User’s Manual for Advanced Axial Flux Synchronous Motors and Generators
www.emrax.com Version 4.5 / January 2017 55
1.) If you use the transmission gear then one EMRAX 208 gives enough power:
1900 Nm peak / 900 Nm continuous in the first gear.
2.) EMRAX 228 mounted in the TG is better option. You can expect much better EV acceleration, also you will be
able to drive up the hill at higher gear:
3800 Nm peak / 1900 Nm continuous in the first gear .
3.) EMRAX 228 is useable for lighter EV if mounted directly on the differential:
nearly 1000 Nm peak / 500 Nm continuous on the wheels at full range of motor RPM.
4.) EMRAX 268 is useable for heavier vehicles if mounted directly on the differential:
approximately 1600 Nm peak / 800 Nm continuous on the wheels at full range of motor RPM.
5.) If EMRAX 268 is mounted in the TG, than you can expect very high torque:
6000 Nm peak / 3000 Nm continuous on the wheels at full range of motor RPM.
You can also use EMRAX TWIN (torque/power is doubled). Peak torque means that the power lasts 1-2
minutes.
Example of calculation for electric Audi ETT:
Acceleration:
Maximal torque on the front wheels:
Force that is needed for this torque:
Acceleration is:
Acceleration time from 0 to 100 km/h (=27, 77 m/s):
Final EV speed:
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