The Tamiya Super Stock BZ motor is very brushed: The Sport-Tuned is a closed-endbell motor at 27T, while the Super Stock BZ is an open-endbell motor with 23T. Fewer turns means a more powerful motor, so a car equipped with a BZ will probably have a little more speed over one equipped with a Sport-Tuned, or at least greater acceleration. Is it worth the extra mo
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