There is a lot to understand and motors is only a bit of it, when we use brushed motors the number of times the wire is wound around the armiture and if that is one wire, two wires or three........tells us that the motor is - say a 12t (turn) double or a 27t single.
Just being a lower turn is not "better" but will/may provide more grunt/poke, this will not make the car easier to drive and may not effect the top speed. It will draw more from the batteries and require a speedo to suit. A Novak 5.5 is thought to equate to a 7 or 9 turn brushed, the main advantage is the motor requires little maintenance. Motors cost much the same to manufacture, labour costs/can/wire/markup etc.....
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