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

Car chassis project

Discussion in 'DIY Motion Simulator Projects' started by sim2go, Aug 29, 2017.

  1. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    Last stage of this sim will be making it mobile. Hoping to finish this and make it to local IRL events (rally / racing ).

    IMG_20210214_173005.jpg

    Using HEA 160 and some 160 tube for whole thing. It will be easy to attach roof/tent/projector screen.

    IMG_20210213_201420.jpg

    Still first co2 balloon on MIG welding. Guessing it will hold the thing together. Total project weight will come something like 1000-1100 kgs. Heavy bottom solves anchoring.

    IMG_20210214_130358.jpg
    • Like Like x 4
  2. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    Received 4x300kg wheels to move platform around in garage to be able use car lift for other purposes. I mean they are huge compared to what i've used. Also ball bearings for stabilising sandwitch layers. It'll be kinda expensive to drill such wide holes, instead I'm thinking of getting pipe with thick walls.

    IMG_20210227_155105.jpg

    Two 50x50x4 tubes is not enough to hold whole chassis weight and has slight bent to it, will add support.

    IMG_20210227_194051.jpg
    • Like Like x 2
  3. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    So instead of cutting pipe with thick walls decided to pay for 8 holes drilling (30e really for same day pickup). It would've been pain getting 4 same height pipes.
    ball.JPG

    eiles.JPG

    For upper layer two additional holes for screws to adjust height. Bottom height welded permanent.

    greziam.JPG
    It was luck to manage get all balls to get contact, at least at center position.

    kontaktas.JPG

    When moved around one or two balls sometimes lose contact, but no worries as it will need readjusting after some time of use.

    slides.JPG
    centras.JPG

    Now to get old system running need to place gas struts and connect reducer arms/levers. Also get cables going. For sensors instead of hall sensors will use SSI contactless, should help dealing with slight movements in construction.
    • Like Like x 3
  4. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    Covering platform bottom. After doing it will go for wires, cannot continue work with motors/reducers without them.

    IMG_20210411_171611.jpg
    • Like Like x 2
  5. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    Things are going well. Most of the re-welding thing is done.

    darbai.JPG

    for yaw axis will use 60:1 instead of 50:1 this time. thanks to colleague pointing out serious mechanical error in my pulling mech, should do right this time.

    60 prie vieno.JPG

    this time using SSI sensors. sadly still getting a little chirping in VFDs between "rdy" and "0.0hz". will solve on or another way.

    yaw_first.JPG
    sorted out distances, now will properly wire up tech.
    and btw, guys from VirtualRacing suggested to work on their car instead to make things this season.
    looks great.

    P4280527.JPG

    probably going for official license of SimTools :)
    • Like Like x 2
  6. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    Had few issues, but luckily done with most of them.

    This is 25% motor speed, no adjustment at all, running old settings.

    Pitch is held and moved by single m10 bearings and 40cm screw, which gives that bouncy boiii.

    Still have to finish some things up besides it. Thinking about moisture and how to cover.

    • Like Like x 4
    • Winner Winner x 4
  7. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    IMG_20210531_164704.jpg

    Coming out as pretty minimalistic motion platform.
    I think next project combining shipping container as motion frame base will come out much better and much faster
    • Like Like x 1
    • Creative Creative x 1
  8. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    Logical way to go would be with
    61DJs+AelVL._AC_SY355_.jpg

    but it takes time to make, can't find any producer in country.

    Playing around with 3mm thickness rubber.
    Previously used gas struts to smoothen out backlash, these gave even better effect.

    IMG_20210601_104847.jpg
    • Like Like x 1
  9. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    Its quite challenging to make it as waterproof as possible. First off started sealing off every hole between plywood and H profile, but ended up drilling extra holes near motors, vfds box, wires. I guess it would be easier to make controlled water spillout and not sealing all the moving thing.

    IMG_20210602_184104.jpg
  10. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    This was pitch with m10 screw holding things up.
    After changing it to m16 set, the tightness and overall flexing changed and all the settings needs to be redone

    • Like Like x 2
  11. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    And another post for more CR, flashback from BM

    • Like Like x 4
  12. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    • Like Like x 3
  13. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    Got rid of axles, moved wheels to yaw axis.
    It looks different with wheels moving with yaw only, but I'd say not for worse. 40kg of conditioner gone for now as well.
    PID for both 10/0/1 for now.

    IMG_20220204_154228.jpg

    Something like minus 200kg
    IMG_20220129_172417.jpg

    giphy (1).gif
    • Like Like x 6
  14. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    30% speed
    I think this is best attempt yet. I'll try to bump up speed more, but with it comes additional problems. The ball bearing sandwitch is good idea, but needs to be done much more precisely with thicker calibrated steel.
    Also it seems pitch limits are too high. Yaw axis still have sway on it, will try to match yaw to yaw.

    • Like Like x 2
    Last edited: Feb 13, 2022
  15. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    IMG_20220402_194607~2.jpg

    Had to cover sides with plywood, previous attempt with 3mm rubber didn't workout, because of its weight and it becoming less less flexible. Whats left is to cover front, where reducer levers are seen to prevent children interests at some level and some isolation for sandwitch wheels to avoid sand particles.

    Previously used 10m usb cable to connect AMC1280 to PC, had random disconnects ending up as SimTools Engine software crash. Swapped it with 3m USB cable -> Active usb hub 5m cable -> PC. It solved the issue.

    Looking for router for making local host connection to make pc and android phone talk eatchother. Will add streamdeck controls to make everything easier and adjustable for people likes, like setups, wheel strenght, timers, etc.

    As it is platform cost isn't as high as one could think. Very roughly its under 5000€.

    Hopefully soon to make short journey to some local park, to test how things are going - transportation, loading/unloading platform, leveling it, energy connection. Will try to get some shots :)
  16. 0v3rkill

    0v3rkill Member

    Joined:
    Mar 24, 2022
    Messages:
    46
    Occupation:
    Programmer
    Location:
    Netherlands
    Balance:
    - 262Coins
    Ratings:
    +24 / 0 / -0
    My Motion Simulator:
    2DOF, Arduino
    wow i thought my name was 0v3rkill ot suits you more :)
    • Friendly Friendly x 1
  17. sim2go

    sim2go Member

    Joined:
    Mar 1, 2016
    Messages:
    44
    Occupation:
    Operator
    Location:
    Lithuania
    Balance:
    245Coins
    Ratings:
    +69 / 1 / -0
    My Motion Simulator:
    2DOF, Motion platform
    Before weight reduction reducer backlash and long pipes was creating really noticeable bouncing at the back of the car.

    This time around motion looks so much more clean. Bounce is still there, but much less eye catching.

    • Like Like x 2