What is steer ratio 13-1 ??

[LazyBug]

I have a question about the steer ratio. So whats that mean if the car default steer ratio setting is 13-1 ??

Thanks for the concern & good day.

 

[April Dillon]

I believe that means the front wheels steer 1 degree into a corner each after 13 degrees of the steering wheel turning. Increase this ratio and you'll need to turn your steering wheel more in each corner.

 

[William Levesque]

Here we go:

13:1 means that you have to turn 13deg for the wheels of the car to turn 1deg. The higher the first number, the slower the steering is.

For example:

GT cars: About 11.5:1 to 15:1
Open Wheelers: 8:1 to 15:1 (Varies a lot depending on the type of Formula)

Furthermore:

MX-5: 900deg of rotation on your wheel + 15:1 ratio = 60deg steering lock (total amount of lock, 30deg on each side)

GT car: 540deg of rotation + 15:1 ratio = 36deg steering lock (18deg on each side)

rFactor for example takes only one side for steering lock. In netKar PRO, you don't adjust the steering lock directly, you do so by adjusting the steering ratio AND the degrees of rotation.

Anyway, it really is more simple than it seems,

 

[William Levesque]

Open Wheeler = F1, F3, Formula Ford, Formula Renault, etc...

It's NOT a gaming setting, it's a real life thing. It doesn't affect your wheel vs in-game wheel. It affects how fast the real car's steering is, how much you need to turn for the CAR'S wheels to turn 1 degree, not the in-game wheel.

 

[William Levesque]

This going to be hard....

 

[William Levesque]

Right.

It is already 1:1 with the game. As far as the ratio goes, if it was 1:1, it would be undriveable, only Karts use that, not cars.

Degree of rotation is adjustable in your profiler (what wheel do you have)

 

[Jorge Alves]

in nKP if you set 900deg of rotation (in logitech profiler and in nKP settings) you dont need to change the steering ratio in cars cause thats very close how they are in real life. Only if you think the wheel is too much or too less sensitive just adjust the steering ratio to your needs.

 

[Senad Subasic]

I think i understand what it mean now but i dont get why we need a setting like this. I mean why not just 1-1 so how much i turn my wheel is same with how much the wheel turn in game ?? Also what is open wheeler ??

Thanks again

Um. Just imagine what you're saying there. You turn your steering wheel 90 degrees, and your front wheels turn 90 degrees?

https://en.wikipedia.org/wiki/Steering_ratio

 

[Peter]

Um. Just imagine what you're saying there. You turn your steering wheel 90 degrees, and your front wheels turn 90 degrees?

https://en.wikipedia.org/wiki/Steering_ratio

Like a Bumper car, if you have a fwd and turn the wheel 180° you go reverse.

 

[William Levesque]

I give up

 

[Senad Subasic]

Yeah whats wrong with that ?? Too power steering ?? Too sensitive ?? To me its quite convenient cause i lazy to turn alot, at least thats how i play F1 2011, 45 degrees turn already quite enough even for a hairpin. May be this is not work in sim, i dont know

LOL. You don't see a problem with your front wheels turning 90 degrees to one side? That's pi/2 radians, if that paints a clearer picture.
Not that they can anyway, but just as an example of what 1:1 steering ratio would do.

I think there might be a language barrier here.

 

[LazyBug]

I believe that means the front wheels steer 1 degree into a corner each after 13 degrees of the steering wheel turning. Increase this ratio and you'll need to turn your steering wheel more in each corner.

So 1-1 mean front wheel move in game = steering wheel move ?? Why need adjustment like this by the way ??
Thanks first

 

[April Dillon]

A lot of it's down to driver preference. You'd probably want much more steering lock at a circuit like Monaco, and you also see it go up and down a bit with driver preference.

 

[LazyBug]

DFGT wheel. Nvm if its hard to explain, its ok.

 

[LazyBug]

Also if i set steer ratio to 1-1 and i set my wheel rotation = 90 degree then my full right / left turn should be only 45 degree not 90 i guess.

 

[LazyBug]

Trust me really i know what you guys talking about, i actually lol myself imagining two front wheel pointing full right or full left like this --

I do know its impossible

 

[Peter]

Not impossible

 

[Rhys Gardiner]

The reason 1:1 steering ratios are almost never used is a) because the car would be insanely responsive and hard to control when you screw up, and b) the tyres would likely scrub all the time! Karts, as said before, have a 1:1 ratio, and that's fine because they're slow enough for it to be a non-issue (and it's not like you really have much of a choice anyway), but when it comes to "proper" racing cars, you'll generally find that 12:1 or 10:1 is used the most - it gives good enough response while being gradual and predictable enough to keep the car under control and look after the front tyres.

The tightest steering ratio I've seen people can get away with is 8:1, and I find that horrible to drive.

 

[Rhys Gardiner]

double post

 

[LazyBug]

So i guess 1-1 steer ratio is not working for sim racing. Will test different ratio myself when i play nK-pro again.