TOPTORQ R200: A 31-Inch Folding Carbon Fiber Propeller for Heavy-Lift UAV Programs
Selecting a propeller for a heavy-lift industrial UAV requires more than matching diameter and pitch. Propeller diameter, pitch, blade count, material, rotational speed, motor torque, battery voltage, ESC capacity and airframe clearance all affect the final propulsion-system result.
The TOPTORQ R200 31-inch folding propeller is designed for heavy-lift industrial multirotor applications that require a large, two-blade carbon fiber propeller. With a stated diameter of 31.5 inches, an 11-inch pitch and a recommended operating range of 1,800–2,400 RPM, the R200 is positioned for large propulsion systems rather than compact FPV or lightweight consumer drones.
The R200 has a stated maximum thrust of up to 10 kg. This figure should be treated as a configuration-dependent reference until the corresponding test conditions are documented, including motor model, battery voltage, RPM, atmospheric conditions, test stand and whether the value applies to one propeller or a complete propulsion unit.
Engineering note: A propeller’s published thrust is not an aircraft-level payload rating. Confirm the complete motor–propeller–ESC–battery combination with measured thrust, current, power, RPM, vibration and temperature data before flight deployment.
Why a Large Folding Propeller Matters on an Industrial UAV
Heavy-lift UAVs often need to carry cameras, thermal payloads, delivery equipment, agricultural systems, mapping sensors or other mission hardware. A large propeller can support the required thrust at a lower rotational speed than a much smaller propeller, but the final outcome depends on the matched motor, airframe and operating point.
A folding propeller can also support practical transport and storage requirements. When the aircraft is powered down or the propulsion system is not rotating, the blades can fold along the hub assembly, subject to the final hub and mounting design. This can help reduce the packed footprint, but it does not remove the need to verify blade clearance, folding direction, hub compatibility and in-flight locking behavior.
The R200 is therefore best evaluated as a heavy-lift UAV propulsion component. It should be selected through system-level engineering rather than as a standalone replacement part.
R200 Technical Specifications
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Specification
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R200 value
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Model
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R200
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Propeller diameter
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31.5 in
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Pitch
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11 in
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Blade count
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2-blade
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Material
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Carbon fiber
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Weight
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130 g
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Recommended operating speed
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1,800–2,400 RPM
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Maximum stated speed
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Up to 3,600 RPM
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Maximum stated thrust
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Up to 10 kg
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Application
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Heavy-lift industrial UAV
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What These Specifications Mean in Practice
The 31.5-inch diameter places the R200 in the large-propeller category. Before installation, the engineering team should confirm the aircraft’s arm length, motor-to-motor spacing, neighboring-propeller clearance, landing-gear clearance, payload clearance and ground clearance.
The 11-inch pitch describes the propeller’s geometric pitch. It should not be interpreted as a guaranteed forward speed or efficiency value. Actual thrust and power depend on RPM, air density, inflow, motor torque, blade geometry, airframe interference and the aircraft’s flight condition.
The recommended range of 1,800–2,400 RPM provides a starting point for system testing. The stated maximum of up to 3,600 RPM should not be used as a continuous operating target unless the final propeller, hub, motor and airframe configuration has been validated for mechanical stress, vibration, power and thermal performance.
Recommended Applications for the R200
Heavy-Lift Multirotor Platforms
The R200 can be considered for large multirotors that need substantial static thrust from each propulsion unit. Typical evaluation factors include total takeoff weight, number of motors, required hover margin, battery voltage, motor torque and mission duration.
For a multirotor, the target is not simply to reach the maximum published thrust. The system should maintain an appropriate margin for takeoff, wind, maneuvering, payload variation and battery-voltage reduction. The correct margin depends on the aircraft architecture and the operating environment.
Industrial Inspection and Mapping UAVs
Inspection and mapping platforms may carry stabilized cameras, LiDAR, multispectral sensors or other equipment. The R200 should be evaluated for efficiency and vibration at the aircraft’s normal mission weight, not only under maximum-thrust conditions.
The final installation should be checked for propeller-induced vibration, image quality, sensor stability, motor temperature and power consumption throughout the planned flight profile.
