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BrotherHobby R3.5 2205 Brushless Motor
The BrotherHobby R3.5 2205 is a high-performance brushless outrunner motor specifically engineered for racing FPV drones and competitive quadcopters requiring maximum thrust efficiency. Professional FPV pilots and drone racing enthusiasts rely on this motor for its exceptional power-to-weight ratio, delivering consistent RPM performance across demanding flight conditions. This motor solves the critical challenge of achieving rapid acceleration and sustained high-speed flight while maintaining thermal stability during extended racing sessions.
Product Overview
The BrotherHobby R3.5 2205 operates on the principle of electromagnetic induction using a three-phase brushless design with 12 poles and 14 slots. The stator generates rotating magnetic fields that drive the outrunner bell at extreme speeds, reaching up to 7600 KV (RPM per volt applied). Unlike brushed motors, this brushless configuration eliminates mechanical friction losses, resulting in 85-90 percent efficiency ratings and significantly reduced heat generation during continuous operation. The compact 22mm diameter and 5mm shaft design integrate seamlessly into standard FPV drone frames while maintaining optimal weight distribution.
What distinguishes the R3.5 variant is its optimized stator winding configuration that balances high torque delivery with rapid throttle response characteristics essential for competitive drone racing. The motor utilizes premium copper wire with precision-wound stator coils to minimize electrical resistance and maximize magnetic coupling efficiency. Advanced bearing design reduces mechanical friction, allowing the motor to achieve peak performance at lower current draws compared to competing 2205 class motors, resulting in extended flight times and reduced battery stress.
Key Specifications
| Specification | Details |
| Product Type | Brushless Outrunner Motor |
| Brand | BrotherHobby |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Motor Size | 2205 (22mm stator diameter, 5mm shaft) |
| KV Rating | 7600 KV |
| Max Continuous Current | 25A |
| Max Burst Current | 30A (10 seconds) |
| Voltage Range | 3S-4S LiPo (11.1V - 14.8V) |
| Weight | 26.5 grams |
| Shaft Diameter | 5mm |
| Stator Poles | 12 Poles / 14 Slots |
| Max RPM | 112,800 RPM (at 14.8V) |
Key Features
- High KV Rating of 7600 delivers extreme RPM capabilities for rapid acceleration and high-speed flight performance in competitive racing scenarios
- Optimized R3.5 stator winding reduces electrical resistance by 15 percent compared to standard 2205 designs, improving efficiency and reducing heat generation
- Advanced ceramic ball bearings minimize mechanical friction, enabling smooth operation at peak RPM while extending bearing lifespan under continuous racing loads
- Precision-engineered outrunner bell with reinforced aluminum construction provides superior durability during high-G maneuvers and aggressive flight patterns
- Compact 26.5-gram weight maintains optimal drone weight distribution without compromising thrust output or flight dynamics
- 25A continuous current rating with 30A burst capability supports aggressive throttle inputs while maintaining thermal stability during extended flights
Applications and Use Cases
- FPV Drone Racing: Delivers the extreme thrust and rapid throttle response required for competitive drone racing leagues where millisecond acceleration differences determine race outcomes
- Acrobatic Quadcopter Flight: Enables aggressive 3D maneuvers, inverted flight, and high-speed directional changes in freestyle FPV piloting disciplines
- Long-Range FPV Cruising: The 7600 KV rating balances speed capability with efficiency, allowing extended flight times on 3S and 4S battery configurations for exploration flights
- Lightweight Racing Frames: Optimized for 5-inch and 6-inch racing drone platforms where the 26.5-gram weight contributes minimally to overall airframe mass while delivering maximum thrust
How to Use
Installation of the BrotherHobby R3.5 2205 requires mounting the motor to your drone frame using standard M2 or M3 mounting hardware, ensuring the 5mm shaft aligns precisely with your propeller adapter. Connect the three motor leads to your electronic speed controller (ESC) rated for minimum 25A continuous current, matching the color-coded wires to your ESC firmware configuration. Verify proper motor direction by performing a static test with no propeller attached, confirming clockwise or counter-clockwise rotation matches your flight controller configuration.
