My Dad bought a used trailer from one of his friends in 1955 which clamped to the back bumper in two locations and had a "CASTOR" type wheel on a 360 degree swivel, It worked fine. And so many drivers cannot back up a trailer because they have never learned the skill. By the way a longer trailer is easier to back up. And the hitch is 5 ft from the trailer body so when you "Jack-Knife" you don't hit the trailer body with the back of the towing vehicle. Larry, just put a battery pack in the trailer and a motor on the wheel, a simple relay to turn the motor on and as your EV becomes discharged; (With a 20 ft long wire and a small switch to control the relay and an indicator for state of charge on the remote control box you put in the EV), switch the trailer on! Push your EV with the range extender trailer and use regenerative braking of your EV to charge your EV Pack. No modification to the EV required! Use a J1772 connection to recharge the trailer when convenient.
*Dennis Lee Miles * *E.V.T.I. Inc.* *E-Mail:* *evprofes...@evprofessor.com* <evprofes...@evprofessor.com> *Phone #* *(863) 944-9913* Dade City, Florida 33523 On Wed, Jul 9, 2014 at 2:27 PM, Larry Gales via EV <ev@lists.evdl.org> wrote: > Trailer type range extenders, either battery or gasoline powered, always > seem to use standard type trailers, where the trailer hitch allows for both > vertical and side-to-side motion, and where the hitch is almost as long as > the trailer itself. This considerably increases the total length of a > vehicle, and makes it very difficult to back up. > > I wonder if a simpler design would work instead: a very short hitch which > allows some up-and-down flexibility, but no side-to-side motion, and where > the trailer itself rides on a single swivel wheel. This would > significantly reduce the length of the trailer+hitch combination, and > should eliminate the problem of backing up. > > Also, I saw that the BMW i3 has an optional 700 cc gasoline generator to > extend the range of the vehicle. I have been unable to find the size and > weight of such as engine+generator combination, so let me know if you have > that information:. > > Thanks in advance, > > -- > Larry Gales > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140709/929446c9/attachment.htm > > > _______________________________________________ > 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) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140709/97d4f94c/attachment.htm> _______________________________________________ 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)
