If you wanted to synchronize the motion of two parallel output shafts that are being driven independently, this would be one mechanical arrangement that would g

If you wanted to synchronize the motion of two parallel output shafts that are being driven independently, this would be one mechanical arrangement that would get the job done. The two parts that engage in this configuration would be called gears. (most likely they would use sprockets and a timing chain...can't wait till someone finds that in nature)