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4006 SL Motor

The 4006 SL motor is available in three KV configurations to suit different performance requirements. Select your variant below to view specific specifications and test data.

4006 SL Motor - View 1

Key Features:

  • High efficiency for extended flight times
  • Durable construction with premium materials
  • Optimized for 13"–16" propellers
  • Lightweight design (67g) for agile performance
  • Multiple KV options to suit different applications

380 KV - Specifications​

Motor Specifications:

  • KV Rating: 380 RPM/V
  • Kt (Motor Torque Constant): 0.033 Nm/A @ 4826 RPM
  • Weight: 67g ± 2g
  • Max Thrust: 1,935g (with TM 16.2×5.3 prop)
  • Voltage Range: 22V – 25V (6S LiPo)
  • Io (24@V): 0.6A (24@V)
  • Max Continuous Current: 9A (180s)
  • Max Continuous Power: 233W (180s)
  • Power Density: 2.9 W/g (Rated), 4.73 W/g (Maximum)
  • Motor Diameter: Ø 44.6 mm
  • Motor Length: 20 mm
  • Stick Out Shaft Diameter: Ø 4 mm
  • Stator Poles: 18S
  • Magnetic Poles: 24P
  • Bearings: Dual 619/4-2RS Sealed
  • Inductance per phase (Winding Inductance): 0.119 (≈0.03) mH
  • Resistance per phase (Rph): 0.23 (≈0.03) Ω
  • Motor Mount Pattern @ 90 deg: 4 × M3 @ PCD Ø 25 mm, depth: 2.5 mm
  • Propeller Mount Pattern: 4 × M3 @ PCD Ø 12 mm, depth: 3 mm
  • Compatible Propeller Size: 13" to 16"

Test Data - 380 KV​

TM 14 x 4.8 CF_FX​

Test Conditions:

  • ESC: HW 40A 6S
  • Battery: TB - 22000mAh 6S
  • Test Date: 10-08-2024
  • Environmental Temp: 29°C
  • Humidity: 60%
  • Cross-winds: Mild
PWMThrottle %Voltage (V)Current (A)RPMThrust (g)Torque (N·m)Power (W)Efficiency (g/W)Temp (°C)
13003025.10.925861940.0322.68.645°C (@70% 10 min Constant)
14004025.01.030753270.0525.013.145°C (@70% 10 min Constant)
15005025.02.139795700.0952.510.945°C (@70% 10 min Constant)
16006025.03.547557970.1387.59.145°C (@70% 10 min Constant)
17007024.95.2533710670.18129.58.245°C (@70% 10 min Constant)
18008024.87.1596412850.21176.17.350°C (Maximum)
19009024.79.6655015750.26237.16.650°C (Maximum)
19509524.710.3661716570.27254.46.550°C (Maximum)
200010024.710.4660216630.28256.96.550°C (Maximum)

SS 15 x 5.5 CF_FX​

Test Conditions:

  • ESC: HW 40A 6S
  • Battery: TB - 22000mAh 6S
  • Test Date: 04-04-2025
  • Environmental Temp: 33°C
  • Humidity: 57%
  • Cross-winds: Mild
PWMThrottle %Voltage (V)Current (A)RPMThrust (g)Torque (N·m)Power (W)Efficiency (g/W)Temp (°C)
13003025.10.521271920.0412.615.358°C (@70% 10 min Constant)
14004025.01.328603670.0732.511.358°C (@70% 10 min Constant)
15005025.02.736596250.1267.59.358°C (@70% 10 min Constant)
16006024.94.542948900.17112.17.958°C (@70% 10 min Constant)
17007024.86.7486111540.22166.26.958°C (@70% 10 min Constant)
18008024.79.2535414090.27227.26.261°C (Maximum)
19009024.512.4578816970.33303.85.661°C (Maximum)
19509524.513.0583317560.34318.55.561°C (Maximum)
200010024.513.0583717510.34318.55.561°C (Maximum)

TM 16.2 x 5.3 CF_FX​

Test Conditions:

