>>>>www.topgear.com/drives/A0/00/roadtests/01/01.html
>>>
[quoted text clipped - 9 lines]
>impression seems to be that the Brera and 159 are extremely similar in
>all but the rear end of the body shell.
The reason for the OP was to hopefully generate comment on the test.
Especially given the number of posts here in the pass about the desire to
own the car when it became available. I thought it would be a good thread.
>I fancy a car with ESP though - one that slows down when it senses that
>the driver ahead is about to do something stupid. ;-) More seriously,
>I'm a bit confused about ESP and VDC. Are they the same thing, and what
>exactly do they do? Google reveals lots of mentions, but I failed to
>find a decent description.
They are basically the same animal.
http://www.bosch-esperience.de/pdf/toyota_studie_en.pdf
In the context of Alfa Romeo
VDC = Dynamic Stability Control (driver switchable)
An electronic Vehicle Stability Control system with 12 value control unit.
Works with other systems to help manage the brakes. eg automatically
increasing the braking pressure in emergency braking, allows the brake
pressure to ease off gently as car begins to move off from a hill start
etc., Not exactly the most detailed description that they could have
written, but the best that I could find.
Pete

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<iowna156@rustclubalfa.com>
156 2.0 TS (2001) - Proteo Rosso
Tony Rickard - 17 Dec 2005 13:35 GMT
>>I fancy a car with ESP though - one that slows down when it senses that
>>the driver ahead is about to do something stupid. ;-) More seriously,
>>I'm a bit confused about ESP and VDC. Are they the same thing, and what
>>exactly do they do? Google reveals lots of mentions, but I failed to
>>find a decent description.
> They are basically the same animal.
> http://www.bosch-esperience.de/pdf/toyota_studie_en.pdf
[quoted text clipped - 9 lines]
>
> Pete
My understanding that in Alfa parlance ESP is traction control and is
switchable whereas VDC manages the braking system to avoid sideways slip
(prevent under or over steer in extreme conditions) and is not switchable.
My 156 has VDC and it feels really weird when it takes over - on one
occasion I came around a corner a tad fast and found a queue of traffic,
the VDC kept alternating which wheels were braked and I wobbled to a
safe stop. It felt like I was wiggling the steering wheel whilst the
brake pedal was vibrating under my foot. I can see why people need to
find out how to disable it for track use but it certainly stopped me
quickly with no correction required on my part. I didn't like the
feeling - as I was longer controlling the inputs to the car and I was
not concerned it wouldn't pull up in time or slide, but the computer
probably knew best...
Pete - 17 Dec 2005 15:16 GMT
>My understanding that in Alfa parlance ESP is traction control and is
>switchable whereas VDC manages the braking system to avoid sideways slip
[quoted text clipped - 10 lines]
>not concerned it wouldn't pull up in time or slide, but the computer
>probably knew best...
Thanks Tony.
That last part;
> I didn't like the
>feeling - as I was longer controlling the inputs to the car and I was
>not concerned it wouldn't pull up in time or slide
Should that be read no longer controlling and was concerned?
I know that is always my fear of "these modern fangled things".
I do not doubt that I will come around eventually. After all I manage to
live with ABS, seatbelts, syncromesh gear boxes, & indicator lights :-)
Pete

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<iowna156@rustclubalfa.com>
156 2.0 TS (2001) - Proteo Rosso
Tony Rickard - 17 Dec 2005 16:54 GMT
> That last part;
>
[quoted text clipped - 6 lines]
> I do not doubt that I will come around eventually. After all I manage to
> live with ABS, seatbelts, syncromesh gear boxes, & indicator lights :-)
It meant I wasn't concerned before the VDC cut in that I wasn't going to
stop or make the bend under braking. However, the computer took over and
I felt something of a passenger as I wibbly wobbled to a stop. I didn't
like the feel because I am a bit of a control freak but I couldn't fault
the distance the car took to pull up without sliding.
The main difference is the computer can do things any driver can't -
like individually brake each wheel. So the result is a different feel to
anything I have been in before as the car corrects its yawing motion
many times in a couple of seconds and can defy the smoothness required
to correct a car by driver inputs.
Maybe it was the fact the computer lacks my conviction in my driving
abilities that I didn't like :)
Regarding your concern over the computer driving in two and a half years
it has only cut in twice - both when having to brake hard mid bend. In
even quite aggressive driving it has never noticeably been activated. I
could see why you would want it turned off on a race track but for even
very spirited road use I would say it is better to have it than not -
just in case!
Cheers
Tony
Stephen Poley - 17 Dec 2005 15:53 GMT
>>I fancy a car with ESP though - one that slows down when it senses that
>>the driver ahead is about to do something stupid. ;-) More seriously,
[quoted text clipped - 12 lines]
>pressure to ease off gently as car begins to move off from a hill start
>etc.,
Thanks for that. With a bit more hunting I came up with this pretty
decent description of VDC (towards the bottom of the page, readable once
one has overridden the stupid tiny text):
http://www.italiancar.com.au/pilot/feature011.htm

