This is the E-Flite Park 450 Brushless 890Kv Outrunner Motor.  This motor is ideal for 3D models weighing 15-25 oz, or scale parkflyers weighing 20-30 oz.  This motor is very quiet, and efficient.  It offers a large amount of torque, and weighs in at just 2.5 ounces (72g).  This small outrunner has great power and makes an excellent sport motor for the E-Flite Mini Edge and Mini Funtana size 3D park flyers, and for scale park flyers like the P-47.  If you are looking to upgrade from a 370 or 400 motor, this is the way to go!

Features

• Extremely quiet and lightweight—just 2.5 ounces (72 g)
• High-torque alternative to inrunner brushless motors
• Includes mount, prop adapter and mounting hardware
• External radial rotor design—4mm shaft can easily be reversed for alternative motor installation
• Slotted 12-pole outrunner design
• Ideal for 3D park flyers (15-25 oz) and scale park flyers (20-30 oz) using 2-3S 1200-2100mAh Li-Po batteries
• Quiet, efficient operation

Specifications:

Type: Brushless Outrunner
Size: Replacement for 370 or 400
Bearings or Bushings: Ball Bearings
Recommended Prop Range: 9x6 to 11x3.8 Slow Flyer or 10x5 to 12x6 Electric
Voltage: 7.2 - 12
RPM/Volt (Kv): 890
Resistance (Ri): .20 ohms
Idle Current (Io): .70A @ 8V
Shaft Diameter: .16 in (4mm)
Overall Length: 1.30 in (33mm)
Weight: 72g (2.5 oz)
Overall Diameter: 1.10 in (28mm)
Diameter: 1.1 in (28mm)
Length: 1.3 in (33mm)
Continuous Current: 14A
Maximum Burst Current: 18A for 15 seconds
Cells: 2-3 Li-Po or 6-10 Ni-Cd/Ni-MH
Speed Control: 20A Brushless ESC