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Direct wheel bases - Take hands of wheel on a crash?

Discussion in 'ACC Hardware Discussions' started by brandaopj, May 21, 2020.

  1. brandaopj

    brandaopj Rookie


    Should we take the hands of the wheel when we see we are going to have a violent crash to prevent injuries?

    Whats the recommended behavior

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  3. mike reynolds

    mike reynolds Hardcore Simmer

    I don't think you really need to in ACC, at least with a Fanatec DD....In raceroom however, beware!
  4. brandaopj

    brandaopj Rookie

    and in Iracing I think its the best approach
  5. tlsmikey

    tlsmikey Simracer

    Depends upon how much force you're running. I don't run mine that high, so it's not an issue for me but I know people that feel like they need 20Nm of force.
  6. brandaopj

    brandaopj Rookie

    i am running mine ate 50% Force Feedback
  7. AndyK70

    AndyK70 Alien

    Now what is your wheel capable of in terms of Nm?
    If it is maxed out at 9Nm and you're playing at 50% there is no need to take hands off.
    If it is a Simucube 2 Pro with 25Nm running at 50% you maybe should consider taking your hands off, when crashing.

    BoostedMedia, an Australian Youtuber and Sim-Racer had his wife practicing for a little challenge and she got her thumb broken by that wheel and it was not on high torque mode!
    chksix likes this.
  8. Seelenkrank

    Seelenkrank Racer

    my servo can make 29Nm, dont know if the system can do it full (power).
    but got it on 100% in the driversetting und ingame 35-45% (Porsche Cup = 35%).
    and i keep the hands on the wheel because forces never get to high and if i let go the chance getting hurt is higher because of the very fast bouncing of the wheel.
  9. Clivew

    Clivew Rookie

    In ACC, you don’t get crash forces through the steering wheel. ie, if you hit a barrier at high speed, you will not feel the force of the barrier hitting the front wheels, as you would IRL.
  10. Follow whatever safety guidelines are provided with the wheel regardless of what game you play or users tell you!
    AndyK70 and LATE4APEX like this.

    LATE4APEX Alien

    So just what would be the max "crash forces" you would get through a direct drive wheel ?
  12. Serge M

    Serge M Alien

    In iRacing it’s the sudden change of wheel angle, so if you belt a wall and your wheels go instantly 90 degrees the steering wheel will also do the same. As it’s a big impact it will send max force instantly through the wheel, can certainly cause injury. iRacing transmits steering shaft torque so whatever it is on the steering shaft, that’s what you get.

    I run my SC2 Ultimate at 35% for about 12NM peak force which I believe is about max you see in a GT3 car in high G Force corners, don’t ask me where I read that, only issues I’ve had is quick changes of steering direction in a crash.
    LATE4APEX likes this.
  13. brandaopj

    brandaopj Rookie

    taken from other forum:

    Personally I would suggest NOT to take your hands off the wheel UNLESS you feel that there are forces compromising your hands after the first initial hit.. i.e the wheel seems to want to keep turning. iRacing has gotten pretty good at eliminating MOST errant after crash forces.. The reason I say this is that the initial jolt is fleeting in that it happens and it is gone. BUT if you take your hands off the wheel you allow the "system" to take over and then it tried to combat itself until you hit an estop to try (unsuccessfully) to catch the out of control wheel..

    I say unsuccessfully because I have seen way more bruises due to the instinct of trying to stop the spinning wheel after the wreck.

    There is a small art to wrecking and that is that if heading toward the wall in a more straight fashion then turn your wheel so the tires hit perpendicular to the wall.. If you are coming in at a shallow angle than turn your wheel so the wheel hits face against the wall.. with of these will reduce the hit through the wheel upon impact.
  14. While playing PC2 with my g920, the wheel was turning wildly and if your hand was inside the rim, it would definitely hurt if not break. In ACC even after upgrading to CSW V2.5 crushes did not feel that much. I thought i did not not configured it high in Fanalab. Even Fanatec recomend to remove the hand from wheel during calibrations. If the sim sends a big deal of torque during the crushes, the 20 Nm is more than enough to break longitudinal bones in to pieces. With very strong arms and hands you might (might) be able to hold on to the wheel. But if you want to take your hand off, i will strongly recommend to open up your arms a bit and remove your hands and arms 10cm or so away from the wheel. Those rectangular wheels, Formula, McLaren etc, can easily break bones if their sides accidentally hit.

    Though there is a paradox here. You are buying a 20+Nm wheel base to simulate a race car as real as possible but remove hands which no good real race driver would. Along with the steep prices, this was my second justification to go with CSW instead of DD.
  15. Serge M

    Serge M Alien

    All real world race car drivers are suppose to take their hands of the wheel before a crash (hitting a barrier/wall), it’s a standard safety thing.
  16. Dewald Nel

    Dewald Nel Simracer

    Well, that's just not true.
    LATE4APEX, chksix and Serge M like this.
  17. pankykapus

    pankykapus KS Dev Team Staff Member KS Dev Team

    In ACC these forces are disabled in the FFB, you only get forces that come from the contact patch with whatever is on ground.

    However, due to the caster effect when the car is sliding and spinning uncontrollably or reversing, it can violently turn left and right, but this is preventable by holding onto the wheel, what is dangerous is when you let go of the wheel and let it swing wildly and want to catch it again. It is also dangerous when people crash into you post race, when you're stopped and not holding on to the wheel. Those people have a special place in afterlife. I sometimes hit the e-stop after finishing so that I can do the cooldown lap without worrying about what others might think to be funny.

    In other sims where these "crash" forces are not reduced, you would wanna let go like in a real car.
    JanR, Rogue Leader, AndyK70 and 5 others like this.
  18. Rogue Leader

    Rogue Leader Simracer

    <--- Crashed actual race car. Removed hands from wheel. Had I held it my wrists would have been broken. This is a normal thing.

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