Dualsky R4 Series Brushless Motor x2

Dualsky R4 Brushless Motor x2

R4 Series. New generation 4 pole sensorless brushless motor, design with breakthrough technology. High-end performance, Heavy duty, rugged structure. Ultra strong deluxe rotor. You can also mix and match. The price displayed is for 2 motors. Choose your KV. If you wish to receive different motors please make sure you add your comment in the comment box. 

Features:
● New generation, breakthrough sensorless design.
● Heavy duty fastening screws.
● Rugged structure design.
● Dual over sized precision ball bearing.
● Ultra high torque 4 pole rotor.
● Precision mold carbon fiber rotor shield.
● Front and rear rotor dynamic balancing.
● Powerful sintered magnet.
● Precision mold wire protector.
● M3/M4 mount holes, maximized chassis compatibility.
● Laser etching Logo.
● Removable endbell.
● Replaceable rotor.

Specification: Description:R4-5200
KV¹:5170RPM/V
Size²:550
Weight:206.5g
Idle current@7.2V :4.28A
Resistance:5.7mOhm
Max. Efficiency:85%
No.of Cells(NiMH/LiPo):2S Lipo
Shaft diameter:3.175mm
Mounting holes pitch:25.4mm
Rotor Diameter:18mm
Sintered Rotor Magnet:Y

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Specification: Description:R4-4300
KV¹:4178RPM/V
Size²:550
Weight:205g
Idle current@7.2V :3.3A
Resistance:7.3mOhm
Max. Efficiency:86%
No.of Cells(NiMH/LiPo):2S Lipo
Shaft diameter:3.175mm
Mounting holes pitch:25.4mm
Rotor Diameter:19mm
Sintered Rotor Magnet:Y

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Specification: Description:R4-3000
KV¹:2835RPM/V
Size²:550
Weight:205g
Idle current@7.2V :2.0A
Resistance:12mOhm
Max. Efficiency:88%
No.of Cells(NiMH/LiPo):3S Lipo
Shaft diameter: 3.175mm
Mounting holes pitch:25.4mm
Rotor Diameter:19mm
Sintered Rotor Magnet:Y

Motor Spec Chart Footnotes    
1 Measured in sensorless   
2 550 standard size: 54.5mm x 36mm