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Gavril T75

Discussion in 'Official Content' started by gabester, Sep 11, 2013.

  1. rsb0204

    rsb0204
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    kind of, the vehicle has a very stiff suspension and chassis to be able to handle the large loads it is ment to carry, and VERY powerful brakes for the same purpose. because the vehicle is built so large and heavy when at speed the momentum is such it is not easily stoped, the brakes are far more than powerful enough to stop an empty rig on a dime, but there simply isn't enough traction to do so. traction can be gained (easily) by adding either weight or wider tires, however most trucks are so wide that fitting wider tires simply isn't an option. so the only time they get the traction they despratly need is when they are loaded. it is also worth noting that on a bobtail truck almost all of the weight is on the front axle/s.

    summery - loaded trucks stop good, bobtail rigs stop like crap, and it dosent make ANY sence unless you overthink it lol. basicly stoping a truck is like trying to stop a modern pick up truck with racing brakes on model-t tires. you need weight.
     
  2. gabester

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    There's a fundamental physical rule that you guys are overlooking. The force that keeps a vehicle going (momentum) is a function of how much it weighs. And so is the normal force that gives the tires traction. So in theory, adding weight to a vehicle wouldn't have any impact on braking distance (assuming the tire grip is the limiting factor).
     
  3. rsb0204

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    yes, if the weight were evenly distributed, sence most of the weight of a bobtail is only on the front, the front brakes have the most traction. all 2 of them. when loaded the back 4 brakes have more traction than the front 2 could ever have, ofcouse 4 brakes are going to create more friction than 2 and the front two still have more than they did, and lets not forget the 4 brakes on the trailer...
     
  4. gabester

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    You're right about weight distribution having an impact on it :) But my point still stands - the amount of weight you throw at a vehicle is not necessarily relevant (all other things being equal) since the force trying to keep the vehicle going, or keep it going in a straight line, is proportional to the force giving the tires the grip to slow it down or turn it.
     
  5. rsb0204

    rsb0204
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    all very true, as you said "all other things being equal" is not the weight itself, its where the weight is applied. and if more weight is on 4 brakes instead of 2 it stands to reason that stopping distance would be decreased over the opposite scenario.
     
  6. gabester

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    Yep. All this behavior should arise naturally in BeamNG since we don't fake anything. When we have trailers implemented they should behave just like real ones. Right now the T75 locks up all 8 rear wheels in hard braking, since it's unladen, but with a trailer and 4 extra brakes it'd probably have a much smoother deceleration.
     
  7. rsb0204

    rsb0204
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    and that's what I love about Beamng, you can never make a simulation EXACTLY the same as reality, but you guys do a dam good job of it, and I appreciate it.
     
  8. RobertGracie

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    Are you running air brakes in this truck...if so couldnt you possibly decrease the pressure only by a few PSI so it wont lock up....no wait...this is a truck from the 1980s...I have to remember that so you do want it to be a little bit more twitchy under braking right?
     
  9. rsb0204

    rsb0204
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    air brake tech hasent advanced as much as fluid brake tech sence the 80's, the biggest difference in brakes from then and now is on older trucks (about pre 90s) you could disable the front brakes for increased control while driving in snow/ice conditions. other than that its mostly bigger dumms and better shoe compounds. if anything the brakes on this should be slightly less likely to lock. no ABS on trucks not then or now, and we don't have disk brakes like modern cars get, so the differences arnt as great
     
  10. gabester

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    Unfortunately, we don't simulate airbrakes yet. They just function like regular brakes, with a simple torque value and linear application. In the future we will look into a more accurate simulation, but for now this serves the intended purpose.
     
  11. Craftworth

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    Can I ask about aerodynamics in BeamNG? Like we saw, planes/helicopters can fly by aerodynamics/air, but the damaged front of the car does not affect the top speed. So, how does it work or it's still work in progress? :)
     
    #431 Craftworth, Feb 14, 2014
    Last edited: Feb 14, 2014
  12. jtreign9097

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    I Don't think the Drag Values Change after any impact, From what i have seen the vehicle is usually slower/off balance when in any impact. the body panels have a friction resistance on the ground when they detach partially . i think all the body panels have there independent drag settings like the body or frame. i am still amazed at the Flying physics but a sheared off fender doesn't rip off at any higher speed or veer vehicle in a different way if its on by a thread, or at least i have never seen it yet since maybe there is a setting to make this possible its just not on the vehicles yet?:confused:
     
  13. Garebear

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    You know, when i get this, I will destroy everything!
     
  14. RobertGracie

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    You will not destroy everything apart from...CHUCK NORRIS....okay off topic over

    I know what you mean I am itching to try this thing out against a flock of Pigeons..
     
  15. Garebear

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    Im just excited to broadside a Grand Marshal at 75 :)
     
  16. Aboroath

    Aboroath
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    THIS. I also can't wait for the inevitable outrageous mods for this thing.:p
     
  17. TU250X

    TU250X
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    Will Trailers be in a later update?
     
  18. TechnicolorDalek

    TechnicolorDalek
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    They are planned. Gabester has mentioned that they may secretly sneak tow hitches into the race update..
     
  19. JDMClark

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    T75 has the fifth wheel on it already. They just need to code some hook nodes. Trailers have already been made with just nodes and beams for the D15. I'd love to see trailers and I hope east coast USA is big enough to handle the T75 pulling a trailer.
     
  20. TechnicolorDalek

    TechnicolorDalek
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    Oh, yeah. Very eager for some truck 'n trailer action. My father was a trucker, one of my most vivid memories from early childhood is of him taking me in his truck for a day. I've played trucking games/sims ever since I could use a computer. Quite eager to get some real crashing physics... to test stuff. Big fan of ETS2.. but even with the realistic physics mod it's nothing like BeamNG.
     
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