1. Do not share user accounts! Any account that is shared by another person will be blocked and closed. This means: we will close not only the account that is shared, but also the main account of the user who uses another person's account. We have the ability to detect account sharing, so please do not try to cheat the system. This action will take place on 04/18/2023. Read all forum rules.
    Dismiss Notice
  2. 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!
  3. 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
  4. 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 SCN5 2dof seat mover questions

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Tonantsa, Sep 4, 2018.

  1. Tonantsa

    Tonantsa New Member

    Joined:
    May 19, 2015
    Messages:
    20
    Location:
    Finland
    Balance:
    81Coins
    Ratings:
    +1 / 0 / -0
    My Motion Simulator:
    SCN5
    Hi,

    Just finished this build and everything seems to work just fine :)
    Few questions:

    About axis assignments:

    -sway and surge are the only ones needed with 2dof?

    About noise:

    -Are the dampers necessary with SCNs?

    -this thing seems to make significant vibration. It is located at 2nd floor and wife says the whole house seems to collapse at 1st floor :cool:. What would be the best way to isolate this from floor?
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    20,460
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    144,596Coins
    Ratings:
    +10,741 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Even on a 2dof you can use sway, heave, surge, roll and pitch, see here about how to build and refine a motion profile: https://www.xsimulator.net/community/faq/steps-to-create-a-motion-profile.228/

    Make sure each SCN5 axis has a limiter of 90% or less (move slider to the left, never to the right), as per screen shot above. This will help prevent damages to your actuator if it bottoms out.

    [​IMG]
    • Informative Informative x 1
  3. Tonantsa

    Tonantsa New Member

    Joined:
    May 19, 2015
    Messages:
    20
    Location:
    Finland
    Balance:
    81Coins
    Ratings:
    +1 / 0 / -0
    My Motion Simulator:
    SCN5
    Can I use SCN5 100mm with traction loss :) ?
    Does it have enough "power" for traction loss? And what about travel, is it enough?
    As far as I know, Simxperience uses SCN5 for traction loss?
  4. prodigy

    prodigy Burning revs

    Joined:
    Oct 27, 2013
    Messages:
    459
    Location:
    Croatia
    Balance:
    6,698Coins
    Ratings:
    +399 / 4 / -0
    My Motion Simulator:
    2DOF, 3DOF, AC motor, SCN5, JRK
    Dampers should be necessary with SCN motors, Simxperience has a damper bar where both motors are connected. It prevents harsh vibrations. It is also good to have a carpet under the sim..

    For traction loss I don't really know, I am in the process of building my sim with traction loss and I have 3x SCN5 150mm. I don't know if it will be enough for TL or I would need to get SCN6. As you said, Simexperience uses SCN5 for traction loss, so I hope mine will work too.

    I think I will be done with building my sim by the end of this week and I can tell you if SCN5 is enough.
  5. Tonantsa

    Tonantsa New Member

    Joined:
    May 19, 2015
    Messages:
    20
    Location:
    Finland
    Balance:
    81Coins
    Ratings:
    +1 / 0 / -0
    My Motion Simulator:
    SCN5
    Did you finish this project? Is SCN5 enough for traction loss :) ?
  6. prodigy

    prodigy Burning revs

    Joined:
    Oct 27, 2013
    Messages:
    459
    Location:
    Croatia
    Balance:
    6,698Coins
    Ratings:
    +399 / 4 / -0
    My Motion Simulator:
    2DOF, 3DOF, AC motor, SCN5, JRK
    Hey man, I still have a few days work, but most of the parts are done.

    The SCN5 is enough for TL, I have quickly tested it without load and with load (90kg man) and it works. :thumbs

    My sim is also heavy without load, I have used steel tubes 40x40 mm (now I'm thinking I could have used 30x30mm), but once you put it on the wheels is much easier too move.

  7. Tonantsa

    Tonantsa New Member

    Joined:
    May 19, 2015
    Messages:
    20
    Location:
    Finland
    Balance:
    81Coins
    Ratings:
    +1 / 0 / -0
    My Motion Simulator:
    SCN5
    Thank you for your video, gives me hope and inspiration that I can use my spare SCN5 :)
    SCN5 150mm seems to give enough movement for traction loss.
    I wonder would SCN5 100mm give enough movement, difference is not that much. You don't need much movement especially with Oculus?

    I'm planning to use lazy susan and transfer ball units, no wheels at all.
  8. prodigy

    prodigy Burning revs

    Joined:
    Oct 27, 2013
    Messages:
    459
    Location:
    Croatia
    Balance:
    6,698Coins
    Ratings:
    +399 / 4 / -0
    My Motion Simulator:
    2DOF, 3DOF, AC motor, SCN5, JRK
    I think SCN100 would be ok too.

    I still need to find optimal position of the SCN for traction loss, in the video it was only experimental for me to test if it can move the load.

    But regarding the movement distance, if you position your SCN closer to the seat center you can have more movement but I think it is bigger stress on the SCN. In my case the motor is further at the back, I will try to move it closer to the center and test how much more movement I can get.

    Also it all depends on your frame and design, once you have those stuff ready you can see and test the best SCN position for TL.

    Regarding the Oculus, I don't know, I have sold my Vive headset before I started making this 3DOF simulator. Vive was working fine for me with 2DOF, I think it should be the same with traction loss too.
  9. PiaMan

    PiaMan Active Member

    Joined:
    Aug 2, 2015
    Messages:
    192
    Location:
    Saskatchewan, CANADA
    Balance:
    607Coins
    Ratings:
    +131 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, SCN5, Arduino
    Also the simexperience scn holder things have rubber mounting inside. I use large rubber feet under my sim and i dont have any vibrations or very minimal transfer to the floor. Its on a hard floor surface no carpet. Between the bar, the holder mounts and rubber feet i think it would solve your issue
  10. Tonantsa

    Tonantsa New Member

    Joined:
    May 19, 2015
    Messages:
    20
    Location:
    Finland
    Balance:
    81Coins
    Ratings:
    +1 / 0 / -0
    My Motion Simulator:
    SCN5
    How much speed is needed for traction loss?

    Could I use SCN5 200mm to get more movement? 200mm version speed is rated at 200mm/s unloaded but with load it will drop. Is 100mm/s-150mm/s enough speed for traction loss?
    Is it good idea to even think about using that SCN5 model :) ?