8015 SL Motor

The 8015 SL motor is a high-performance brushless motor designed for large UAV applications. This documentation covers the 100 KV variant with detailed specifications and test data.

Key Features:

• High thrust up to 12,704g for heavy-lift UAVs
• Durable dual 689 sealed bearings for long operational life
• Optimized for 28"–30" propellers
• Lightweight design (~420g) for large UAV efficiency
• High power density (up to 6.4 W/g maximum)
• Ideal for long-endurance and industrial UAV missions

100 KV

100 KV - Specifications

Motor Specifications:

• KV Rating: 100 RPM/V
• Kt (Motor Torque Constant): 0.1245 Nm/A @ 2995 RPM
• Weight: 420g ± 5g
• Max Continuous Current: 40 A (180 s)
• Max Continuous Power: 1495 W (180 s)
• Power Density: 4.5 W/g (Rated), 6.4 W/g (Maximum)
• Voltage Range: 44 V – 50 V (12S LiPo)
• Io (48@V): 1.64 A (48@V)
• Inductance per phase (Winding Inductance): 0.069 (≈0.03) mH
• Resistance per phase (Rph): 0.07 (≈0.03) Ω
• Stator Poles: 36S
• Magnetic Poles: 42P
• Bearings: Dual 689 Sealed
• Stick Out Shaft Diameter: Ø 0 mm
• Motor Diameter: Ø 88.4 mm
• Motor Length: 34 mm
• Motor Weight: 420 g ± 5 g
• Mount Pattern @ 90 deg: 4 × M4 @ PCD Ø 36 mm, depth: 7 mm
• Compatible Propeller Size: 28" inch to 30" inch
• Propeller Mount Pattern: 4 × M3 @ PCD Ø 20 mm, depth: 5 mm, 4 × M4 @ PCD Ø 23 mm, depth: 5 mm

Test Data - 100 KV

VT 3010 " CFRP_FP

Test Conditions:

• Propeller: VT 3010 " CFRP_FP
• ESC: TM 80A 12S
• Power Supply / Battery: 2 × TB - 22000 mAh 12S
• Test Date: 03-05-2024
• Humidity: 36 %
• Environmental Temp: 35 ° C
• Cross-winds: Mild

PWM – Throttle %	Voltage [V]	Current (A)	RPM	Thrust (g)	Torque (N-m)	Electrical Power (W)	Efficiency	Temp (Celcius)
1300 – 30	49.8	1.9	1163	1346	0.62	94.6	14.2	71 ° C (@70% 10 min Constant)
1400 – 40	49.6	4.7	1570	2588	1.15	233.1	11.1	71 ° C (@70% 10 min Constant)
1500 – 50	49.2	11.1	2099	4881	2.06	546.1	8.9	71 ° C (@70% 10 min Constant)
1600 – 60	48.9	19.1	2505	6919	2.89	934.0	7.4	71 ° C (@70% 10 min Constant)
1700 – 70	48.4	28.7	2885	8919	3.67	1389.1	6.4	71 ° C (@70% 10 min Constant)
1800 – 80	47.9	40.1	3207	10806	4.43	1920.8	5.6	78 ° C (Maximum)
1900 – 90	47.4	53.3	3528	12622	5.1	2526.4	5.0	78 ° C (Maximum)
1950 – 95	47.1	59	3619	13391	5.42	2778.9	4.8	78 ° C (Maximum)
2000 – 100	47.2	57.8	3648	13277	5.33	2728.2	4.9	78 ° C (Maximum)

TM 30 x 10.5 CF_FX

Test Conditions:

• Propeller: TM 30 x 10.5 CF_FX
• ESC: TM 80A 12S
• Power Supply / Battery: 2 × TB - 22000 mAh 12S
• Test Date: 18-04-2024
• Humidity: 36 %
• Environmental Temp: 35 ° C
• Cross-winds: Mild

PWM – Throttle %	Voltage [V]	Current (A)	RPM	Thrust (g)	Torque (N-m)	Electrical Power (W)	Efficiency	Temp (Celcius)
1300 – 30	49.9	2.3	1428	1296.4	0.6	114.8	11.3	70 ° C (@70% 10 min Constant)
1400 – 40	49.7	5.1	1907	2528.5	1	253.5	10.0	70 ° C (@70% 10 min Constant)
1500 – 50	49.5	9.7	2383	4146.6	1.6	480.2	8.6	70 ° C (@70% 10 min Constant)
1600 – 60	49.2	15.7	2781	5777	2.2	772.4	7.5	70 ° C (@70% 10 min Constant)
1700 – 70	48.8	22.3	3117	7385.5	2.7	1088.2	6.8	70 ° C (@70% 10 min Constant)
1800 – 80	48.4	30.7	3450	9236.8	3.3	1485.9	6.2	76 ° C (Maximum)
1900 – 90	47.9	40.9	3748	11085.7	4	1959.1	5.7	76 ° C (Maximum)
1950 – 95	47.5	49.4	3955	12704.2	4.5	2346.5	5.4	76 ° C (Maximum)
2000 – 100	47.5	49.3	3944	12654.9	4.5	2341.8	5.4	76 ° C (Maximum)

