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  1. Zdenek Hadrbolec

    3D cad design sequence

    Your idea is unnecessarily complicated. It's much easier. Personally, I proceed by first determining how big a propeller I want to use on the model. The diameter of the propeller defines for me the approximate power of the engine, these values have been known for a long time. The corresponding...
  2. Zdenek Hadrbolec

    Zdenek in the Czech Republic

    In the case of an electric motor, its performance is primarily defined by a unit called ampere-turn. For the flow of the necessary current, the correct cross-section of the conductor must be used. And it doesn't matter if it's one thick wire or the appropriate number of thin wires connected in...
  3. Zdenek Hadrbolec

    Zdenek in the Czech Republic

    Thanks friend. I use this. But I can't find it anymore because I don't know what it's called exactly. If anyone knows where to buy I would appreciate it!
  4. Zdenek Hadrbolec

    Zdenek in the Czech Republic

    Thanks friend. I use a Roland MDX40A and a China router 9060, but properly modified.
  5. Zdenek Hadrbolec

    Zdenek in the Czech Republic

    It's simple: one wire must have a diameter of 1.2 mm (cross section 1.13 mm2). Such a wire cannot be wrapped around a 4x4mm core. It is very thick and hard. Therefore, nine wires with a diameter of 0.4 mm are folded together. These easily adapt to sharp bends. At the ends, all the wires are...
  6. Zdenek Hadrbolec

    Zdenek in the Czech Republic

    I use this, but it's hard to find anymore. I don't know the correct name. Pilsen. :-)
  7. Zdenek Hadrbolec

    Zdenek in the Czech Republic

    I only lubricate with a mist, the front sometimes drips with oil. I have some endings like that, I don't like them very much. Are yours perfect, is that your work or can they be bought somewhere?
  8. Zdenek Hadrbolec

    Zdenek in the Czech Republic

    The coils are wound on a classic core made of silicon sheets. Always from nine wires with a diameter of 0.4 mm, five turns each. The motor is 36 poles with 42 magnets. Or maybe 72 poles/84 magnets, it doesn't matter... :-D
  9. Zdenek Hadrbolec

    Zdenek in the Czech Republic

    I understand and I have no doubt about it. I just wrote that cnc files are unnecessarily complicated for manual production. If someone wants to build my engine, we can somehow agree on the *.stl files.
  10. Zdenek Hadrbolec

    Zdenek in the Czech Republic

    I understand your disappointment my friend. But consider: the motor is designed directly for cnc production. Many of its parts cannot be produced by conventional machining. Therefore, I do not think that the plans are of any value. It would probably just be a lot of extra work. But why not...
  11. Zdenek Hadrbolec

    Zdenek in the Czech Republic

    Thanks! I have no plans. The engine is designed in a 3D program and the individual components are directly converted for the cnc milling machine.
  12. Zdenek Hadrbolec

    Zdenek in the Czech Republic

    It is not cast. It is milled from two halves and then welded. Finished with a jet finish.
  13. Zdenek Hadrbolec

    Zdenek in the Czech Republic

    not yet, it's not resolved how to avoid the controller, it's a BLDC motor.
  14. Zdenek Hadrbolec

    Zdenek in the Czech Republic

    Yes, this is it.
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