engine placement...

[RichD]

I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.

Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration? Any motorheads here can explicate?

This question ought to go to sci.physics, but that group is full of kooks -

--
Rich

 

[Lasse Langwadt Christensen]

mandag den 24. august 2020 kl. 21.28.54 UTC+2 skrev RichD:

I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.

Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration? Any motorheads here can explicate?

This question ought to go to sci.physics, but that group is full of kooks -

more of the weight is on the rear wheels, I think it is something like 40/60 instead of 50/50

 

[John Larkin]

On Mon, 24 Aug 2020 12:28:48 -0700 (PDT), RichD
<r_delaney2001@yahoo.com> wrote:

I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.

Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration? Any motorheads here can explicate?

If you have infinite horsepower, acceleration is limited by wheel
spin, so weight distribution matters... it controls down force on the
driving wheels. That\'s why dragsters are long and have the engine
forward, and have near zero down force on the front wheels off the
line.

Is the new vette rear-wheel drive?

Why would any normal person want to accelerate madly and destroy
expensive tires?

This question ought to go to sci.physics, but that group is full of kooks -

Kooks? On usenet? I\'m shocked.

 

[John Larkin]

On Mon, 24 Aug 2020 12:42:45 -0700 (PDT), Lasse Langwadt Christensen
<langwadt@fonz.dk> wrote:

mandag den 24. august 2020 kl. 21.28.54 UTC+2 skrev RichD:
I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.

Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration? Any motorheads here can explicate?

This question ought to go to sci.physics, but that group is full of kooks -


more of the weight is on the rear wheels, I think it is something like 40/60 instead of 50/50

You can overcome the classic coefficient-of-friction limitation by
melting the tires and operating in viscous flow mode. If you can
afford the insurance and the reckless driving tickets.

I knew a guy in college who got a Cobra. The original tires lasted one
week.

 

[amdx]

On 8/24/2020 2:42 PM, John Larkin wrote:

On Mon, 24 Aug 2020 12:28:48 -0700 (PDT), RichD
r_delaney2001@yahoo.com> wrote:

I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.

Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration? Any motorheads here can explicate?
If you have infinite horsepower, acceleration is limited by wheel
spin, so weight distribution matters... it controls down force on the
driving wheels. That\'s why dragsters are long and have the engine
forward,

Not sure what you mean by engine forward, nowadays it\'s behind the
driver and as close to the rear wheels as possible.

https://youtu.be/yY2dTnkCOs4?t=442

and have near zero down force on the front wheels off the
line.

Is the new vette rear-wheel drive?

Why would any normal person want to accelerate madly and destroy
expensive tires?

Acceleration is thrilling! As is going around a corner at high Gs.

Mikek


--
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

 

[Lasse Langwadt Christensen]

mandag den 24. august 2020 kl. 21.48.00 UTC+2 skrev John Larkin:

On Mon, 24 Aug 2020 12:42:45 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 24. august 2020 kl. 21.28.54 UTC+2 skrev RichD:
I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.

Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration? Any motorheads here can explicate?

This question ought to go to sci.physics, but that group is full of kooks -


more of the weight is on the rear wheels, I think it is something like 40/60 instead of 50/50



You can overcome the classic coefficient-of-friction limitation by
melting the tires and operating in viscous flow mode. If you can
afford the insurance and the reckless driving tickets.

I knew a guy in college who got a Cobra. The original tires lasted one
week.

maximum acceleration and braking is with something like 10% slip

 

[Tabby]

On Monday, 24 August 2020 20:28:54 UTC+1, RichD wrote:

I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.

Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration? Any motorheads here can explicate?

This question ought to go to sci.physics, but that group is full of kooks -

I\'ve never seen the point in such cars.


NT

 

[Phil Hobbs]

On 2020-08-24 15:28, RichD wrote:

I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.

Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration? Any motorheads here can explicate?

This question ought to go to sci.physics, but that group is full of kooks -

--
Rich

For off-the-line acceleration, it\'s helpful if more of the weight is
over the drive wheels, because for a given road surface and tire
compound, the maximum drive force tends to be proportional to the normal
force on the drive wheels.

During hard acceleration, the normal force shifts towards the rear
wheels because the vehicle\'s centre of mass is above the road surface,
which is why front-engine cars don\'t have the real-life advantage one
would expect from this.

The real advantage of a mid-engine car is the reduced polar moment of
inertia, which allows steering input to change the attitude of the car
more easily. That helps the cornering and road feel a lot.

On the minus side, mid-engine cars are a huge pain to work on.

Cheers

Phil \"stick-shift convertible Mustang\" Hobbs


--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

[Phil Hobbs]

On 2020-08-24 17:20, Tabby wrote:

On Monday, 24 August 2020 20:28:54 UTC+1, RichD wrote:

I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.

Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration? Any motorheads here can explicate?

This question ought to go to sci.physics, but that group is full of kooks -

I\'ve never seen the point in such cars.


NT

They\'re fun, if you have the money to spare and can fit in them. (I fit
fine in Corvettes, but am a good six inches too tall for a Lambo.)

Cheers

Phil Hobbs

 

[Phil Hobbs]

On 2020-08-24 18:00, Phil Hobbs wrote:

On 2020-08-24 15:28, RichD wrote:

I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.

Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount.  Why would engine location
affect acceleration?  Any motorheads here can explicate?

This question ought to go to sci.physics, but that group is full of
kooks -

--
Rich


For off-the-line acceleration, it\'s helpful if more of the weight is
over the drive wheels, because for a given road surface and tire
compound, the maximum drive force tends to be proportional to the normal
force on the drive wheels.

During hard acceleration, the normal force shifts towards the rear
wheels because the vehicle\'s centre of mass is above the road surface,
which is why front-engine cars don\'t have the real-life advantage one
would expect from this.

Front engine front wheel drive cars, that is.

The real advantage of a mid-engine car is the reduced polar moment of
inertia, which allows steering input to change the attitude of the car
more easily.  That helps the cornering and road feel a lot.

On the minus side, mid-engine cars are a huge pain to work on.

Cheers

Phil \"stick-shift convertible Mustang\" Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

[RichD]

On August 24, lang...@fonz.dk wrote:

I saw a review of the latest Corvette,
Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration? Any motorheads here can explicate?

more of the weight is on the rear wheels, I think it is something like 40/60 instead of 50/50

maximum acceleration and braking is with something like 10% slip

Why?

--
Rich

 

[RichD]

On August 24, Tabby wrote:

I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.
Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration?

I\'ve never seen the point in such cars.

Do you see the point in life?

Let me help you out :
https://www.youtube.com/watch?v=eL7Uvk-RAkI

\"You only go around once in life, so grab for all the gusto you can\"

So american, to get philosophy from a teevee ad -

--
Rich

 

[Lasse Langwadt Christensen]

tirsdag den 25. august 2020 kl. 00.40.46 UTC+2 skrev RichD:

On August 24, lang...@fonz.dk wrote:
I saw a review of the latest Corvette,
Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration? Any motorheads here can explicate?

more of the weight is on the rear wheels, I think it is something like 40/60 instead of 50/50

maximum acceleration and braking is with something like 10% slip

Why?

probably some physicist that can explain why rubber acts like that

 

[bitrex]

On 8/24/2020 5:20 PM, Tabby wrote:

On Monday, 24 August 2020 20:28:54 UTC+1, RichD wrote:

I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.

Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration? Any motorheads here can explicate?

This question ought to go to sci.physics, but that group is full of kooks -

I\'ve never seen the point in such cars.


NT

The C8 Corvette is the type of refresh the car has needed for about 20
years; and it\'s the type of design that the
I-liked-the-old-one-better-don\'t-like-the-new-stuff Corvette aficionado
will hate, which should be OK for sales. Build the same basic thing long
enough and you start getting undercut by your own legacy, see Gibson
guitars, Harley motorcycles.

That is to say Chevy wanted to get away from the image of the Corvette
as your typical performance convertible an older man buys after he loses
most of the hair he\'s going to lose and has gone thru at least one divorce.

This one kid I knew as a teenager\'s Dad had a \'67 Vette in his garage he
drove it like 10 miles a year, it was immaculate. Kid scratched his
Dad\'s vette bad one time cleaning the garage his Dad shoved him thru a
plate glass patio window. little shit bastard scratch my fuckin\' Vette.

 

[bitrex]

On 8/24/2020 7:23 PM, bitrex wrote:

On 8/24/2020 5:20 PM, Tabby wrote:
On Monday, 24 August 2020 20:28:54 UTC+1, RichD  wrote:

I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.

Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount.  Why would engine location
affect acceleration?  Any motorheads here can explicate?

This question ought to go to sci.physics, but that group is full of
kooks -

I\'ve never seen the point in such cars.


NT


The C8 Corvette is the type of refresh the car has needed for about 20
years; and it\'s the type of design that the
I-liked-the-old-one-better-don\'t-like-the-new-stuff Corvette aficionado
will hate, which should be OK for sales. Build the same basic thing long
enough and you start getting undercut by your own legacy, see Gibson
guitars, Harley motorcycles.

That is to say Chevy wanted to get away from the image of the Corvette
as your typical performance convertible an older man buys after he loses
most of the hair he\'s going to lose and has gone thru at least one divorce.

Not necessarily in that order but you get the idea.

