Our new motor uses in-house made parts, with best materials.
With the help of magnetic simulation software we achieved best efficiency for this class.
We use high temperature magnets with 150 Degree Celsius limit.

Key points:


    • It can be used on electric airplanes, paraglide, large drones. It can be also used on cars or boats but with limited power, because of air not blowing on the windings.
    • Aviation grade Aluminum 7075
    • Dual winding for 120v and 240V (end user can change the coil connections).
    • Both delta and star connection possibility.
    • Large Koyo ball bearing for long life and stability.
    • High temperature high, coercively  magnets with 150 degree Celsius maximum
    • Triple coil insulation with lacquer impregnation and oven curing.
    • Motor voltage can be made in accordance with customer request.
    • 35 degree inclination spokes to push air into the coils.

Requests for quotations can be sent to iulian.berca@gmail.com.

Motor Specifications:

Power: 35Kw continuous, 60kw peak.
Nominal RPM: 2600.
Torque at 1200RPM 120Nm
Torque at 2670RPM 110Nm

Diameter 218mm
Total length: 80mm
Voltage 120 (parallel connection) or 240V series connection
Kv constant is 13 for 240v or 23 for 120v connection.
We can make any custom flange for the propeller or other mechanical connection.
Both bearings are whether sealed.
Bottom flange is 6xM6 on Ø82

Underneath you find the efficiency map of the motor.


Some pictures of the motor




  1. felix says:

    hi julian,
    just saw your 35kw motor. Again a great piece of work. congrats !!!
    Just one question: Which material type and thickness are you using for the stator laminations ?
    Is there any good material supplier in romania ? I can laser the stuff over here in germany…but transformer steel is hard to get over here for a prototype 🙂

    Thanks and greetings 🙂

  2. iulian berca says:

    In Romania there is a company who is making this laminations, and good grade.
    They only sell 1 Ton minimum.

  3. What is the weigth o this motor?
    What is the price?

  4. Leonb66 says:

    Price ?

  5. iulian 207 says:

    motor weights 12kg price is 1500euro per pcs.

  6. VIVEK says:

    Hi Iulian, I am working on developing light weight electric vehicle with in-wheel motors. I would like to know if you can provide us with an outrunner motor modified to our dimensions. please connect with us if this could be of interest to you.
    Thanks and Regards,

  7. Jelle says:

    Hello Iulian,

    congratulations on building such a massive BLDC motor. My fellows student and myself could only stare in awe at your work. I had some questions about the motor drivers, are you using the same drivers as you were using in previous projects or did you make adjustments in the schematics?

  8. Alessandro says:

    Hi, why 2000€ when from TPPower and Alibaba I can get the same Brushless motor lighter and cheaper? I’m fear about that what they say it’s false that their motor isn’t so good like they write. I’m waiting for an your answer to quiet me! I leave a link: https://m.alibaba.com/product/60661968596/Hot-Sale-MP202-80-KV28-Outrunner.html?spm=a2706.8291533.0.0.7268fdcdsjTGMo

    • Tom says:

      The link you provided deos not show Direct Drive BLDC motors

    • . says:

      MP202/80 KV28 outrunner brushless motor 40kw for electric paramotor and paraglider

      The spec as following:

      MOTOR: 202/80
      KV: 28
      MAX POWER: 40-45KW
      Continous power: 25kw
      MAX AMP: 200A
      MAX VOLT: 200V
      NO LOAD CURRENT(20v testing voltage): 2A
      RESISTANCE (mOhm): .35
      SIZE: 202x 80( without shaft )
      Stator/magnet: 36/40
      WEIGHT (kg):6.4
      SHAFT: 20mm hollow shaft
      Accessory pack: Yes
      Thurst: 90kg
      Torque: 85Nm maximum continual

      Other kv can be 28,50, 80 ect. For low kv, you had better chosen higher voltage.

  9. yusuf says:


    seems very efficient design.

    rotor back-iron looks like very thin, Does it saturate magnetically ?

    how do ypu prevent from saturation,


    • iulian207 says:

      Only looks, but is 6m thick where are the magnets, the bottom part is much thinner to reduce the weight.


  10. Adrian says:

    Hello Iulian,

    I am Working with the Caltech Formula SAE electric team on developing an AWD vehical with in hub motors, the power level would be lower, 35KW peak, 15KW continus, please let me know if you would be interested.

    Very Respectfully,
    Adrian Costantino

  11. RobertSum says:

    Младенцы часто плачут, но понять причину не всегда бывает просто. Сейчас врачи определяют, вызван ли плач болью, по гримасам на лицах детей. Но при использовании такого способа высока вероятность ошибки. Сотрудники Оксфордского университета разработали новый метод, пишет New Scientist, подробнее читайте на сайте ladyup.ru

  12. DonaldQuorn says:

    Каркасная конструкция имеет негативное свойство выводить тепло накопившееся внутри помещения на улицу. Чтоб избежать подобных теплопотерь, или значительно уменьшить их показатели, рекомендуется подобрать подходящий утеплитель для каркасного дома, подробнее читайте на сайте omontazhe.ru

  13. GeorgeSog says:

    Как туплекс, так и пробка обладают прекрасными параметрами, поэтому многие люди затрудняются с правильным выбором. Пробка является экологически чистой, однако опасается воздействия воды, подробнее читайте на сайте rempostroy.ru

  14. LarryIdeaf says:

    В первую очередь укладывается металлическая сетка, к которой будет прикреплен нагревательный элемент. Перед заливкой стяжки, необходимо четко спланировать положение кабеля и его муфт, выходов под подключение электросети, регулятор и термостат, подробнее читайте на сайте remstroitelstvo.ru

  15. Celso says:

    Hello Iulian,

    I am working with the electric team on developing UAV vehical with motors, the power level would be, 100KW peak, 50KW continuous, please let me know if you would be interested.

    Very Respectfully,

  16. Erick Robayo says:


    I need a generator of 50KW, how much is the cost?, what else I need to install an electric system in my home? I need run 30 computers that need 1.4 Kw each one. can you help me please?

  17. Lehel Szabo says:


    Se poate folosi ca si generator? (fara controller, doar cu diode legate la fire)

  18. minkee says:


    I’m having a project to make a electronic vehicle

    So I really enjoy your website that there are lots of useful data

    but I could not find any data about relationship between horse power, wiring and magnet

    I’m trying to make 4 in wheel motor that has 10Hp but I couldn’t find any formula

    Could you give me any tips for it?

  19. 이문락 says:

    나는 대한민국 경북 경주시에 있는 넥스텍주식회사 CEO moonrak Lee
    나는 새로운 풍력발전기를 개발하고자 한다. 그래서 당신이 개발한 제네레이터에 관심이많다. 필요한 자료를 보내줄수있는가?
    지금은 소형을 개발한다. 출력 3KW, 5KW. 10KW
    차후 중대형으로 개발하고저 한다. 35KW. 100KW, 500KW, 1000KW
    당신과 파터너가 되고 싶다.