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Alternative motor windings and drive schemes

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  • Originally posted by Clugh View Post
    Click image for larger version Name:	type42-1.jpg Views:	0 Size:	47.7 KB ID:	408013
    I'll also purchase the combove Kit from China Wind it and see how it works against a powercroco 4225 Maybe the German pilots can save a little coin.... people could just send me the kit to wind for them...




    Thank you
    Hubert
    And Ralph if you look at it it really isnt modeled after the pyro. All you have to do is look at the tooth tips. Apparently you don't know how much they influence torque production. Christian talks about tooth thickness but that is not the entire picture. The split tooth work done by the Asiatic engineer is proof. Clearly if the 10 pole wraps it wire around the split tooth more iron is not there yet the machine makes 3% more torque. Its like ive told you please by an inductance meter rotate the machine and look and your direct and quadrature axi inductances. Its there you will find the winner in torque production. Id also imagine a machine with thick tooths wound doesn't have good overspeed capability like an air core motor. There is a price to pay for everything you try to do to get more. Tooth tips have a major influence . I guess youre not aware of the asymmetric tooth tip work being examined today. I drew one up about 3 years ago and just chose not to show you because you hadn't even adopted a hybrid or a wind more than 2 layers so I figured you aren't ready for that yet. U can not assume anything based on brand or design. You must truly test it.

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    • Ich bin froh, dass es euren Freunden gefällt, aber für mich ist es ein völlig unausgerichteter Stapel. Sie sind einfach, aber es würde mir nicht gefallen. Deshalb werden meine Stapel professionell verbunden und meine Alpha-Iron-Kerne bestehen aus einem massiven, einteiligen, nicht leitenden Material.
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      • Determination of d and q reactances of permanent-magnet synchronous motors without measurements of the rotor position


        Juliette Soulard
        2000, IEEE Transactions on Industry Applications​

        Please help yourself Ralph and learn about the Quadrature and the Direct axis inductances. That will help to avoid posting nonsense on the German social media.

        Thank you
        Hubert

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        • If you understand anything about slot leakage and tooth tips you would know simply by design the HK all versions will have more iron loss than say an align or these newly available machines in China as it has thicker tooth tips hanging out in no mans land. If both machines use standard silicon steel at 200 micron laminations you have no superiority to "china iron" not to mention the Scorpion itself is China Iron with a German flag slapped on the side that's why they headquartered in HONG KONG!!!!



          No matter who you are supposed to be or any speed plane results you ever had it still works that way, so you really need to analyze your own scorpions versus worry about all the other manufactures products and their results.

          And that's real.....

          Thank you for your time and patience
          Hubert



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          • Its pretty but is it functional. You have alot of pretty motors that burn down and the plane goes to the ground. See all your repair post Ralph? Its not potted with anything so it will never run as cool as what we are doing here. The scorpion woulnd motors never touched Bert so do you think I'm concerned? I haven't seen any winds from the GSM we cant do so enjoy the motors and how "pretty" they look while they last. They dont stay pretty for long

            THAT PART!!!

            Click image for larger version  Name:	fully cured 3.png Views:	0 Size:	686.7 KB ID:	408080
            Plus were pretty and 10 times more functional on thermal conductivity homie. On the GSM you can wind trash and they still praise it.😏 It seems to feed your ego enough but its a false sense of success. I mean they. are happy with NMB and needing repairs every season. Go figure. Appearance has nothing to do with functionality. "Pretty" .un secured wires certainly aren't ideal for heavily .loaded motors since the wires flex at high amperages. Thats why they burn up.

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            • Click image for larger version  Name:	fetch?id=386419&d=1694637371.jpg Views:	0 Size:	72.3 KB ID:	408082
              Pretty and functional P800 potted in material that can withstand 180C BUT my pilots care less about the appearance. They want dependability.

