Which product is right for me?

  •    Price
  •    Comparison overview
  •    Typical uses
  •    Software
  •    Interface
  •    Outputs
  •    Direct measurements*
  •    Derived measurements
       (calculated by software)
  •    Precision Ohmmeter
  •    Supported addons
  •    Safety and equipment protection
  •    Calibration
  •    Data-logging
  •    Automatic control
  •    Construction
  •    Additional features

Series 1520
  • $165
  • Grasp the power of automation, data logging, and accurate real-time measurements at a fraction of the cost of professional dynamometers and thrust test stands.
  • Power systems comparisons
    Suitable for most hobbyists
  • Simplified 1580 software
    Unsupported features removed
  • USB (cable included)
  • Control ESC throttle signal
    Control up to 3 servo motors
  • Voltage (0-35 V)
    Current (40 A continuous)
    Power (0-1400 W)
    Thrust (±5 kg)
    Motor rotation speed**
  • Electrical power
    Overall efficiency (thrust vs power)
  • -
  • Optical RPM probe**
  • Automatic cutoffs for all direct measurements
  • Factory calibrated
  • On-demand, or continuous
    All data recorded simultaneously
    CSV format for opening in Excel, MATLAB, etc..
  • Automate everything, from control to recording
    Use built-in script presets for quickly testing
    Harness the power of javascript
  • Durable powder-coated paint for long lasting and professional finish
    Strong aluminum base
    Full circuit diagnostics at factory
  • Real-time plots
    Change working units (g, oz, etc...)

Series 1580
  • $495
  • Professionnal bench tests with advanced features such as torque and vibration measurements, support for temperature addons, included precision calibration hardware, and built-in precision ohmmeter for custom motor winding.
  • Motor and propeller characterization
    Suitable for R&D, academy, and manufacturing quality control.
  • Open source
    Windows, MAC, Linux, Chromebook
    Frequent, fully automatic updates
    Simple no-download firmware updates
    Loved by our customers
  • USB (cable included)
  • Control ESC throttle signal
    Control up to 3 servo motors
  • Voltage (0-35 V)
    Current (40 A continuous)
    Power (0-1400 W)
    Thrust (±5 kg)
    Motor rotation speed**
    Motor torque (±1.5 Nm)
    Accelerometer on PCB (±8 g)
    Precision ohmmeter (0.003 to 240 Ohm)
  • Electrical power
    Mechanical power
    Motor efficiency
    Propeller efficiency
    Overall efficiency (thrust vs power)
    Vibration level (from accelerometer)
  • Specially designed for very low resistances
    Measure motor winding resistance
    Check winding integrity for damage
  • Optical RPM probe**
    Up to 3 temperature probes
    Pressure sensor (wind tunnel pitot tube)
    Up to 3 future addons
  • Automatic cutoffs for all direct measurements
    Individual cutoff for each temperature probe
    Excessive vibration or impact cutoff
  • Included 200g precision weight
    Included torque calibration hardware
    Follow simple calibration wizards in software
  • On-demand, or continuous
    All data recorded simultaneously
    CSV format for opening in Excel, MATLAB, etc..
  • Automate everything, from control to recording
    Use built-in script presets for quickly testing
    Harness the power of javascript
    Scripting support: we will help you debug and write your own custom scripts
  • Durable powder-coated paint for long lasting and professional finish
    Strong aluminum base
    Full circuit diagnostics at factory
  • Real-time plots
    Change working units (g, oz, etc...)

* Not recommended for miniature systems (<25g thrust).
** Use the RCbenchmark optical RPM probe for motors with Kv < 600RPM/V, for brushed motors, and for accurately measuring speeds lower than 1300RPM

26 thoughts on “Which product is right for me?

  1. When will the Series 1520 be available?

    Thanks

    ~chuck

    1. Hi Chuck,

      We are planning to start shipping at the end of February. All components are designed and on order. Thanks for your interest!

  2. I want to know what the size motor limitations are on these products. We work only with Fixed wing applications and want to use this device for our motor option selections. Please advise.

    1. Hi John,

      All the numbers about the limitation I will discuss are in the datasheet (Series 1580 and Series 1520). The physical size of the motor mount is limited by the bolt pattern (see datasheet). From experience, the bolt pattern will mount almost all motor types. Inrunners have a limitation on the can size for the Series 1580 (55mm length and 48mm diameter). The limitation on thrust, current, torque and voltage are specified in the datasheet.

  3. If I purchase the model 1520 now, is there an upgrade kit to go to model 1580??

    1. Not at the moment unfortunately, both units share relatively few parts, and an upgrade kit would add a lot complexity.

  4. What is the maximum sample frequency for the load cell data?

    1. The load cells refresh at a constant rate of about 8Hz.

  5. Any option for motor consume more than 30A?

    Thank you,
    Nestor (Spain)

    1. Sorry, for 40A…

      1. Hi Nestor,

        We already replied by email, but here is the answer if others are interested. The device was designed to support more current, but we have not certified it yet for such use. If you are interested to increase the limit, contact us by email, but you have to understand that such modification is not covered by the warranty, and you have to closely monitor the temperature of the shunt resistors.

