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Thread: Brushless motor for feather spinner?

  1. #1

  2. #2
    Brushless can be pretty cheap tough.

    The motor used in Valkiri 2 and 3, aswell in Surveyor and DX11 was the £40 540 gram Hobbyking NTM5060 combined with the £30 Hobbyking SS190-200 ESC.

    I don't think anybody will call Valkiri3 underpowered in the weapon.

  3. #3
    Feather spinners are very common, you just don't get to see them at the HW live events, but I can assure you there are more than you think :-)

    Sadly the NTM 5060 that Maddox uses is no longer for sale. However you can get the NTM 4258, and that would be more than enough to spin a 2kg weapon on a 4:1 ratio, maybe even 3:1. Use the same ESC and you are off. (Just be careful!)

    I personally use a Scorpion HK 5020, cos I am crazy, and my Dad's machine has a Scorpion 4035! But you will find many motors that deliver around 2000-3000W in use.

  4. #4

  5. #5
    I use a scorpion 4020 in my featherweight, its quite a bit less powerful than Alex's motors but it runs off 6S so I can use one battery to power the weapon and the drive, while Alex has multiple batteries to give the drive and weapon their rated voltage.

  6. #6
    Quote Originally Posted by Eventorizon View Post
    However you can get the NTM 4258, and that would be more than enough to spin a 2kg weapon on a 4:1 ratio, maybe even 3:1. Use the same ESC and you are off. (Just be careful!)
    I just looked on the Hobbyking website, it says the NTM series is an outrunner. Does that make secure mounting difficult?

  7. #7
    Not for me. The front plate has 4 M4 mounting holes.

    I reïnforced those with Helicoils.

  8. #8
    One other thing I was interested in finding out. Assuming the weapon weighs around 2kg, what would be a good outer rim speed? I'm wondering what the lower limit would be, since gear ratio and weapon diameter would affect it significantly.

  9. #9
    It really depends on the diameter of the weapon. For a drum that might be 100 to 150 mm, a typical speed would be 6,000 to 8,000 RPM (double that if you are Alex). A large diameter horizontal bar might only be 3,000 RPM and still do plenty of damage.

  10. #10
    Ok. As for the motor, do you think this would suffice? https://hobbyking.com/en_us/turnigy-...ner-motor.html

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