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  1. S

    Hybrid alternator as BLDC

    That's nice. If you have the means and the time, maybe you could help us learn more about them, i'd love to hear more about it
  2. S

    QSMOTOR + other brands' controllers?

    Hello everyone. I was looking at QSMOTOR's smaller and cheaper power units and found the QS90 1kW mid drive motor, small but probably capable of more like its bigger brothers QS138 70H/90H, but i was looking on the controllers they normally are sold with (Votol, Sabvoton, and YYK/YuyangKing)...
  3. S

    New BMW car's motors are BRUSHED

    Well, just like BMW, MAHLE and other companies are now doing this for EV purposes, people that do DIY projects with alternators already use this exact idea (AC power on the stator and DC through brushes for the rotor)
  4. S

    48v Starter / generator motors (BSG alternator)

    Hello wiredsim and fellow users. I saw this thread of yours about high voltage alternators/mild hybrid units, and i already saw some people using these big-power units: https://endless-sphere.com/forums/viewtopic.php?f=30&t=110673 and http://elmoto.net/showthread.php?t=2676 for a Gen2 GM...
  5. S

    KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah

    You need to calculate the speed using the diameter from the tire, not the wheel About the torque, 14T>46T is 1:3,28, so the jackshaft will give you ~3x more torque than you have at the moment
  6. S

    KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah

    Yep, you will need a jackshaft Your desired 14T>50T/14T>47T will have final ratio of 11.99:1 So with 4k RPM in the motor, the wheel RPM will be 333RPM, with 24inch tires (on 18inch wheels) will have 23,8MPH
  7. S

    Water cooled car alternator

    Or you can try a more easier solution, like the YT user Kouvpasir, that used a brushed controller and made it like a boost paddle for their kid's kart: ggnNzUkGSPI
  8. S

    Water cooled car alternator

    If you really want to connect the field weakening to the speed, one (more complicated but automated) idea is to: Get a PWM controller with a digital meter for duty cycle or a PWM controller with a dedicated potentiometer, a microcontroller (Arduino), a way to sense the alternator RPM, digital...
  9. S

    Water cooled car alternator

    Hey, how would i know the best position for the sensors inside the alternator?
  10. S

    Water cooled car alternator

    Hmm, that "cogging"/"locked rotor feeling" i already saw before. YT user Enrengineering suffered from the same condition until his chinese no-name motor controller broken So he tried a 3-part miniseries to get the correct placement for the hall sensors https://www.youtube.com/watch?v=vxB4py8-NN0...
  11. S

    KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah

    Wow, nice! Do you have videos running with it? At least spinning it on the controller Is the alternator coupled to hall or light sensors?
  12. S

    Water cooled car alternator

    I would also love to see a video of you showing the alternator starting up and revving
  13. S

    Water cooled car alternator

    That is an excellent news update, i always like to see alternator-powered builds going nicely But how much did it costed? (Controler+disk+sensors)
  14. S

    Water cooled car alternator

    Alright. From what i researched (not an expert, so bear with me please), light (the space between teeth on the disk) on the photosensor will give output 1, so the spaces are north poles. You need a cheaper phone with GPS and android, go to https://supermagnete.de and search for the Pole Detector...
  15. S

    Water cooled car alternator

    Do your alternator rotor have 12, 14, or 16 teeth?
  16. S

    Car alternator to PMAC?

    Also, Austiwawa's video talks about the 36 possible combinations of hall sensors and phases, did you tried all of those 36 and put it in an Excel spreadsheet?
  17. S

    Car alternator to PMAC?

    Well, i tried to search for hall sensor problems, maybe you could search on RC filters for the signal https://electronics.stackexchange.com/questions/419166/3-phase-bldc-hall-sensor-problem
  18. S

    Car alternator to PMAC?

    I am in no means an expert in magnetic fields, oscilliscope uses and other stuff. But i wonder if you're feeding the rotor backwards. One of the alternators OP showed us had ferrite magnets between the teeth, maybe with the reverse polarity on the field coil could be messing with the hall sensors
  19. S

    SecondLife EV Batteries: Trustful?

    Unfortunately they don't check with the same company, but thanks for answering anyway
  20. S

    SecondLife EV Batteries: Trustful?

    Hello, everyone, sorry if this isn't the correct place on the forum to ask, but i would like to know if someone here knows the british ebay store "SecondLife EV Batteries", i saw an ad about a 60kW motor for cheap, but i don't know if they are trustful or not since the motor is advertised as...
  21. S

    Car alternator to PMAC?

    Yeah, you NEED 3 sensors, and its better to keep them at the same level in the middle Check Austiwawa's Channel for a hall tester schematic, so that you will know if the sensors are working as they should, then after comparing your LED signals with his, then you can test on the controller
  22. S

    Car alternator to PMAC?

    Please check equations 3 and 4 on the page, they will help with hall sensor position, but since the rotor poles are wedge/claw shaped, you need to put the sensors in the middle of the stator
  23. S

    Car alternator to PMAC?

    This watercooled 190Amp alternator is similar to the ones i mentioned, still an alternator but with small magnets between the claw poles. If you really want a "full" PM rotor, check the Chris workshop video
  24. S

    Car alternator to PMAC?

    I don't remember seeing people here with PM alternators, only some users on YT, like Chris workshop, Austiwawa, and others Please check them for ideas
  25. S

    Buick Lacrosse e-assist moto-alternator

    The problem with the Gen1 versus Gen2 is: Gen1 is still a claw-pole alternator with a wound rotor and a brush/slip ring assembly for feeding power to the rotor, and subject to the same efficiency problems as the standard alternators that people usually get 1500W controllers, and the maximum that...
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