Universal Rotational Stopper

The present universal fixture in general is a four bar mechanism and, more particularly, a slider crank mechanism. Out of the four bars, one of the bars is an existing member of the assembly, and by manufacturing the other three bars anyone can fit a Sunstar iBike electric motor to any type of bicycle frame. Appropriate tightening about the down-tube and chain stays is accomplished by bolting the nut bolt along the slider which results in securing the electric motor to any cross-sections and dimensions of down-tube and chain stays. Connecting link of appropriate length is used for different angles between down-tube and chain stays.