On Friday, June 19, 2015 at 4:01:50 PM UTC-7, wrote:
On Friday, June 19, 2015 at 12:19:59 AM UTC-4, wrote:
Just wanted to get back to the group about this AC motor that was running in reverse after being disassembled and then put back together. It turns out that reversing the brushes did indeed reverse the direction of the motor. We can't argue with success, but I still don't fully understand why this is so. Can anyone please explain this to me? Thanks, Lenny

I'm just curious, when this plate was moved did all the brushes rotate the same amount, or perhaps just two? Because if you think about that if they all moved the same as a group it doesn't make any sense. Lenny

I think it makes sense. The commutator selects a winding. The rotation of brushes determines
whether winding #1 puts a new rotor N pole CW of the stator's S pole, or winding #2
puts a new rotor N pole CCW of the stator's S pole