rec.autos.simulators

Technology Advances - GPL vs Everyone Else

Hans

Technology Advances - GPL vs Everyone Else

by Hans » Tue, 02 Feb 1999 04:00:00

Yes wings, suspension and HP are major, but IMO the biggest advancement
would be the tires themselves. Modern tires make a huge difference..

  Hans


>I don't know about F1, but a couple of years ago I believe it was Car &
>Driver did a skidpad, slalom, drag strip, and autocross test with several
>different cars.  One of the cars was an Indy Car (Alessandro Zanardi's).
>The skidpad was a standard size skidpad so there was no aero advantages.
It
>pulled over 2 g's.  The team said they could have done better with more
>practice time.  And just as a note for you drag racers out there, Alex ran
a

doing
>a normal burnout, he did donuts before his run.  Not kidding, it was really
>cool!

>Eric Franzen



>>> I keep seeing reference to "technology advances" over the last 31 years
>to
>>> explain the difference in the handling/driving experience of GPL vs
other
>>> racing sims.  Beyond tires and aero, what would those advances be, that
>>> would affect handling performance?

>>> If you removed the wings, scallops, and other appendages from the body
of
>a
>>> modern FI car and mounted bias ply treaded tires, and detuned the engine
>>> (since much of hp of a modern F1 is needed to overcome the drag of aero
>at
>>> speed) I wonder how much different it would handle.  Certainly better,
>what
>>> with somewhat better dampening (gas shocks and the ability to tune with
>>> shock dyno's, etc.) and perhaps braking, although I'm not sure how much
>>> advantage carbon carbon brakes would have without the added grip of the
>>> tires.  Certainly some.

>>I'm not really sure, but I guess a modern F1 car without aero would handle
>quite
>>rotten.
>>There is virtually no suspension travel. And just look at how they
scrabble
>for
>>grip whenever
>>they are on slow parts of a track!
>>Engine mapping and diff/gearbox development has also come further, so has
>the
>>abilty to control
>>weight bias and c/g, as well as suspension design in general.
>>A modern F1 car stripped of its tyres and aero would suffer, but If a car
>was
>>purposely designed
>>for no wings and wooden tires, it would be faster than the 60s equivalent.
>The
>>main problem would
>>be to keep the designers *off* the downforce subject <g>...

>>Nice topic!

>>More..?
>>:-D

>>Matt

>>--
>>-----------------------------------------
>>Matthew Knutsen

>>"The Art of Legends" - GPL add-ons
>>http://www.racesimcentral.net/~kareknut/simrace1.htm
>>-----------------------------------------

Mike Vanlandingha

Technology Advances - GPL vs Everyone Else

by Mike Vanlandingha » Thu, 04 Feb 1999 04:00:00

I keep seeing reference to "technology advances" over the last 31 years to
explain the difference in the handling/driving experience of GPL vs other
racing sims.  Beyond tires and aero, what would those advances be, that
would affect handling performance?

If you removed the wings, scallops, and other appendages from the body of a
modern FI car and mounted bias ply treaded tires, and detuned the engine
(since much of hp of a modern F1 is needed to overcome the drag of aero at
speed) I wonder how much different it would handle.  Certainly better, what
with somewhat better dampening (gas shocks and the ability to tune with
shock dyno's, etc.) and perhaps braking, although I'm not sure how much
advantage carbon carbon brakes would have without the added grip of the
tires.  Certainly some.

With regard to modern sports/GT cars and sedans vs 1967 FI, eliminating aero
and soft, radial, slicks, and  the basic differences in layout of the
chassis, engine, and CG seems so much different as to defy comparison.

Discussion...?

-Mike

Richard G Cleg

Technology Advances - GPL vs Everyone Else

by Richard G Cleg » Thu, 04 Feb 1999 04:00:00

: If you removed the wings, scallops, and other appendages from the body of a
: modern FI car and mounted bias ply treaded tires, and detuned the engine
: (since much of hp of a modern F1 is needed to overcome the drag of aero at
: speed) I wonder how much different it would handle.  Certainly better, what
: with somewhat better dampening (gas shocks and the ability to tune with
: shock dyno's, etc.) and perhaps braking, although I'm not sure how much
: advantage carbon carbon brakes would have without the added grip of the
: tires.  Certainly some.

