In this episode, I build the nicknamed "Tower of Pain". I wanted to build an obstacle to take out to fly with friends that added an element of verticality to our race courses. It's a super dynamic obstacle that can be used as a tower, an over-under, and a tunnel. More details for this video: http://paulnurkkala.com/tower-of-pain-an-fpv-racing-verticality-obstacle/ Specs for the quads: 5-6 inch props: http://paulnurkkala.com/the-green-machine-3 4 inch props: http://paulnurkkala.com/aries-qav180-full-build-list/ Check out my other videos! null Follow me on Instagram: https://instagram.com/bulbufet/ Tweet at me on Twitter: https://twitter.com/bulbufet Download my Flight Logging app: https://flightloggr.io/