rec.autos.simulators

by **Dave Henri** » Wed, 06 Jun 2001 02:26:57

This morning I've been watching a repeat of the Grand Am Watkins Glen 6
hour race.(thanks Speedvision)
Several of the cars run a V-10 Judd engine. I think that used to be a
Formula 1 based powerplant. It sure sounds like what I traditionally
associate with F1 engines. The modern Ilmors and Ferrari's and BMWs, while
certainly powerful, sound tinny. The Ferrari 'used' to scream back when it
was a V12, but now the high pitched whines, espeicially from the Ilmor
Mercedes, are almost distracting.
In kinda of a side note...the IRL cars, have changed somewhat, they used
to have a deep braap sound, now they resemble the Turbo cars of Cart
somewhat.
dave henrie

by **rik anthra** » Wed, 06 Jun 2001 02:56:00

Really?
All I can hear is the rev-limiter.

by **Stephen Smit** » Wed, 06 Jun 2001 05:03:29

Hi Dave,

Most of the IRL engines are now using flat (180-deg.) cranks, which changes
the engine 'note'dramatically.

--Steve

by **John C. Curlet** » Wed, 06 Jun 2001 13:36:11

Thanks for the info steve ,i've been wondering about the IRL cars engine
note too ,much higher pitched then when they started.You ever noticed how
the different the McLaren sound's compared to the rest of the V-10's?

> Hi Dave,

> Most of the IRL engines are now using flat (180-deg.) cranks, which
changes
> the engine 'note'dramatically.

> --Steve

> > This morning I've been watching a repeat of the Grand Am Watkins Glen
6
> > hour race.(thanks Speedvision)
> > Several of the cars run a V-10 Judd engine. I think that used to be a
> > Formula 1 based powerplant. It sure sounds like what I traditionally
> > associate with F1 engines. The modern Ilmors and Ferrari's and BMWs,
> while
> > certainly powerful, sound tinny. The Ferrari 'used' to scream back when
> it
> > was a V12, but now the high pitched whines, espeicially from the Ilmor
> > Mercedes, are almost distracting.
> > In kinda of a side note...the IRL cars, have changed somewhat, they
used
> > to have a deep braap sound, now they resemble the Turbo cars of Cart
> > somewhat.
> > dave henrie

by **briGu** » Wed, 06 Jun 2001 14:03:30

That's more to do with the exhaust setup than the crank order. There's
an excellent article at
http://www.speedvision.com/pub/articles/racing/01formula1/010502a.html
that explains what McLaren is (probably) doing. The article is by Steve
Matchett, ex race mechanic for Benetton...

by **Matt Lanze** » Wed, 06 Jun 2001 20:09:33

> In kinda of a side note...the IRL cars, have changed somewhat, they used to
> have a deep braap sound, now they resemble the Turbo cars of Cart somewhat.
> dave henrie

I dunno 'bout that... When I was at Indy last week they sounded about half-way
between a Cup car and a ChampCar.
When the IRL first started it was using 4.0 liter motors, but have since
reduced displacement to 3.5 liters. I'm sure that's got alot to do with the
pitch change as well...

Warlock!

by **Stephen Smit** » Wed, 06 Jun 2001 21:29:07

Yes, when you go to a 180-deg. crank, it changes the firing order
completely, which means you need new exhaust plumbing.

> > Thanks for the info steve ,i've been wondering about the IRL cars engine
> > note too ,much higher pitched then when they started.You ever noticed
how
> > the different the McLaren sound's compared to the rest of the V-10's?

> That's more to do with the exhaust setup than the crank order. There's
> an excellent article at
> http://www.speedvision.com/pub/articles/racing/01formula1/010502a.html
> that explains what McLaren is (probably) doing. The article is by Steve
> Matchett, ex race mechanic for Benetton...

by **Rick Baumhaue** » Thu, 07 Jun 2001 02:13:14

Nope - as mentioned up-topic, it's the new 180degree crank. I think it was
introduced at the 2000 Indy 500, where some cars had it and others didn't .
HUGE improvement in the sound of the cars.

Rick

> > In kinda of a side note...the IRL cars, have changed somewhat, they used
to
> > have a deep braap sound, now they resemble the Turbo cars of Cart
somewhat.

> > dave henrie

> I dunno 'bout that... When I was at Indy last week they sounded about
half-way
> between a Cup car and a ChampCar.
> When the IRL first started it was using 4.0 liter motors, but have since
> reduced displacement to 3.5 liters. I'm sure that's got alot to do with
the
> pitch change as well...

> Warlock!

by **Paul Laidla** » Thu, 07 Jun 2001 05:41:27

All F1 engines have a flat plane crank, he meant the Ilmor engine sounds
different to all the other V10 flat plane crank F1 engines because they
plumb the
exhaust up in a different way to everyone else.

That article is quite interseting BTW.

> > > Thanks for the info steve ,i've been wondering about the IRL cars
engine
> > > note too ,much higher pitched then when they started.You ever noticed
> how
> > > the different the McLaren sound's compared to the rest of the V-10's?

> > That's more to do with the exhaust setup than the crank order. There's
> > an excellent article at
> > http://www.speedvision.com/pub/articles/racing/01formula1/010502a.html
> > that explains what McLaren is (probably) doing. The article is by Steve
> > Matchett, ex race mechanic for Benetton...

Paul

by **Episcopu** » Thu, 07 Jun 2001 16:35:04

Try at least going to a real F1 race before giving an "expert"
assessment of it's engine sounds. TV does not come even close to
being able to demonstrate the outrageous sonic power of these
powerplants. When you're on the circuit the engine has a booming
lower end which combined with the screaming wail of the higher end
overwhelm your auditory senses, get under your skin and make the hair
stand on the back of your neck. In no way does it ever sound "tinny".

The only thing that does is the sound of the car engines for the
junior single seaters and GT series that usually run as a prelude to a
F1 race.

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