RTF 4140
RTF 4140
Fixed-wing Pusher Motor
High Efficiency and
Outstanding Performance

RTF 4140-300KV-PL180A-APC16*10-44.4V

RTF 4140-300KV-PL180A-APC16*12-44.4V

RTF 4140-300KV-PL180A-APC17*8-44.4V

RTF 4140-300KV-PL180A-APC17*10-44.4V

RTF 4140-300KV-PL180A-Folding Propeller15*12-44.4V

RTF 4140-300KV-PL180A-Folding Propeller16*13-44.4V
Lightweight Structural Design with
Optimized Strength
Rotor BracketThe rotor bracket features a side air-vent structure, which effectively reduces weight and improves heat dissipation efficiency while maintaining structural strength.
Stator MountThe stator mount uses a large hollowed-out design for weight reduction, resulting in a cleaner structure and improved machinability of the parts.
Triple-Bearing DesignTriple-bearing design enhances durability and extends the motor's service life.
Dual-Locking Protection for
Enhanced Reliability

A dual mechanical locking system combining a circlip and screws,

reinforced with anti-loosening treatment,

provides multiple protections for reliable operation at high speeds.

Circlip Screw
Efficient Self-Cooling Structure

The motor's outer rotor bracket features a self-cooling structure

that rapidly dissipates heat from the coils during flight,

maintaining lower operating temperatures for greater efficiency and a longer lifespan.

High-Spec Materials for Superior
Performance and Protection

The motor adopts
high-performance
0.2 mm low-iron-loss
silicon steel sheets
from a leading brand.

The multi-strand parallel
winding process of the
enameled wire
significantly increases
the slot fill factor,
reducing operating
temperature under rhe
same power output.

220℃
high-temperature
resistant enameled
wire to meet users'
pursuit of performance.

Featuring high-strength
N45SH arc magnets with
a retaining ring,
ensuring stronger torque,
a uniform magnetic
air gap, and more
consistent power output.

Product NameRTF 4140
Specification
  • Model
  • Motor Size
  • Slot& Pole
  • Stator Size
  • Dynamic balance
  • Stator process
  • Bearing
  • Enamelled wire
  • Fiber Screw Thread
  • Isolation test
  • Motor mounting dimensions
  • RTF 4140 300KV
  • Φ51*H73.5mm
  • 12N14P
  • Φ40.6*40mm
  • ≤20mg
  • High standard silicon steel sheet, 180℃ high temperature resistance paint-coat
  • 1680ZZ
  • 220℃ high temperature resistant, C class insulation
  • 4×M3@Φ20
  • 500V AC high voltage resistance test
  • 4×M4@Φ30
Specification
  • KV
  • Battery(LiPo)
  • No-load current
  • Maximum current
    (Non-hermetic Ambient Temperature ≤ 25℃)
  • Rated power output
  • Max power
  • Max thrust
  • Resistance
  • Wire Size
  • Wire length
  • Weight (With wire)
  • 300
  • LiPo-12S
  • 2.6A
  • 155.7A/10s
  • 1679W
  • 6907.3W/10s
  • 12.7kg
  • 23.3mΩ
  • enameled wire direct lead-out
  • 120mm
  • 575g
Recommended application combinations
  • Motor
  • Propeller
  • ESC
  • Battery
  • RTF 4140SL 300KV
  • APC16*10 APC16*12 APC17*8 APC17*10 15*12 16*13
  • PLATINUM HV 180A V5/Skywalker HV 160A OPTO V2
  • 12S LiPo
Support

Manuals & Documents

Disclaimer

The purpose of this website is only to introduce you to the basic situation of HOBBYWING company and product information. Unless otherwise stated, all information provided on this website should not be regarded as an offer or acceptance, and this website will not assume any binding obligations to you as a result of the provision of information. For all your requests, HOBBYWING reserves the full right to decide whether to commit or not.

This Website and its contents are provided for your convenience on an "as is" basis and your use of this Website is at your sole risk. HOBBYWING does not guarantee that this website will be uninterrupted or error-free, and reserves the right to amend this website or withdraw access to this Website at any time. We make no warranties, express or implied, as to the content, existence, accuracy or reliability of this Website, including, but not limited to, warranties of title, non-infringement or implied warranties of merchantability or fitness for a particular purpose or use.

HOBBYWING shall not be liable for any direct, indirect, incidental, special or consequential damages, loss of profits or business interruption caused by the use or inability to use the services provided by the Website, even if HOBBYWING has been advised of the possibility of similar losses. The exclusions and limitations of the warranty liability of HOBBYWING shall be effective to the extent permitted by applicable law.

HOBBYWING shall not be liable for any damage or loss to your computer system or any other software, hardware, IT system or property caused by viruses or other destructive programs caused by accessing, viewing and using this website or downloading any content from this Website (including but not limited to 2D model files, 3D model files).

HOBBYWING shall not be liable for any direct or indirect damage or loss caused by any third party using illegal means to access the website to obtain the relevant passwords, information and content.

If you or your company is located in the United States or Canada, you need to fill out this disclaimer confirmation letter online and submit it successfully before you can download the relevant materials you are interested in. The link address you fill in online is https://www.hobbywingdirect.com/pages/digital-file-release-form

If you do not agree with this disclaimer, please do not continue to this page. If you continue to access, browse and use this interface, you have read, understood and agreed to be bound by this statement and comply with all applicable laws and regulations.

HOBBYWING reserves the right to correct, modify and update this statement at any time.