  Perhaps you could try some tests using F1 racing sim?  I think in that
it is possible to have accidents which will remove your front and rear
wing.  You might be able to get some feel by setting the wing angles to
zero, using treaded tyres (slicks).  From what I remember, loss of the
front wing makes the car simply forget to steer.  (Understeer is too
mild a word - more like Nosteer)

--
Richard G. Clegg     Only the mind is waving
Dept. of Mathematics (Network Control group) Uni. of York.

www: http://manor.york.ac.uk/top.html

Matthew Knutse

Technology Advances - GPL vs Everyone Else

by Matthew Knutse » Thu, 04 Feb 1999 04:00:00


> I keep seeing reference to "technology advances" over the last 31 years to
> explain the difference in the handling/driving experience of GPL vs other
> racing sims.  Beyond tires and aero, what would those advances be, that
> would affect handling performance?

> If you removed the wings, scallops, and other appendages from the body of a
> modern FI car and mounted bias ply treaded tires, and detuned the engine
> (since much of hp of a modern F1 is needed to overcome the drag of aero at
> speed) I wonder how much different it would handle.  Certainly better, what
> with somewhat better dampening (gas shocks and the ability to tune with
> shock dyno's, etc.) and perhaps braking, although I'm not sure how much
> advantage carbon carbon brakes would have without the added grip of the
> tires.  Certainly some.

I'm not really sure, but I guess a modern F1 car without aero would handle quite
rotten.
There is virtually no suspension travel. And just look at how they scrabble for
grip whenever
they are on slow parts of a track!
Engine mapping and diff/gearbox development has also come further, so has the
abilty to control
weight bias and c/g, as well as suspension design in general.
A modern F1 car stripped of its tyres and aero would suffer, but If a car was
purposely designed
for no wings and wooden tires, it would be faster than the 60s equivalent. The
main problem would
be to keep the designers *off* the downforce subject <g>...

Nice topic!

More..?
:-D

Matt

--
-----------------------------------------
Matthew Knutsen

"The Art of Legends" - GPL add-ons
http://home.sol.no/~kareknut/simrace1.htm
-----------------------------------------

Bill Met

Technology Advances - GPL vs Everyone Else

by Bill Met » Thu, 04 Feb 1999 04:00:00




>> I keep seeing reference to "technology advances" over the last 31 years to
>> explain the difference in the handling/driving experience of GPL vs other
>> racing sims.  Beyond tires and aero, what would those advances be, that
>> would affect handling performance?

>> If you removed the wings, scallops, and other appendages from the body of a
>> modern FI car and mounted bias ply treaded tires, and detuned the engine
>> (since much of hp of a modern F1 is needed to overcome the drag of aero at
>> speed) I wonder how much different it would handle.  Certainly better, what
>> with somewhat better dampening (gas shocks and the ability to tune with
>> shock dyno's, etc.) and perhaps braking, although I'm not sure how much
>> advantage carbon carbon brakes would have without the added grip of the
>> tires.  Certainly some.

>I'm not really sure, but I guess a modern F1 car without aero would handle quite
>rotten.
>There is virtually no suspension travel. And just look at how they scrabble for
>grip whenever
>they are on slow parts of a track!
>Engine mapping and diff/gearbox development has also come further, so has the
>abilty to control
>weight bias and c/g, as well as suspension design in general.
>A modern F1 car stripped of its tyres and aero would suffer, but If a car was
>purposely designed
>for no wings and wooden tires, it would be faster than the 60s equivalent. The
>main problem would
>be to keep the designers *off* the downforce subject <g>...

  You guys are forgetting one important thing.  Modern F1 cars have
immensely greater torsional stiffness than their '67 counterparts.  Also,
the weight savings from thin-wall casting techniques have allowed
designers to have more control over mass placement in the overall car.
Don't even get me started on carbon and metal matrix composites.
   This thread reminds me that I really need to renew my subscription to
Racecar Engineering magazine! :-0
--
Bill Mette      | "A person is smart.  People are dumb."
MCSNet, Chicago |                        - K MiB

Matthew Knutse

Technology Advances - GPL vs Everyone Else

by Matthew Knutse » Thu, 04 Feb 1999 04:00:00





> >> I keep seeing reference to "technology advances" over the last 31 years to
> >> explain the difference in the handling/driving experience of GPL vs other
> >> racing sims.  Beyond tires and aero, what would those advances be, that
> >> would affect handling performance?

> >> If you removed the wings, scallops, and other appendages from the body of a
> >> modern FI car and mounted bias ply treaded tires, and detuned the engine
> >> (since much of hp of a modern F1 is needed to overcome the drag of aero at
> >> speed) I wonder how much different it would handle.  Certainly better, what
> >> with somewhat better dampening (gas shocks and the ability to tune with
> >> shock dyno's, etc.) and perhaps braking, although I'm not sure how much
> >> advantage carbon carbon brakes would have without the added grip of the
> >> tires.  Certainly some.

