Is it true that auto cars cannot race?

n0x SG

to me... anything tt doesnt require me to use my left leg and shift the H formation at the gear box is considered auto.... with or without manual override...

to you anything using torque convertor is auto...

we juz have diff definations of it... Wink

uaremyfayth SG

I agree with Nox

HolySniper SG

and those with class 3a licenses can drive dsg cars.. Laughing

Pion SG

Just ask ah, how to downshift when racing using manual? Got optimum rpm thing or not?

AE86tofu SG

so u're telling me that a manual transmission which uses a friction plate clutch and has solenoids and actuators to release the clutch/shift its gears is considered an automatic transmission??? and that all F1 cars use a automatic transmission?? Laughing C'mon.... try telling that to the engineers and they'll laugh their socks off... it still rolls back on gentle slopes like a traditional manual unlike an automatic transmission where the car just stays at is position w/o applying any brakes or even crawls forward.....

AE86tofu SG

that i gotta agree with yea cos thats the loophole in the system....but they're gonna have trouble moving off a slope with a DSG or a SMG cos its gonna roll back like mad and real quickly Laughing

alleggerita SG

Bo bian lor..let it roll all the way down until reach level ground then move off again lor..LOL.. Laughing

Added: But I think there are a few sequential manual gearbox they purposely make it like an automatic (torque convertor) gearbox..meaning they make the SMG able to crawl forward while no throttle is applied like a true-blue automatic..

alleggerita SG

Have..matching the revs for a lower gear is for experienced drivers though..it's called blipping the throttle..some automatic gearboxes (read torque convertors) can blip throttle for you when you downshift using the manual override..one example is Aston Martin's ZF 6-speed auto 'box..Some sequential manual gearboxes will also blip for you when you downshift..

AE86tofu SG

no there isnt....if its running on a torque converter its a automatic...automatic gearboxes uses a planetary gear system wheras a manual tranny dosent...it uses a normal geartrain with synchros and dog clutches....a torque converter is always spinning which is fine in a auto tranny as it uses fluid pressure and brake bands to shift the gears and since the planetary gears are always in constant mesh theres no crashing of gears....try doing that in a manual and see what happens...which is why i say only autos run on a torque converter....

alleggerita SG

Read this article I got from http://www.autocar.co.uk/CarReviews/FirstDrives/Aston-Martin-Vantage-4.3-V8-Sportshift/223695/..this is prove that there is at least one automated manual transmission in the market that will creep forward like a torque convertor automatic transmission..

Read the "What's it like" section..

What is it?
The Vantage Sportshift is a V8 Vantage with a clutchless manual gearbox. It's a development of Magneti Marellis ubiquitous clutchless manual, which also features in the Vanquish and the Ferrari F430, among others. But Astons engineers have tweaked it to suit the character of the Vantages 4.3-litre V8. Gears are selected using steering wheel-mounted paddles, and there are three shift options. Sport offers a maximum shift speed of 240 milliseconds, which sounds fast until you consider that an F430 swaps cogs in 150 milliseconds. Comfort is designed to offer slower, smoother shifts and theres also a fully automatic mode.

What's it like?
Aston has designed some creep into the transmission in a bid to make the Vantage easier to manoeuvre at low speeds. In first gear, the car will creep forwards at up to 4mph, even if no throttle pressure is applied. This system works well, but other aspects of the gearboxs behaviour still need work. In automatic mode, the shift from first to second and from second to third is accompanied by an awkward jolt. Automated downshifts such as when the car approaches a junction are also accompanied by an uncomfortable shunting motion. Astons engineers promise improvements to the systems calibration before the Sportshift goes on sale in March. They are also considering altering the software to prevent the gearbox automatically changing up at 7000rpm, which could prove an irritation to track day enthusiasts. Sadly the transmission also does nothing to alleviate this cars biggest problem poor low to mid-range torque. A couple of detail improvements have also been introduced across the Vantage range. New Recaro seats are designed to accommodate those of a wider girth (Americans) and theres a natty mobile phone holder, but thats about it. The Vantages aesthetics have sensibly been left well alone.

Should I buy one?
There will be a £2995 premium for Sportshift, raising the Vantages price to £86,930. Pricey, yes, but not for an Aston especially one as gorgeous as this. If Aston can solve the gearbox's early problems, it will be a welcome addition to the range especially as there's no other auto option.

