Ok so i am making a car (Name editted to lock this)

[JammyGamer]

i am currently working on a car that i have uploaded to the steam workshop but it has a bad problem

the car is constantly pulling to the right and i have been checking for any issues but i cant find any this is annoying me as this is probably the best handleing car i have ever driven in this game but its pulling to the right kills it

You will have a special version of the car dedicated to you if you figure out the problem

Link to the mod
http://steamcommunity.com/sharedfiles/filedetails/?id=1263947520

[GSkull]

The car needs downforce. Since the car is lightweight and powerful, it is hard for the wheels to find traction, causing the car to veer to one side or another. If you add some flaps under the front and rear of the car, it should add downforce.

[JammyGamer]

yea ok i will give that a try :)

[JammyGamer]

I gave it a try and it made them car pull to the left insted of the right but i have done a little more work and its a little better to control.

i think i need a experinced builder

[Pwac]

well im not very experienced but im pretty good with physics and cars irl so maybe brick rigs might have something related to any realistic physics so i may or may not be able to help (i know it doesn't really but i haven't tested it fully)

[Game of Ur]

i'm very new to the game (only 2 hours) but i think i know the problem. if you travel in a straight line and it travels to the left, or if you can turn left more than you can turn right, i think the problem is that the weight is uneven. the weight on the left side is higher than the weight on the right side of the car. make sure the bricks are the same on both sides and that the bricks on one side has the same material as the brick on the adjacent side.

it could also be a problem with steering, such as you placing the axles wrong, but i'm not so good at that.

i'll download the car and see if i can find anything.

[Game of Ur]

i found the problem. you have a physics-related problem, i believe. notice that when you select a brick in the editor, it shakes slightly. it seems the physics of the car is unstable. i was informed by a guide that this is caused by creating a car with overlapping bricks.

[Atlantic]

Originally posted by Set:

i found the problem. you have a physics-related problem, i believe. notice that when you select a brick in the editor, it shakes slightly. it seems the physics of the car is unstable. i was informed by a guide that this is caused by creating a car with overlapping bricks.

Overlapping bricks is not necessarily the problem. I've created quite a lot of cars that have bricks that overlap and never had problems with it. In my experience, overlapping bricks are only problematic when:
- The bricks overlapping are not actually connected to the vehicle, making them glitch out (which is a problem that can easily be fixed by simply connecting the bricks)
- The bricks overlapping are part of a non-static actuator. Sometimes it happens that a moving part (such as a door) glitches out because of two bricks colliding.
__________
I have tried your vehicle, but it indeed sharply turns to the left now. It might just be a problem with how tyres work in Brick Rigs currently, but I am not sure.

[Stake From JateFarm]

Alright so after looking at it for a while, I think I have a hypothesis. Here are some things to note:
-I checked the semetry of the car, every part has a corrosponding part on either side.
-I checked the material semetry which is even and does not contribute to the problem.
-I checked the tire air pressures and they are semetrical.
-I checked for overlapping bricks and bricks that would interfere with wheel function and there are none that do.
-I checked the car's behavior with and without the downforce and brake fins.
-I checked the car with parts removed from the wheel wells.

I also have some suggestions:
-The bottom of the car is made of a lighter material (carbon fiber) than the top (aluminium) which should be reversed; all cars should be bottom heavy to maintain stability.
-The gear ratio I believe is a bit to high for the wheels to act appropriately in this game so maybe you should tone them down a bit.

However, even after I switched out the engine to a much slower one, the car still seems to be turning after a certain speed. I played with the weight distribution, engine placement, and aerodynamics of the body and have concluded that when the car is heavier in the back than the front, it suffers worse from this effect. Likewise, when I made the front half out of tungsten and the rear half out of foam, it drove much better yet still turning to one side a bit.

Then, I looked it over with the Air Resistance Debug overlay on (an option in the settings) because why not; the car relies on air resistance for performance. If I understood the overlay correctly, it seems the red diamonds are surfaces affected by the resistance and the green lines are pockets of low air pressure behind those surfaces. From what I could gather from your car, it seems there are a lot of "green lines" coming from the top of your car as if there is low pressure above it; the opposite of what it is trying to achieve. In short, it seems like the car is gliding across the ground because it wants to take off. I am not sure of a fix for this as the thing seems like it would only build downforce but it may be worth looking into.

[Stake From JateFarm]

It is also worth noting that going into slow-mo eliminates pretty much any problem associated with the car turning on its own. Subsequently, the low pressure green lines also disappear on the top of the car. This may be a calculation error by the game or just a bug with slow motion but its hard to be certain.

[Stake From JateFarm]

Upon further investigation, the effects seem to change drastically by dialing back slo-mo. I had the speed at around 0.02x when I started to test it and the car behaved normally up until the 0.5x mark (ironically, the default slo-mo speed setting). Any higher than that, the green low pressure arrows began to show and the car would lose control. I could regain control easily by slowing time back down to around 0.4x.

[JammyGamer]

ok thank you zGRIFFINz i will mess with the car a bit more to fix it

[StingerPanda]

I would mess around with the tire pressure, suspension, and gear ratio

[Stake From JateFarm]

Originally posted by StingerPanda:

I would mess around with the tire pressure, suspension, and gear ratio

I messed around with those for a bit and they did not seem to make much of a difference as I stated above.

[JammyGamer]

i have made some progress i have redesigned the cars insides and i made the frame from tungsten which helped alot
but it still steers to a side

[Lizzard]

Since I can't run the game at the moment, I have some tips:

Find the 1 or 2 parts at the very end of the car and select them.

Select each part connected to them in order (Shift - L I think?). If your car is symmetrical, each side should have an equal number of parts selected as you go. If this count gets thrown off, then you have an extra block hidden on one side and not the other. (Often happens when you "undo" placing a block and for some reason, the game just randomly teleports it around the garage.)

Save a copy of the car and then select the whole thing and make it all of the same, (heavy) metal material, to test to see if you have any blocks in your initial car that may not be the right material.

Select your car and then move it around the garage to test for loose parts. If there are any loose parts, they'll be left behind when you move your car.

A bit more tedious... select a part, then "B" to select each of the same part type. Inspect each highlighted part to see if they're all connected where they should be and to make sure you don't have any odd pieces hidden around. Do this for each unique brick type you built it with.

Finally, start stripping parts off your car until you get it stable and work your way back up.

And... overlapping parts always try to push themselves apart. It doesn't matter in static pieces, but moving pieces do. If you have any kind of non-static actuator on the car (hinges, headlights, etc.), then overlap could always be a factor, regardless of where you place it.