rec.autos.simulators

Left-foot braking

Asbj?rn Bj?rnst

Left-foot braking

by Asbj?rn Bj?rnst » Fri, 30 Nov 2001 18:08:42


As opposed to a virtual wheel driven car?
--
  -asbjxrn

Olav K. Malm

Left-foot braking

by Olav K. Malm » Fri, 30 Nov 2001 18:29:32



> > It actually extends the life of the gearbox, and gives a smoother
> > ride. With a real wheel driven car it is also essensial on snowy and
> > icy roads, so the rears doesn't lock up.

> As opposed to a virtual wheel driven car?

Bonks head againt keyboard. t6vf g (there) I'm still having some
problem adjusting to the new Logitech Desktop Pro split type
keyboard.

Nice concept though, virtual wheel driven car, but probably no GPL

--
Olav K. Malmin
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Asbj?rn Bj?rnst

Left-foot braking

by Asbj?rn Bj?rnst » Fri, 30 Nov 2001 18:51:06




> > > It actually extends the life of the gearbox, and gives a smoother
> > > ride. With a real wheel driven car it is also essensial on snowy and
> > > icy roads, so the rears doesn't lock up.

> > As opposed to a virtual wheel driven car?

> Bonks head againt keyboard. t6vf g (there) I'm still having some
> problem adjusting to the new Logitech Desktop Pro split type
> keyboard.

I can understand that it is hard to adjust to if it has l and r close
together... :-)

:-)
--
  -asbjxrn

Goy Larse

Left-foot braking

by Goy Larse » Fri, 30 Nov 2001 20:57:14




> > > First off, passenger cars are not "Race Cars". Double Clutching on a
> > > passenger car will do nothing but shorten the life of your transmission
> > > sycro's. Remember those? they were designed to make manual transmissions
> > > shift easier.
> > > Ya know what they really are? Little brakes that slow the spinning gears so
> > > that the dogs that engage the gears will slide into each other effortlessly.
> > > Double clutching just make these little (Brass) brakes work twice, thus
> > > shortening the life of your transmission in half, IMO.

> > Ok, then explain this to me, if Olav perfects his double declutching
> > technique and manages to perfectly match the engine revs to the revs of
> > the gearbox at the time, how can this *increase* the wear on the syncros
> > when this means that the syncros won't have to do any work at all, Olav
> > has already done the work for them ?

> You know how the gears go in *really* *easily* when you
> get a double-declutched downshift just right?  Big hint:
> less force on the shift mechanism mean less wear in the
> gearbox...

> Mr 426 is talking rubbish, I'm afraid.  Either that, or
> he's got no clue at all about the rev-matching part of
> double-declutching :-)

I hate when people who knows what they are talking about ruins my
cleverly disguised traps.....:-), I used to own a 1942 Willys MB with
broken syncro rings, double-declutching soon became second nature...:-),
fun car though, wish I still had it, 140 cui of raw power and a 3 speed
gearbox......

Beers and cheers
(uncle) Goy

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Goy Larse

Left-foot braking

by Goy Larse » Fri, 30 Nov 2001 20:59:39




> > > It actually extends the life of the gearbox, and gives a smoother
> > > ride. With a real wheel driven car it is also essensial on snowy and
> > > icy roads, so the rears doesn't lock up.

> > As opposed to a virtual wheel driven car?

> Bonks head againt keyboard. t6vf g (there) I'm still having some
> problem adjusting to the new Logitech Desktop Pro split type
> keyboard.

> Nice concept though, virtual wheel driven car, but probably no GPL

Bring back "freewheeling" I say, my dad used to drive 2-stroke SAAB's,
not much engine braking with those though

Beers and cheers
(uncle) Goy

"The Pits"    http://www.theuspits.com/

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Jonny Hodgso

Left-foot braking

by Jonny Hodgso » Sat, 01 Dec 2001 03:18:44


> > > Ok, then explain this to me, if Olav perfects his double declutching
> > > technique and manages to perfectly match the engine revs to the revs of
> > > the gearbox at the time, how can this *increase* the wear on the syncros
> > > when this means that the syncros won't have to do any work at all, Olav
> > > has already done the work for them ?

