Hey everyone Thanks again for all your wisdom and help around my issue. We didn't get any snow last night, just rain so not a lot to test with before I took off for the airport. As mentioned I'm not feeling any binds in the drive train and the only thing I can't rule put is a bind that could occur under heavy load. I didn't see any big spikes in the axe logs last night but then again I wasn't able to find a lot of snow to throw. To be honest in the past I could have overheated the first motor as we had a couple big falls (16+ inches) where I had to clear and extricate a couple cars stuck with the pig. I suspect I could have weakened a spring which started it's demise to heat failure. Once one brush loosens up the heat will start to escalate quickly. I saw the same issue when installed the blower motor in the outboard last summer, a terminal wasn't tight enough, it got hot and the heat transfered to the brush holder directly attached. I had thermal monitoring on that motor so I saw the temperature spike when the brush lost contact. What remains now is if the heat will return as the now rebuilt first motor isn't showing any heat issues yet. If the heat doesn't return on the next snow I think I can rule out that my second motor had some kind of issue as the last couple storms were under 6 inches each it saw. That brush holder that was ripped out of the fiberglass like holder is something I haven't seen before although I don't have a ton of motor experience but looks very odd.
Thanks again Dan > This leads me to think that there is a new problem with >> the drive function, creating a large amount of drag. >> > That was my thought too. But he says he can't find anything binding in the > shop. > What if the original motor's brush advance was set correctly, but the new motors are not? A quick test: Run the motor on 12v in both direction. Note the speed, and current it draws. If the speed and current are the same, then the brushes are set at NEUTRAL timing. If one direction is faster and draws less current, then the brushes are timed to run in that direction. How *much* brush advance you need depends on the application. -- Anyone can make the simple complicated. Creativity is making the complicated simple. -- Charles Mingus -- Lee Hart, 814 8th Ave N, Sartell MN 56377, [email protected] _______________________________________________ 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/20150222/1ace3b2a/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)
