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EFR 7163 - put to the test

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    EFR 7163 - put to the test

    https://www.youtube.com/watch?v=9tpqrXOzAyca

    just something interesting to watch


    #2
    I love EFR's (had 3) but total weight is only 1/2 of the equation. How far that weight is away from the center of rotation is where is really counts.

    The turbine material is nice and light. 1/2 the weight of inconel for sure, but you need more of it to get the same strength, which is why the turbines have thicker profile blades and a "full back" to the wheel.

    The EFR's also have quite large turbine wheels in comparison, which adds up exponentially. There is a LOT less material in the outer parts of the inconel wheels and they are smaller in O/D for the same power figure.

    Still great turbos tho, but interesting to think about all the pros and cons

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      #3
      Oh, and the 7163 is a mixed flow wheel also. the gas enters at 45 degrees to the exit instead of the usual 90... so it's kinda half axial flow

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