Slermalling = slope soaring + thermalling The X1 is the perfect glider for this type of flying. AUW 2.33Kg gives it mass to keep the airspeed up in good air but the X1 is so efficient at low speeds too when sink hits and you need to fly conservatively at low-sink-rate in cruise mode with a clean wing.
No RC plane is safe around Test-pilot Tim (grab your popcorn) and in this video you get 8 minutes of uncut nitro terror as he hurls the Kyosho Calmato around the sky in an attempt to break it
