rec.autos.simulators

I'd expect to be seeing V8 supercars around 280kph - 300kph down Conrod.

Cheers,
Rod.

David Corless

"Mobsy" >

  Ok a short comparison:
Aussie V8 Supercar 5.0L 620hp top speed approx 300+kph
Trans Am V8 5.1L 640Hp top speed 290kph
Winston Cup Stockcar: 5.8L 725HP top speed 323kph
2001 Dome Judd LeMans LMP 900 top trap speed 335kph.

 Without knowing the in/outs of the hp generation in Nascar Heat, it would
'appear' as if the Aussie V8's are using a Nascar engine with a a much
lighter chassis.  The speeds I got with a full tank in the Aussie car rivals
that of the fastest LeMans protoypes on the chicaned Musanne(although the
air restrictions on the LMP cars probably means the Aussie Supercars have
more HP)
dave henrie

Yeah, they can just hit 300kph at the end of Conrod straight if they
are really going well in qualifying, but in the race they're normally
arounf 270 or 280 kph.

On other tracks without such a long straight they usually reach around
230 to 260 kph or so.

Rafe Mc

Luke
-=87=-

GP500 was arcade? Blimey....seemed as tough as old nails to me!

The aussie v8s are not a nascar engine. The crummydores run a 4980cc (308cu
inch) chev small block, and the fords run a 4949cc(302cu inch) ford engine.
From what I understand, nascar engines are larger (about 358 cubic inches or
about 5800cc) and I vaguely remember them racing at bathurst one year and
getting higher tops speeds than the aussie cars (despite the fact that they
had the brake about a kilometre before them)
The aussie v8s weigh either 1300 or 1350kg (I can't remember which), and the
nascars weigh more like 1500kg.

I doubt that the Aussie v8s have much more power than the Le-Mans cars -
they are running 5L pushrod v8s, and there is only so much you can do with
1960s technology.

David Corless

"David Corless" > >
  Agreed, the numbers I quoted were from real-world press sites that gave
either estimates or actual outputs...Thus the speed of the Aussie car is
probably slightly higher than the American Trans Am even tho the TA car has
more HP.  I suspect the higher top end derives from the fact no Trans Am
track has a straight as long as Conrod so they have optimised downforce as
opposed to top speed.
    What I meant by saying the Aussie car had a Nascar engine was....  that
IN the mod, the characterics of the speeds was such that the Aussie V8 is
way to fast.   I was guessing the modmakers, rather than use actuall
horsepower figures, had used #'s that were very close to the original
outputs that MGI used for it's simulated Stock Cars.(hence my confusing
reference to Aussie cars using a Nascar motor.)  I should have clarified
that I meant the simulated V8 Supercars modeled in the mod were overpowered.
  I have emailed one of the modmakers, he said they had lots of problems
getting the cars to behave and I suspect they made these compromises to
acheive some degree of drivability.
  As far as the 60's tech being overwhelmed by modern engines...make a V8
big enough and the tiny turbos will still be humbled.  I remember some 10 or
15 years ago, a magazine compared a Turbocharged Imsa car against a boxy
Winston Cup car on an oval.  The Cup car won.  Who knows what a similar
comparison today would produce, but pushrod doesn't always =slower. :)
  now back to my original thesis...I was hoping to convince the V8 modders
to alter their physics to more closely match the real-world output, but they
do not, it is their project and I won't go against their wishes.
  on to other topics.
dave henrie

That 1960's technology can still pump out the fastest accelerating
passenger vehicle made by man so it can't be all that bad!

Cheers,
Rod.

David

Luke
-=87=-