Yes I agree that on average over different vehicle types the drag force generally becomes larger than the rolling resistance force at around 45 mph. The Tesla S is interesting in this regard though since it has very low Cd and not that large of cross sectional area for such a massive vehicle. As a result the drag force doesn't become larger than the rolling resistance force until significantly higher speed.
The two forces are equal for my car at about 45 mph, drag force is about 50% larger at 55 mph, and about twice as large at about 65 mph. (Cd and rolling resistance estimates from roll down tests) -- View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/Re-EVLN-Open-Source-Street-Legal-affordable-long-range-EV-4the-masses-tp4675590p4675640.html Sent from the Electric Vehicle Discussion List mailing list archive at Nabble.com. _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
