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 here. Do not following these rules will lead to permanent exclusion from this website: Read the forum rules.
  4. All new posts and threads should be written in English. Please do not create dual posts in other languages. If you are not a master of the English language you can use an external service to create a translation of your words, for instance, Google translate or DeepL.
    Due to low activity, we've also closed the french section.
    Dismiss Notice

Sharo garazhas - DIY Joyrider with e-bike motors

Discussion in 'DIY Motion Simulator Projects' started by domse, Feb 29, 2020.

  1. Spart

    Spart New Member

    Joined:
    Mar 3, 2020
    Messages:
    24
    Occupation:
    Student
    Location:
    Kauno kaimas
    Balance:
    308Coins
    Ratings:
    +14 / 1 / -0
    My Motion Simulator:
    DC motor, Arduino
    Thanks !! Too bad the g forces arent that big compared to DOF type rig because when you have a lot of angle you always lose some acceleration (speed). We tryed to design this rig to be as universal as possible, in the track it only uses about 30-50% of its angle, the rest is for extreme cases like fliping over or rolling. It also works very well in offroad when car in the game actually tilts at bigger angle. These absorbers are just an addon in effort to combat mechanical resonance so the rig wont resonate so much under breaking and accelerating. Side absorber is unknown origin but the one in the back is from KIA CEED. They were just laying around so we used them. But they dont look pretty so thats a little problem.:(
    • Like Like x 1
  2. CannonBallEddy

    CannonBallEddy New Member Gold Contributor

    Joined:
    Aug 30, 2018
    Messages:
    7
    Balance:
    49Coins
    Ratings:
    +4 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    I understand your situation and appreciate your input. So big question when r u going to use VR with it as this is my goal a 360 rig hopefully. I designed a nice 3d printed model that does 360 in both the roll and picth directions both ways. It works but I am using two continuous rotation servos. I got it rigged up to a joystick at the moment and have also used a rotary encoder which gives me step by step control of it. I did try it with simtools but it started freaking out but kinda works. I will make a post about my rig shortly and put the files onto thingyerse if any one fancys making one. I will pop back from time to time to see how you are getting on with your rig and see if there are any new videos.
    • Like Like x 1
  3. Spart

    Spart New Member

    Joined:
    Mar 3, 2020
    Messages:
    24
    Occupation:
    Student
    Location:
    Kauno kaimas
    Balance:
    308Coins
    Ratings:
    +14 / 1 / -0
    My Motion Simulator:
    DC motor, Arduino
    Havent done a lot recently. Fixed few alignment issues with monitors, seat and steering wheel, everything was of center and didnt feel right. Bigger problem I had to deal with was pedals, the one that came with our wheel (T500 Rs) are quite nice, they can be inverted so thats the first thing I did with them, it give more "profesional" look to all rig. The problem was that the foot platform below pedals was to high and there was no way to adjust it so I straight forward just removed half of the pedals (the bottom part) and made my own, I also added option to further adjust pedal tilt to really fine tune it to perfection. I also have to think of some plate that covers everything and gives flat surface for your heels to rest. I will probably just cut a sheet of acrylic glass, its plenty strong and light weight. IMG_20200322_224445.jpg
    • Like Like x 2
  4. Mike5050

    Mike5050 New Member

    Joined:
    Mar 24, 2020
    Messages:
    26
    Occupation:
    Chiropractor
    Location:
    New Jersey
    Balance:
    166Coins
    Ratings:
    +5 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    Very nice build, is the chain and sprocket next to your arm safe?
  5. domse

    domse New Member

    Joined:
    Nov 18, 2017
    Messages:
    5
    Location:
    Lithuania
    Balance:
    - 18Coins
    Ratings:
    +5 / 0 / -0
    Thank you! There will be an acrylic glass guard, but so far it hasn't been an issue.
  6. Spart

