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-   -   Quad's fins surface area? (http://www.star-board-windsurfing.com/forum/showthread.php?t=16931)

wiindz 6th March 2014 03:08 AM

Quad's fins surface area?
 
hey guys I am hoping you can help me...

I recently purchased a 2012 Starboard Quad IQ 74L and would like to know what the fin area is for the 2x11cm and 2x13cm Drake Natural Wave fins supplied with the board is. I would like to get the most possible range out of this board and without knowing the fin area I unfortunately have no starting point to add or subtract fin area from. I would greatly appreciate if you could provide me with these fins' areas as I can't seem to find them anywhere online!

Thank you for your time,
Tom

wiindz 18th March 2014 12:37 AM

nothing yet guys? no specs or fin tuning recommendations or alternate fins to try? :( any recommendations on stance/ technique adjustment going from a single fin rrd wave cult?

mcross19 18th March 2014 05:06 PM

Don't sail quads so no idea but a possible solution to your question would be to trace the outlines of the fins onto paper, cut them out and arrange them into a square or rectangle then it is a simple matter of multiplying two adjacent sides!

wiindz 18th March 2014 10:32 PM

Not a terrible idea mcross, but these fins where CNC milled which means that there has to be a CAD drawing of them somewhere... with that drawing it is super easy to get the exact area of the fins and I think Starboard can and should provide customers with that information like most other companies do! It can really help get the most out of the boards and people trying different things and talking about it on these forums can help future R&D which Starboard will do!

wiindz 20th March 2014 01:24 PM

Well i ended up doing it the manual way.. this is a spin off of the method Maui Ultra fins recommends. it would be great to see how close I got to the original CAD drawings! In case anybody else was wondering, I figured that the 11cm is approximately 68cm squared while the 13cm was about 96cm squared with a combined area of 328 cm squared for the four. this is how I measured in case somebody has a more precise way to do it manually?
https://lh3.googleusercontent.com/-9...ulated+001.jpg

carvesalot 2nd June 2014 12:03 AM

my caculations on known //published fin area are 5--7% off, close enough.

I just measure 5cm apart lines from top to bottom , add up the lengths, then divide by 2.


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