chris2010 Posted January 5, 2015 Share Posted January 5, 2015 What would cause this motor to self destruct ? 12v system. Pulling a Landy up at slope, Motor slowed up and stopped A winch I bought of someone apparently it was a good one. Husky 8 winch Quote Link to comment Share on other sites More sharing options...
discomikey Posted January 5, 2015 Share Posted January 5, 2015 i cant see from the picture (im blind) but have some of the contacts come off the commutator? this would most definately cause it to stop working and more than likely jam it up too Quote Link to comment Share on other sites More sharing options...
chris2010 Posted January 5, 2015 Author Share Posted January 5, 2015 Yes they have I can see what's jammed it, But what causes this ? Guy I bought it of said it was a good motor, Winch always struggled. Used it about twice, never stalled the motor . Quote Link to comment Share on other sites More sharing options...
stuck Posted January 5, 2015 Share Posted January 5, 2015 If you don't get an answer tonight I will forward the picture to the DC motor specialist I use at work in the morning. We use lots of big (>200KW) DC motors but I've never seen a commutator fail like that. Quote Link to comment Share on other sites More sharing options...
chris2010 Posted January 5, 2015 Author Share Posted January 5, 2015 Thank you very much , Any help would be greatful. Quote Link to comment Share on other sites More sharing options...
Team Idris Posted January 6, 2015 Share Posted January 6, 2015 Exploding com is traditionally from over speeding. Maybe it had a brake fail at some time, starting a crack? Never seen it on a winch motor, so the fault could be specific to that motor? I'd say you were unlucky on that one. Quote Link to comment Share on other sites More sharing options...
discomikey Posted January 6, 2015 Share Posted January 6, 2015 it could always be down to poor workmanship of the original motor, especially if its not done that much work and always been slow Quote Link to comment Share on other sites More sharing options...
stuck Posted January 6, 2015 Share Posted January 6, 2015 This is the highly technical response from my DC motor specialist "Looks to me like carp down the slots which would eventually short bar to bar, a good rake out now and again needed" 1 Quote Link to comment Share on other sites More sharing options...
dirtydiesel Posted January 12, 2015 Share Posted January 12, 2015 Exploding com is traditionally from over speeding. Maybe it had a brake fail at some time, starting a crack? Never seen it on a winch motor, so the fault could be specific to that motor? I'd say you were unlucky on that one. Husky is on a worm and wheel, no brake to fail. Quote Link to comment Share on other sites More sharing options...
Team Idris Posted January 12, 2015 Share Posted January 12, 2015 Sounds fair. Dodgy commutator then. I'll retract the crack theory as well. I know things have a crack start leading to disaster, but I think a com would just pop if there was any weakness from speed. Even heat seems out. One wire looks darker, but the RH is nice shiny copper. Quote Link to comment Share on other sites More sharing options...
the real muddy90 Posted March 9, 2016 Share Posted March 9, 2016 I've blown a few motors competing. There's 2 reasons really. Over reving, which isn't going to happen on a husky! The other is heat! Working hard & long will make things hot, as will a battery that's a bit tired or flat. Motors don't like working with low volts. Cheap motors, even warn xp's use soldered comutators, the solder melts, end of motor. One main reason most challenge competitors use bow motors is that the coms are copper braised. Quote Link to comment Share on other sites More sharing options...
JST Posted March 11, 2016 Share Posted March 11, 2016 I've blown a few motors competing. There's 2 reasons really. Over reving, which isn't going to happen on a husky! The other is heat! Working hard & long will make things hot, as will a battery that's a bit tired or flat. Motors don't like working with low volts. Cheap motors, even warn xp's use soldered comutators, the solder melts, end of motor. One main reason most challenge competitors use bow motors is that the coms are copper braised. ^^^ what he said, overloaded i think Quote Link to comment Share on other sites More sharing options...
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