    Spart New Member

    Joined:
    Mar 3, 2020
    Messages:
    24
    Occupation:
    Student
    Location:
    Kauno kaimas
    Balance:
    308Coins
    Ratings:
    +14 / 1 / -0
    My Motion Simulator:
    DC motor, Arduino
    So because of the quarantine our progress with sim ring has come to a halt, but after week brake we got back to it. This time in virtual space. We have been thinking about 4th axis of movement - heave. During last few days me and my friend were designing and modeling our idea. We came across a lot of problems, first one was how to keep traction loss and have heave. Solution was to move traction loss one level lover to the ground so heave wont interfere with traction loss. So about heave axis design and how it works. We are thinking of using 4 trapezoidal thread rods to lift the sim up and down. All rods will be connected by chain to keep them all rotating at same speed and let rig lift evenly. We also had to figure out how to attach rods so they will be pulled and not compressed, that was a big challenge but we extended main rig frame down ant additional frame on the ground up so we can criss cross connect frames to rods. Other problem was the engine placement and the way they will drive the chain, we somehow managed to fit them in the middle (right below our center of mass) and design sturdy mount that would only flex 1 mm under 200 kg load (yes we ran a simulation on that). Since we are planing to use two 800 W 36 v motors we had to think of something to help them lift all the weight. Our 1.6 kW system would give us only 0.16 G acceleration which is too small for us, we need more, we want more :D.
    So I came up with a solution to apply constant load force to upper frame which would help motors. Its a pneumatic cylinder, since we will have 26 cm of travel, the cylinder should too. To achieve close to constant force applied by the cylinder i calculated that we need at least 10 cm diameter piston and an air tank that is 10 time bigger then volume of the cylinder. This would provide us with very low change in pressure during all piston travel and that would make more predictable heave axis because motors will always be pulling same weight up and down. The cylinder will be mounted in center right between two motors ant that spot should easily hold up to 400 kg force without major deformation. Adding the pneumatic cylinder to the system would take 90% of the rig weight from motors so by doing a little calculation we should get about 1.8G acceleration power which is plenty but adding the friction should cut this value in half so we may be looking at 0.8-0.9 G of acceleration in reality. We still have a lot of work to do, havent really figured out where do we get the parts for the cylinder and how effective it will be but I will keep you guys updated in making of it. I'll attach some photos of our 3d cad model so you can get the basic idea of how its going to look . So in this photo the basic concept of threaded rod mounting is shown.
    90977070_530192201014870_7568318376594898944_n.png
    Here is the electric engine mounting plate with aditional mounting plate below for the pneumatic cylinder.
    91355142_609040463295653_8553649561527123968_n.png
    The rig is raised to its max height.
    90922688_204990487612263_3588493700348510208_n.png
    And here it is fully lowered.
    91092310_219714842715410_6836145710983806976_n.png
    • Like Like x 1
    • Creative Creative x 1
  7. Mike5050

    Mike5050 New Member

    Joined:
    Mar 24, 2020
    Messages:
    26
    Occupation:
    Chiropractor
    Location:
    New Jersey
    Balance:
    166Coins
    Ratings:
    +5 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    looks like a great idea can't wait to see it working.
  8. Spart

    Spart New Member

    Joined:
    Mar 3, 2020
    Messages:
    24
    Occupation:
    Student
    Location:
    Kauno kaimas
    Balance:
    308Coins
    Ratings:
    +14 / 1 / -0
    My Motion Simulator:
    DC motor, Arduino
    Finally somethings happening with the rig, quarantine is not working in our favor so we are working from home. Since we cant make any proper progress (me and my friend live long distance apart and university is closed) we decided we can make useless progress. BEHOLD people"self stabilizing gyroscopic can holder" for your drinks. We came across this idea when we were thinking about adding something unique and new to our project. It took me about 4-5 hours to model everything and optimize so everything clears. We should start 3D printing it next week, lets hope it works out fine. Its designed for standard monster energy (or beer ) can add keeps the can vertical up until 45 degrees of frame rotation. Since we also have HEAVE axis in plans we are also thinking on adding vertical stabilization so the drink would not spill on any circumstances. It uses 8 13mm bearing (there are empty holes instead of bearing for now) and few M4 screws. It srews on 40x40 mm square tubing.
    rig post.png
    • Optimistic Optimistic x 1
    • Creative Creative x 1