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///Dynostar Model 4T

Dynostar Model 4T

Product information 

The Dynostar Model 4T is a unique roller chassis dynamometer suitable for testing no less than three different types of vehicle: carts, ATV’s and motorbikes. 

The Dynostar Model 4T is fitted with a roller with a high mass inertia. This makes the dynamometer suitable for dynamic power up to 440 kW. 

The powerful air-cooled retarder can absorb power up to 355 kW (with cold eddy current brake). To save space, the eddy current brake of the Dynostar Model 4T is integrated in the roller. To cool the eddy current brake, Dynostar has applied the principle of forced cooling. A centrifugal fan presses air through the heart of the roller, so that the retarder is force-cooled. 

On the Dynostar Model 4T, the roller-brake combination is again mounted on one shaft, which results in a dynamometer which is totally free from vibrations, as expected from other Dynostar dynamometers. 

Also, all Dynostar Model 4T dynamometers are fitted with electrically adjustable wheel clamps. The wheel clamps are designed to make sure even wide quad tires can be clamped firmly without any problems.

  • DAS Data Acquisition System
  • Advanced Dyno Station Software package
  • Junction Box
  • 37-pin cable (length 7 m)
  • RS232 cable (length 3 m)
  • Calibration weight
  • Remote control (length 2.5 m)
  • Straps (2 pcs)
  • Instructions
  • CE marking
  • Emergency brake
  • EMC filter

Standard software features:

  • Static power measurement
  • Dynamic power measurement: Roll on, Negative test, All gear, Variable transmission, 
    Fast acceleration, Multiple speed
  • Acceleration test
  • Speedometer test
  • Weather station
  • Power correction to DIN, EEC and SAE standard
  • Automatic braking after completing dynamic test
  • Real time display of engine speed, power, traction and vehicle speed in software
  • Simulation of roller and air resistances for simulating situations on the road
  • Automatic calculation of losses in the drive line and calculation of power at crankshaft


Weight: 650 [kg] 1433 [lbs]
Dimensions (lxwxh): 2,40 x 1,63 x 0,92 [m] 94,5 x 64,2 x 36,2 [inch]
Power requirements: 230 [V] 110 [V]
Air requirements: 3,5 [bar] 3,5 [bar]
Max. speed: 325 [kmh] 202 [mph]
Drum width: 1,35 [m] 53,1 [inch]
Drum diameter: 0,52 [m] 20,4 [inch]
Total mass inertia: 17,21 [kg/m²]  
Equivalent vehicle mass: 257 [kg] 566 [lbs]
Max. dynamic power: 440 [kW] 587 [Hp]
Max. static power cold: 355 [kW] 476 [Hp]
Max. static power continuous: 139 [kW] 186 [Hp]
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