Learn how to 3D: Knife Edge / High Alpha Knife Edgeaerofundanaerofundan8:29 amMarch 4th, 2019 Learn how to 3D: Knife Edge / High Alpha Knife Edge Posted byaerofundan 03/04/2019 Videos 0 Share: Related Articles Addiction XL! Lower! Lower! flown by Alex Fredrickson XR-61T at Joe Knoxville 2021 Did it touch the ground??? Crazy LOW rolling harrier with the Addiction V2 Epic Low Knife Edge compilation Michael Wargo at RCACF in Apopka Florida PA XR-52 slow 3D with Dan Dominguez