Finding the time it takes to reach 55 mph on paper. You have the horse power, torque, transmission gear ratios of 1-5, rpm range, drive ratio, and primary drive ratio, and weight. You know Velocity=[(RPM*tire radius*2pi)/(Drive ratio*Gear ratio*Primary drive ratio*60)] which is velocity in ft/s . What more must you do in order to find the time it takes to reach 55 mph/80 ft/s? Is there something else I can solve for to graph against velocity in order to find this time? This is a home project of mine.