Synchronic drive

A drive system altering a ratio between an input rotational speed and an output rotational speed, the drive system comprising:

• a rotatable input disc configured to receive an input rotational force and configured to rotate about a longitudinal axis;
• a rotatable output disc configured to rotate about the longitudinal axis, the output disc configured to provide an output rotational force;
• a drive core positioned between the input disc and the output disc to translate the input rotational force to the output rotational force, the drive core configured to rotate about the longitudinal axis and comprising at least one rotatable power disc, wherein each said at least one power disc is configured to:
• engage the input disc and the output disc, and
• rotate about a corresponding pivot axis, wherein a rotational plane of each of the at least one power disc intersects with the longitudinal axis;
• wherein as the input disc is rotated by the input rotational force, each of the at least one power disc engages the input disc causing rotation of each of the at least one power disc;
• wherein as the at least one power disc is rotated, each of the at least one power disc further engages the output disc causing rotation of the output disc;
• and
• wherein variations of driving features formed on an interior face of the input disc and of driving features formed on an interior face of the output disc alter a ratio of the input rotational force to the output rotational force.