A rider on a non streamlined bicycle, will use 90 percent of his power to maintain about 15 mph plus speeds[all of which is to overcome air resistance]We all have seen what a streamlined recumbent bike is capable of, 80 plus mph !!!.Weight doesn't seem to have as much of a effect at cruise speeds as the air itself has,Allert Jacobs partially streamlined Honda Innova 125 cc weighted 43 percent or 88 lbs more with the body and hardware components he added,but he still was able to almost double his fuel mileage,so it looks like air is the real enemy ,if you can cut a nice clean hole in it and fill that hole back up,with nice and clean air,you can go really fast and really far.
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