Performance Summary:

• Best Efficiency: VT 3010" @ 30% throttle (14.2 g/W, 1,346g thrust)
• Maximum Thrust: TM 30×10.5 @ 95% throttle (12,704g thrust, 5.4 g/W)
• Balanced Performance: VT 3010" @ 70% throttle (8,919g thrust, 6.4 g/W)
• Operating Temperature: 70-78°C depending on load and propeller
• Recommended Continuous: 70% throttle max for sustained flight

Recommended Applications - 100 KV

• Large commercial UAVs
• Heavy-lift applications
• Long-endurance missions
• Industrial inspection platforms

Common Resources

2D CAD Drawing

The 2D CAD drawing provides detailed dimensions and mounting specifications for the 8015 SL 100KV motor.

Download 2D CAD Drawing

Drawing Specifications:

• Motor Mount Pattern @ 90°: 4 × M4 @ PCD Ø 36 mm (1.42"), depth: 7 mm (0.28")
• Propeller Mount Pattern: 4 × M3 @ PCD Ø 20 mm (0.79"), 4 × M4 @ PCD Ø 23 mm (0.91"), depth: 5 mm (0.2")
• Motor Diameter: Ø 88.4 mm (3.48")
• Motor Length: 34 mm (1.34")
• Stick Out Shaft Diameter: Ø 0 mm

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

Recommended ESC & Propeller

Compatible ESCs

Recommended Configurations:

ESC Rating	Application	Features
60-80A	General purpose	Standard FOC control
80-100A	High performance	Advanced telemetry
100A+	Heavy lift	Enhanced cooling

ESC Requirements:

• Continuous rating: 80A minimum (100A recommended)
• Voltage support: 12S (44-52V) capable
• Protocol: DShot600 or higher recommended
• Features: Active braking, telemetry support, FOC control

For detailed ESC specifications and compatibility, see ESC Overview.

Compatible Propellers

Tested Propeller Configurations:

Propeller Size	Pitch	Application	Performance
VT 3010"	Medium	Balanced	Excellent
TM 30×10.5	High	Maximum thrust	Very Good

Propeller Selection Guidelines:

• Start with VT 3010" for balanced performance
• Use TM 30×10.5 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: 8015 SL 100KV
   • Propeller: VT 3010"
   • ESC: 80A FOC
   • Battery: 12S 15000mAh
   • Expected Performance: ~9kg thrust, extended runtime

2. Performance Build (Maximum thrust)

   • Motor: 8015 SL 100KV
   • Propeller: TM 30×10.5
   • ESC: 100A FOC
   • Battery: 12S 10000mAh
   • Expected Performance: 12.7kg thrust, high performance

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 (>78°C)
• Grinding or scraping sounds
• Reduced thrust output
• Propeller wobble

Bearing Replacement

Bearing Specifications:

• Type: Dual 689 Sealed Bearings
• 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

Feature	4006 SL	8008 SL	8015 SL
Weight	67 g	210 g	420 g
Max Thrust	~2 kg	~10 kg	13.5 kg
Voltage	24V (6S)	48V (12S)	48V (12S)
Prop Size	13–16"	28–30"	up to 30"
Application	Small UAVs	Medium UAVs	Large UAVs
Mounting	M3 bolts	M3 bolts	M4 bolts

PRO Series Alternatives

Feature	8015 SL	8015 PRO	14015 PRO
Weight	420 g	~500 g	~800 g
Max Thrust	13.5 kg	~15 kg	~20 kg
Voltage	48V (12S)	24-48V (6S-12S)	24-48V (6S-12S)
Prop Size	up to 30"	up to 32"	up to 36"
Build	Lightweight	Standard	Heavy-duty
Power Density	6.4 W/g	~5.5 W/g	~5.0 W/g

Selection Guide:

• 8015 SL: Best for large UAVs requiring efficient operation with lightweight design
• 8015 PRO: More robust construction for demanding applications
• 14015 PRO: Maximum thrust capacity for heavy-lift missions
• 8008 SL: Step down for medium 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 78°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 12S LiPo batteries (44-52V range)
• Do not exceed maximum continuous current ratings (40A @ 180s)
• Ensure proper battery discharge rates (C-rating)

Installation Safety:

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

Emergency Procedures:

• If motor overheats (>78°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

• Technical Support: support@vectortechnics.com
• Phone Support: +918977744819 (Mon-Fri, 9AM-5PM IST)

Related Documentation

• Motor Installation Guide
• ESC Configuration Guide
• Propeller Selection Guide
• Motor Overview
• SuperLight Series

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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: 1.0
• Last Updated: February 2026
• Product Code: VT-8015SL-100KV
• Document ID: VT-DOC-8015SL-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).