 

[bitrex]

On 8/24/2020 6:52 PM, RichD wrote:

On August 24, Tabby wrote:
I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.
Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration?

I\'ve never seen the point in such cars.

Do you see the point in life?

Let me help you out :
https://www.youtube.com/watch?v=eL7Uvk-RAkI

\"You only go around once in life, so grab for all the gusto you can\"

So american, to get philosophy from a teevee ad -

--
Rich

There\'s always the mid-engine supercharged minivan for the less flashy:

<https://www.youtube.com/watch?v=70mWGEzHakw>

 

[bitrex]

On 8/24/2020 5:20 PM, Tabby wrote:

On Monday, 24 August 2020 20:28:54 UTC+1, RichD wrote:

I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.

Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration? Any motorheads here can explicate?

This question ought to go to sci.physics, but that group is full of kooks -

I\'ve never seen the point in such cars.


NT

Very understandable. May I instead interest you in this lovely 1985
Chrysler LeBaron Mark Cross Town & Country edition convertible?

This beaut was one of Lee Iacocca\'s fever-dreams and might be up your alley

<https://www.hemmings.com/classifieds/cars-for-sale/chrysler/lebaron/2406441.html>

 

[bitrex]

On 8/25/2020 5:05 AM, bitrex wrote:

On 8/24/2020 5:20 PM, Tabby wrote:
On Monday, 24 August 2020 20:28:54 UTC+1, RichD  wrote:

I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.

Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount.  Why would engine location
affect acceleration?  Any motorheads here can explicate?

This question ought to go to sci.physics, but that group is full of
kooks -

I\'ve never seen the point in such cars.


NT


Very understandable. May I instead interest you in this lovely 1985
Chrysler LeBaron Mark Cross Town & Country edition convertible?

This beaut was one of Lee Iacocca\'s fever-dreams and might be up your alley

https://www.hemmings.com/classifieds/cars-for-sale/chrysler/lebaron/2406441.html

\"Mark Cross\" is not a name that I\'m immediately familiar with or has
recognizable luxury cachet for me, but it may have had some ritual
significance or religious purpose to the humans of the time, rather like
the process of cladding out your horseless carriage like a Viking longship.

 

[server]

On Mon, 24 Aug 2020 15:08:21 -0500, amdx <amdx@knology.net> wrote:

On 8/24/2020 2:42 PM, John Larkin wrote:
On Mon, 24 Aug 2020 12:28:48 -0700 (PDT), RichD
r_delaney2001@yahoo.com> wrote:

I saw a review of the latest Corvette, the writer raved,
it\'s comparable to Lambos costing twice as much.

Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration? Any motorheads here can explicate?
If you have infinite horsepower, acceleration is limited by wheel
spin, so weight distribution matters... it controls down force on the
driving wheels. That\'s why dragsters are long and have the engine
forward,

Not sure what you mean by engine forward, nowadays it\'s behind the
driver and as close to the rear wheels as possible.

Oh, they seem to have moved some since I last looked. The wheel torque
wants to lift the front wheels off the ground (that\'s good in a way,
to move the down-force onto the rear tires) but that makes it hard to
steer. I think they moved the engines back to keep oil and flames and
chunks of piston out of their faces.

https://youtu.be/yY2dTnkCOs4?t=442

and have near zero down force on the front wheels off the
line.

Is the new vette rear-wheel drive?

Why would any normal person want to accelerate madly and destroy
expensive tires?

Acceleration is thrilling! As is going around a corner at high Gs.

On a race track maybe. Do you race?

I\'ve done a little competitive racing but it\'s like skydiving. The
thrill is brief and the prep is extensive and you hang out with boring
over-hormoned people. You *might* win a cheap plastic trophy.

Everytime a fuel dragster engine explodes (and they do that a lot)
they spend kilobucks and weeks in a garage rebuilding.

I *hate* it when a circuit blows up. I\'m very careful about probing. I
gave my engineers a lecture recently about probe slips.

Mikek

--

John Larkin Highland Technology, Inc

Science teaches us to doubt.

Claude Bernard

 

[Mikko OH2HVJ]

RichD <r_delaney2001@yahoo.com> writes:

On August 24, lang...@fonz.dk wrote:
I saw a review of the latest Corvette,
Anyway, he claimed that this version is quicker from
the starting gate than previous because, novelly, the
engine is mid-mount. Why would engine location
affect acceleration? Any motorheads here can explicate?

more of the weight is on the rear wheels, I think it is something like 40/60 instead of 50/50

maximum acceleration and braking is with something like 10% slip

Why?

Think of the surface pattern and rubber as a bit elastic brush and it
starts to make sense. Or induction motor as we\'re in s.e.d.

(I used to work with guys who had made their PhD on tire friction..)

--
mikko