Confirm >

FAQ

RTF 4140
RTF 4140
Fixed-wing Pusher Motor
High Efficiency and
Outstanding Performance

RTF 4140-300KV-PL180A-APC16*10-44.4V

RTF 4140-300KV-PL180A-APC16*12-44.4V

RTF 4140-300KV-PL180A-APC17*8-44.4V

RTF 4140-300KV-PL180A-APC17*10-44.4V

RTF 4140-300KV-PL180A-Folding Propeller15*12-44.4V

RTF 4140-300KV-PL180A-Folding Propeller16*13-44.4V
Lightweight Structural Design with
Optimized Strength
Rotor BracketThe rotor bracket features a side air-vent structure, which effectively reduces weight and improves heat dissipation efficiency while maintaining structural strength.
Stator MountThe stator mount uses a large hollowed-out design for weight reduction, resulting in a cleaner structure and improved machinability of the parts.
Triple-Bearing DesignTriple-bearing design enhances durability and extends the motor's service life.
Dual-Locking Protection for
Enhanced Reliability

A dual mechanical locking system combining a circlip and screws,

reinforced with anti-loosening treatment,

provides multiple protections for reliable operation at high speeds.

Circlip Screw
Efficient Self-Cooling Structure

The motor's outer rotor bracket features a self-cooling structure

that rapidly dissipates heat from the coils during flight,

maintaining lower operating temperatures for greater efficiency and a longer lifespan.

High-Spec Materials for Superior
Performance and Protection

The motor adopts
high-performance
0.2 mm low-iron-loss
silicon steel sheets
from a leading brand.

The multi-strand parallel
winding process of the
enameled wire
significantly increases
the slot fill factor,
reducing operating
temperature under rhe
same power output.

220℃
high-temperature
resistant enameled
wire to meet users'
pursuit of performance.

Featuring high-strength
N45SH arc magnets with
a retaining ring,
ensuring stronger torque,
a uniform magnetic
air gap, and more
consistent power output.

Product NameRTF 4140
Specification
  • Model
  • Motor Size
  • Slot& Pole
  • Stator Size
  • Dynamic balance
  • Stator process
  • Bearing
  • Enamelled wire
  • Fiber Screw Thread
  • Isolation test
  • Motor mounting dimensions
  • RTF 4140 300KV
  • Φ51*H73.5mm
  • 12N14P
  • Φ40.6*40mm
  • ≤20mg
  • High standard silicon steel sheet, 180℃ high temperature resistance paint-coat
  • 1680ZZ
  • 220℃ high temperature resistant, C class insulation
  • 4×M3@Φ20
  • 500V AC high voltage resistance test
  • 4×M4@Φ30
Specification
  • KV
  • Battery(LiPo)
  • No-load current
  • Maximum current
    (Non-hermetic Ambient Temperature ≤ 25℃)
  • Rated power output
  • Max power
  • Max thrust
  • Resistance
  • Wire Size
  • Wire length
  • Weight (With wire)
  • 300
  • LiPo-12S
  • 2.6A
  • 155.7A/10s
  • 1679W
  • 6907.3W/10s
  • 12.7kg
  • 23.3mΩ
  • enameled wire direct lead-out
  • 120mm
  • 575g
Recommended application combinations
  • Motor
  • Propeller
  • ESC
  • Battery
  • RTF 4140SL 300KV
  • APC16*10 APC16*12 APC17*8 APC17*10 15*12 16*13
  • PLATINUM HV 180A V5/Skywalker HV 160A OPTO V2
  • 12S LiPo
Support

Manuals & Documents

Disclaimer

The purpose of this website is only to introduce you to the basic situation of HOBBYWING company and product information. Unless otherwise stated, all information provided on this website should not be regarded as an offer or acceptance, and this website will not assume any binding obligations to you as a result of the provision of information. For all your requests, HOBBYWING reserves the full right to decide whether to commit or not.

This Website and its contents are provided for your convenience on an "as is" basis and your use of this Website is at your sole risk. HOBBYWING does not guarantee that this website will be uninterrupted or error-free, and reserves the right to amend this website or withdraw access to this Website at any time. We make no warranties, express or implied, as to the content, existence, accuracy or reliability of this Website, including, but not limited to, warranties of title, non-infringement or implied warranties of merchantability or fitness for a particular purpose or use.

HOBBYWING shall not be liable for any direct, indirect, incidental, special or consequential damages, loss of profits or business interruption caused by the use or inability to use the services provided by the Website, even if HOBBYWING has been advised of the possibility of similar losses. The exclusions and limitations of the warranty liability of HOBBYWING shall be effective to the extent permitted by applicable law.

HOBBYWING shall not be liable for any damage or loss to your computer system or any other software, hardware, IT system or property caused by viruses or other destructive programs caused by accessing, viewing and using this website or downloading any content from this Website (including but not limited to 2D model files, 3D model files).

HOBBYWING shall not be liable for any direct or indirect damage or loss caused by any third party using illegal means to access the website to obtain the relevant passwords, information and content.

If you or your company is located in the United States or Canada, you need to fill out this disclaimer confirmation letter online and submit it successfully before you can download the relevant materials you are interested in. The link address you fill in online is https://www.hobbywingdirect.com/pages/digital-file-release-form

If you do not agree with this disclaimer, please do not continue to this page. If you continue to access, browse and use this interface, you have read, understood and agreed to be bound by this statement and comply with all applicable laws and regulations.

HOBBYWING reserves the right to correct, modify and update this statement at any time.

Confirm >

FAQ