  • ESC: HW 40A 6S
  • Battery: TB - 22000mAh 6S
  • Test Date: 10-08-2024
  • Environmental Temp: 29°C
  • Humidity: 60%
  • Cross-winds: Mild
PWMThrottle %Voltage (V)Current (A)RPMThrust (g)Torque (N·m)Power (W)Efficiency (g/W)Temp (°C)
13003025.10.621002230.0515.114.853°C (@70% 10 min Constant)
14004025.11.428014240.0835.112.153°C (@70% 10 min Constant)
15005025.02.835827220.1370.010.353°C (@70% 10 min Constant)
16006025.04.7426510100.18117.58.653°C (@70% 10 min Constant)
17007024.96.9482612930.23171.87.553°C (@70% 10 min Constant)
18008024.89.4533715110.27233.16.560°C (Maximum)
19009024.712.5577018620.33308.86.060°C (Maximum)
19509524.613.2583419350.34324.76.060°C (Maximum)
200010024.713.1585318890.34323.65.860°C (Maximum)

Performance Summary:

  • Best Efficiency: TM 14×4.8 @ 40% throttle (13.1 g/W, 327g thrust)
  • Maximum Thrust: TM 16.2×5.3 @ 95% throttle (1,935g thrust, 6.0 g/W)
  • Balanced Performance: TM 14×4.8 @ 70% throttle (1,067g thrust, 8.2 g/W)
  • Operating Temperature: 45-61°C depending on load
  • Recommended Continuous: 70% throttle max for sustained flight
  • Long-endurance aerial photography
  • Efficiency-focused racing
  • Extended surveillance missions
  • Battery life-critical applications

Common Resources​

2D CAD Drawing​

The 2D CAD drawing is identical for all KV variants (380KV, 400KV, 440KV) as they share the same physical dimensions and mounting pattern.

4006 SL Motor 2D CAD Drawing

Download 2D CAD Drawing

Drawing Specifications:

  • Motor Mount Pattern @ 90°: 4 × M3 @ PCD Ø 25 mm (0.98"), depth: 2.5 mm
  • Propeller Mount Pattern: 4 × M3 @ PCD Ø 12 mm (0.47"), depth: 3 mm
  • Motor Diameter: Ø 44.6 mm (1.76")
  • Motor Length: 20 mm (0.79")
  • Shaft Diameter: Ø 4 mm
  • Stick Out Shaft Diameter: Ø 3.1 mm (0.12")
  • Shaft Length: 6.8 mm (0.25")

Note: All dimensions in millimeters (mm). Specifications and drawings may be revised without notice.

Compatible ESCs​

Recommended Configurations:

ESC RatingApplicationFeatures
30-40AGeneral purposeStandard BLHeli_S/32
40-60AHigh performanceAdvanced telemetry
60A+Heavy liftEnhanced cooling

ESC Requirements:

  • Continuous rating: 30A minimum (40A recommended)
  • Voltage support: 6S (22.2V) capable
  • Protocol: DShot300/600 or higher recommended
  • Features: Active braking, telemetry support

For detailed ESC specifications and compatibility, see ESC Overview.

Compatible Propellers​

Tested Propeller Configurations:

Propeller SizePitchApplicationPerformance
13×4.4LowEfficiencyGood
14×4.8MediumBalancedExcellent
15×5.1MediumPerformanceVery Good
16.2×5.4HighMaximum thrustGood

Propeller Selection Guidelines:

  • Start with 14×4.8 for balanced performance
  • Use 13×4.4 for maximum efficiency/flight time
  • Use 16.2×5.4 for maximum thrust output
  • Always balance propellers before installation

For more propeller options, see Propeller Overview.

System Integration​

Complete System Recommendations:

  1. Efficiency Build (Long flight time)

    • Motor: 4006 SL 380KV
    • Propeller: 13×4.4
    • ESC: 30-40A
    • Battery: 6S 5000mAh
    • Expected Performance: 1,200g thrust, 180+ seconds runtime
  2. Balanced Build (General purpose)

    • Motor: 4006 SL 400KV
    • Propeller: 14×4.8
    • ESC: 40A
    • Battery: 6S 4000mAh
    • Expected Performance: 1,600g thrust, 150-180 seconds runtime
  3. Performance Build (Maximum thrust)

    • Motor: 4006 SL 440KV
    • Propeller: 16.2×5.4
    • ESC: 60A
    • Battery: 6S 3000mAh
    • Expected Performance: 2,206g thrust, 120 seconds runtime

