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Return to: General Discussion - Dynamos, Generators, Alternato... |
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#Post#: 70402-------------------------------------------------- |
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Mamod Minor generator |
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By: Mamod milo Date: May 20, 2025, 4:08 pm |
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Hi, |
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I have recently been working on a Mamod Minor dynamo/generator |
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project. It uses a Tony Green 9 volt dynamo wired to a 2.5 volt |
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incandescent bulb. It seems to light the bulb well & the voltage |
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reading is about 2.5 volts. |
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I would like to get closer to the dynamo's rated capacity, and |
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the obvious way to do this is to use a larger diameter pulley on |
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the engine rather than the standard small diameter pulley that |
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they all come with - to gear up the speed of the dynamo |
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rotation. However, I am struggling to find any |
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Mamod/Wilesco/anything else large grooved flywheels, as in use |
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say on the Mamod SP2D or SP5D. Does any one know a source for |
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this? |
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Thank you |
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Milo |
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#Post#: 70403-------------------------------------------------- |
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Re: Mamod Minor generator |
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By: Mamod milo Date: May 20, 2025, 4:12 pm |
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Like the flywheel on this SP5D: |
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#Post#: 70435-------------------------------------------------- |
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Re: Mamod Minor generator |
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By: pwalchak Date: May 22, 2025, 6:39 pm |
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I haven't done so yet, but I'm intending this Summer to do just |
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that, by mounting the flywheel on a lathe and cut a groove using |
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a cutting tool with a pointed replaceable insert. Another way |
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would be to use a flat belt like we see on prototype steam |
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tractors. I've seen YouTube videos of other modelers using this |
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method. |
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Paul |
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#Post#: 70436-------------------------------------------------- |
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Re: Mamod Minor generator |
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By: pwalchak Date: May 22, 2025, 7:24 pm |
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Here's a source of flat belts: |
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https://pmmodelengines.com/belting/ |
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And here's a video on how to make your own: |
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https://www.youtube.com/watch?v=ds8un0NGrPw |
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Paul |
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