Dual motor Model 3 on a dyno

Discussion in 'Model 3' started by bwilson4web, Nov 7, 2019.

  1. bwilson4web

    bwilson4web Well-Known Member Subscriber

    Source: https://www.mountainpassperformance.com/tesla-performance-model-3-dyno-testing-at-various-soc/

    We finally got an AWD car on our dyno (thanks to our friend Shereef for lending us his P3D) and it was great to find that these cars will work with a Dynapack hub dyno without issue! After seeing the difference between the standard and long-range RWD Model 3, we were very interested to see how much power loss would occur relative to battery state of charge with the massive amount of power the P3D makes.

    Unfortunately, we quickly found out that the car exceeds the limits of our dyno! The front pods of our dyno are able to absorb 2000Nm of torque, and this is just below what the front motor of the P3D puts out. After maxing out the dyno and getting the red screen of death a few times, I had to carefully ramp the power in at the start of the pull until the front motor went into field weakening, at which point it was possible to see the full power output. So when you’re looking at these graphs below, understand that the torque below field weakening (where the torque is flat) would have been slightly higher – around 5% more. The peak power would have also been slightly higher, close to 5%.
    . . .

    Fascinating read, @Domenick. This would make a great news article.

    Bob Wilson

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