On 30 Dec 2013 at 21:47, fotajoye wrote: > I converted a old Sears hydro garden tractor to electric using four 85 > amp [hour] deep cycle Pb batteries, a 48v 200 amp alltrax controller > and a 48 volt DC motor. I soon learned the mowing load on the > batteries was too high to use the cutting deck for mowing three acres > of tall pasture grass, or even 1/2 acre. What I really need is 16, 200 > amp [hour] LiFePo4 cells and an intelligent charger.
I'm no expert, but it seems to me that a more realistic approach would be to move your conversion parts into a more efficient tractor. I hear (right here ;-) that hydrostatic drives are painfully inefficient. The old GE Elec-Trak tractors can usually mow a couple of acres on 6 golf car batteries, even when the batteries have a few seasons' worth of use. That's a benchmark of sorts, I'd say. 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 For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
