1. For downloading SimTools plugins you need a Download Package. Get it with virtual coins that you receive for forum activity or Buy Download Package - We have a zero Spam tolerance so read our forum rules first.

    Buy Now a Download Plan!
  2. Do not try to cheat our system and do not post an unnecessary amount of useless posts only to earn credits here. We have a zero spam tolerance policy and this will cause a ban of your user account. Otherwise we wish you a pleasant stay here! Read the forum rules
  3. We have a few rules which you need to read and accept before posting anything here! Following these rules will keep the forum clean and your stay pleasant. Do not follow these rules can lead to permanent exclusion from this website: Read the forum rules.
    Are you a company? Read our company rules

Question Belt tensioning system. 1.5-2Nm. I need help picking parts.

Discussion in 'Ready, set, go - Start your engines' started by Supersausage3, Sep 8, 2021.

  1. Supersausage3

    Supersausage3 New Member

    Joined:
    Sep 8, 2021
    Messages:
    1
    Balance:
    27Coins
    Ratings:
    +0 / 0 / -0
    Here is the project concept: https://imgur.com/a/c7nb6YW [​IMG]

    So, here goes. I am building a belt tensioner and need roughly 1.5-2Nm of torque.
    I am confused as to what motor i should get, what electronics and which programs.

    Ive been looking at stepper motors, but seems like they need encoders and some stuff. The plan is to have wheel-like FFB on a seat belt tensioner. So, the harder i brake in the sim the harder the belt pulls.
    I have no idea how to approach it so im gonna be watching plenty of vids and reading lots but i would appreciate if someone could guide me in the right direction.

    First i need to get the correct hardware, and thats where im stuck.

    Thanks in advance
  2. Ads Master

    Ads Master

    Balance:
    Coins
    Ratings:
    +0 / 0 / -0
  3. Gadget999

    Gadget999 Well-Known Member

    Joined:
    Dec 27, 2015
    Messages:
    1,461
    Location:
    London
    Balance:
    9,271Coins
    Ratings:
    +345 / 8 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino, 6DOF
    use a dc brushed gear motor and a H Bridge dc controller

    be careful - there may be enough force to hurt somebody !
  4. RacingMat

    RacingMat Well-Known Member Gold Contributor

    Joined:
    Feb 22, 2013
    Messages:
    2,226
    Location:
    Marseille - FRANCE
    Balance:
    20,305Coins
    Ratings:
    +2,068 / 21 / -2
    My Motion Simulator:
    2DOF, DC motor, Arduino
    you should include in your design if the system is reversible or not
  5. cfischer

    cfischer Active Member Gold Contributor

    Joined:
    Sep 7, 2015
    Messages:
    294
    Location:
    Colorado
    Balance:
    2,064Coins
    Ratings:
    +204 / 0 / -0
    In my experience, a 4 way belt tensioner is preferred, IE all belts of a 4 belt harness are pulled at the same time for breaking.
    I accomplish this with a setup like you have plus 4 bowden cables (bike brake cables). One motor pull all 4 cables.
    The motor runs in position mode. I used a load cell to measure how much braking force I like on each belt and it came to about 60lbs each. Thats a lot of force, it takes your breath away.
    The motor I use is an aasd15a and 80st servo motor with a ball screw. This motor is overkill but the family of servo motors are really nice. I would probably buy a 60st servo for this if I was buying new. The added bonus of this config is that I can place the motor and ballscrew off the motion rig. This saves weight the system has to move.

    Once you tighten up the belt against your body the sim will pull a certain distance which translates to a certain pressure. If you want more pressure you can tighten the belts tighter when at rest.
    • Like Like x 2
  6. kennyP

    kennyP New Member Gold Contributor

    Joined:
    Sep 21, 2021
    Messages:
    1
    Balance:
    - 23Coins
    Ratings:
    +0 / 0 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, AC motor, SCN6, Arduino, Motion platform, 4DOF
    Hi all =) Could a tensioner be made easier using an SCN 5? I have a few spare and was thinking of going that route rather than servo motor
  7. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    17,543
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    126,408Coins
    Ratings:
    +9,886 / 47 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    No reason you couldn't use SCNs if you have them, just be mindful of the force they can apply and safety related factors.