SKU: DRFC-3125
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Scorpion Tribunus SII-4035-250KV Drone Motor

₹23,559.00 (Inclusive of all taxes)
Out of Stock

The Scorpion Tribunus SII-4035-250KV is a high-torque, ultra-low KV brushless motor engineered for heavy-lift and industrial drone platforms, offering 2700W peak power and compatibility with 5S to 12S LiPo battery systems.

Features

  • Ultra-low 250KV rating optimized for high-torque, heavy-lift applications.
  • Delivers up to 2700W peak power with a continuous current rating of 65A.
  • Lightweight 450g construction with a 40x35mm stator for an excellent power-to-weight ratio.
  • Broad voltage compatibility supporting 5S to 12S LiPo battery packs.
  • Features a durable M8 threaded shaft for secure propeller mounting.

Out of stock

Description

The Scorpion Tribunus SII-4035-250KV is engineered for demanding aerial platforms requiring significant thrust and torque. Its 250KV design is ideal for spinning large, high-pitch propellers efficiently, making it a cornerstone for heavy-lift FPV, cinematography, and industrial drone builds. The motor’s 12-arm, 14-pole stator wound in a 15-turn delta configuration ensures robust power delivery and thermal management.

With a low internal resistance of 0.037Ω, the motor minimizes electrical losses and heat generation, enhancing overall efficiency and flight time. The durable construction, including an M8 shaft, ensures reliable performance under high mechanical loads. Pre-configured with 5° timing and optimized for 8kHz drive frequency, it provides smooth, responsive throttle control across its wide operational voltage range.

Key Features

  • High-Torque Stator Design: 12-arm, 14-pole stator with 15-turn delta winding for maximum torque and efficient power conversion.
  • Advanced Thermal & Electrical Performance: Exceptionally low 0.037Ω phase resistance reduces heat buildup and improves efficiency.
  • Heavy-Duty Mechanical Construction: Features a robust M8 (7.98mm) threaded output shaft for secure propeller attachment under high thrust loads.
  • Optimized Drive Parameters: Factory-set with 5° timing and an 8kHz PWM frequency for smooth, linear throttle response and minimal cogging.
  • Extended Voltage Range: Engineered to operate reliably on 5S (18.5V) to 12S (50.4V) LiPo packs, offering exceptional build flexibility.
  • Superior Power-to-Weight Ratio: Delivers 2700W peak output from a compact 48.8mm diameter, 55mm long motor weighing only 450 grams.

Applications

  • Heavy-lift cinematography drones requiring stable flight with professional camera gimbals.
  • Industrial inspection and payload delivery UAVs operating with specialized equipment.
  • Large-scale FPV racing or freestyle quads designed for 6S to 12S power systems and large propellers.
  • Aerial mapping and surveying platforms needing extended flight times with heavy sensors.
  • Custom multirotor builds for agricultural spraying or other high-torque commercial applications.

Technical Specifications

Motor KV250 RPM/V
Motor TypeBrushless Outrunner
Stator Size40mm x 35mm
Shaft DiameterM8 (7.98mm) Threaded
Continuous Current65 A
Peak Power2700 W
Phase Resistance0.037 Ω
No-Load Current0.69 A @ 10V
Pole Count14
Supported Battery5S to 12S LiPo
Motor Dimensions (Dia. x L)48.8mm x 55mm
Weight450 g

Frequently Asked Questions

What is the maximum recommended propeller size for this 250KV motor?

For optimal performance on 6S-12S systems, this motor is designed for large, high-pitch propellers typically in the 15-inch to 18-inch range. The exact size depends on your target thrust, voltage, and ESC rating. Always consult the motor's thrust data charts and ensure your Electronic Speed Controller can handle the required current.

Can I run this Scorpion motor on a 6S battery pack?

Yes, the Scorpion Tribunus SII-4035-250KV is fully compatible with 6S (22.2V) LiPo packs. Its wide 5S to 12S voltage range allows it to operate efficiently across this spectrum. On 6S, it will spin at a lower RPM compared to higher cell counts, producing high torque ideal for large, slow-flying propellers on heavy-lift platforms.

What type of ESC is required for the SII-4035-250KV motor?

You need a high-current, high-voltage ESC capable of continuous operation at 65A or more. For multirotor use, a dedicated 6S-12S drone ESC with BLHeli_32, BLHeli_S, or AM32 firmware is recommended. Ensure the ESC's peak current rating exceeds 65A to handle the motor's 2700W peak power demand without overheating.

Package Includes

  • 1 x Scorpion Tribunus SII-4035-250KV Brushless Motor
  • 1 x Set of Mounting Accessories

Additional Information

Weight 0.45 kg
Dimensions 5.5 × 5.5 cm