Speed Generating vs. Speed Control
A TOOL TO HELP YOU SURF BETTER
Using Ride Number is easy, you just have to understand the feelings of Speed Generating and Speed Control. On one end of the Ride Number scale is Speed Generating fins. These fins feel responsive and provide that extra spring most often wanted when the surf is lacking power. On the opposite side is Speed Control. These fins feel solid, engaged, and predictable providing that extra hold usually only needed when the surf is cranking. The middle ground is Balanced, offering a mix of the two extremes for an all around feel. Just remember, when you're pumping - Speed Generating, when the waves are pumping - Speed Control
Feel = Flex + Rake + Foil
The Speed Generating, Speed Control, or Balanced feel that fins have based on the the weighted effects of flex, rake and foil.
EA Control Series
How we calculate: FEEL
FEEL = FLEX + RAKE + FOIL
RN - 6.5
ANDO Blackstix = 7.2% Flex
More flexible fins will feel springy through turns and give them a Speed Generating feel, while stiffer fins will feel solid through turns giving them a Speed Control feel. This factor has the most weighting in determining Ride Number.
John John Techflex = 2.2% Flex
How we calculate: FLEX
FLEX = Flex Distance (F) / Height (H)
Flex = Flex Distance (F) /
Upright fins feel pivoty, allowing for tighter turns and giving them a Speed Generating feel. Raked fins feel stable, providing hold through carves and giving them a Speed Control feel. Rake is a significant factor on determining the Ride Number.
How we calculate: RAKE
RAKE = Area of (X) / Area of (Y)
Area of X / Area of Y
F6 Generation = V2 Foil
V and V2 foils feel responsive and fluid through turns giving them a Speed Generating feel. Flat foils feel engaged and predictable through turns giving them a Speed Controlling feel. The effects of Foil on the overall Ride Number feeling are subtle but noticeable, therefore Foil has the least amount of weighting on the Ride Number.