Chain drive can be up to 98.6% efficient, you'd have a hard time beating that. http://pages.jh.edu/~news_info/news/home99/aug99/bike.html http://pages.jh.edu/~

Chain drive can be up to 98.6% efficient, you'd have a hard time beating that. http://pages.jh.edu/~news_info/news/home99/aug99/bike.html http://pages.jh.edu/~news_info/news/home99/aug99/bike.html