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DIY pneumatic cylinder advice

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Spart, Mar 29, 2020.

  1. Spart

    Spart Member

    Joined:
    Mar 3, 2020
    Messages:
    33
    Occupation:
    Student
    Location:
    Kauno kaimas
    Balance:
    223Coins
    Ratings:
    +26 / 2 / -0
    My Motion Simulator:
    DC motor, Arduino
    Hello everyone. Me and my friend are making chain driven racing sim, we only have pitch/surge and sway/roll axis, also traction loss( not finished yet), and we want to add heave. We figured out the basic concept we will use, its basicly 4 threaded rods that are driven by 2 motors (800W each) and all linked together by chain/belt (havent decited yet). I did all the calculations, we should get about 250mm/s speed, didnt really figured out how to calculate acceleration. But the main problem is that those two motors will need to lift heavy weight, rig with driver should be about 200-250 kg, in theory those engines should lift it but the problem is that it will lift slow and lower fast. So to combat that I decited to make pneumatic cylinder that would support about 150-200kg. Did the calculation, I should need 2-3 bar pressure and use 10 cm diameter pvc pipe as piston. I will also attach large air reservuar so the pressure wont change a lot during all piston stroke(25 cm). Have anyone have any experience in making airtight large diameter air pistons ? Iam not sure what kind of O rings I need to use to hold 3Bar pressure without any leakage, because fiting a compresor to compensate for piston air leaking is not an option. Pls help me
    Spart, Mar 29, 2020
    #1