> >I'm not really sure, but I guess a modern F1 car without aero would handle quite
> >rotten.
> >There is virtually no suspension travel. And just look at how they scrabble for
> >grip whenever
> >they are on slow parts of a track!
> >Engine mapping and diff/gearbox development has also come further, so has the
> >abilty to control
> >weight bias and c/g, as well as suspension design in general.
> >A modern F1 car stripped of its tyres and aero would suffer, but If a car was
> >purposely designed
> >for no wings and wooden tires, it would be faster than the 60s equivalent. The
> >main problem would
> >be to keep the designers *off* the downforce subject <g>...

>   You guys are forgetting one important thing.  Modern F1 cars have
> immensely greater torsional stiffness than their '67 counterparts.  

Yeah, forgot that, but what does it help if you can't get any more power
on the road anyway?
Back to my old comparison from the BOSS race at Mondello Park (Ireland)
a few years ago;
the class is Formula Libre, that means, evrything with open wheels goes,
including specials.
An F3000 was definitely the quickest car (a 1990 Lola), the newest F1s
being '94 cars. And old
70s Formula 3 cars were'nt that much slower..it was fascinating to
watch! The track was terribly
bumpy and twisty, our Turbo F3000 lost a handful of gears after 10
laps:)

Also,

Yeah, same point as I had on weight distribution.

LOL! While you're at it, get "Racetech" as well, it's more suitable to
mortals <g>

All Best,

Matt

--
-----------------------------------------
Matthew Knutsen

"The Art of Legends" - GPL add-ons
http://home.sol.no/~kareknut/simrace1.htm
-----------------------------------------

Eric Franze

Technology Advances - GPL vs Everyone Else

by Eric Franze » Thu, 04 Feb 1999 04:00:00

I don't know about F1, but a couple of years ago I believe it was Car &
Driver did a skidpad, slalom, drag strip, and autocross test with several
different cars.  One of the cars was an Indy Car (Alessandro Zanardi's).
The skidpad was a standard size skidpad so there was no aero advantages.  It
pulled over 2 g's.  The team said they could have done better with more
practice time.  And just as a note for you drag racers out there, Alex ran a

a normal burnout, he did donuts before his run.  Not kidding, it was really
cool!

Eric Franzen



>> I keep seeing reference to "technology advances" over the last 31 years
to
>> explain the difference in the handling/driving experience of GPL vs other
>> racing sims.  Beyond tires and aero, what would those advances be, that
>> would affect handling performance?

>> If you removed the wings, scallops, and other appendages from the body of
a
>> modern FI car and mounted bias ply treaded tires, and detuned the engine
>> (since much of hp of a modern F1 is needed to overcome the drag of aero
at
>> speed) I wonder how much different it would handle.  Certainly better,
what
>> with somewhat better dampening (gas shocks and the ability to tune with
>> shock dyno's, etc.) and perhaps braking, although I'm not sure how much
>> advantage carbon carbon brakes would have without the added grip of the
>> tires.  Certainly some.

>I'm not really sure, but I guess a modern F1 car without aero would handle
quite
>rotten.
>There is virtually no suspension travel. And just look at how they scrabble
for
>grip whenever
>they are on slow parts of a track!
>Engine mapping and diff/gearbox development has also come further, so has
the
>abilty to control
>weight bias and c/g, as well as suspension design in general.
>A modern F1 car stripped of its tyres and aero would suffer, but If a car
was
>purposely designed
>for no wings and wooden tires, it would be faster than the 60s equivalent.
The
>main problem would
>be to keep the designers *off* the downforce subject <g>...

>Nice topic!

>More..?
>:-D

>Matt

>--
>-----------------------------------------
>Matthew Knutsen

>"The Art of Legends" - GPL add-ons
>http://home.sol.no/~kareknut/simrace1.htm
>-----------------------------------------

Ben Colema

Technology Advances - GPL vs Everyone Else

by Ben Colema » Fri, 05 Feb 1999 04:00:00

Certainly the modern monocoque would have greater torsional rigidity than
the 67 cars, and the use of the engine as a stressed member is way more
advanced (I think in 67 this had begun?).  Weight should be down due to
finite element analysis and the resultant limit state design using the
appropriate materials - materials research is one of the key areas of
advancement IMO.

The question could also be split - a modern F1 with wings removed and ***
tyres versus a purpose designed no-downforce-crappy-tyre beast.  The latter
would likely be a bunch lighter due to the reduced forces acting on it as
well as having a suspension optimised using modern techniques to take full
advantage (empty disadvantage?) of the crappy tyres and no downforce.

