Major's suggestions are all pertinent. It seems strange that only one set are wearing fast and sparking more. Could this be inadequate spring pressure allowing intermittent contact and thus accelerated wear?
I will be chastised for saying this, but the only true solution is to get a brushless motor. I'm doing that this year, so we'll see how it goes... Good luck, Marcus On Wed, May 8, 2013 at 6:03 AM, Jeff Major <[email protected]> wrote: > Hi Mark, > > My first thought is damage or a discontinuity to the commutator surface. > This can be checked with a dial indicator. If found, lathe turning may be > needed. Also check for high mica. The other things to check are all > electrical connects and spring pressures. Make sure all brushes slide > smoothly in the respective holders. > > Jeff M. > > > > > ________________________________ > From: Mark Hanson <[email protected]> > To: "[email protected]" <[email protected]> > Sent: Wednesday, May 8, 2013 7:17 AM > Subject: [EVDL] Weird Rear Brush Sparking > > > Weird rear brush sparking. > > On my 9" Impulse Netgain series wound motor, the rear (towards the tail > shaft) brushes keep wearing down every 3K miles and sparking. has anyone > had a similar problem and know what the cure is? > > Best Regards, > mark E . Hanson > in Roanoke, VA > www.REEVA.info > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20130508/4002ccb6/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/20130508/dc572ab4/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) > > -- Marcus Reddish *North Valley Systems LLC* Stevensville, Montana 406-360-8628 northvalleyev.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20130508/d1a43f69/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)
