OK, you made me run numbers...
At sea level (for standard air density) they would need the following hp,
neglecting all other losses except what is required to overcome air drag...
Miata with top down.....424.8hp
Miata with hard top.....347.6hp
C5......................344.4hp
Considering drivetrain losses, rolling resistance (all contributors), etc.
they'd need probably anywhere from 10% to 40% (WAG) than that.
-Andy
--- Andy McKee <andrewmckee@yahoo.com> wrote:
> I wish them luck with the top down. With the hardtop they should (all else
> being equal) be able to come close to the Corvette. And power required to
> overcome drag goes up by the cube of velocity.
>
> -Andy
>
> --- Kevin Stevens <Kevin_Stevens@Bigfoot.com> wrote:
> > According to the numbers I found on the Miata.Net and C5 registry:
> >
> > Miata = .44Cd* x 17.7 frontal area = 7.788
> > C5 coupe = .29Cd x 21.7 frontal area = 6.293
> >
> > * top down, as the 200mph guys say they intend to run. It's .36 with a
> hard
> > top.
> >
> > That's 24% greater for the Miata, or 20% less for the Corvette, depending
> on
> > which side of the debate you're on. ;) Don't forget to square the
> velocity
> > before multiplying...
> >
> > KeS
> >
> > -----Original Message-----
> > From: owner-ba-autox@autox.team.net
> > [mailto:owner-ba-autox@autox.team.net]On Behalf Of Andy McKee
> > Sent: Tuesday, January 25, 2000 19:23
> > To: Kevin_Stevens@bigfoot.com; Keith Hearn; Scot Zediker
> > Cc: nokones@ix.netcom.com; Au H. Nguyen; Larrybsp@aol.com;
> > ba-autox@autox.team.net
> > Subject: RE: Larry Is Right
> >
> >
> > Yep, top speed is a "drag" race, but remember it is Cd*A. While the Miata
> > Cd
> > may kinda suck, I would suspect the cross sectional frontal area is quite a
> > bit
> > less than a Corvette.
> >
> > -Andy
> >
> > --- Kevin Stevens <Kevin_Stevens@bigfoot.com> wrote:
> > > In message <20000125144259.9240.qmail@web1101.mail.yahoo.com>, Scot
> > Zediker
> > > wri
> > > tes:
> > > > FWIW, Dealer Alternative in Colorado is working on a
> > > > 200-mph Miata. I don't recall which engine the car
> > > > has, but it is turbocharged. This same company also
> > > > sells a turbo kit that will put out around 250 hp to
> > > > the rear wheels and is completely street legal
> > > > (outside California, anyway).
> > >
> > > Great, they've got almost half the horsepower they'll need to get to
> > 200mph.
> > > Top speed is drag vs HP, and the Miata Cd is, as someone once said of
> > > motorcycles in general, "grotesque". A C5 has much better aerodynamics,
> > > will go +/- 170 mph stock, and needs another 150+ HP to get to 200mph.
> > >
> > > BTW, is that package called the LAT option, by any chance? ;)
> > >
> > > >A 15-psi turbo on a Miata puts out around 250 rear-wheel horsepower, and
> > > > reportedly can beat Vipers and their ilk in acceleration. And you
> > > > still have that wonderful Miata handling. I suspect one would give
> > > > most any Corvette a run for it's money, and then some. The trouble
> > > > is, it takes a driver with very good throttle control to handle
> > > > that much power in that light of a car. And many of those who
> > > > turbo/super-charge their Miatas are the sort that think that the
> > > > reason they're not fast driving a Miata is merely lack of power.
> > > > So you often see boosted Miatas being driven below their
> > > > potential. If you can't drive fast with 100 hosepower, you can't
> > > > drive fast with 200.
> > >
> > > Half the HP, 2/3 the weight... I'll put money on the Viper at the drag
> > > strip.
> > >
> > > >The 200MPH Miata project expects to have a completely street-legal
> > > > Miata (non-California that is) that'll do 200mph. They expect to have
> > > > it working this summer. Right now they're working on the aerodynamics
> > > > to keep it on the ground at that speed. :-o They're planning on using
> > > > a stock Miata engine with serious turbocharging.
> > >
> > > >See http://www.200mphmiata.net/
> > >
> > > Yeah. Don't see a lot of hard numbers there, but the site certainly is
> > > pretty. Now try here for an idea of what it actually takes (and costs)
> to
> > > get *close* to 200mph.
> > >
> > > http://www.lingenfelter.com/packages/pricing_stageI.htm
> > >
> > > KeS
> > >
> > >
> > Do You Yahoo!?
> >
> >
> Do You Yahoo!?
>
Do You Yahoo!?
|