A method for fabricating a split path transmission system that achieves equal torque splitting between the forward and aft split load paths of each gear train thereof at a predefined operating point by providing an intentional timing difference between gears and pinions of the forward and aft...http://www.google.com.au/patents/US5813292?utm_source=gb-gplus-sharePatent US5813292 - Method for fabricating a split path transmission system providing equal torque splitting between the split load paths of each gear train thereof at a predefined operating point 
