Hi All.
To put things into perspective. I didn't "set out" to make a generator. I just found these old motors and thought they would look like a nice scale generator to pair with some engines. There are a few small scale generator sets and kits available but not "medium" sized as I would class these. I saw a few ways to convert them to generators using permanent magnets and so set on this journey to see what, if anything, was possible. I tried the original windings with the PM rotor and that provided low out put. Then I tried with the dishwasher internals inside the old frame. Which is where I am still with no real usable output.
It was really a case of trying to make something that worked out of bits and pieces.
I have very little knowledge of generators and motors and have learned quite a bit so far so all is not wasted. What I have learned is that induction motors make poor generators without high RPM and/or excitation. Permanent magnet motors easily generate electricity but not necessarily useful power. The windings are fairly critical so "any old motor" won't necessarily be able to generate useful power. Maybe that's what Bluejets was alluding to in his post.
What I was hoping for Ken, was something that could perhaps charge a small battery that in turn would supply power for a couple of diodes plus the engine ignition. I imagine that is quite feasible if one used say a small starter generator from a lawnmower or similar, but unlikely from ad hoc 240volt motor similar to the one I was trying to use. Unless there is another way like re-connecting the 9 coils differently.
To put things into perspective. I didn't "set out" to make a generator. I just found these old motors and thought they would look like a nice scale generator to pair with some engines. There are a few small scale generator sets and kits available but not "medium" sized as I would class these. I saw a few ways to convert them to generators using permanent magnets and so set on this journey to see what, if anything, was possible. I tried the original windings with the PM rotor and that provided low out put. Then I tried with the dishwasher internals inside the old frame. Which is where I am still with no real usable output.
It was really a case of trying to make something that worked out of bits and pieces.
I have very little knowledge of generators and motors and have learned quite a bit so far so all is not wasted. What I have learned is that induction motors make poor generators without high RPM and/or excitation. Permanent magnet motors easily generate electricity but not necessarily useful power. The windings are fairly critical so "any old motor" won't necessarily be able to generate useful power. Maybe that's what Bluejets was alluding to in his post.
What I was hoping for Ken, was something that could perhaps charge a small battery that in turn would supply power for a couple of diodes plus the engine ignition. I imagine that is quite feasible if one used say a small starter generator from a lawnmower or similar, but unlikely from ad hoc 240volt motor similar to the one I was trying to use. Unless there is another way like re-connecting the 9 coils differently.
