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Worm Gear Box Ratio & Brushless motor

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Adam Zimmerman, Jan 9, 2022.

  1. Adam Zimmerman

    Adam Zimmerman New Member

    Joined:
    Jan 9, 2022
    Messages:
    1
    Balance:
    18Coins
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    +0 / 0 / -0
    My Motion Simulator:
    3DOF
    Question about Sunrise Motor. I have spoke with them and they sent me a spec sheets on the motors they offer for sim racing. The only difference is the worm gear box that they come with. I see they have a 25:1 and a 60:1 gear ratio. Curious if there are any positives and negatives between the two and which one I should chose.

    Also, I am just curious why all sim racing rigs are using permanent brush motors vs using brushless? At least for what I have seen so far.
    Adam Zimmerman, Jan 9, 2022
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
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    20,549
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    145,112Coins
    Ratings:
    +10,778 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    What motor you choose is greatly influence by design and desired performance parameters.

    Motion Visualizer and SimCalc, in the FAQ Design section of the FAQs, can help get your head around the trade offs in design Vs physics

    Basically a 25:1 suits a design with large inherent design properties, such as a shoulder or foot mount design, while 60:1s suit a compact design, like my rig, where torque is very important.
    • Like Like x 1
    noorbeast, Jan 10, 2022
    #2