Maintenance and Inspection​

Pre-Flight Checks​

Before every flight:

  • Visual inspection for physical damage
  • Propeller balance and condition check
  • Mounting bolt security verification
  • Wire routing inspection (no contact with moving parts)
  • Brief spin test (listen for unusual sounds)

Periodic Maintenance Schedule​

Every 10 Flight Hours:

  • Re-torque mounting bolts to specification
  • Inspect threadlocker integrity
  • Check bearing smoothness (manual rotation)
  • Clean motor exterior with compressed air
  • Inspect propeller for wear or damage

Every 50 Flight Hours:

  • Detailed bearing inspection
  • Shaft runout measurement
  • Electrical connection integrity check
  • Replace propeller if worn
  • Document maintenance in flight log

Signs Requiring Immediate Inspection:

  • Unusual vibration during operation
  • Increased motor temperature (>70°C)
  • Grinding or scraping sounds
  • Reduced thrust output
  • Propeller wobble

Bearing Replacement​

Bearing Specifications:

  • Type: Dual 619/4-2RS Sealed
  • Service Interval: 100-150 flight hours (typical)
  • Replacement Procedure: Contact technical support or refer to motor maintenance procedures

Signs of Bearing Wear:

  • Grinding or rattling sounds
  • Increased vibration
  • Shaft play or wobble
  • Difficulty rotating by hand
  • Increased operating temperature

Comparison with Similar Motors​

SL Series Comparison​

Feature4006 SL8008 SL8015 SL
Weight67 g~350 g420 g
Max Thrust1,935g (380KV) / 1,956g (400KV) / 2,206g (440KV)~10 kg13.5 kg
Voltage24V (6S)48V (12S)48V (12S)
Prop Size13–16"24–28"up to 30"
ApplicationSmall UAVsMedium UAVsLarge UAVs
MountingM3 boltsM4 boltsM4 bolts

PRO Series Alternatives​

Feature4006 SL4015 PRO
Weight67 g250 g
Max Thrust1,935g (380KV) / 1,956g (400KV) / 2,206g (440KV)~3.2 kg
Voltage24V (6S)24–48V (6S-12S)
Prop Size13–16"up to 16"
BuildLightweightHeavy-duty
Power Density4.73 W/g (380KV) / 5.11 W/g (400KV) / 5.96 W/g (440KV)~4.0 W/g

Selection Guide:

  • 4006 SL: Best for weight-critical applications, racing, compact UAVs
  • 4015 PRO: Higher thrust capacity, dual voltage support
  • 8008/8015 SL: Step up for medium to large UAVs

See Motor Overview for complete specifications.

Safety Notes​

⚠️ Important Safety Information

Operational Safety:

  • Never run motor without propeller attached (causes unbalanced load)
  • Ensure proper cooling during extended operation
  • Monitor motor temperature - do not exceed 70°C for sustained periods
  • Inspect motor bearings regularly for wear
  • Replace damaged propellers immediately

Electrical Safety:

  • Verify correct ESC wiring before first power-up
  • Use only 6S LiPo batteries (22-25V range)
  • Do not exceed maximum continuous current (9A for 380KV, 10A for 400KV, 12A for 440KV @ 180s)
  • Ensure proper battery discharge rates (C-rating)

Installation Safety:

  • Follow torque specifications exactly
  • Never exceed maximum bolt length (3mm)
  • Verify rotation direction before propeller installation
  • Maintain minimum 10mm clearance to frame

Emergency Procedures:

  • If motor overheats (>70°C), land immediately
  • If unusual vibration occurs, stop operation
  • If motor makes grinding sounds, inspect bearings
  • Always have emergency landing plan

Technical Support & Resources​

Contact Information​


Next Steps:

  1. Review Installation Guide for mounting procedures
  2. Select compatible ESC from tested configurations
  3. Choose optimal propeller based on application
  4. Review Motor Overview for system integration

Document Information:

  • Revision: 2.0
  • Last Updated: February 2026
  • Product Codes: VT-4006SL-380KV, VT-4006SL-400KV, VT-4006SL-440KV
  • Document ID: VT-DOC-4006SL-01

Note: Specifications and drawings may be revised without notice. Vector Technics assumes no liability for reliance on unverified data. All dimensions in millimeters (mm).