Ben

Torgeir Fos

Technology Advances - GPL vs Everyone Else

by Torgeir Fos » Fri, 05 Feb 1999 04:00:00



> : If you removed the wings, scallops, and other appendages from the body of a
> : modern FI car and mounted bias ply treaded tires, and detuned the engine
> : (since much of hp of a modern F1 is needed to overcome the drag of aero at
> : speed)

Does any of the teams use flexing wings. Is it allowed?
When the car is going fast the wing would be pressed back/down by the air
pressure and give less drag and downforce. The stiffness of the wing would
determine the how large the decrease in drag and downforce would be as speed
increases.

--
Torgeir Foss
Oslo, Norway

Richard G Cleg

Technology Advances - GPL vs Everyone Else

by Richard G Cleg » Fri, 05 Feb 1999 04:00:00


:>
:> : If you removed the wings, scallops, and other appendages from the body of a
:> : modern FI car and mounted bias ply treaded tires, and detuned the engine
:> : (since much of hp of a modern F1 is needed to overcome the drag of aero at
:> : speed)

: Does any of the teams use flexing wings. Is it allowed?

  Ferrari used a flexible front wing to the end of '97 but it was, I
believe, banned as a "movable aerodynamic device" - I think the FIA
now specify a maximum degree of flexion allowed in wings.

--
Richard G. Clegg     Only the mind is waving
Dept. of Mathematics (Network Control group) Uni. of York.

www: http://manor.york.ac.uk/top.html

DPHI

Technology Advances - GPL vs Everyone Else

by DPHI » Sat, 06 Feb 1999 04:00:00

Flexible rear wings got Team Menard in trouble at one point in last years IRL
season.

-don

Te

Technology Advances - GPL vs Everyone Else

by Te » Sat, 06 Feb 1999 04:00:00

On Wed, 3 Feb 1999 05:03:30 -0800, "Mike Vanlandingham"


>I keep seeing reference to "technology advances" over the last 31 years to
>explain the difference in the handling/driving experience of GPL vs other
>racing sims.  Beyond tires and aero, what would those advances be, that
>would affect handling performance?

Apart from the fact that both cars have 4 wheels and a steering wheel
they don't have much in common anymore even if you would remove wings
and replace the tyres with something else. Even without the wings the
underside of a F1 car produces an incredible amount of downforce and
the whole bodywork serves aerodynamic purposes. Ride height is very
low and suspension is extremely stiff, brakes are just a totally
different dimension either and the engine works in a completely
different way as well producing not only more hp but also twice as
much rpm at relatively little torque. Keep in mind we're talking about
30+ years of technology here. And F1 is certainly the most
sophisticated and technical advanced motorsport today.

--Tel

Scott Hieronymu

Technology Advances - GPL vs Everyone Else

by Scott Hieronymu » Sat, 06 Feb 1999 04:00:00


>On Wed, 3 Feb 1999 05:03:30 -0800, "Mike Vanlandingham"

>>I keep seeing reference to "technology advances" over the last 31 years to
>>explain the difference in the handling/driving experience of GPL vs other
>>racing sims.  Beyond tires and aero, what would those advances be, that
>>would affect handling performance?

>Apart from the fact that both cars have 4 wheels and a steering wheel
>they don't have much in common anymore even if you would remove wings
>and replace the tyres with something else. Even without the wings the
>underside of a F1 car produces an incredible amount of downforce and
>the whole bodywork serves aerodynamic purposes. Ride height is very
>low and suspension is extremely stiff, brakes are just a totally
>different dimension either and the engine works in a completely
>different way as well producing not only more hp but also twice as
>much rpm at relatively little torque. Keep in mind we're talking about
>30+ years of technology here. And F1 is certainly the most
>sophisticated and technical advanced motorsport today.

>--Tel

One more minor improvement that has been overlooked would be the speed of
the transmission, shifting in thousands of a second, instead of tenths.

Scott

ymenar

Technology Advances - GPL vs Everyone Else

by ymenar » Sat, 06 Feb 1999 04:00:00

DPHII wrote

Scuderia Ferrari also tried this and got into trouble.  The idea is really
simple and excellent, but I somehow agree on making this illegal.  You could
almost create suspension for the wings, to maximize the effect of them.  Or
even more... I/O like in the good old active suspension days that would
angle the wings perfectly for each corners.. and why not different for each
side of the car  ;-)

-= Fran?ois Mnard <ymenard/Nas-Frank>
-= NROS Nascar sanctioned Guide http://www.nros.com/
-= SimRacing Online http://www.simracing.com/
-= Official mentally retarded guy of r.a.s.
-= May the Downforce be with you...

"People think it must be fun to be a super genius, but they don't realise
how hard it is to put up with all the idiots in the world."


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