Description
Warning: this is a complex model which requires the correct assembly of a set of detailed jigs which are used to frame up the rotors and a very challenging covering process. It requires specialized rubber motors, typically two loops of different sized rubber. If you are not successfully flying either the Hurricane or the Freedom Flight helicopter, do not attempt to build this model.
Cyclone is the ultimate solution for the Science Olympiad Helicopter Division B and C rules. It builds to a rotor diameter of over 17 inches by fitting diagonally sideways in the compliance box. Most models build to 3.6-3.8g and can produce flight times exceeding 3 minutes at 4 grams. Includes precision assembly jigs and parts for 2 complete helicopters and both sizes of Tan Supersport rubber required for maximum performance. The rotors utilize special jigs to establish the correct helical blade twist. Our 2025/6 check-in box meets the specs for the rules.
Tools/materials required: rubber lubricant, winder, CA glue (or Duco/Ambroid/Sigment), 3M-77 spray adhesive, vaseline, razor blades, sandpaper, ruler, scissors. Don’t forget a Check in Box!
Optional: Torque meter, turns counter (volareproducts.com), scale, forceps.
Recommended replacement rubber is 1/16″ and 3-32″ rubber strip.
Basic flying notes: Don’t expect much of a climb until you’ve hit 300-400 turns. Full power is around 800-1000 turns typically. Make sure the rubber is well lubricated with silicone oil and that you are stretching the rubber 4-5 times relaxed length, winding in half of the turns before working your way in.
J&H Aerospace is not affiliated with Science Olympiad; this product listing does not constitute an endorsement by S.O.