Before first flight, calibrate your ESC throttle range with your transmitter to establish minimum and maximum pulse width signals, typically 1000-2000 microseconds. Apply a 3S or 4S LiPo battery and perform a brief bench test to confirm smooth acceleration without stuttering or cogging. During initial flights, monitor motor temperature using thermal imaging or by touch after short 2-3 minute flights, ensuring the motor housing remains comfortably warm but not hot to the touch. Maintain proper propeller balance and avoid flying with damaged or bent propellers, as imbalance causes excessive vibration that accelerates bearing wear and reduces motor lifespan.
Frequently Asked Questions
What is the difference between 7600 KV and lower KV 2205 motors?
KV rating directly determines RPM per volt applied. The 7600 KV R3.5 produces 7600 RPM for every volt applied, reaching 112,800 RPM at 14.8V (4S). Lower KV motors like 6000 KV produce less RPM but more torque at the same voltage. For racing drones, higher KV motors enable faster acceleration and higher top speeds, while lower KV motors provide better torque characteristics for heavier payload applications. Your choice depends on your drone weight, propeller size, and performance priorities.
Can I use this motor on a 2S LiPo battery?
The BrotherHobby R3.5 2205 is rated for 3S-4S LiPo voltage range (11.1V - 14.8V). Operating on 2S (7.4V) will produce only 54,240 RPM maximum, insufficient thrust for most racing drones and likely causing inadequate lift. Additionally, 2S operation may not provide enough voltage to overcome motor cogging and produce smooth acceleration. We strongly recommend using minimum 3S LiPo batteries to achieve optimal performance and ensure proper motor operation within design specifications.
What ESC current rating should I use with this motor?
The BrotherHobby R3.5 2205 requires an ESC rated for minimum 25A continuous current, with 30A burst capability preferred. Using an under-rated ESC below 25A will cause the speed controller to throttle back or shut down during high-throttle racing maneuvers, limiting motor performance and potentially damaging the ESC through thermal overload. We recommend 30A or 35A ESCs for racing applications to provide thermal headroom and ensure consistent performance throughout extended flight sessions without voltage sag or current limiting.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy BrotherHobby R3.5 2205 Brushless Motor Online in India
Purchase the BrotherHobby R3.5 2205 Brushless Motor online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on BrotherHobby R3.5 2205 Brushless Motor with fast shipping and expert support.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.
BrotherHobby R3.5 2205 Brushless Motor
The BrotherHobby R3.5 2205 is a high-performance brushless outrunner motor specifically engineered for racing FPV drones and competitive quadcopters requiring maximum thrust efficiency. Professional FPV pilots and drone racing enthusiasts rely on this motor for its exceptional power-to-weight ratio, delivering consistent RPM performance across demanding flight conditions. This motor solves the critical challenge of achieving rapid acceleration and sustained high-speed flight while maintaining thermal stability during extended racing sessions.
Product Overview
The BrotherHobby R3.5 2205 operates on the principle of electromagnetic induction using a three-phase brushless design with 12 poles and 14 slots. The stator generates rotating magnetic fields that drive the outrunner bell at extreme speeds, reaching up to 7600 KV (RPM per volt applied). Unlike brushed motors, this brushless configuration eliminates mechanical friction losses, resulting in 85-90 percent efficiency ratings and significantly reduced heat generation during continuous operation. The compact 22mm diameter and 5mm shaft design integrate seamlessly into standard FPV drone frames while maintaining optimal weight distribution.
What distinguishes the R3.5 variant is its optimized stator winding configuration that balances high torque delivery with rapid throttle response characteristics essential for competitive drone racing. The motor utilizes premium copper wire with precision-wound stator coils to minimize electrical resistance and maximize magnetic coupling efficiency. Advanced bearing design reduces mechanical friction, allowing the motor to achieve peak performance at lower current draws compared to competing 2205 class motors, resulting in extended flight times and reduced battery stress.
