Spec: Main Rotor Diameter:970-1040mm
 Tail Rotor Diameter:210-222mm
 Length (with canopy) :900mm
 Height :320mm
 Width :165mm
 Main Blades Length:425-460mm
 Tail Blade Length:70-77mm
 Weight: 1780g
 Gear Ratio :6.67 :1:4.36 (18T Pinion)
 Battery Bay :6s 2200-5000 mAh
 Servos: Mini Servos
More PhotosGAUI X4II Electronic Equipment Reference Table Servos:Mini Servos(500 size)Normal 3D Fly:GAUI GS511,Hitec 5245 MG, Align DS510M/DS515M, Savox SH1250, Graupner DES 678 MG, MKS DS-9660A+, Futaba 9650
Hard 3D Fly:GAUI GS303(HV BLS),ServoKing 795HV,Futaba BLS153, Graupner HBS660 HV, JR DS3717 HV, HITEC 7245 MG HV, JR DS3711 HV
Rudder Servo: Low V:GAUI GS518,Savox SH1257,MKS DS8910A+,Align DS520M/DS525M
 High V:GAUI GS304,ServoKing 795i 
Speed Control:66~100A,6S Input Normal 3D Fly:GAUI GE-602,HobbyWing 80A
 Hard 3D Fly:GAUI GE-610,HobbyWing 100A,Kontronik Koby90A,YGE 80 LV, CC Talon 90A 
Brushless Motor Size: Wide Size:48mm
 KV Range 900KV~1400KV
How to count:Main Gear:120T
 Battery Input:22.2V
 Motor Efficiency:90%
Motor Brand KV  Pinion K/YGE GAUI/HobbyWing Gov Main Blades RPM
 GM-601-910KV 18T Gov@80% 73%@Gov High 2800rpm
 Scorpion HKIII-4020-1100 15T Gov@80% 84%@Gov High 2800rpm
 Scorpion HK4015-1070 15T Gov@85% 78%@Gov High 2800rpm 
 Scorpion HK3026-1400 13T Gov@65% 87.5%@Gov High 2800rpm
 Scorpion HK3226-900 18T Gov@80% 79.5%@Gov High 2800rpm
 Scorpion HK3226-1400 13T Gov@80% 87.5%@Gov High 2800rpm
Battery Max Size:(W46mm × H73mm × L180mm)
 6S 2600~50000 mAh 22.2V
Gyro Max Size Aera:16mm*38mm*38mm
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