3D Rocketry - Circulus 3 Kit

This 3-inch diameter kit weighs in at 20 ounces and comes with:

  • 11.25" Pre-Weighted Nose Cone
  • 15" Fiber Body Tube
  • 7.75" x 29mm Motor Tube (Kit is designed for 195mm long motors and shorter.)
  • 3/16" Thick Plywood Fins, Centering Rings and Bulkhead 
  • .370" Fiber Nose Cone Bulkhead Stop
  • 1/4" x 1/8" Basswood Fin Trim
  • 1/4" Eyebolt W/Nuts and Washer
  • 8.25" x 2.375" Fiber Tail Ring
  • 3" x 1/4" Launch Lug
  • Slot Cutting Template, Fin Alignment Template and Instruction Booklet.


Predicted Altitudes up to 2200 Ft.

Designer: Wilhelm (Bill) Carpenter
Diameter: 3.00 inches
Fin Material: Plywood
Length: 28.75 inches
Main Body Tube: 3.1
Main Nose Cone: LOC 3.1
Manufacturer: 3D Rocketry
Motor Size: 29 millimeters
Nose Cone Material: Plastic
Original Price: $44.95
Power: Mid-Power
Product Type: Kit
Recommended Motors: F20-7, F50-6
Recovery: Parachute
Skill Level: 4
Status: In-Production
Style: Futuristic/Exotic
Weight: 20.00 ounces
Rocksim Design Files
Thanks to ...
  • Wilhelm Carpenter for Updating Product Attributes

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