Polar diagrams for SO39i

[tonygibson]

Hi all,
For those interested, I have obtained copies of polar diagrams for the SunOdyssey 39i (standard GTE, performance TGTE) following contact with Eric Levet at Marc Lombards office in La Rochelle, contact details as below:
Eric LEVET
[e-mail]
Skype: eric.levet.bureau

MARC LOMBARD ARCHITECTURE NAVALE
Le Sextant, Rue de la Trinquette
17000 LA ROCHELLE
+0033 (0)546453030
[e-mail]

[Phantom]

I am not able to find the link to open for the SO39i-Performance polar diagrams.

[tonygibson]

Attempting again to attach a copy of Polar diagrams for SO39i Performance

Attachments:

[tonygibson]

That worked, now the polar diagrams for the SO 39i Standard. It appears only one file can be added at a time to a posting.

Attachments:

[tonygibson]

This time the Excel spreadsheet data for both SO39i Polar diagrams. Thanks again to Eric Levet at Mark Lombard's office

Attachments:

[nornaj]

Thank you!

[a3pilot]

(standard GTE, performance TGTE)

What GTE TGTE stand for??

Thank you!
Terry

[MalcolmP]

Apr 13, 2012 23:25:10 GMT a3pilot said:

(standard GTE, performance TGTE)

What GTE TGTE stand for??

Thank you!
Terry

It was easy when there was just standard and shallow draft, but the performance option could have an optional 2.2m draft,

These are the specs:

standard GTE
Grand Tirant d'eau standard 2,00 m
performance TGTE
Grand Tirant d'eau performance 2,20 m
PTE - lest court
Petit Tirant d'eau 1,50 m

[a3pilot]

Thank you for your prompt response

Am only asking cause i have an app for the ipad iregatta which you can enter your polar table and give you optimal tacks etc for a given waypoint

Am planing to participate on a regatta with SO39i 2007 so i guess the xls gte values will do?

Theres also the pdf with a chart. Which sail combination takse into account? Full main and jib?

Thank you again
Happy easter
Terry

[MalcolmP]

Apr 14, 2012 15:03:46 GMT a3pilot said:

Thank you for your prompt response

Am only asking cause i have an app for the ipad iregatta which you can enter your polar table and give you optimal tacks etc for a given waypoint

Am planing to participate on a regatta with SO39i 2007 so i guess the xls gte values will do?

Theres also the pdf with a chart. Which sail combination takse into account? Full main and jib?

Thank you again
Happy easter
Terry

Hi Terry

The polars show full sail in flat water - this includes spinnaker for downwind - you can see where the curves break and overlap for the change from fore and aft to downwind rig

SO 39 TGTE Mat Performance pdf is the classic mast performance rig and the SO 39 GTE Mat Classique pdf is the standard boat also with classic main

Presume you have the performance rig? you could try the xls data but perhaps also email Eric Levet as to see if he has other data sets specific to your exact model

Be interesting to learn what you think of the iregatta prediction program

[a3pilot]

Well i wont have a spinakker but neither the other boats. Well the iregatta has a trim function what it does is takes the values i put from the xls i found here and interpolates all the other values and gives you a complete 360 degree up to 20 kts XLS. Degree by degree knot by knot values.

What is Up.Vs Up.Bt Up.Vmg ?? Is it the speed and best angle and velocity made good for a given wind to sail upwind and downwind???

I want this app to give me best tacks and jibes to a waypoint. Also has start line function.

If i dont have a spinakker propably the speed of the boat will be diferrent downwind but relatively the jibe angles would be close... ??

I am waiting on a gps device "bad elf" to connect it with my ipad and then take it for a test with a car in a parking lot. (its cheaper this way)


Terry

Ps sorry the boat is Not the performance variant. Its just a standard 39i SO made in 2007.
Std main,genoa no spinakker. And supposely am the skipper!!