myiW Current Conditions and Forecasts Community Forums Buy and Sell Services
 
Hi guest · myAccount · Log in
 SearchSearch   ProfileProfile   Log in to check your private messagesLog in to check your private messages   RegisterRegister 
Multi fin sizes?

 
Post new topic   Reply to topic    iWindsurf Community Forum Index -> Windsurfing Discussion
View previous topic :: View next topic  
Author Message
skyking1231



Joined: 10 Jul 2000
Posts: 280

PostPosted: Fri Jun 14, 2013 8:01 am    Post subject: Multi fin sizes? Reply with quote

Anyone know of a link or chart to determine what size fins with sail size? I am just looking for a starting pont. I understand there are a few variables weight, riding style.... Trying to figure out fin setups for my fanatic freewave...so thruster/tri fin setups.
Back to top
View user's profile Send private message
hilton08



Joined: 02 Apr 2000
Posts: 505

PostPosted: Fri Jun 14, 2013 9:17 am    Post subject: Black Project Fins Reply with quote

Black Project Fins has a pretty thorough chart on their website (for up to 6.0 sails)

http://www.blackprojectfins.com/products/windsurf-fins/mini-epic-the-radical-multi-fin-for-twin-thrusters-quad/

http://www.blackprojectfins.com/products/windsurf-fins/wave-quad/

For Gorge sailing, I like a bigger center fin (than they recommend) to help with straight line tracking. They do recommend sizing up for heavier riders, onshore winds, or non-expert sailors.
The 17.5 center with 10cm thrusters is working great for me with 3.7 and 4.2 sails, but I like a bigger 19.5 center fin with the 4.7.
Back to top
View user's profile Send private message
U2U2U2



Joined: 06 Jul 2001
Posts: 5467
Location: Shipsterns Bluff, Tasmania. Colorado

PostPosted: Fri Jun 14, 2013 9:22 am    Post subject: Reply with quote

http://www.mauiultrafins.com/MUF7_english/News/Entries/2009/12/28_Why_do_we_need_so_much_fin_area_for_multi-_fin_wave_boards.html



http://www.blackprojectfins.com/products/windsurf-fins/wave-quad/


I would say your board is set up to be a 2+1, smaller sidefins and larger center rear, you can of course try variations to achieve a different feel, as looser more like a twin, with fin size closer to the same length.

when dealing with small side fins remember that 1 cm change will alter things when dealing with 8 or 10cm to start with.

Have you tried this board with the side s blocked off, and sailed single ?
The folks in Hatteras did this. Don't appeal to me.

One of the advantageous of multi fins is they cover a broader range of sail quiver//conditions with just one set of fin.

Your toe in on the sides is 1.09 degree, I would HIGHly recommend to try K4s with 2 degree toe and asymmetrical sides, cheap, light weight, and Graham Ezzy signature, go to ::

http://4boards.co.uk/Windsurf/Fins/K4_Asymmetric_Slot_Box_2%C2%BA_Toe-In

fins will ship at close to the UK pounds figure they show, these are great, and the co 4 boards is too!!

_________________
K4 fins
4Boards....May the fours be with you

http://www.k4fins.com/fins.html
http://4boards.co.uk/
Back to top
View user's profile Send private message
capetonian



Joined: 11 Aug 2006
Posts: 1196
Location: Florida

PostPosted: Fri Jun 14, 2013 9:59 am    Post subject: Reply with quote

Just to confuse the matter further, I sailed a friends JP Australia 93 L Single Thruster with the original 22 cm center fin and then again when he installed a Black Project 22 cm fin. The Black Project fin felt smaller (was easier to push too hard against the fins) but the board was both faster and better turning / looser on a wave.
Back to top
View user's profile Send private message
U2U2U2



Joined: 06 Jul 2001
Posts: 5467
Location: Shipsterns Bluff, Tasmania. Colorado

PostPosted: Fri Jun 14, 2013 11:07 am    Post subject: Reply with quote

capetonian wrote:
Just to confuse the matter further, I sailed a friends JP Australia 93 L Single Thruster with the original 22 cm center fin and then again when he installed a Black Project 22 cm fin. The Black Project fin felt smaller (was easier to push too hard against the fins) but the board was both faster and better turning / looser on a wave.


BPF are making some excellent fins with additional all the time.







the Black Project Fins work so very well for me, in single twin quad and tri


_________________
K4 fins
4Boards....May the fours be with you

http://www.k4fins.com/fins.html
http://4boards.co.uk/
Back to top
View user's profile Send private message
skyking1231



Joined: 10 Jul 2000
Posts: 280

PostPosted: Fri Jun 14, 2013 11:57 am    Post subject: Reply with quote

i sailed the fanatic in the beginning center fin (which was good). But now sailing tri-fin and don't plan on going back. currently i am using a weed fin setup....20cm center an 11cm sides. this was great yesterday with my 4.2. i do have 10cm sides. even though this is weed fins...they seemed better than the mfc 19&11cm fins
Back to top
View user's profile Send private message
U2U2U2



Joined: 06 Jul 2001
Posts: 5467
Location: Shipsterns Bluff, Tasmania. Colorado

PostPosted: Fri Jun 14, 2013 12:58 pm    Post subject: Reply with quote

I could have some slot box, if you determine waht you want (if any) drop me a PM and will see what I no longer need . I sold my quad that had 4 slots.

next board on the horizon will have US/Mini tuttle, so I am sure I have some excess.

BPF, MUFs or Makani, maybe K4.....

I tried a single fin on my Witchcraft ONCE, never again, always 3.

_________________
K4 fins
4Boards....May the fours be with you

http://www.k4fins.com/fins.html
http://4boards.co.uk/
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    iWindsurf Community Forum Index -> Windsurfing Discussion All times are GMT - 5 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum

myiW | Weather | Community | Membership | Support | Log in
like us on facebook
© Copyright 1999-2007 WeatherFlow, Inc Contact Us Ad Marketplace

Powered by phpBB © 2001, 2005 phpBB Group