It coulda been. Really there's not too many variables to screw with, when it comes to ashtabula cranks, aside from crank arm length, and sometimes arm diameter, as kids bikes generally have smaller cranks, I mean the 16, and 12 bikes, most bmx, mtb, and cruiser use the same diameter crank, but often have different arm lengths for different BB hieghts. Mtbs usually have the biggest chainrings, especially if it's a double for some reason.