I am an active bicyclist during 5 years and ride a bicycle in any weather in summer and the winter . The idea of  AWD  bicycle occurred to me after a few fallings past  winter. I sat above pictures and drafts and as a result a bicycle (or motor cycle) turned out with two driving-wheels . I began to search analogues in libraries and in the Internet and only over the months found your site . Your  system of AWD  on 90% similar with my system of  AWD , therefore its principle of work I understand perfectly. In my system of AWD there are some distinctive features which allow constantly to pass a twisting moment on a front wheel without harm for the management,  that will allow to manage such motor cycle(or by a bicycle) to any user . The compactness of the system will allow to set it on any model of motor cycle and as a result safe ride on it. Are you interested by my ideas ?