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  1. #8
    There's a lot of good info here but possibly not so useful to someone without the technical background to follow the discussion!

    In short, I think that the answer to the original question is, yes, fixed pulleys with variable-speed motor is a practical proposition, but you need a VFD plus replacement 3-phase motor to do it. You can't make a simple single-phase motor into a variable speed motor just by feeding it from a VFD - unfortunately.

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