The Concept2 Sweep Vortex Edge blade incorporates two features intended to improve blade efficiency.
The Vortex Edge decreases blade slip during the first half of the drive—the portion of the drive where it is beneficial to decrease blade slippage. This increases blade resistance and efficiency. During the second half of the stroke, the blade motion reverses, and the Vortex Edge becomes ineffective: the tapered shape actually allows for more slip toward the end of the drive. This helps to relieve blade backwatering toward the finish of the drive. There is also the side benefit of the added protection provided by the plastic cap.
