zenith12
Active member
What would cause a motor to run nominal then in a few seconds it slows down and then back up to normal rpm I’m afraid that this might damage the motor so why would it do that and how do I fix it.
Hoover 450 motor problem
- Thread starter zenith12
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kirboover
Well-known member
Possible fix
I am not that good with motors, but is one or both of your carbon brushes stuck? In my experience, that can cause that kind of thing.
I am not that good with motors, but is one or both of your carbon brushes stuck? In my experience, that can cause that kind of thing.
real1shep
Well-known member
Assuming.....
something the motor is turning isn't the problem....brushes, commutator, commutator segments, armature windings etc.
Good YouTube vids on testing armatures.
I have a 1205 motor doing exactly this, but haven't gotten into it yet....pretty sure it has fresh brushes.
Kevin
something the motor is turning isn't the problem....brushes, commutator, commutator segments, armature windings etc.
Good YouTube vids on testing armatures.
I have a 1205 motor doing exactly this, but haven't gotten into it yet....pretty sure it has fresh brushes.
Kevin
madman
Well-known member
Check brushes, check all electrical connections. Quite possible one connection is going high resistance for a moment and gets jarred back into place.
