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Eric Brandenburg takes flight at IRCHA 2011 with Dave Ketelhut’s Compass 7HV turning a wicked 2500 RPM headspeed. Dave was kind enough to share the specifications with us.


  • 100% stock 7HV air frame no mods.
  • JR 8917 servos, MKS 760 tail servo.
  • Hobbywing 120HV ESC.
  • stock compass 700mm blades.
  • Scorpion 4525-520LE motor with 14T pinion 100% flat throttle curve giving me 2500 RPMs.
  • 15° of pitch.
  • Punch RC X2 6S 5100 35C MAH packs.
  • 8FG radio.

Source: Quintessenze2 via YouTube, Dave Ketelhut of Team Compass

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