Power Test, LLC

EC Series

Eddy Current Chassis Dyno

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Power Test’s EC-Series eddy current dynamometer uses air-cooled eddy current load absorbers providing a heavy duty, cost-effective solution without needing to rely on water or a cooling system. In addition to air-cooled load absorbers, the EC-Series eddy current dynos feature a precision ground heavy duty steel frame, dynamically balanced rollers with proprietary traction sipes, and Power Test’s PowerNet CD computerized data acquisition system. The EC-Series eddy current dynamometers are available in both two-absorber, CF22EC-2, and four absorbers, CF22EC-4, configurations. Both configurations are available in standard, all left or right side absorber arrangements.

  • Lifetime Warranty guaranteeing the durability of your frames and rollers
  • Air-cooled eddy current load absorbers
  • 45″-60″ (1143-1524 mm) wheelbase accommodation
  • 20″ (508 mm) diameter, dynamically balanced rolls with proprietary siped traction grooves
  • Belted design provides full machine power to a single axle
  • Available in left or right side absorber configurations for retrofits.
  • Centralized lubrication manifold simplifies maintenance and requires no tools.
  • Pneumatically-actuated disc roll brakes.
  • Low annual operating costs
  • No expensive cooling system
  • No water quality control issues
  • No risk of flooding your dyno pit
  • Transportation
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Product Specifications


Horsepower CF22EC-4
622 HP | 45 MPH
720 HP | 60 MPH
800 HP | 90 MPH
Absorber Air-cooled eddy current load absorbers
Controls PowerNet CD data acquisition and control system
Ethernet-based communications between included
Windows-based PC and dynamometer controller
Wireless hand held controller
Roll Specs 20″ diameter, precision balanced rolls
Proprietary siped traction grooves
24″ roll spacing
36″ inner track width
108″ outer track width
Wheelbase 45″-60″ accommodation
Maximum Speed 90 mph (145 kph) continuous
120 mph (185 kph) intermittent
Axle Weight 30,000 lbs. (13,636 kg) maximum per axle
Frame Precision ground, heavy duty structural steel
Above ground installation kit available
Power 120 VAC single phase, 60 Hz, 15 Amps (controller)
230 VAC single phase, 60 Hz, 40 Amps (CF22EC-4)