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Question Possible to add motors to 2DOF for better performance?

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Map63Vette, Jan 13, 2021 at 15:51.

  1. Map63Vette

    Map63Vette Member

    May 19, 2016
    Mechanical Engineer
    Lawrence, KS
    +9 / 0 / -0
    This is more of a thinking out loud question, but I've been trying to design a DOF Reality style motion sim clone with my own motors and JRKs instead of the Arduino setup. I like the idea of the DOF Reality H3, but I already have a box of strong wiper motors, I prefer the idea of JRKs over the Arduino setup, and I have all the tools needed to be able to make one myself and tweak the dimensions to be exactly what I'd like and save money in the process.

    All that said, I know wiper motors aren't necessarily as good as some of the nicer gearbox motors out there. That got me thinking, if I wasn't happy with the performance of my rig after I built it, is there any reason I couldn't add a second set of motors on the opposite side of the pivot? I would basically invert all the logic for the rear motor set, but it seems like that could get me more performance using parts I already have access to. I realize that means 2 more motor controllers and more power supply, but since I already have the motors that's a fair chunk of money I don't have to worry about. Just wondering if anyone had ever tried a 4 motor 2 DOF system.

    I could see it still being cheaper to just buy larger motors, but just thought this was an interesting idea and wondered if anyone else had ever considered it.
  2. Ads Master

    Ads Master

    +0 / 0 / -0
  3. MarkusB

    MarkusB Active Member Gold Contributor

    Jun 30, 2015
    +503 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, Motion platform
    I read the same question a while ago (see here).

    I still think that this will not work, because you will not be able to exactly synchronize the movements of the motors on both side of the pivot. And this in turn will cause the motors to work against each other.
    • Agree Agree x 2