Key Specifications
| Specification | Details |
| Product Type | Brushless Outrunner Motor |
| Brand | BrotherHobby |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Motor Size | 2205 (22mm stator diameter, 5mm shaft) |
| KV Rating | 7600 KV |
| Max Continuous Current | 25A |
| Max Burst Current | 30A (10 seconds) |
| Voltage Range | 3S-4S LiPo (11.1V - 14.8V) |
| Weight | 26.5 grams |
| Shaft Diameter | 5mm |
| Stator Poles | 12 Poles / 14 Slots |
| Max RPM | 112,800 RPM (at 14.8V) |
Key Features
- High KV Rating of 7600 delivers extreme RPM capabilities for rapid acceleration and high-speed flight performance in competitive racing scenarios
- Optimized R3.5 stator winding reduces electrical resistance by 15 percent compared to standard 2205 designs, improving efficiency and reducing heat generation
- Advanced ceramic ball bearings minimize mechanical friction, enabling smooth operation at peak RPM while extending bearing lifespan under continuous racing loads
- Precision-engineered outrunner bell with reinforced aluminum construction provides superior durability during high-G maneuvers and aggressive flight patterns
- Compact 26.5-gram weight maintains optimal drone weight distribution without compromising thrust output or flight dynamics
- 25A continuous current rating with 30A burst capability supports aggressive throttle inputs while maintaining thermal stability during extended flights
Applications and Use Cases
- FPV Drone Racing: Delivers the extreme thrust and rapid throttle response required for competitive drone racing leagues where millisecond acceleration differences determine race outcomes
- Acrobatic Quadcopter Flight: Enables aggressive 3D maneuvers, inverted flight, and high-speed directional changes in freestyle FPV piloting disciplines
- Long-Range FPV Cruising: The 7600 KV rating balances speed capability with efficiency, allowing extended flight times on 3S and 4S battery configurations for exploration flights
- Lightweight Racing Frames: Optimized for 5-inch and 6-inch racing drone platforms where the 26.5-gram weight contributes minimally to overall airframe mass while delivering maximum thrust
How to Use
Installation of the BrotherHobby R3.5 2205 requires mounting the motor to your drone frame using standard M2 or M3 mounting hardware, ensuring the 5mm shaft aligns precisely with your propeller adapter. Connect the three motor leads to your electronic speed controller (ESC) rated for minimum 25A continuous current, matching the color-coded wires to your ESC firmware configuration. Verify proper motor direction by performing a static test with no propeller attached, confirming clockwise or counter-clockwise rotation matches your flight controller configuration.
Before first flight, calibrate your ESC throttle range with your transmitter to establish minimum and maximum pulse width signals, typically 1000-2000 microseconds. Apply a 3S or 4S LiPo battery and perform a brief bench test to confirm smooth acceleration without stuttering or cogging. During initial flights, monitor motor temperature using thermal imaging or by touch after short 2-3 minute flights, ensuring the motor housing remains comfortably warm but not hot to the touch. Maintain proper propeller balance and avoid flying with damaged or bent propellers, as imbalance causes excessive vibration that accelerates bearing wear and reduces motor lifespan.
Frequently Asked Questions
What is the difference between 7600 KV and lower KV 2205 motors?
KV rating directly determines RPM per volt applied. The 7600 KV R3.5 produces 7600 RPM for every volt applied, reaching 112,800 RPM at 14.8V (4S). Lower KV motors like 6000 KV produce less RPM but more torque at the same voltage. For racing drones, higher KV motors enable faster acceleration and higher top speeds, while lower KV motors provide better torque characteristics for heavier payload applications. Your choice depends on your drone weight, propeller size, and performance priorities.
Can I use this motor on a 2S LiPo battery?
The BrotherHobby R3.5 2205 is rated for 3S-4S LiPo voltage range (11.1V - 14.8V). Operating on 2S (7.4V) will produce only 54,240 RPM maximum, insufficient thrust for most racing drones and likely causing inadequate lift. Additionally, 2S operation may not provide enough voltage to overcome motor cogging and produce smooth acceleration. We strongly recommend using minimum 3S LiPo batteries to achieve optimal performance and ensure proper motor operation within design specifications.
What ESC current rating should I use with this motor?
The BrotherHobby R3.5 2205 requires an ESC rated for minimum 25A continuous current, with 30A burst capability preferred. Using an under-rated ESC below 25A will cause the speed controller to throttle back or shut down during high-throttle racing maneuvers, limiting motor performance and potentially damaging the ESC through thermal overload. We recommend 30A or 35A ESCs for racing applications to provide thermal headroom and ensure consistent performance throughout extended flight sessions without voltage sag or current limiting.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy BrotherHobby R3.5 2205 Brushless Motor Online in India
Purchase the BrotherHobby R3.5 2205 Brushless Motor online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on BrotherHobby R3.5 2205 Brushless Motor with fast shipping and expert support.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.