Spray paint bubbles on Ferrari F150

[bot6]

Except the parts had not been mounted yet.

As far as orange peel goes, that's the finish you get when you don't know how to handle a paint gun (like when you don't mix, thin and filter your paint for example). I doubt they don't have a single decent painter at Ferrari.

After the shark fin, maybe we have the shark skin: little abrasive bumps on the bodywork to reduce drag?

[HampusA]

Except the parts had not been mounted yet.

As far as orange peel goes, that's the finish you get when you don't know how to handle a paint gun (like when you don't mix, thin and filter your paint for example). I doubt they don't have a single decent painter at Ferrari.

After the shark fin, maybe we have the shark skin: little abrasive bumps on the bodywork to reduce drag?

Doesn´t matter, orange peel doesn´t look that irregular.

As far as orange peel goes, Almost every automaker are using this technique, are you claiming that the likes of BMW and Volvo can´t handle a paint gun?

It´s just a different technique, why i have no idea but it´s not done by accident as far as car manufacturers go.

This however is not orange peel.

[HampusA]

Paint reacting to the extreme heat,


Paint that is not reacting to extreme heat,


Orange peel,




Orange peel is really subtle when you move away from it, it´s when you get close that it´s becoming apparent.

More orange peel,




Not really noticable you see.

[HampusA]

Notice how regular it is across the paint, and very fine even though it´s rough compared to smooth paint.

,



And to compare,


Not orange peel..

[bhall]

Either way, at the end of the day, it's still just paint.

[HampusA]

Agree, and it´s on an F1 car so i couldn´t care less even if they started paint the cars with a roller from here on.

[mantikos]

PICTURES[/img]

Not orange peel..

I love your Ferrari M3...
oh wait...

[bhall]

I'm going to unabashedly hijack this thread with a question of equally minute importance. Or maybe it's not; we shall see.

What effect, if any, does all the rubber, road grime, bugs, etc., have on an F1 car's performance as it's collected on the car throughout a race?

It seems like the cars are dirtier at the end of a race this season than in recent years, no doubt due to the silly putty Pirellis. Or maybe I'm just noticing it all for the first time.

Any thoughts?

[marcush.]

I'm going to unabashedly hijack this thread with a question of equally minute importance. Or maybe it's not; we shall see.

What effect, if any, does all the rubber, road grime, bugs, etc., have on an F1 car's performance as it's collected on the car throughout a race?

It seems like the cars are dirtier at the end of a race this season than in recent years, no doubt due to the silly putty Pirellis. Or maybe I'm just noticing it all for the first time.

Any thoughts?

without a doubt the debris will potentially clog the brakecooling ducts -as we have seen some teams already sucrifice outright duct performance to avoid marbles getting trapped in the scoops by introducing some mesh .
The same issue with the radiators..the marbels will find their way into the cooling duct and could clog the radiator core-reducing cooling performance.So you might need to introduce a mesh in front of the core to improve the situation-potentially at the loss of some outright cooling performance.
The worst issue of copurse is the tyres picking up those marbles! wich leads to unbalance -the driver gets unsettled by the vibrtations -thinking he has a puncture or something is wrong with the car .Of course the vibrations will put bigger loads and more fatigue into the car reducing it´s lifetime .so it will inevitably affect your reliability margin.
Trapped marbles could collect in calipers ,especially during tyre change ,leading to trouble with wheelfitting and fire .especially with bottom mount caliper.
and that´s just the start ...

[Richard]

HampusA - I see we both have Hankook Evo V12 tyres on our cars!

[HampusA]

Not my car, pictures are just there to prove a point and to showcase the "orange peel" manufacturers have on newer cars
Your an M3 driver or just share the same tires?

mantikos: Gobble-Gobble?

[Richard]

Just the same tyres, on an SLK in my case

[PNSD]

I'm going to unabashedly hijack this thread with a question of equally minute importance. Or maybe it's not; we shall see.

What effect, if any, does all the rubber, road grime, bugs, etc., have on an F1 car's performance as it's collected on the car throughout a race?

It seems like the cars are dirtier at the end of a race this season than in recent years, no doubt due to the silly putty Pirellis. Or maybe I'm just noticing it all for the first time.

Any thoughts?

About 2/3 years ago RedBull did a private study on the effects of leading edge surface roughness... With applications to going of onto the gravel, coming back on track with all the grime, and stones that come with gravel.

We all know surface roughness is one of the factors leading to transition... for an aerofoil, the performance in terms of L/D suffers, and the transition Re is lowered.

We've seen Mclaren use gauze type meshes on their brake ducts to prevent ingestion of marbels (I assume!).

[bhall]

About 2/3 years ago RedBull did a private study on the effects of leading edge surface roughness... With applications to going of onto the gravel, coming back on track with all the grime, and stones that come with gravel.

We all know surface roughness is one of the factors leading to transition... for an aerofoil, the performance in terms of L/D suffers, and the transition Re is lowered.

Thanks. That's mostly what I was asking about with my question. And it absolutely makes sense that it would have a detrimental effect on performance. But, I didn't know if those effects were meaningful or not.

I'm continually struck by the attention to detail exhibited the the competitors in this sport, even if it sometimes leaves me scratching my head.

Well, I got something from this thread. Three cheers for paint texture!

[PNSD]

Like anything with boundary layers, surface roughness is still something where there is alot to learn. I knew of a study going on that involved strategically placed rivets on an aircraft's exterior that reduced boundary layer growth just before the onset of transition.

You would think the opposite, but the said aircraft manufacturer found some interesting things. (Now I wish I remember the said 'ideal' distance between rivets!).

I believe there are a few reports on boundary layer growth in the wake of an impinging jet onto a flat surface, and how different surface types effect the growth.

In relation to an F1 car, I think the effect isnt too detrimental. The effects are really only felt on aircraft wings with larger surface area's where lift and drag are key parameters for fuel consumption and cost. As mentioned I think the primary concern would be bits getting in places you do not want.