Agricultural and Utility UAVs
Agricultural and utility aircraft may operate with tanks, dispensing systems, cables or other specialized payloads. These missions can create changing weight, center-of-gravity and operating-load conditions. The R200 system should therefore be validated at the relevant minimum and maximum payload states.
If the UAV operates in dust, moisture, chemicals, high temperatures or changing air density, the full propulsion system and material compatibility should be reviewed separately. The carbon fiber material specification alone does not establish chemical resistance, waterproofing or an environmental rating.
Delivery and Cargo UAVs
Cargo and delivery aircraft require predictable thrust and repeatable operation. R200 evaluation should include takeoff performance, hover power, climb behavior, emergency landing procedures, blade inspection intervals and replacement logistics.
For fleet applications, it is also important to document the propeller’s serial or batch identification, balance checks, inspection criteria and approved installation procedure.
How to Match the R200 with a Motor and ESC
A 31.5-inch propeller creates a significant mechanical and electrical load. The motor must be capable of producing the required torque at the intended RPM without exceeding its current, power or temperature limits. The ESC must also support the actual current and voltage requirements with appropriate continuous-operation margin.
Do not choose a motor based on diameter or KV alone. Request or generate a test matrix that records at least the following operating data:
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Test data
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Why it matters
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RPM
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Confirms the propeller is operating in the intended range
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Thrust
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Establishes the lifting capability at each test point
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Voltage
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Shows the actual battery condition during the test
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Current
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Determines electrical loading on the motor, ESC and battery
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Power
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Helps compare efficiency and endurance at the mission point
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Motor temperature
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Indicates thermal margin during sustained operation
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Vibration
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Identifies balance, mounting or structural problems
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Ambient conditions
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Makes test results more repeatable and comparable
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The recommended propeller RPM range should be checked against the motor’s continuous operating envelope. A motor that can briefly reach a target RPM may not be suitable for sustained heavy-lift operation at that point.
Folding Propeller Installation Considerations
Before installing the R200, confirm the exact hub, shaft, adapter, bolt pattern, locknut, folding mechanism and blade-retention hardware supplied with the selected configuration. A large propeller must remain securely located under acceleration, deceleration, vibration and changing aerodynamic loads.
The installation review should include the following checks:
• Confirm the propeller rotates in the correct direction for the motor position.
• Verify the required CW and CCW configuration if the aircraft uses paired rotations.
• Check blade-to-frame, blade-to-payload and blade-to-ground clearance.
• Confirm that the folding blades move freely without contacting wires, arms or the hub structure.
• Use the specified fasteners, tightening procedure and retention hardware.
• Inspect the blade surface, leading edge, hub area and root after transport and flight.
• Confirm that the propeller is balanced according to the supplier’s approved procedure.
• Recheck fastener security and blade condition after the first flight test.
The exact installation procedure must follow the final R200 hub and aircraft design. A product page should not imply that the propeller is universally compatible with every large motor or mounting system.
Carbon Fiber Construction: Potential Benefits and Required Checks
Carbon fiber is commonly selected for large UAV propellers because it can offer a high stiffness-to-weight ratio when properly designed and manufactured. For a heavy-lift system, stiffness may influence blade deformation, aerodynamic consistency and vibration behavior.
However, material alone does not prove a propeller’s performance or durability. Engineering teams should request information about layup, resin system, surface finish, balance tolerance, inspection method and operating limitations where available.
The blade should be inspected for cracks, delamination, impact marks, edge damage, deformation and hub-area defects. Any propeller that has experienced a hard impact or abnormal vibration should be removed from service until it has been assessed according to the supplier’s procedure.
