Lexus developing million dollar super car - report

[Dark]

Originally Posted by Dimman

I think faster is generally better, especially given the same volume of flow. But too fast leads to frictional losses that can reduce flow. Plus there is something about sonic choking that I don't understand yet.

Always about compromise.

But overporting chasing a volume flow number (just CFM) with no regard to the velocity is what leads to shitty response on NA motors that don't make power til really high rpm. The trick is to increase flow AND velocity which is what separates the pro porters from amateurs. Or at least increase flow and minimize velocity losses.

Aftermarket domestic porting and motorcycle porting is far more advanced than the typical import performance porting.

But if you need to increase more flow (and velocity), you're going to need more fuel to mix with air. Oh... I got it.

[serialk11r]

Hmm so pictures I can dig up of the 1LR-GUE seem to indicate that the injectors are quite a bit downstream from the throttle bodies, so it might not be it :/

[Levi]

What is wrong? I want an LFA but can't afford it. I'll even more want an LFA II but will even less be able to afford it, because I guess they'll sell them only to LFA owners.

But we have GT86, we'll have Supra, LF-LC (called SC), IS-F Coupé. What more can one need? Anyway all those crying about a Supra have not understood that the Twin-Turbo I6 is dead. F*cking hybrid is the future. Even the new Carrera GT, 918 Spyder, is a f*ucking 4WD hybrid. I hate Prius. NA and FI FTW, but only hybrid is waiting for us, just look at the NSX II.

[Dark]

Originally Posted by Levi

What is wrong? I want an LFA but can't afford it. I'll even more want an LFA II but will even less be able to afford it, because I guess they'll sell them only to LFA owners.

But we have GT86, we'll have Supra, LF-LC (called SC), IS-F Coupé. What more can one need? Anyway all those crying about a Supra have not understood that the Twin-Turbo I6 is dead. F*cking hybrid is the future. Even the new Carrera GT, 918 Spyder, is a f*ucking 4WD hybrid. I hate Prius. NA and FI FTW, but only hybrid is waiting for us, just look at the NSX II.

I think hybrid is just a motel we stay on the journey to the future. LOL Electric is the real future here.

[Dimman]

If this new supercar happens, and is tied into the LeMans car they're running as much as the LFA was tied into F1, it will be hybrid.

The system they are using in LeMans is pure electronic, with capacitors I think rather than batteries, no flywheel system.

[serialk11r]

Originally Posted by Dimman

The system they are using in LeMans is pure electronic, with capacitors I think rather than batteries, no flywheel system.

Hell to the yes. Don't want to turn this into an energy argument, but liquid chemical fuel is by far the easiest way to store energy. We already have lithium ion doped ultracapacitors coming to the market soon, at lower cost than more sophisticated graphene and nanotube and what not stuff, which matches the energy density of a lead acid battery and completely blows literally anything else out of the water in terms of power density. Did I mention mechanical heat engines are amazing? Race engines with no waste heat recovery (obviously) have amazingly high thermal efficiencies considering their turbine like power to weight ratio, while being efficient across a vast range of speed.

Just looking at some of the stuff that's coming to market soon, which are easily getting about 0.1MJ/kg, 10kg of ultracapacitors would give you 1MJ storage capacity (enough to get a 1 ton car up to 100mph from a dead stop), and it would be able to discharge quick enough for any sort of electric motor you could throw at it.

A race car uses most of its energy on the brakes, recover some of that, and use the energy to go faster instead! Storage time doesn't matter either, you're using power 90% of the time when you drive or more.

[quik1987]

Porsche 918 competitor?

[Levi]

Originally Posted by quik1987

Porsche 918 competitor?

If so, they don't need to build the LFA II.


Porsche 918 Spyder < Porsche Carrera GT (best P-car ever)

[Dimman]

Originally Posted by old greg

In the OEM production world, yes very much so. And yes, they use very big hydraulic presses with very expensive dies that wear out and need to be replaced.

In your FSAE analogy, it depends. Fishmouthing the tubes by hand is very time consuming and labor intensive, it's easily a month-long process for an FSAE team under normal circumstances. These days a lot of teams are outsourcing that to companies like Cartesian Tube that CNC bend/fishmouth the tubes based on solid models with about a ~1 week turnaround time if they aren't too busy. Assuming you have all of your jigs ready you could go from the UPS truck to a completed spaceframe in just a day or two.

Way off topic but do A-Mod Specials have a minimum weight? I found track, wheelbase, aero, and B-Mod stuff in the other regs, but nothing on weight...

[iff2mastamatt]

Well, Toyota should make the car at least be profitable if they decide to sell it for $1M.

[Dark]

Originally Posted by iff2mastamatt

Well, Toyota should make the car at least be profitable if they decide to sell it for $1M.

I think they will be. The development of LFA was 9 years, it took them a lot of money.

[old greg]

Originally Posted by Dimman

Way off topic but do A-Mod Specials have a minimum weight? I found track, wheelbase, aero, and B-Mod stuff in the other regs, but nothing on weight...

900lbs w/driver iirc.