Sting’r E – Mk. I & Mk. II

Description: An electric ducted-fan flyer with one or two motors

Designed by Jesse Shepherd, the Sting’r E Mk.I and Mk.II are lightweight electric ducted-fan sport flyers that use one or two KP-44 fan units for power. Traditional balsa and plywood construction is used throughout, but you should use 4 to 6 lb./cu. ft. balsa for construction. The dual-fan version has excellent flight performance, and the single-fan version flies nicely in calm conditions.
Additional Information:

• Type: Electric single or dual ducted-fan sport flyer
  
• Wingspan: Mk.I, 32 in.; Mk.II, 36 in.
  
• Length: 27.5 in.
  
• Wing Area: Mk.I, 196 sq. in.; Mk.II 223 sq. in.
  
• Weight: Mk.I, 9.5 oz.; Mk.II, 15.5 oz.
  
• Wing Loading: Mk.I, 7 oz./sq. ft.; Mk.II, 10 oz/sq. ft.
  
• Motors Used: one or two K&P Aero Models KP-44 fan units
  
• Radio Req’d: 3-channel (rudder, elevator and throttle)
  
• Difficulty Level: 2
  
• Sheets: 1