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

Showroom 2dof foot mount sim powered by 12v Electric Jacks

Discussion in 'DIY Motion Simulator Projects' started by mariano68, Nov 1, 2015.

  1. mariano68

    mariano68 Active Member

    Joined:
    Nov 15, 2014
    Messages:
    577
    Occupation:
    builder contractor
    Location:
    Argentina
    Balance:
    3,338Coins
    Ratings:
    +395 / 2 / -0
    My Motion Simulator:
    2DOF, Arduino, 4DOF
    It is great to see that I made at least a little contribution to the forum :)
    • Like Like x 3
  2. bsft

    bsft

    Balance:
    Coins
    Ratings:
    +0 / 0 / -0
    thats not the only place the contribution was made to.....
  3. mariano68

    mariano68 Active Member

    Joined:
    Nov 15, 2014
    Messages:
    577
    Occupation:
    builder contractor
    Location:
    Argentina
    Balance:
    3,338Coins
    Ratings:
    +395 / 2 / -0
    My Motion Simulator:
    2DOF, Arduino, 4DOF
    That's great then!
  4. mariano68

    mariano68 Active Member

    Joined:
    Nov 15, 2014
    Messages:
    577
    Occupation:
    builder contractor
    Location:
    Argentina
    Balance:
    3,338Coins
    Ratings:
    +395 / 2 / -0
    My Motion Simulator:
    2DOF, Arduino, 4DOF
    I will be adding heave to my sim soon, mechanical part is almost resolved, just a question about potentiometer setting. I use SCM3 wich as a default, centers the motors at the start, this is no problem for 2dof, but for the heave movement I will use a spring that it will be getting its center position once I get on the sim, so the only way that the motors won't struggle against the spring, is to power on the heave motor once I get on the sim, but also if the sim is used by another person (different weight) the heave motor will be trying to center the sim all the time. Any advice?
  5. 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
    How have you implemented heave, do you have some pictures or better yet a video?

    I am just in the process of swapping mine over to a 50:1 gearbox for heave, as it can't be back driven.
  6. mariano68

    mariano68 Active Member

    Joined:
    Nov 15, 2014
    Messages:
    577
    Occupation:
    builder contractor
    Location:
    Argentina
    Balance:
    3,338Coins
    Ratings:
    +395 / 2 / -0
    My Motion Simulator:
    2DOF, Arduino, 4DOF
    Not done yet, but the idea is to do a center spring with a guide, and one or two motors with levers, something like this but with two motors:

  7. mariano68

    mariano68 Active Member

    Joined:
    Nov 15, 2014
    Messages:
    577
    Occupation:
    builder contractor
    Location:
    Argentina
    Balance:
    3,338Coins
    Ratings:
    +395 / 2 / -0
    My Motion Simulator:
    2DOF, Arduino, 4DOF
    More like this, but using a lever system like the other video
  8. 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
    When I get the new lever made up and change the gearbox on mine from the 25:1 to the new 50:1 then I will be able to let you know how it compares with a gearbox that can't be back driven.

    On mine the 25:1 could not hold the sim when nobody was on it because of the heave assist spring. Also it was fine for racing but the motor got noticeably warmer when I started to mess with flight sims, particularly long climb outs constantly putting sustained load on the heave motor.
  9. mariano68

    mariano68 Active Member

    Joined:
    Nov 15, 2014
    Messages:
    577
    Occupation:
    builder contractor
    Location:
    Argentina
    Balance:
    3,338Coins
    Ratings:
    +395 / 2 / -0
    My Motion Simulator:
    2DOF, Arduino, 4DOF
    Thanks for your reply.
    I will (I hope) going to Brazil on vacations in 15 days, once I get back I will start working on the heave mech.
  10. Kass55

    Kass55 Member

    Joined:
    Aug 19, 2015
    Messages:
    70
    Occupation:
    PC support
    Location:
    UK
    Balance:
    325Coins
    Ratings:
    +16 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, JRK
    Thanks Mariano68,
    Jack motors look excellent idea for upgrading my wiper motors 2DOF.

    I haven't tried, but could you not use an electric car jack under / welded to the UV joint and use it to give you heave ?
    It lifts cars so strong and stable. So is it too slow ?
    If so, could change gearing ?
  11. mariano68

    mariano68 Active Member

    Joined:
    Nov 15, 2014
    Messages:
    577
    Occupation:
    builder contractor
    Location:
    Argentina
    Balance:
    3,338Coins
    Ratings:
    +395 / 2 / -0
    My Motion Simulator:
    2DOF, Arduino, 4DOF
    Thanks!
    It is too slow, but if it lifts 2000kg with the current gearing, it could be able to do the work with a 1/4 of the reduction (500kg is more than enough).
    If you have access to gearing stuff could be nice to try!
    My current idea to use it for heave is keep the gearing and add a lever.
    9.jpg
  12. 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
    I am very pleased with the 50:1. As it can't be back driven it has no problems holding the sim when unloaded against the heave spring. Speed wise performance is still good

    The only down side is that the 50:1 comes with a large 8mm bolt hole through the otherwise solid shaft, which I was a bit concerned weakens the shaft. I had a local machine shop turn up a very thick walled interference fit lever tube for me so the shaft is supported as much as possible.
    Last edited: Oct 11, 2020
  13. mariano68

    mariano68 Active Member

    Joined:
    Nov 15, 2014
    Messages:
    577
    Occupation:
    builder contractor
    Location:
    Argentina
    Balance:
    3,338Coins
    Ratings:
    +395 / 2 / -0
    My Motion Simulator:
    2DOF, Arduino, 4DOF
    Good idea @noorbeast
    The Jacks motor can't hold if not powered, but it is not much of a problem.
  14. Trigen

    Trigen Active Member

    Joined:
    Nov 25, 2018
    Messages:
    472
    Balance:
    2,826Coins
    Ratings:
    +176 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    I would have never have thought of this so cheers for the idea! I did a quick test and it really does not take that much to lift my 140+kg (me included) Simlab P1X rig from the back using levers. I happen to have 2 wiper motors lying around and some heavy duty springs that will work wonders. It does move a little back and forth though so that needs to be addressed but my rig is already on wheels so its not a big issue for now