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              • Click image for larger version  Name:	cobra53403.png Views:	0 Size:	479.5 KB ID:	408090

                Denk mal drüber nach, Baby. Du wirst mit 2 X 1,32 mm in irgendeiner YY-Konfiguration nicht die richtigen Kv für 100F wickeln. Aber du könntest vielleicht eine 4-Lagen-Serienmaschine mit ausreichend langen Spulen wickeln, um 100 Volt bei den richtigen Kv aufzunehmen und deinen Kupferquerschnitt beizubehalten. Es ist keine schwierige Wicklung. Wickle die ersten beiden Lagen in 1,32, vielleicht im DLRK EVO, damit die Sterne für das Delta an einer guten Stelle sind mit geometrisch gleichmäßigen Spulen. Dann wickelst du einen Sternmotor mit ungefähr der Hälfte der Windungen darauf und um 30 Grad verschoben, dann speisen die Enden des Sternmotors das Delta darunter. Du solltest es hübsch hinbekommen. Hol deinen Gerling raus und weck dann wieder echtes Interesse. Wo ist das Problem? Es wird die Leistung deines Rotors verbessern, ohne die Magnete zu verändern.
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                • Boho1Boho1
                  Today, 04:42 AM​

                  Hi Ralph its early here only 530 am and Im just waking up. Ill post some things that might interest people a little later. I know you will be tuned in....👀



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                  • Click image for larger version  Name:	Pyro 6.png Views:	0 Size:	932.1 KB ID:	408101
                    Bet you haven't seen a "pyro 600" quite like this.... I received this from one of the pilots. I didn't ask him anything about it. I'm winding it the same way as all the others a 5+5 YY.. The assembly is certainly more sophisticated and lends itself to rewinding and or repair like some people always need...



                    Thank you.
                    Hubert

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                    • Click image for larger version  Name:	knockoff.png Views:	0 Size:	592.0 KB ID:	408103
                      Its an American knockoff
                      actually built a little better

                      "'​​​​​​​pretty coils...."
                      Hubert

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                      • Comment


                        • Click image for larger version  Name:	locked in.png Views:	0 Size:	1.32 MB ID:	408107
                          Do you see how the bearings are locked in with the internal speed clip and that the other half of the bearing carrier screws into this locking the armature in place. That also adds to the axial load capability since a 3 bearing are axially tied together mechanically with the hardened steel sleeve.

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                          • Click image for larger version  Name:	locked in 2.png Views:	0 Size:	1.63 MB ID:	408109
                            Do you see what the Americans have done that's better? Its real not an insult.
                            A penny fits perfectly in the keyway and it is an American left hand thread.
                            You unscrew it and the stator is yours.

                            Tell me that isn't better!

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                            • They goto the same pilot and Ill finish them today. So of course Ill measure them both and run them both so we will see if its is a good copy.
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                              • Click image for larger version

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                                Hi,
                                I'm playing around with the 4130 20T Cobra today. I gave it a short run on a 17 x 8E APC on 8s lipo. On the Castle at 15 degrees static timing It swung the pro 11,224 rpm and draws 46 amperes there for 1461 watts. I'm going to rewind it.

                                Thank you for your time and patience
                                Hubert
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                                • Dang i almost 4 got Ralph. I have to put a deposit on my plane today. Click image for larger version

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                                  • Click image for larger version

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                                    Ich komme per Luftpost und habe vor, dich zu testen, Kumpel. Du suchst ein wettbewerbsfähiges Amerika. Du hast es gefunden. Ich werde auf dich aufpassen, Neffe. Das verspreche ich.

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                                    • The carbon X Printer also gets purchased this week boo. Its time.....


                                      Love
                                      Hubert

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                                      • Click image for larger version  Name:	fetch?id=386355&d=1694566679.jpg Views:	0 Size:	65.2 KB ID:	408126
                                        For F100 dont forget im suppose to beta test the Valenok which is a 96 volt agnostic inverter from ZUBAX robotics. This is the one that can learn the props load and optimize the commutation accordingly. the floating point SVC is shown to be about 15% more efficient than the typical FOC drive.. I also have the brians for the inverter in IC form less the bridge so I can look at designing a SiCFet or GaNfet drive that does the same thing agnostically. 2025 will be rough man. Woo....😳

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