Features:

• For airplanes using .50 size 2-stroke engines or .91 size 4-stroke engines
• Stainless steel prop shaft
• Rigid rear mounting design
• Centrifugal fan design with angled ventilation holes draws air through the motor and across the windings and magnets for improved cooling

Specs:

• Rated Power: 1550W
• Rated Voltage: 25.9 - 29.6V
• Rated Current: 50 - 60A
• Maximum Current (10 sec): 90A
• No Load Current: 2.0A
• Phase Resistance: 27.5 miliohms
• Maximum Efficiency: 85%
• kV: 375
• Poles: 14
• Shaft Diameter: 0.23" (6mm)
• Shaft Length: 0.45" (11.5mm)
• Weight: 14.3oz (405g)
• Lead Wire Length: 4.3" (110mm)
• Length of Motor Can: 2.3" (57.5mm)
• Diameter of Motor Can: 1.98" (50mm)
• Length/rear of Motor Can to Prop Washer: 2.9" (74mm)
• Prop Washer Diameter: 1.06" (27mm)
• Thickness of Motor Mount: 0.16" (4mm)
• Width of Motor Mount: 2.67" (68mm)
• Height of Motor Mount: 2.67" (68mm)

Performance for this motor with different props and LiPo cells is as follows (all data with 100A ESC):

Includes:

.50 Brushless Electric Motor with Backplate, four Phillips Head
Mounting Screws, 4mm Gold Plated Male Plugs attached to leads,
three 4mm Female Plugs with Shrink Wrap, Prop Adapter and
Instruction Sheet