> > You know how the gears go in *really* *easily* when you
> > get a double-declutched downshift just right?  Big hint:
> > less force on the shift mechanism mean less wear in the
> > gearbox...
> I hate when people who knows what they are talking about ruins my
> cleverly disguised traps.....:-), I used to own a 1942 Willys MB with
> broken syncro rings, double-declutching soon became second nature...:-),
> fun car though, wish I still had it, 140 cui of raw power and a 3 speed
> gearbox......

Saaaa - reeeeee... :-)

Jonny

Goy Larse

Left-foot braking

by Goy Larse » Sat, 01 Dec 2001 06:48:13



> > > > Ok, then explain this to me, if Olav perfects his double declutching
> > > > technique and manages to perfectly match the engine revs to the revs of
> > > > the gearbox at the time, how can this *increase* the wear on the syncros
> > > > when this means that the syncros won't have to do any work at all, Olav
> > > > has already done the work for them ?

> > > You know how the gears go in *really* *easily* when you
> > > get a double-declutched downshift just right?  Big hint:
> > > less force on the shift mechanism mean less wear in the
> > > gearbox...

> > I hate when people who knows what they are talking about ruins my
> > cleverly disguised traps.....:-), I used to own a 1942 Willys MB with
> > broken syncro rings, double-declutching soon became second nature...:-),
> > fun car though, wish I still had it, 140 cui of raw power and a 3 speed
> > gearbox......

> Saaaa - reeeeee... :-)

Well, you'll have to make amends, 3 hours of playing Bill Elliot's
Nascar challenge awaits you.....

Beers and cheers
(uncle) Goy

http://www.theuspits.com
http://www.teammirage.com

"A woman is an occasional pleasure but a cigar is always a smoke"
--Groucho Marx--

Jonny Hodgso

Left-foot braking

by Jonny Hodgso » Sat, 01 Dec 2001 07:20:20


> > > I hate when people who knows what they are talking about ruins my
> > > cleverly disguised traps.....:-), I used to own a 1942 Willys MB with
> > > broken syncro rings, double-declutching soon became second nature...:-),
> > > fun car though, wish I still had it, 140 cui of raw power and a 3 speed
> > > gearbox......

> > Saaaa - reeeeee... :-)

> Well, you'll have to make amends, 3 hours of playing Bill Elliot's
> Nascar challenge awaits you.....

Aargh, no, must turn right! :-p

Jonny

Goy Larse

Left-foot braking

by Goy Larse » Sat, 01 Dec 2001 23:55:23



> > > > I hate when people who knows what they are talking about ruins my
> > > > cleverly disguised traps.....:-), I used to own a 1942 Willys MB with
> > > > broken syncro rings, double-declutching soon became second nature...:-),
> > > > fun car though, wish I still had it, 140 cui of raw power and a 3 speed
> > > > gearbox......

> > > Saaaa - reeeeee... :-)

> > Well, you'll have to make amends, 3 hours of playing Bill Elliot's
> > Nascar challenge awaits you.....

> Aargh, no, must turn right! :-p

In that case, you can chose to spend the same time with DJV8 Racing
instead.....:-)

Beers and cheers
(uncle) Goy

"The Pits"    http://www.theuspits.com/

* Spam is for losers who can't get business any other way *
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J

Left-foot braking

by J » Mon, 03 Dec 2001 22:09:43

This is cheating ;-)

Yup BTW
JensSchumi


---------------------------------------------
LWFF Ball Bearing conversion at:
http://jensschumi.tripod.com/

GPLRank: -14.82
Monsters of GPL: sub 95

REDLINE42

Left-foot braking

by REDLINE42 » Tue, 04 Dec 2001 02:40:48

Ah Yes, The subject of double clutching always seems to bring out the idiots
on the net.
http://forums.caranddriver.com/ubb/Forum4/HTML/000297.html

Some even have the insane opinion of double clutching on the up shift, and
shifting for motorcycles, LOL

to hear the throttle burp :)
Olav your answer can be found here;
http://cartalk.cars.com/Columns/Archive/1996/December/11.html

For all the other knuckleheads that think I'm talking rubbish, I won't even
try to explain technically the reason why not to double clutch synchromesh
transmissions, as I'm sure you have no understanding of modern mechanical
transmissions at all.

