I made a 90A single cell load resistor out of 20 ga resistance wire (search amazon for kanthal wire) and some half inch copper tube I had laying around. The pipe was turned into two rails maybe 24" long each and spaced about 6" apart. The resistance wire was then wrapped around from rail to rail maybe 20 times. I pinched the pipe flat at the ends and drilled holes for bolting cables from the cells to the load. Adding turns of resistance wire increases the current. Increasing the pipe spacing increases the length of wire between rails and will require more voltage to push the same amperage. There are web calculators out there for resistance wire if you want to crunch some numbers.
At a 6" spacing, a single cell pushes 3-4 amps per individual wire and the 20 ga wire is nowhere near red hot. I thought this might be better since the wire won't grow much and risk losing contact with the pipe. For 8V, maybe you'd need more spacing, more turns of smaller wire, or maybe just a box fan to keep the wire temp reasonable. Here's a picture. Not pretty, but cost under $10 since all I needed was the wire. http://i.imgur.com/Z6jbom8.jpg On Fri, Dec 23, 2016 at 11:04 AM, John Lussmyer via EV <[email protected]> wrote: > I'm planning on testing the capacity of some Leaf Modules I've picked up. > Any suggestions for a good 60A or so load for 8V? > > -- > Tigers prowl and Dragons soar in my dreams... > _______________________________________________ > 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/20161223/a733701f/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)
