rec.autos.simulators

by **Mr. Excitemen** » Sat, 12 Jul 1997 04:00:00

Well, I can see how Sierra's really done a great job with the physics
model. The car really handles like something 3400lbs. But I recently
converted an ICR track to N2. In a road course like that, there is of
course alot of accelerating. Then it came to me. These cars accelerate
no better than my daily driver! I did some performance testing and got
something like 0-60 in 6.7 seconds and 0-100 in 11.3 seconds with no
wheel spin. This can't be right. Then I proceeded to test the rest of
the engine's RPM range. No different. 30-90 in about the same amount of
time. The horsepower curve is linear. There is no peak torque and it
seem like it is "averaged out".

If they ever come out with N3, I't would be great to see an engine with
a real or believable horsepower curve. So you can actually feel the
"meat" of the power band.

Well regardless, I think N2 is still my favorite game and no other sim
makes you feel like your'e actually drafting inches behind Gordon and
bangin' doors with Iron Man.

by **Jim Sokolof** » Sat, 12 Jul 1997 04:00:00

>I did some performance testing and got
> something like 0-60 in 6.7 seconds and 0-100 in 11.3 seconds with no
> wheel spin. This can't be right.

You're right, that's not correct. Part of the problem is that the racing
motors need either clutch slip or wheel-spin to get the best 0-60 times.
Otherwise, the RPMs are too low, well below the "meat" of the powerband.

Here, I can assure you that you are completely wrong.

Here again, I *know* there is a cubic function for horsepower, which is
a pretty fair approximation of reality.

---Jim

by **Chris Cavi** » Sat, 12 Jul 1997 04:00:00

: Here again, I *know* there is a cubic function for horsepower, which is
: a pretty fair approximation of reality.
:
: ---Jim
:

Given that the horsepower curve is approximated with an algebraic
function, has anyone actually tried to find it? I think it would
be kind of fun to alter the characteristics of the power curve.
Race with a torque heavy curve with low peak power at Martinsville,
or a peaky no torque curve at Talladega.

Just a thought.

-Dirt-

by **Mr. Excitemen** » Sat, 12 Jul 1997 04:00:00

Jim,

Yes youre right, my mistake. I double checked again this time in higher
gears, and yes the car accelerates harder at higher RPMs. What I really
meant was the torque curve. It seems like the peak torque is as high as
you can rev the engine. If the engines were a bit more realistic, the

This is pretty much good enough for me, but I just wish the car would
accelerate more realistically in 1st.

Later,

Adrian

by **Nigel Nichol** » Fri, 18 Jul 1997 04:00:00

>Jim,

>Yes youre right, my mistake. I double checked again this time in higher
>gears, and yes the car accelerates harder at higher RPMs. What I really
>meant was the torque curve. It seems like the peak torque is as high as
>you can rev the engine. If the engines were a bit more realistic, the

>This is pretty much good enough for me, but I just wish the car would
>accelerate more realistically in 1st.

>Later,

>Adrian

I agree Adrian. In Nascar 2 the acceleration in 1st is rather
dull. If you try and avoid spinning the rears tires the
acceleration is sluggish. I believe that 70% or below throttle
and the tires won't spin.
If you have run "A Need For Speed" in the Viper for instance
the 1st gear ecceleration has a most realistic feel. The
engine sounds like it is working down low and the car gets up
and goes. If you rev the engine first then jam it in gear you
get the wheel spin. Also as the tires are slipping you tend to
have better control of the car, whereas Nascar 2 gets a little
too loose under tire spin. I too hope this is addressed in
Nascar 3. Still, Nascar 2 is the best racing sim in my
opinion.

Cheers
--

Nigel of Lakewood Motorsports
(Memeber of the Nascar Offline Racing Series)
Nascar Coruba & Coke Chevy
Hamilton
New Zealand

rec.autos.simulators

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