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Stephen Poley
Pete - 17 Dec 2005 16:14 GMT
>Thanks for that. With a bit more hunting I came up with this pretty
>decent description of VDC (towards the bottom of the page, readable once
>one has overridden the stupid tiny text):
>
>http://www.italiancar.com.au/pilot/feature011.htm
Must confess that looking through an Oz site about a Crosswagon would
not have occurred to my Euro-centric brain.
Found, copied and pasted into a textpad. Soo much easier to read in
10point courier :-) It even makes a good read now.
Credit to the author.
Pete

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<iowna156@rustclubalfa.com>
156 2.0 TS (2001) - Proteo Rosso
Stephen Poley - 17 Dec 2005 19:55 GMT
>>Thanks for that. With a bit more hunting I came up with this pretty
>>decent description of VDC (towards the bottom of the page, readable once
[quoted text clipped - 7 lines]
>10point courier :-) It even makes a good read now.
>Credit to the author.
Try the Opera browser - switch off the site-author's styling at the
touch of a key and miraculously (almost) all pages become readable. It's
free now as well.

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Stephen Poley
Pete - 17 Dec 2005 21:16 GMT
>Try the Opera browser - switch off the site-author's styling at the
>touch of a key and miraculously (almost) all pages become readable. It's
>free now as well.
It is on the Desktop. Right click seemed quicker ;-)
Pete

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<iowna156@rustclubalfa.com>
156 2.0 TS (2001) - Proteo Rosso
On Sat, 17 Dec 2005 09:57:02 +0100, Stephen Poley
<sbpoleySpicedHamTrap@xs4all.nl> selected combat throttle and flew
into a dogfight with:
>I fancy a car with ESP though - one that slows down when it senses that
>the driver ahead is about to do something stupid. ;-) More seriously,
You mean one that senses a speedtrap or *safety* camera ahead?
>I'm a bit confused about ESP and VDC. Are they the same thing, and what
>exactly do they do? Google reveals lots of mentions, but I failed to
>find a decent description.
They are the same thing. My 156 has VDC, but the gubbins on the
bulkhead is marked ESP!
VDC - vehicle dynamic control
ESP - electronic stability program
A friend with a Zafira got his ABS upgraded to ESP with a simple
software upgrade at the dealers (cost a bit though).
--
Max Reheat (:o) - deselect Part Throttle Reheat to reply.
Alfa 156 2.0 JTS Selespeed Veloce
Lancia Dedra 1.8i.e.SE
Tony Rickard - 17 Dec 2005 16:35 GMT
Max Reheat <]###[= wrote:
> They are the same thing. My 156 has VDC, but the gubbins on the
> bulkhead is marked ESP!
>
> VDC - vehicle dynamic control
> ESP - electronic stability program
As I understand it my 156 has both. ESP is a button by the gear lever
and switches off traction control. VDC is on at all times and works with
the ABS system.
Cheers
Tony
Tony Rickard - 18 Dec 2005 13:41 GMT
> Max Reheat <]###[= wrote:
>
[quoted text clipped - 10 lines]
> Cheers
> Tony
Ok so I was wrong :) - just looked and the button by the gear lever says
ASR which is the traction control. Only had the car 30 months!
Stephen Poley - 17 Dec 2005 19:46 GMT
>On Sat, 17 Dec 2005 09:57:02 +0100, Stephen Poley
><sbpoleySpicedHamTrap@xs4all.nl> selected combat throttle and flew
[quoted text clipped - 4 lines]
>
>You mean one that senses a speedtrap or *safety* camera ahead?
I was actually thinking more of the driver who slows down, moves over to
the nearside kerb and then, without a glance in his mirrors (let alone
use of indicator) suddenly pulls right across the road just in front of
you.
>>I'm a bit confused about ESP and VDC. Are they the same thing, and what
>>exactly do they do? Google reveals lots of mentions, but I failed to
>>find a decent description.
>
>They are the same thing. My 156 has VDC, but the gubbins on the
>bulkhead is marked ESP!
LOL. Sounds like another last-minute change of mind by the Marketing
Manager!
>VDC - vehicle dynamic control
>ESP - electronic stability program
>
>A friend with a Zafira got his ABS upgraded to ESP with a simple
>software upgrade at the dealers (cost a bit though).
That's a bit weird. As I understand the page I quoted earlier, VDC
requires a yaw detector. So what gives?
- the Zafira's ESP isn't really ESP?
- it was a hardware upgrade as well as software?
- the Zafira comes with ESP fitted as standard but disabled? (and the
dealer charges 500 pounds for work which cost him tenpence?)

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Stephen Poley
Pete - 17 Dec 2005 21:17 GMT
>- the Zafira comes with ESP fitted as standard but disabled? (and the
>dealer charges 500 pounds for work which cost him tenpence?)
They ain't built by AR you know <LOL>
Pete

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<iowna156@rustclubalfa.com>
156 2.0 TS (2001) - Proteo Rosso