Weight is NOT a dominant factor. Air resistance trumps it by at least an order of magnitude. Combined rolling resistance is dependent on contact patch size which is why semis are pumped to 100psi. With good active suspension you can have high inflation pressure tires and not compromise ride quality or rolling resistance.
People always think RR is big deal because if you keep the pressure up it becomes a big deal. On May 3, 2016 3:45 PM, "EVDL Administrator via EV" <[email protected]> wrote: > On 3 May 2016 at 8:53, tomw via EV wrote: > > > The S uses quite a bit more power on accessories than most conversions, > > and most drivers likely usually have climate control on. > > But that wouldn't affect EPA range ratings, would it? Aren't those > measured > with aircon and other stuff turned off? > > Or is it burning off energy on accessories that CAN'T be turned off? That > would kind of stink. :-( > > > It also has a very low drag coefficient, so low that it has the same > > CdA as my little Suzuki Swift. That, and its 4700+ lb weight results in > > its drag and rolling resistance forces being equal at around 60-65 mph > > compared to around 45 mph for most vehicles. > > Yeah, I'd forgotten, it's (please forgive me) an obscenely heavy car. > > So friction losses are dominant. Hmm. > > > The energy/mile used moving at ~ constant speed in city driving would > > have to be low enough relative to highway driving to compensate for > > that energy lost during each acceleration, and that will depend on > > distance driven between stop/starts. > > Here again, the EPA method enforces a formula. So I wouldn't think this > would affect Teslas more than other EVs. > > What is incontestable is that the Leaf's city range is greater than its > highway range, but the Tesla's city range is SHORTER. It's hard to avoid > the notion that a Tesla acts more like an ICEV than other EVs do, wasting a > significant amount of energy "idling." Ouch. > > David Roden - Akron, Ohio, USA > EVDL Administrator > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > EVDL Information: http://www.evdl.org/help/ > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > Note: mail sent to "evpost" and "etpost" addresses will not > reach me. To send a private message, please obtain my > email address from the webpage http://www.evdl.org/help/ . > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160504/28e793a8/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
