Raikkonen performance on R30

[thisisatest]

Roughly, what is the suspension setup?

There is an outer spring specified but no outer damper.
There are center dampers but no center spring. What is a center system?
There are roll dampers.

That is the possibility of a three types of dampener systems per each end of the car (not just three dampers). What would that look like?

Brian

i mentioned this earlier, no response. i figure a roll damper would be mounted across the car, but "diagonally" so one end is mounted to the front of a bellcrank connecting to the suspension push (or pull)rod, the other end to the rear of the other bellcrank. roll is the only one that has a damper and a spring (anti-roll bar). no mention of an inerter, although it may be there and it's being referred to as something else.

[Belatti]

[
Also, the castor value, that can't be degrees, right? To my mind 12 degrees seems extreme.

No its not. I setup F Renault cars with "only" 5 or 6 because they cant use self-locking differential. Its not uncommon to see 11º in F3 cars.

FWD racecars like WTCC can use more than 15º

[Belatti]

Both. I'm intrigued though. What benefit would you get from having rear toe in; and toe in at the rear with toe out at the front?

That setup is common in RWD racecars. There are many reasons, like tyre heating, slip angles needed and steering response, braking stability, etc.

[Caito]

[
Also, the castor value, that can't be degrees, right? To my mind 12 degrees seems extreme.

No its not. I setup F Renault cars with "only" 5 or 6 because they cant use self-locking differential. Its not uncommon to see 11º in F3 cars.

FWD racecars like WTCC can use more than 15º

Sry OT, but.. what does LSD diff has to do with caster??

Thanks.

[Belatti]

In a car with a lot of caster, when the wheels are turned, the inner front goes down relative to the chassis and the outer front goes down. Think about what does the inner rear "see" of all this happening at the front...

[dan]

Both. I'm intrigued though. What benefit would you get from having rear toe in; and toe in at the rear with toe out at the front?

rear toe in is for rear stability and toe-out sharper turn in I think
a rwd road car with 0 rear toe will wander in a straight line and be a lot looser on corner entry, harder to trailbrake and tip in

1/2mm seems like hardly anything I would think those specs are near enough a neutral setup for a f1 car or any formula car?

suspension on road cars the toe definitely changes I would think so to on an F1 car?

[PlatinumZealot]

Interesting. He's worked; let's not forget; with JB; Hamilton; Nando and Hakkinen

There are different facets of intelligence and different people admire different facets.

[raymondu999]

Interesting. He's worked; let's not forget; with JB; Hamilton; Nando and Hakkinen

There are different facets of intelligence and different people admire different facets.

He might not even be talking about intelligence. The word he used IIRC was brilliance. He could be talking of Kimi as a brilliant driver, rather than an intelligent one. But my point being for someone who's worked with Hakkinen, JB, Hamilton, Alonso that's high praise indeed.

[SLC]

The PPS is the hydraulic system which links the rear and front suspension (as in they are physically connected with hydraulic lines). I'm no dynamics expert but it improves the ride over bumpy surfaces (when the rear is perturbed it stiffens the front up, I think).

[Richard]

seems someone got pretty good photo from todays test

Thank you!

[mx_tifoso]

I've never seen the Iceman smile so much, hopefully that translates to positive results with the R32.

[Donuts]

09:30 @StrangAutosport with some more Raikkonen analysis: "During his run in the 2010 Renault, two weeks ago, taking into account fuel correction, he was within two tenths of his best lap on his first flyer."

[raymondu999]

Actually I heard Alan Permane say a while back that they did a quali simulation, plopped in a bit of fuel, and calculated the estimated fuel effect. Raikkonen produced that lap time, down to the hundredth (thousandths off)