Hi I bought 9-18V range DC motor ---> this one http://www.amazon.co.uk/Super-Speed-9-18VDC-Hobby-Motor/dp/B0014BT0C8 and I'm trying to find out the moment of inertial of the rotor (J), damping ratio of the mechanical system (b), electromotive force constant (K=Ke=Kt), electric resistance (R), and…

question and need help on 9-18V DC motor

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