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I have a Gilbert 21801 Baldwin that is good to go except for one recurring issue - the right (i.e. engineer's) side brush will not stay soldered to its tab.  The left side is fine, but for some reason this right side gets enough heat and/or vibration to melt the solder and loosen the brush every time after about 10 minutes of continuous running.  I've checked the wiring, cleaned armature comms and gaps, there's free play and spinning of the armature, good 2-position reverse unit finger contact with internal rocker, but I can't rid this engine of this one annoying gremlin.  Do you have any suggestions?  Is there something I missed?  These engines aren't the greatest and often run hot, noisy, and sometimes cantankerous, but this one other than this recurring issue actually now runs pretty well.  Should I try a temperature resistant conductive silver epoxy like AA-DUCT 904 instead of solder on that brush?  Or Radio Shack Wire Glue - has anyone used that before?  Super glue does not work - tried reinforcing the solder with that around where the brush attaches to the tab, but it just fries away.  Thanks.

Last edited by Sgaugian
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OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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