  6. how long it will take to ship your product in the Philippines. Interested of you 1580 model.

    Thanks

    1. We have two shipping options for the Philippines:
      Express 5-8 days, or Priority 3-4 days.
      To get an estimate of the shipping price, add the item in your cart and go to the checkout page. Enter your country and ZIP code if any and you will get a shipping quote.
      Thanks

  7. hello~~

    The Series 1580, could you tell me the the specification parameter of the force sensor, the accuracy of the force sensor and Max sampling frequency.

    1. The thrust sensor has a typical accuracy/noise of ±2 grams and ±0.002 Nm torque after calibration. The scripting interface provides functions to average multiple samples. The max sampling frequency is about 10Hz for the load cell sensors. Please send us an email to info@rcbenchmark.com or give us a call on our toll-free number to discuss your application with us.

  8. I have two questions about Series 1580:

    1. This page says the kit comes with open-source software. Where can we get the source code?

    2. Do you provide educational discount?

    Thank you very much!

    1. Hi! The code is here. We don’t offer educational discounts. However, we have sponsored student projects (AIAA competitions, etc…) through discounts, send us your sponsor package!

  9. Can the 1580 with it’s vibration sensor allow the unit to be used as a dynamic balancer? Perhaps this could be a future addon as all that would be required would be a way of indexing the motors orientation relative to the vibration indicated. This would allow the placement of balancing material or removal of material from a precise point around the diameter of the motor.

    A fairly simply dynamic balancer, but far and away better than what 99% of us would have and would totally justify the cost of the higher end unit in my opinion.

    🙂

    I’d buy one right now for just this feature alone.

    1. Hi Gord,

      We fully agree that dynamic balancing is very useful. One of our team member worked with industrial balancing tool, and they could definitely be used for UAVs. As you said though, it would have to be a separate add-on. The accelerometer is excellent to approximate vibration level, but it would need to be installed closer to the motor plate for balancing. We don’t have plan for it yet, but we may have a stand alone dynamic balancer in the future.
      Cheers,

  10. What is the accuracy for the thrust and torque measurement? In the datasheet the tolerance is stated as 0.5%, does it mean it can only measure 0.5% of 5kg which is 25g?

    1. Hi Elliot,

      Here is more information on the accuracy. The noise level is around 1-2 gf. The tool is calibrated with a 200 g weight. The measurement is repeatable within 1gf, which is how we obtained the 0.5% accuracy. This resolution is sufficient for the tests of most designers. If you need to maximize accuracy, you can use a heavier calibration weight of 1-5 kgf, and use the included script to average measurements, which reduces noise.

  11. Hi, great product it is performing very well. Is there a reason for the Hinges (Pivot Mounts) not being a solid right angle piece?

    1. Hi Chris,

      It is necessary to allow the torque load sensors to deflect without constrain. The motion is microscopic, but if the hinges were solid brackets, they would apply a reaction torque against this small motion, resulting in erroneous torque readings. Please see the “How do you measure torque?” article in our FAQ section for more details on this.

      Sincerely,

  12. I’m very interested in that product
    but if there is a lot of motors and props,how can I decide which prop for which motor?
    I have a way to solve this. but my programming is not good
    follow these rules:
    1.with rpm increases propeller torque increased
    2.with rpm increases motor torque decreased
    3.motor torque > propeller torque range is available
    I don’t think we should measure propeller and motor in the same time
    we should:
    1.recording every propeller torque in different rpm
    2.recording every motor voltange amp torque in different rpm
    3.use every motor torque data virtually dirve all propellers,solve all possible rpm limit
    4.decide needs.do you want max thrust or best efficiency? find which result best
    *5.maybe we can use motor rpm × torque > propeller rpm × torque.find a motor max power is 100 Watt in 21,000 rpm and a 100 Watt big propeller works in 7,000 rpm so the best gear ratio is 1:3
    *6.show both with gear best result and direct drive best result,and show infomation for example : increase 21% thrust (150g) need a gearbox with 1:3gear ratio 1kg·cm torque 21,000 and 7000 rpm

    1. Hi Walter,

      Thanks for your interest! I think you have a good method. Here is the method we recommend.

      1) Test all your propellers. You then know their mechanical efficiency (Thrust/ mechanical power), as given by the software, and their torque-rpm curve.
      2) Select the best propeller for your application. Take into account geometric limitations and inertia of the prop.
      3) Test all your motor with different props to create a map of their efficiency as a function of torque and RPM.
      4) Select the best motor for your prop with your motor test data from step 3. It is simple, as you know what RPM-torque you need to drive the prop.
      5) (Optional) Adjust the ESC timing and motor winding to maximize efficiency.

      We hope our software and hardware can help as it measure torque (and mechanical efficiency), and the automated features save a lot of time and increase repeatability.

      Cheers,

  13. Is there anyway to test at 12S 44.4 V? I understand the rig can go up to 35 V max.

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