> or rely upon this message or attachment(s); and (2) please notify the
> sender by reply e-mail, and then delete this message and its attachment(s).
> Underwriters Laboratories Inc. and its affiliates disclaim all liability
> for any errors, omissions, corruption or virus in this message or any
> attachments.
>
>
>
Re: [Cal_Boats] CAL 35 MKII Polars
ccampbell2019-09-11 15:44 UTC
Maybe you guys who race can tell me: how much of the accuracy of polars
is based on just the boat design, and how much on things like sail
design & quality, running rigging configuration, sail trim, and other
boat-specific issues? In other words, how transferable from one vessel
to another are they?
Chris Campbell
Re: [Cal_Boats] CAL 35 MKII Polars
Allen Edwards2019-09-12 00:50 UTC
Chris,
My website has a series of articles on measuring your boats upwind target
speed, which is one thing that you get from polars. There is also a
calculator that will give you a pretty good set of polars for various wind
conditions. I have studied many boats and it works well across a very
wide range of boats. Downwind is a whole other game. Boat design there
makes a huge difference. Basically, does the boat surf or not. Some boats
have two modes, one for light winds where they are displacement, and one
for higher winds where the target wind angle is wide of DDW and the boat
surfs. I will give you the link but I must warn you that I doubt anybody
uses it as it gets very technical. I used it to set my targets and I
usually win so I personally recommend it ;-)
This years results:
Series 1 . Tied on points but lost the tie breaker = 2nd.
Series 2 . Missed the series because I cut my finger nearly in half. = DNC
Series 3 . Five races, five first place finishes. = 1st
https://L-36.com/polars.php <https://l-36.com/polars.php>
Allen
On Wed, Sep 11, 2019 at 8:44 AM ccampbell <cc… [at] lsnm.org> wrote:
> Maybe you guys who race can tell me: how much of the accuracy of polars
> is based on just the boat design, and how much on things like sail
> design & quality, running rigging configuration, sail trim, and other
> boat-specific issues? In other words, how transferable from one vessel
> to another are they?
>
> Chris Campbell
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