Skip to content
English
  • There are no suggestions because the search field is empty.

The propulsion data that I obtained from the thrust stand is not matching the advertised performance from the motor or propeller manufacturer.

When you observe a difference in performance (thrust, torque, efficiency) between the value tested on the thrust stand and the value given by the motor/propeller manufacturer, please always keep in mind that the manufacturers may sometimes overstate the performance of their product.

Also, depending on the power source, the voltage drop within a LiPo battery may also significantly affect the measured performance compared to having a relatively constant output power supply.

If you observe a significant difference (> 15%) between the measured data and the published data, please follow this guideline:

  • When using the Series 1585, recalibrate all the load cells.
  • Check if the wire-connection is correct.
  • Open the RCbenchmark GUI and go to Automatic control tab
  • Run an automatic script: sweep - discrete with the following parameters:
  • var minVal = 1000; // Min. input value [700us, 2300us]
  • var maxVal = 1800; // Max. input value [700us, 2300us]
  • var stepsQty = 8; // Number of steps
  • var settlingTime = 5; // Settling time before measurement input change [s]
  • var samplesAvg = 25; // Number of samples to average
  • var stepsGoDown = false; // If true, the test will step down, if false, the steps will only go up.
  • var repeat = 2; // Number of times to repeat the same
  • By finishing this script, you shall be able to find the at each throttle, the performance measurement (thrust, torque, voltage, current, RPM, efficiencies) in the output CSV file.
  • Please first compare the relation RPM-thrust on the same propeller. Generally speaking, given exactly the same propeller, the thrust shall be very similar with a given RPM. If you find your thrust is significantly smaller than the advertised thrust at the same RPM, go to section 3.3.
  • And then, please try to locate the motor efficiency in the CSV file, to see if you observe any non-reasonable efficiency (e.g. <30% or >100%), go to section 3.2 for more detailed troubleshooting steps.
  • If you find both the RPM-thrust and the efficiency are normal but still believe the measured data is inferior to the stated value from the motor/propeller manufacturer, you may contact us by email at support@tytorobotics.com and include the following info:
    • Subject: Measurement discrepancies
    • Motor, propeller and ESC that you are using
    • Motor, propeller published performance data from the manufacturer
    • The CSV output file you ran with the thrust stand
    • Power source
    • Picture of your setup