General suspension balance - have we been fooled?

[sucahyo]

As well the SR should be lower and NOT equaL to the SRB.

Are these from experiment or real life ?

 

[TeamQuick]

Are these from experiment or real life ?

From both real life experience, and MASSIVE GT4 tuning experience.

 

[sucahyo]

From both real life experience, and MASSIVE GT4 tuning experience.

Had you ever try using 1/1 1/1 damper or 10/10 10/10 damper? which is your preferred low value or high value, or you never use both?
I do some bump test on GT2, on bumpy test track corner, 20/20 spring, 1/1 1/1 damper on R34 vspec feels the same as 14/14 spring 10/10 10/10 damper. I don't know which is faster because my skill suck.
Note that this is not final value, this is just early testing to choose the right spring rate. After I found the right spring rate I balancing the damper.

 

[TeamQuick]

Had you ever try using 1/1 1/1 damper or 10/10 10/10 damper? which is your preferred low value or high value, or you never use both?
I do some bump test on GT2, on bumpy test track corner, 20/20 spring, 1/1 1/1 damper on R34 vspec feels the same as 14/14 spring 10/10 10/10 damper. I don't know which is faster because my skill suck.
Note that this is not final value, this is just early testing to choose the right spring rate. After I found the right spring rate I balancing the damper.

I never use 1/1 1/1 or 10/10 10/10

I like this game because the phsics are as close to reality as a game can get. Ive spent ALOT of time tuning cars in this game, and have a List of neer 100 tuned cars. From this experience Im GLAD to find real wolrd physics work best, otherwise it would be just another racing video game and not a driving similator.

 

[sucahyo]

Well, I don't know much about real life physhics, so just test my GT2 with all extreme setting to find out what it offer
Like my recent brake bias test
Side by side braking duel on silvia, 1/24 trashing 24/18

 

[sucahyo]

I found a very nice explanation about damper. It says to use equal damper value as a start. And i think I wil continue using low damper because it says "The stiffer the shock, the less grip that tire will have".

NASCAR 2002 Chassis Setup Guide
former NASCAR short track driver & league administrator for SASCAR. I'm also a beta tester for NASCAR 2002.
The most important thing to remember regarding shocks, is that the stiffer the shock, the less grip it will have at the corner or end of the chassis.
Shocks do NOT control the amount of weight transfer in a corner. They will however control how quickly the weight is transferred.
Once you understand this concept of how shocks work, you will be able to use that knowledge to turn faster & more consistent laps.

Imagine a vehicle going down the highway at 50mph. Now imagine this vehicle slamming on it's brakes. What occurs in the chassis? When you slam on the brakes all the weight is transferred to the front of the vehicle & the nose of the car dives while the back of the car raises up. What are the shocks going through in this state? The front shocks are being compressed & the rear shocks are extending or rebounding.
Therefore if your having troubles getting into the corner, you would adjust the front shocks compression, & or the rear shocks rebound, since that's the stages of the shocks being utilized upon entry into a corner.

Let's take the same street vehicle & imagine it at a stand still in a parking lot. Giving the car full throttle what occurs? Just the opposite of what was explained above.
Therefore if your having problems exiting the corners under acceleration, you would look at adjusting the rebound of the front shocks, & or the compression of the rear shocks.
The easiest way to adjust shocks & get a feel for how they work are to adjust them as a 50/50 shock. Or in other words start out adjusting the compression & rebound equally the same. Say 9 compression 9 rebound, or 1 compression 1 rebound.
The reason many drivers do not feel a shock change is because they quickly forget the stiffer shock or shocks produce the least amount of grip. The stiffer the shock, the less grip that tire will have.

An overall softer spring package is usually preferred over a stiffer setup. With a softer setup though, you run the risk of having the car bottom out on the track. This can be cured by using a stiffer sway bar & or raising ride heights. Using softer springs will cause the car to roll over more in the corners. This may require using higher camber angles to compensate for the roll.
In general stiffer front springs will make the car tighter. Stiffer rear springs will loosen the car. Weaker front & rear springs will have just the opposite effect.

 

[sukerkin]

Hi Sucahyo, it's good to see that you have an active interest in understanding suspension tuning 👍.

There was a thread a while back that had a few alternative views on damper tuning and also contained some good links to previous discussions and websites. Take a look and see if it helps you at all:

https://www.gtplanet.net/forum/showthread.php?t=60369

 

[sucahyo]

Ah, yes, good link 👍.
I found some suspension fact on GT2, that hard spring is faster and high ride height is faster, if we combine that it became huge acceleration differences.