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Weakened field = more armature current. More
armature current = more heat. Everything that was there when the motor
was new has to be there as far as the field is concerned.Chips on the
field faces and missing chunks disrupt the magnetic field,resulting in
poor performance. They can be changed, but getting the donor out of the shell in one piece can be problematic.And the placement of the magnet in the recipient shell has to be right on the money or else performance will suffer. And watch those FINGERS ! RJ Neil Dennis wrote: Just had the magnet in a mower motor lose a piece, I've got another shell with one good magnet, wonder if anyone has changed one out and if so how ? |