Mercedes AMG F1 W04

[beelsebob]

Random thought, that I don't really see a clear rule about... Is it allowed to use different wheel rims between qualifying and the race? I assume so, because park fermé ends as soon as you leave the grid, so as long as you use the same rims in the first stint as you did in qually, that seems like you should be able to change. Any thoughts?

[Bomber_Pilot]

This was introduced in 2010

28.7 a) One specification of each of the following parts must be homologated prior to the first Event of the Championship season:
– survival cell;
– principal and second roll structures;
– front, rear and side impact structures ;
– front wheel;
– rear wheel.
Once homologated, changes to the these parts will only be permitted for clear safety or reliability reasons following written approval from the FIA.

If this still stands today, I don't think you are alowed to have two different sets of wheel rims.

[beelsebob]

This was introduced in 2010

28.7 a) One specification of each of the following parts must be homologated prior to the first Event of the Championship season:
– survival cell;
– principal and second roll structures;
– front, rear and side impact structures ;
– front wheel;
– rear wheel.
Once homologated, changes to the these parts will only be permitted for clear safety or reliability reasons following written approval from the FIA.

If this still stands today, I don't think you are alowed to have two different sets of wheel rims.

Ah, thank you. I was wondering if Merc could run a qualifying (make the tyre hot) rim, and a race one, but apparently not. Interesting that Merc must have presented a safety case to the FIA for their old rim being unsafe.

[Bomber_Pilot]

@beelsebob I am going through current F1 tech reg, and I am not sure if my previous post is valid for this year since I cannot find anything about homologation for this year so far. The chasis deffinetly isn't homologated, since you can build an entirely new one, as long as it passes the chrash tests. I am not sure about the wheel rims though.

[Richard]

That homolgation clause no longer exists, which is why team can adjust the chassis & wheels mid-season.

[SectorOne]

It used to be no homologation, then there was, now it´s gone.
Ferrari had a rim that nobody else had and was alone the whole season with it, year after they removed the homologation.

Mercedes has introduced new wheel rims mid season this year.
If you can change during a race i can´t find anything that says you can´t.

[Steven]

It used to be no homologation, then there was, now it´s gone.
Ferrari had a rim that nobody else had and was alone the whole season with it, year after they removed the homologation.

Mercedes has introduced new wheel rims mid season this year.
If you can change during a race i can´t find anything that says you can´t.

Indeed, I believe the only limitation on changing parts is that the new item may not be heavier than the previous one. This was originally introduced for nose cone changes, but may apply to wheels as well.

[krisfx]

This was introduced in 2010

28.7 a) One specification of each of the following parts must be homologated prior to the first Event of the Championship season:
– survival cell;
– principal and second roll structures;
– front, rear and side impact structures ;
– front wheel;
– rear wheel.
Once homologated, changes to the these parts will only be permitted for clear safety or reliability reasons following written approval from the FIA.

If this still stands today, I don't think you are alowed to have two different sets of wheel rims.

Ah, thank you. I was wondering if Merc could run a qualifying (make the tyre hot) rim, and a race one, but apparently not. Interesting that Merc must have presented a safety case to the FIA for their old rim being unsafe.

Afaik there's a specification for the rim material as in a specific type of Magnesium, so wouldn't it be quite hard to control the heat with them?

[SectorOne]

I believe they can only use two types of Magnesium.

But i think what Belse is talking about is having one wheel with the heatsink and one without it depending on what compound is going on to the car.

[beelsebob]

I believe they can only use two types of Magnesium.

But i think what Belse is talking about is having one wheel with the heatsink and one without it depending on what compound is going on to the car.

Exactly.

[krisfx]

Ah okay,

I didn't know things like that could be done within the material spec, my bad

[heimana]

updates for singapour?

[Mika1]

updates for singapour?

And Korea.

[Livingthedream]

Re: Mercedes AMG F1 W04
by SectorOne » 14 Sep 2013, 13:17

I believe they can only use two types of Magnesium.

But i think what Belse is talking about is having one wheel with the heatsink and one without it depending on what compound is going on to the car.


Nice insight to the heat sink here
http://f1times.co.uk/mobile/display/08027

[GrandAxe]

Merc is most likely creating a heat pump between the brakes and the inflation gases in the rear wheel. Paradoxically, using the heat from the brakes as the energy source to cool the rear tyres.

Genius.