Cool-gal SG

all..
Laughing

AE86tofu SG

Originally posted by alleggerita:

Read this article I got from http://www.autocar.co.uk/CarReviews/FirstDrives/Aston-Martin-Vantage-4.3-V8-Sportshift/223695/..this is prove that there is at least one automated manual transmission in the market that will creep forward like a torque convertor automatic transmission..

Read the "What's it like" section..

What is it?
The Vantage Sportshift is a V8 Vantage with a clutchless manual gearbox. It's a development of Magneti Marellis ubiquitous clutchless manual, which also features in the Vanquish and the Ferrari F430, among others. But Astons engineers have tweaked it to suit the character of the Vantages 4.3-litre V8. Gears are selected using steering wheel-mounted paddles, and there are three shift options. Sport offers a maximum shift speed of 240 milliseconds, which sounds fast until you consider that an F430 swaps cogs in 150 milliseconds. Comfort is designed to offer slower, smoother shifts and theres also a fully automatic mode.

[b]What's it like?
Aston has designed some creep into the transmission in a bid to make the Vantage easier to manoeuvre at low speeds. In first gear, the car will creep forwards at up to 4mph, even if no throttle pressure is applied. This system works well, but other aspects of the gearboxs behaviour still need work. In automatic mode, the shift from first to second and from second to third is accompanied by an awkward jolt. Automated downshifts such as when the car approaches a junction are also accompanied by an uncomfortable shunting motion. Astons engineers promise improvements to the systems calibration before the Sportshift goes on sale in March. They are also considering altering the software to prevent the gearbox automatically changing up at 7000rpm, which could prove an irritation to track day enthusiasts. Sadly the transmission also does nothing to alleviate this cars biggest problem poor low to mid-range torque. A couple of detail improvements have also been introduced across the Vantage range. New Recaro seats are designed to accommodate those of a wider girth (Americans) and theres a natty mobile phone holder, but thats about it. The Vantages aesthetics have sensibly been left well alone.

Should I buy one?
There will be a £2995 premium for Sportshift, raising the Vantages price to £86,930. Pricey, yes, but not for an Aston especially one as gorgeous as this. If Aston can solve the gearbox's early problems, it will be a welcome addition to the range especially as there's no other auto option.[/b]

so what they did is tinker around with the software to let the slave pump slowly engage the friction clutch but i doubt that will work on moderate inclines....and yea theres no torque converter still so its still classified as a manual transmission

n0x SG

look... it doesnt matter what one calls it... some websites even call it semi auto or semi manual or whatever....

juz as long as we know what is the device between the crank and the transmission and know how to appreciate the diff can liaoz right..

alleggerita SG

Well, all I'm showing is that with software tinkering, it can behave like a torque convertor (except for smoothness of gearchanges).

Edited: To me, as long as a gearbox can shift gears by itself, I would think it's an automatic.. Mr. Green

AE86tofu SG

bro i think yea confused cos the torque converter is a fluid coupling wheras a friction clutch is not and a friction clutch can never behave like a torque converter cos it has no stator,impeller or turbine and more importantly a friction clutch does not multiply engine torque like a torque converter does and dont expect that software which allows the car to crawl on SMGs to work off road...another advantage of auto transmissions comapred to manuals. Cool

so that means to say that F1 gearboxes are automatics? Laughing since they can shift gears by themselves???

alleggerita SG

No, F1 gearboxes shift gears by themselves yes, but they need driver's input before they upshift/downshift..so that's semi-automatic..when I say automatic means not only it shifts gear by itself, it doesn't even need driver's input.. Laughing

And I know torque convertor mutiplies torque..I am not saying Aston Martin's SMG is a torque convertor, I am saying it CAN behave LIKE a torque convertor at idle because it creeps forward at idle LIKE a torque convertor..

AE86tofu SG

well in 2001 and 2002 their gearboxes allowed auto upshifts or downshifts if i'm correct till the FIA banned it so does that mean it behaves like an automatic??? Laughing

HyuugaNeji SG

Basically for the same car design and same engine and stuff,
1) the auto car will accelerate slightly slower than manual car from 0to100km/h.
2) the auto car's max top speed wont be as high as manual's but close.

However, it wont make much of a difference unless you are all pro racers.

« Previous Page