Deployment Checklist Before Flight Testing
Before approving the R200 for flight testing, confirm the following items with the propeller supplier and propulsion-system engineer:
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Area
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Confirmation required
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Aircraft
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Maximum takeoff weight, motor count, arm spacing and mission payload
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Motor
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Torque, RPM range, voltage, current, power and thermal limits
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ESC
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Continuous and peak current, voltage rating, cooling and control protocol
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Battery
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Cell count, nominal voltage, fully charged voltage, capacity and discharge capability
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Hub
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Shaft interface, mounting pattern, retention hardware and torque procedure
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Clearance
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Neighboring propeller, frame, payload, landing gear and ground clearance
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Thrust data
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Test conditions for the stated 10 kg maximum thrust
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RPM limits
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Basis for the 1,800–2,400 RPM recommendation and 3,600 RPM maximum
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Balance
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Static or dynamic balance method and acceptance tolerance
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Environment
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Temperature, altitude, wind, dust, moisture and chemical exposure
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Inspection
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Pre-flight, post-flight and impact-replacement criteria
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Documentation
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Installation drawing, approved hardware, test report and revision control
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How to Evaluate the Stated 10 kg Maximum Thrust
The stated maximum thrust of up to 10 kg can be useful as an initial comparison point, but it should not be used to calculate payload directly. The test setup must be known before the value can be compared with another propeller.
For meaningful evaluation, record the motor model, battery voltage, ESC, commanded RPM, measured RPM, current, input power, ambient temperature, air density or altitude, test-stand configuration and test duration. Confirm whether the result represents one propeller, one propulsion unit or another configuration.
A production UAV should also be assessed at its typical hover point and mission point. Maximum thrust may occur at a high-power condition that is unsuitable for continuous operation. Endurance, thermal margin, noise, vibration and reserve power can be more important than the maximum number.
Is the R200 Suitable for Your UAV?
The TOPTORQ R200 is a potential fit for a heavy-lift industrial UAV when the aircraft is designed around a large 31.5-inch propeller and the complete propulsion system supports the required RPM, torque and clearance. It is not a universal replacement for smaller propellers or for aircraft with limited arm spacing.
The most suitable next step for an OEM or fleet program is a configuration review. Share the aircraft’s total weight, number of motors, target payload, battery voltage, motor model, ESC model, required endurance and destination market. This allows the propeller to be evaluated as part of the intended UAV system rather than in isolation.
FAQ:
- What size is the TOPTORQ R200 propeller?
The R200 has a stated diameter of 31.5 inches and an 11-inch pitch. It is a large two-blade propeller intended for heavy-lift industrial UAV applications.
- What material is the R200 made from?
The R200 is specified as a carbon fiber propeller. Final material, construction, balance and inspection details should be confirmed in the latest product documentation.
- What RPM range is recommended for the R200?
The stated recommended operating range is 1,800–2,400 RPM. The product specification also states a maximum speed of up to 3,600 RPM. These values must be evaluated against the final motor, hub, ESC, battery, mounting and test conditions.
- How much thrust can the R200 produce?
The stated maximum thrust is up to 10 kg. Because thrust depends on the motor, RPM, battery, test stand and environmental conditions, the value should be treated as a reference until the complete test conditions are confirmed.
- Is the R200 suitable for a heavy-lift drone?
The R200 is positioned for heavy-lift industrial UAVs, but suitability depends on the complete aircraft design. Confirm motor torque, battery voltage, ESC capacity, propeller clearance, structural loads, vibration and the required payload margin before deployment.
- Is the R200 compatible with every large UAV motor?
No. Compatibility depends on the hub, shaft interface, mounting hardware, rotation direction, motor torque, RPM range and aircraft structure. Request the installation drawing and confirm the final configuration before ordering.
- Why use a folding propeller on an industrial UAV?
A folding design may help reduce the packed footprint during transport or storage. It must still be validated for blade retention, folding movement, hub compatibility, vibration and clearance in the intended aircraft.
- Should I use the R200 at 3,600 RPM continuously?
The stated maximum speed should not automatically be treated as a continuous operating target. Confirm the continuous operating limit and validate mechanical stress, vibration, current, power and temperature with the complete propulsion system.
Request an R200 Configuration Review
Planning a heavy-lift UAV around a 31-inch propeller? TopTorq can review your aircraft requirements, motor and ESC configuration, battery voltage, payload target and destination market to determine whether the R200 is appropriate for standard supply or a configured OEM program.
Related Internal Links
Technical disclaimer: This article is for product education and preliminary component selection. The R200 must be validated with the final motor, ESC, battery, hub, airframe and payload before flight or production deployment.
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