I'll just refer the opinion of the Chief Instructor at the Porsche Driving
Experience and 10 time Endurance race winner Hurley Haywood.

"My assigned professional driver was Hurley Haywood, a long-time Porsche
team driver and winner of both LeMans and Daytona"

"The manual gear shifter was easy to shift but felt a bit floppy.
Double-clutching or heel-and-toeing are not needed to shift down into a
lower gear - "double-clutching is for truck drivers" said Hurley - the
six-speed's syncromesh operation is smooth enough to handle quick shifts and
sudden engine loads."

Found in an article here;
http://www.canadiandriver.com/articles/gw/911.htm

Hurley Haywood Reference

Instructor at the Porsche Driving Experience
http://www.porschedriving.com/indexa.html

Hurley Haywood - The Master of Endurance Racing
Five victories in the 24 Hours of Daytona. Three more at the Mecca of sports
car racing, Le Mans, and two wins in the 12 Hours of Sebring
http://www.limerock.com/LRP-News/articles/news84.html

Hurley Haywood, The Glen's Winningest Driver
http://www.grand-am.com/news/nr_08-15-00_1.html

Three-time 24 Hours of Le Mans winner Hurley Haywood driving the Porsche
962C that won that race in 1987. ...
http://www.scheuern.com/mbhist98/p962a.htm

Daytona 24 Hour Multiple winners: Hurley Haywood (5)
http://www.infoplease.com/ipsa/A0201513.html

12 Hours Of Sebring Records Most Top 10 Finishes
http://www.sebringraceway.com/records.html

The 24 Hours of Le Mans Multiple winners
http://www.infoplease.com/ipsa/A0201512.html

Motorsport.com An interview with Hurley Haywood
http://www.motorsport.com/magazine/feature.asp?C=Special&D=2000-08-15

--
Daytona Beach - Winter Speed Carnival 1903 - 1935

1919 - Ralph DePalma Driving Champion and winner of hundreds of races, sets
new 1 mile record driving 905 cubic inch V-12 Packard on beach at 149.875
mph. DePalma also sets World Records for distances of 2 to 20 miles and
standing mile. His standing mile record of 92.713 mph is unbroken for 36
years.

John Mullin

Left-foot braking

by John Mullin » Tue, 04 Dec 2001 09:43:27

Clutch-in
shift to neutral
clutch-out
blip the gas
clutch-in
select next lower gear
clutch-out

The point of this is to match internal shaft speeds of the transmission.
Synchros on street cars do this automatically, but race engines often do not
have the feature as they are more complex maintain.  Practicing this on the
street has the added benefit of extending the life of your synchros.

John



> > While still on the topic, I take myself in double clutching and heel
> > and toe almost every time i shift down now.

> hm.  double clutching...  what's that?

> --
> Gunnar
>     #31 SUCKS#015 Tupperware MC#002 DoD#0x1B DoDRT#003 DoD:CT#4,8 Kibo: 2
>                              gitaren er en sjingke

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John Mullin

Left-foot braking

by John Mullin » Tue, 04 Dec 2001 10:03:30

The links referenced mention the potential for increased clutch wear, but
nothing about:

"Double Clutching on a passenger car will do nothing but shorten the life of
your transmission sycro's"

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Asbj?rn Bj?rnst

Left-foot braking

by Asbj?rn Bj?rnst » Tue, 04 Dec 2001 10:44:53


> BTW, why do you have to unclutch to blip the throttle?  (I guess it's a
> synchro thing? - the only synchro-less vehicle I've ever driven was my old
> austin cambridge but that was only first gear)

To "rev up" the engine side of the gearbox.
If you don't unclutch you only rev up the engine not the actual gears.
--
  -asbjxrn

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