the important thing to remember about DC motors when trying to run them as a generator, is what the working rpms of the particular motor are. eg my 12v dc air horn compressor is rated at about 2000rpm, totally useless for a wind turbine because theres no way Im gonna spin a 6ft blade at 2000rpm. Ideally you would use a low rpm motor <500rpm without a gearbox, it must be direct drive, the gearbox will add too much drag to make it a viable proposition for DIY use. So to answer your question, yes it will produce as a generator but at what revs, 1500rpm's? then the question becomes, what method are you going to use to spin it at its working revs?
Select as Best AnswerUndo Best Answer
Yes as long as it's a permanent magnet motor and you run it "backwards" it will produce usable electricity.
. Most DC motors can be used as generators.