Pusher trailers have some merit in low speed pedal assist applications (but not solar). Drag is not a concern below 20mph, they can really help move a touting load, and you can drop it for unloaded riding. But solar panels is just not a great idea for any vehicle. There is always some burdensome disadvantage. On Feb 17, 2016 1:26 PM, "Peter C. Thompson via EV" <[email protected]> wrote:
> The only reason for the range extender is to get your EV to a place that > it normally could not reach. I've seriously considered building one for > my 914, as my range is only 70 miles. Yes, the mileage is worse when > using the extender, that is to be expected. However, the range extender > is probably a better idea than using a pickup truck and trailer. > > YMMV. :) > > Cheers, Peter > > On 2/17/16 10:13 AM, Robert Bruninga via EV wrote: > > Just pulling my 4'x4' solar power trailer (about the smallest trailer > > there is) and only 10" high plus the wheels decreases my Prius mileage by > > 10 MPG at least. That is a 20% range reduction right there... > > > > Bob > > > > -----Original Message----- > > From: EV [mailto:[email protected]] On Behalf Of Bill Dube via > EV > > Sent: Wednesday, February 17, 2016 1:10 PM > > To: EVDL Administrator; Electric Vehicle Discussion List > > Subject: Re: [EVDL] Leaf range extender > > > > Trailer range extenders have the severe limitation of adding drag to the > > EV. The drag added by a trailer is quite significant and can negate a > > large fraction of the added kW-hrs of whatever you may be hauling with > the > > trailer. > > > > It tends to be a "two steps forward, one step back" type situation. > > The two additional wheels plus the aerodrag tend to be more than you > would > > initially think. In practice, I have found that pulling a small trailer > > will increase the W-hr per mile usage of an EV by as much as 50%. It is > an > > eye opener. > > > > If you think about it, hauling a trailer is a lot of like dragging half a > > car along behind you. > > > > Bill D. > > > > At 10:25 AM 2/17/2016, you wrote: > >> On 17 Feb 2016 at 16:36, Peri Hartman via EV wrote: > >> > >>> There have been a lot of past discussions on range > >> extending. Trailers, small > >>> onboard chargers, etc. In my opinion, they are rarely justified > >> > >> A battery trailer isn't exactly elegant, but it works. It lets you > >> have a small, light battery in your EV to handle your everyday needs, > >> but still have lots of range (only) when you need it. > >> > >> The big downside is that a trailer is a royal pain to back. It also > >> makes the car longer. Forget parallel parking. > >> > >> Team New England's Solectria Force ran a battery trailer for 3 years > >> (1999- > >> 2002) in the Tour de Sol. It got 156 miles on a charge, about 3-4 times > >> the typical range for a lead-battery Force. They had a total of about > > 26kWh. > >> > >> http://drmm.net/images/tne_super_force.png > >> > >> The battery trailer is a kid's sandbox on wheels! The shape not only > >> improved the aerodynamics, it also got a lot of smiles from onlookers. > >> > >> I wonder how a Leaf would fare with a scheme similar to the plug-in > >> Prius conversions of several years ago, where the aux battery is set up > >> to just keep charging the Leaf's onboard battery. > >> > >> David Roden - Akron, Ohio, USA > >> EVDL Administrator > > > > _______________________________________________ > > 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) > > _______________________________________________ > > 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) > > > > > > _______________________________________________ > 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/20160217/8b04074a/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)
