2018 F2 car vs 2019 Super Formula car

[JordanMugen]

The 2019 Super Formula car seems remarkably similar to the 2018 F2 car... Does anyone happen to know what the relationship is between the two cars?

To me, it almost seems like they are the same basic car, aside from some minor aerodynamic differences (slightly different fins, some slightly different cooling vents on the sidepods etc)... I wonder if they use identical tubs?

Would that be fair to say they are closely related cars? [ Aside from the installation of a completely different power unit inside of course! ] I wonder if the SF car makes more downforce, or if they are similar? I haven't been able to find a rear pic of the SF car to compare it to the (large!) venturi tunnels of the F2 cars.

I note with interest the 2018 F2 car seems to use the wider 2017-spec F1 floor width, even though the overall car remained at 1.9m wide like the old GP2 car. That should help with underbody downforce, likewise the SF car seems to use the same dimension for the floor width.

F2 car

F2 car detailed high-res pics: http://www.thedrive.com/start-finish/13 ... r-at-monza

SF car

[Sans halo in this test version and they have tested it without halo too, but you can't imagine they would dare race an all-new formula car without a halo w.r.t. FIA requirements and liability etc.]

[jjn9128]

Can't see what you're on about... completely different concepts front to back

If you're serious about your first point - both are designed and delivered by Dallara. I imagine they use a common chassis as both series have to conform to FIA standards. They do similar speeds as well so the crash structures can be shared.

I think the super formula car produces a bit more downforce than the F2, but don't quote me on that - they also use proper tyres not Pirelli's so the cornering is faster anyway. AFAIK both are flat floor + diffuser not venturi's - the diffusers are much longer than F1 though.

The rear from testing - complete with the new rain lights.

Diffuser from the side

[Maritimer]

Is that the Indycar front wing? Looks familiar.

[jjn9128]

Is that the Indycar front wing? Looks familiar.

The flap shape on the super formula car is similar - but the wings profiles and chords look different. The SF car wing is also swept like an F1 car, while the Indycar wing isn't.

[Godius]

SF19 @ Suzuka:

Nakajima racing


B-Max Racing/Motopark

[jjn9128]

SF19 @ Suzuka:

Nakajima racing
https://pbs.twimg.com/media/D0oyO7YUwAAnanY.jpg

B-Max Racing/Motopark
https://pbs.twimg.com/media/D0pVCGvVAAAbcJg.jpg:large

https://i.redd.it/nbgxy88mzoj21.jpg

Is that last one Ticktum? Continuing in his quest to fail to get enough super-license points for F1

[roon]

[Godius]

Times of SF testing @ Suzuka. The new cars are quite fast, they are a bit comparable to the 2014-2016 f1 cars but slower. Rosberg's pole lap in 2014 was a 1:32.506. Fastest f1 race lap in 2015 was 1:36.145 on lap 33 (Ham).

[Juzh]

gasly did 1.35.5 in 2017

[denisjp]

I note with interest the 2018 F2 car seems to use the wider 2017-spec F1 floor width, even though the overall car remained at 1.9m wide like the old GP2 car. That should help with underbody downforce, likewise the SF car seems to use the same dimension for the floor width.

The old GP2/F2 car was 1.8m wide.

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[Zynerji]

Can't see what you're on about... completely different concepts front to back

The front wing end plates are nearly identical, other than the notch on top of the SF version.
They seem to me to be off a shared conceptual base.

[jjn9128]

Can't see what you're on about... completely different concepts front to back

The front wing end plates are nearly identical, other than the notch on top of the SF version.
They seem to me to be off a shared conceptual base.

You think?

[Zynerji]

Can't see what you're on about... completely different concepts front to back

The front wing end plates are nearly identical, other than the notch on top of the SF version.
They seem to me to be off a shared conceptual base.

You think?

I do. It looks like they just reprofiled the top edge. Also looks like the nose cones and front suspension components are interchangeable.

Probably wing elements, front floor, sidepods, rear wing only difference.

Fast cars btw...

[SF Engineer]

I have not seen the the aero manual for the F2 car, so I can't comment on downforce levels or efficiency but I can say the following:

1. The SF19 has a regulation weight of 670kg (+10kg vs SF14, -85kg vs F2, -70kg vs Indy (road course), -70kg vs F1)
2. SF Tires are larger than F2 (280/360 for SF19 vs 245/325 for F2)
3. Front & Rear tracks are wider on the SF19 and the wheelbase is shorter
4. Motion ratios, etc are differernt
5. SF19 has a titanium halo, F2 is steel
6. SF engine power is unknown but in the range of 550-600 bhp (fuel flow restricted), F2 is reported to be 620, so likely a little more than SF with it's current fuel flow limits
7. SF uses an engine overtake system (increased fuel flow) and has no DRS, F2 uses DRS
8. SF has power steering
9. Drivers I have run in the SF14 unanimously say that car felt quicker and more responsive than the previous and current F2 cars. Acceleration is sharper and cornering is quicker (mainly due to weight and tire grip I suppose), top end speed the F2 is a bit faster (could be down to aero settings as well, lots of factors to consider). The SF19 is basically a more aerodynamically efficient SF14 with improved safety, so I doubt the comments would change much.

[factory_p]

5. SF19 has a titanium halo, F2 is steel

Incorrect, F2 has the titanium halo. F3 international has the steel halo though.