That "Lift" you feel from your Fins

griffinsurfboard

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Perhaps the lift theory is wrong , since cavitation is a dominant player do we confuse the issue .? Does a perfect fin foil create the cavitation that gives a lift feel ?
You "Lift" - Plane on the wide surface of the base of the fin , jus like the surface of the board , you control that "Lift" - planing by reducing area above or behind what you are planing on

Mind Blowing Stuffs right there ;-)
 

Retropete

Phil Edwards status
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You "Lift" - Plane on the wide surface of the base of the fin , jus like the surface of the board , you control that "Lift" - planing by reducing area above or behind what you are planing on

Mind Blowing Stuffs right there ;-)
Your method is to reduce the physical amount of surface area "above or behind what you are planing on" correct?
What about maintaining some surface area above or behind what you are planing on and through flex allow the amount of lift to alter? Think aircraft wing's flaps.
Then with that flex turn that drag to control the lift back into drive as the angle of attack alters.
 

Woke AF

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Your method is to reduce the physical amount of surface area "above or behind what you are planing on" correct?
What about maintaining some surface area above or behind what you are planing on and through flex allow the amount of lift to alter? Think aircraft wing's flaps.
Then with that flex turn that drag to control the lift back into drive as the angle of attack alters.
But you need to prove me wrong even tho its High School physics
Sorry, but that is the JR. college course.
 
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griffinsurfboard

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Your method is to reduce the physical amount of surface area "above or behind what you are planing on" correct?
What about maintaining some surface area above or behind what you are planing on and through flex allow the amount of lift to alter? Think aircraft wing's flaps.
Then with that flex turn that drag to control the lift back into drive as the angle of attack alters.

When doing a floater do you want the surface your planing to fart the energy off thats creating this ?
Controlled Lift - Planing thru everything is that "Magic" Board feel all desire . Hovering across the wave at all times hollow or not .
 
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Retropete

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When doing a floater do you want the surface your planing to fart the energy off thats creating this ?
Controlled Lift - Planing thru everything is that "Magic" Board feel all desire . Hovering across the wave at all times hollow or not .
Well the S-wing fins in my 7' fish absolutely deliver what you say in your second sentence so there's more ways to deliver performance from a fin template than just yours.
I believe your fin templates are excellent for the record.
 
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griffinsurfboard

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Well the S-wing fins in my 7' fish absolutely deliver what you say in your second sentence so there's more ways to deliver performance from a fin template than just yours.
At the end of Backyards there is a section that pitches out intensely before entering the Bone yard

You can fly into it and ride on top of the lip until you tweek your board and fins to be thrown into flat several feet shore ward
The reduced fin tip area sets easily moving into the wider area increasing power for your next move - Great Fun !

That 4 " + long tip of you S wings would over plane and jump in a very unsettling manner unless you pointed them shoreward to get them to enter more gracefully , then get you crap together and move on - by that time you have been put on the live coral below ;-)
 
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Woke AF

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Part of sharing, an important part, is expressing your experience clearly. Not having your audience have to guess at what you are saying is demonstrating respect to your reader.
Respect begets respect.
 
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oeste858

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Not like your agenda here
Many of us appreciate the effort. Hate that every thread seems to get derailed with name calling.
Not going to pretend I understood all that you posted, but willing to try to learn more about the mysteries of board/fin design. So many variables! This thread was one I’d never considered.
:cheers:
 

Retropete

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At the end of Backyards there is a section that pitches out intensely before entering the Bone yard

You can fly into it and ride on top of the lip until you tweek your board and fins to be thrown into flat several feet shore ward
The reduced fin tip area sets easily moving into the wider area increasing power for your next move - Great Fun !

That 4 " + long tip of you S wings would over plane and jump in a very unsettling manner unless you pointed them shoreward to get them to enter more gracefully , then get you crap together and move on - by that time you have been put on the live coral below ;-)
Lucky for me I won't be surfing there in the foreseeable future but throwing an anomalous example of an end section of one particular wave in Hawaii is a rather small sample size for determining use case.
Also worth noting that since you haven't ridden a board with S-wings over that same section (or any wave for that matter) you're theorising about what would happen. Are you familiar with the "scientific method"?
 
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griffinsurfboard

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This is experienced in most waves doing this with wider tips vs narrower tips re entering smoothly and ramping up as they set deeper into the water to their wider surface
4" wide tip is way beyond a wide tip , entering with a huge contact area then a surface way forward of that .
You could describe those as a fin with a trailer attached :)
 
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