Two hot topics in surfing today: fin drag and epoxy. 1)Fins don’t cause drag, they generate speed- if you use your legs and actually try a turn. I often hear surfers debating different fin setups, poo pooing certain fins claiming “that causes to much drag.” The reality is the only thing causing drag on your surfboard is the rope you have trailing behind it. 2)Epoxy sucks.
Are you for real?? Kooks should ask questions, not make stupid statements. 1) If fins didnt have any drag, they
d be useless as stabilizers. 2) Epoxys a big subject. It
s been around for years. Properly applied, it worked very well then, even better now. Youve come to the best design forum for answers. I just hope you
re listening!
is this the REAL tfad?
TRI FINS ARE DANGEROUS
Welcome to Swaylocks. If it really is you please create a user profile and try to stick to one username. We like to think that Swaylocks is a bit different than Surfer’s forums. Nice music.
TFAD- welcome ya bugger- now git back to werk. glad yer here=)
“The reality is the only thing causing drag on your surfboard is the rope you have trailing behind it.” Actually, the reality is that total drag is a combination of several types of drag, including form drag (which can be reduced by streamlining, eg. a gunny board has less form drag than a noserider), skin drag (which can be reduced by lowering the wetted surface) and induced drag (which is caused by generation of lift by foils, ie fins being used to turn the board, as opposed to fins pointing straight ahead, when they only minimal exhibit form drag). This latter point is a source of misconception. Of course toe-in on thrusters causes some additional form drag, but I think most people overestimate it’s amount wildly… which is the point you were making? The leash is of course parasitic drag…if you use one. Welcome to Swaylocks!
Interesting topic. I remember hearing the navy spent millions trying to figure out how to make their ocean-going vessels a bit more fuel efficient. They went as far as to have jets squirting polymers and such off the bow of the ship into the water to lubricate the hull as it passed thru the water. At the end of their study they had 3 words to work with- “smoother is better”! Just ask the America cup guys who wetsand their hulls to 2000 grit to try to shave off a half second. Could win them the race.All you guys spray painting the bottoms of your boards, and then spraying a rough coat of acrylic over it…ha ha …keep it up. Another funny one for me is all this hype on laminar flow. The navy also studied this as well and discovered it didn’t even come into play until you reached 50 nautical miles per hour or greater.
Interesting topic. I remember hearing the navy spent millions trying to figure out how to make their ocean-going vessels a bit more fuel efficient. They went as far as to have jets squirting polymers and such off the bow of the ship into the water to lubricate the hull as it passed thru the water. At the end of their study they had 3 words to work with- “smoother is better”! Just ask the America cup guys who wetsand their hulls to 2000 grit to try to shave off a half second. Could win them the race.All you guys spray painting the bottoms of your boards, and then spraying a rough coat of acrylic over it…ha ha …keep it up. Another funny one for me is all this hype on laminar flow. The navy also studied this as well and discovered it didn’t even come into play until you reached 50 nautical miles per hour or greater.
The navy spent 600 dollars per toilet seat too… Epoxy does suck, use AST resins. And polish the boards as much as possible.