Inertia Slot Car Dyno

SKU: SD1-13V-45A-A1-24
Availability: In stock
All in-stock items will be ship within 1-2 weeks.
Slot Car Scale:

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This is a inertia dynamometer (dyno) that measures the rpm, kv, voltage, current draw, power and torque output of a slot car. This dyno is great tool for motor analysis, gearing calculation, etc. The dyno is coupled at the tires of the slot car to accelerate the inertial mass. We will call this a ‘flywheel’ for simplicity. Our electronic board takes the flywheel’s inertia (resistance of an object to a change in its state of motion), measures the rate it takes to accelerate and calculates the output power and torque of your motor. Our dyno repeatedly measures and calculates power in small increments to produce an accurate graph on a PC of the engine’s power characteristics. 


  • Tire RPM
  • Motor RPM
  • Speed
  • kV/rpm
  • Torque
  • Power In (Need H1 V/C sensor. Sold Separately)
  • Power Out
  • Up to three temperature readings
  • Voltage (Need H1 V/C sensor. Sold Separately)
  • Current (Need H1 V/C sensor. Sold Separately)
  • mAh (Need H1 V/C sensor. Sold Separately)
  • Efficiency (Need H1 V/C sensor. Sold Separately)

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The dyno its completely aluminum. It uses a high quality 6061 aluminum frame cover around the flywheel to protect from high rpm motors. Yet we still offer the ability to see the flywheel spinning action by adding a clear window screen. 

miniPRO® Slot Dyno Safety First Showing Enclosure Materials

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The dyno uses the engine to simply accelerate a flywheel (variable load). We calculate the power and torque of the motor by knowing the flywheels inertia (resistance of an object to a change in its state of motion) and its acceleration. We offer different sizes and materials to best suit your application. Additional flywheels can be purchased separately.

miniPRO® Slot Dyno Flywheel

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The Foam pad around the holder of the car reduces vibration during testing. Optional screw holes are available in case you want to securely fasten the dyno into baseboard. Three optional screws are included in the kit.

 miniPRO® Slot Car Dyno Base Image



The slot dyno can easily change the size of the track and allows you to change tire size of the tire holders for 1/24 and 1/32 slot cars.
 Tire Holder Scale Holder Outside Diam. Min. Tire Diam. Max. Tire Diam.
1/24 32mm 12mm 30mm
1/32 22mm 16mm 20mm

miniPRO® Slot Car Dyno Adjustable Track Image
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The dyno uses a custom PCB with a build Optical RPM sensor, delivering low noise and accurate readings. It features a built-in micro USB for connection to your PC. It includes one external LCD port, one external throttle controller port, one current and voltage sensor port, and two temperature sensor ports.

miniPRO® Slot Car Dyno Electronic Board Image

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A full set of 4 high-speed, blue-sealed and ceramic ball-bearings are used throughout the flywheel, and tail stock. All of the bearings are degreased and oiled with Aero Shell® Fluid 12 for maximum smoothness and long life. The bearings used in the tail stock have been specially selected to reduce lateral loads and maximize the slot car drivetrain efficiency.

miniPRO® Slot Car Ceramic Bearings

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Precise, otherwise known as "Repeatability"  is what you want in a dyno, that means test the same electric motor time after time and get the same results. Our dyno is capable of repeatable test results using the Throttle Controller Board (Sold Separately). 

miniPRO® Slot Dyno Precise Test Results Graph

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miniPRO® Slot Dyno Windows Application Print Screen


  • Real-Time Data Display and Plotting
  • Multiple Charts Library
  • Unit Systems: English & Metric
  • Multiple Runs on the Same Screen Graph
  • Summary Information Screen for Quick Results and Analysis
  • Graphical Gauge Setup Options
  • Graph Curves Settings
  • Logging Data
  • Edit Data Live without Using 3rd Party Software such as Excel
  • Save/Load Previous Runs, including the Graphs
  • Print Test Results 


  • Slot dyno unit
  • Dyno electronic board with latest firmware
  • Latest software & serial key
  • USB Cables

Note: ESC and Throttle Controller are sold separately. You need to use a power supply or battery to power the dyno. 


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