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Leomotion L3025-4550 F5J 6.7:1 187g

Product Code: L3025-4550
 (4 reviews)

Price: $343.34

Out of stock, notify me when back in stock


The Leomotion L3025-4550 F5J 6.7:1 is a medium weight and very powerful electric motor for F5J models and larger models.

It weights 187 g and is capable of approx 1000W for 15 seconds on 3S LiPo's

  • Very powerful motor
  • Can be used on up to 4S LiPo batteries
  • Dynamically balanced 4 pole rotor
  • Hand wound stator
  • Carbon fiber reinforced rotor for max. 60,000 rpm
  • 6 mm shaft for perfect rotation
  • High end ball bearing
  • Geared 6.7:1 for high propulsive efficiency

Leomotion L3025-4550 6.7:1 Specifications
Motor name / GB name Leomotion L3025-4550 6.7 1 6.7:geared inrunner
Motor+GB weight 187 g 4.83 oz
Motor diameter 30.0 mm 1.18 in
Motor length 44.0 mm 1.73 in
Lead length 4.0 cm 1.57 in
Shaft diameter 6.0 mm 0.24 in
Mounting info 4 M2.5 holes on a 23 mm diameter circle
Manufacturers Rm 5 mR
Manufacturers Kv 4550 RPM/V
Manufacturers Geared Kv 679 RPM/V
Est Io 2.8 A @ 10 V
Max efficiency (10 V) 93 % @ 75 A
Operating efficiency (10 V) 92 % @ 105 A
Motor+gearbox Km 199 Nm/W^.5 X1000
Motor+gearbox Km/Kg 1452 Nm/(W^.5 Kg)
Recommended battery 3S or 4S LiPo
Rec max LiPo capacity 4 Ah
Supplied accessories 4 mounting screws
3S LiPo Performance
Recommended prop 16x10; 17x7; 16x8
Input power 860 W on 16x10 prop
Current 86 A on 16x10 prop
Rate of climb 15 m/s for 2000 g glider
4S LiPo Performance
Recommended prop 15x7; 14x9; 14x8
Input power 1150 W on 15x7 prop
Current 86 A on 15x7 prop
Rate of climb 17.5 m/s for 2000 g glider
Gearbox diameter 27.0 mm 1.06 in
Gearbox length 32.0 mm 1.26 in
Motor+GB length 76.0 mm 2.99 in
Gearbox Ratio 6.7
Planet bearings Needle bearings
Estimated GB efficiency 95 %

Reviews 4  

 Review by:

Glider setup

Excellent service as always. Installed this motor in 3m F3b type glider with GM 17x10, hyper spinner and 4s battery, performance was excellent. Had set controller to wind up slowly but by the time it was at full power it was a dot in the sky. It pulled 86A and 1046W.

 Review by:

Nice quality motor, smooth and efficient. Mine pulls 55A on 4S with 14"x9.5" prop so maybe needs bigger prop than Hyperflight's datasheet suggests to maximise power output. Great service from Neil as always

 Review by:

Powerful enough for 2.9kg 3m sailplane

To install this geared motor solid and stable, I strongly recommend to use CNC milled aluminum motor mount sold on this site. This system seemed to be too heavy and long to be supported by a simple FRP plate.
The motor pulled up 2.9kg 3m wingspan F3F sailplane way high with 4 cell 2200mAh lipo.

 Review by:

Hello! Received my order today. She was 41 days! Everything came in one piece. Thank You very much for your cooperation! All is well!

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