US Blanks – Rocker Selection
US Blanks Rocker Selection:
They use the deck line to adjust rocker, and all adjustments are referenced to the Natural Rocker. If desired, they can adjust rocker from the bottom. Adjustments can be made from almost any point on a blank and from one blank size to another. Unless instructed, all rocker adjustments will be made from the centre of the blank. If the adjustment is made from a point other than centre, the adjustment point will be part of the description. Rockers transferred from one blank size to another will require a match point. Radical rocker adjustments may result in bumps or dips created in the deck line. Selecting the exact right rocker profile will ensure that you have the perfect contour for your specific board design. Rocker helps determine board speed and turning radius.
Flatter Rocker = More Speed
More Rocker = Tighter Turning
The Rocker Formula:
Natural Rocker = Inches Rise in the Nose, Inches Rise in the Tail
(from the Bottom Plane)
Natural Rocker 5 -1/2″N, 2-1/16″T
Rocker Adjusted from Deck Center (the default adjustment)
Adjustments made from a location other than Deck Centered (DC) are indicated by the number, in inches, that follows the “N” or “T” in the rocker formula.
Rocker Adjusted from Multiple Locations:
Rockers can also be adjusted from multiple locations within the Nose or Tail to add subtle rocker to a given area and then increased rocker to another area, (i.e., a “Flipped Tip” effect). This is indicated by simply adding values to the existing rocker formula.
+1/2”N18” +1/2”N12” +1/8”T12”
This indicates that the tip of the Nose is adjusted +1/2” from the Natural Rocker in the last 18” of the Nose and then an additional 1/2” in the last 12” of the Nose. And the tail is adjusted +1/8” from the Natural Rocker but only in the last 12” of the Tail.