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Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
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sars
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Post by sars » Tue Dec 05, 2023 10:15 pm

tiglon, I humbly apologise sir :oops:
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Post by tiglon » Tue Dec 05, 2023 10:38 pm

sars wrote: Tue Dec 05, 2023 10:15 pm tiglon, I humbly apologise sir :oops:
I magnanimously accept :D
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Post by Pondrew » Wed Dec 06, 2023 12:39 am

Well I am in for the market for a new car (again).
The weapon of choice is an Audrey, which have the best (!) double clutch autos of any manufacturer (VAG did invent them after all).
But I want a manual. These are proving difficult to find but of the few available they are much cheaper than the equivalent auto. So a win-win for me (until sale time).

I have had a few autos over the past few years; from a bloody awful CVT, a ZF6 (not a fan) to a ZF8, but never a DCG. I thought I wanted to try one, but they are still automatics, doesn't matter how many clutches they have. I just don't like automatics, except for those (now very rare thankfully) times of being stuck on the M25 for miles in stop-start traffic.

I presume once the EV fully takes over, there will be no need for a gearbox at all. Just 'twist and go'! :(
All good things come to those who wait. I'm really impatient which explains a lot.

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Post by B21 » Wed Dec 06, 2023 10:11 am

sars wrote: Tue Dec 05, 2023 10:00 pm
tiglon wrote: Tue Dec 05, 2023 9:07 pm
B21 wrote: Tue Dec 05, 2023 8:52 pm Ahem its not an automatic its a double clutch gearbox..

Automatic being defined as a gearbox with multiple ratios operated without manual intervention with a torque converter..

Double clutch gearbox aka BMW DCT uses clutches not torque converter.. :thumbsup:

Obtuse but at one time important distinction.. :tumbleweed: :rofl:
:rofl: there is a rather grey area in the definition here.
"Automated manual" would perhaps be the most accurate description of DCT.

The latest definition of automatic transmission is often stated as per your description, but without the mention of torque converter at the end, so it would include DCT.
You are both mistaken, according to OED, Automatic:
Of a machine, appliance, etc.: that does not require an operator; that works by itself under fixed conditions, with little or no direct human control. Thus a torque converter type or DCT/DSG typ is an automatic, because they require that little or no human control requirement.

and for Manual:
Of work, an action, a skill, etc.: of or relating to the hand or hands; done or performed with the hands; involving physical rather than mental actions.

and thus there can not be an automatic manual, because that is contradictory, an automated manual transmission however......
Sars,

Since this was a specific discussion about E89 and E85 cars my terminology was based on what BMW calls their transmissions ..not a generalised catch all definition…

So ZF6HP and ZF8HP are called auto gearboxes , the DCT is called a twin clutch gearbox and the SMG is called a manual gear box :thumbsup:
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Post by sars » Wed Dec 06, 2023 11:01 pm

B21, If it looks like a duck, swims like a duck & quacks like a duck, it's a duck! You can call it a Mallard but it's still a duck :poke:
Gorgeous SFR Z4 M40i 8)
Gone 2017 Iridium SL400, 2015 435d xDrive Convertible, 2012 E350 CDi Convertible, 2010 DSB Z4 sdrive30i, 2008 Audi A4 Cabriolet, 2006 Phoenix Yellow Z4 2.5Si, 2003 Saab 9-3 Convertible

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Post by B21 » Wed Dec 06, 2023 11:47 pm

sars wrote: Wed Dec 06, 2023 11:01 pm B21, If it looks like a duck, swims like a duck & quacks like a duck, it's a duck! You can call it a Mallard but it's still a duck :poke:
Not if you were IBM….saw on the back of a 4341 ‘a bulk air moving device….I suspect you’d call it a fan…. :tumbleweed: :rofl:
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Post by Pondrew » Thu Dec 07, 2023 12:21 am

If it's got two pedals (unless you're a nutter like Marcoose) then it's an automatic. Call it what you want but it's an automatic as there is no manual clutch.

Flappy paddles don't make a car a manual, they just make it a different automatic.
All good things come to those who wait. I'm really impatient which explains a lot.

F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!

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Post by Mr Tidy » Thu Dec 07, 2023 12:34 am

Pondrew wrote: Thu Dec 07, 2023 12:21 am If it's got two pedals (unless you're a nutter like Marcoose) then it's an automatic. Call it what you want but it's an automatic as there is no manual clutch.
Exactly. :thumbsup:

A manual needs 3 pedals. Anything else is some sort of Auto, whatever sub-division of Auto you choose to put it in!
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Post by BMWZ4MC » Thu Dec 07, 2023 10:48 am

Pondrew wrote: Thu Dec 07, 2023 12:21 am If it's got two pedals (unless you're a nutter like Marcoose) then it's an automatic. Call it what you want but it's an automatic as there is no manual clutch.

Flappy paddles don't make a car a manual, they just make it a different automatic.
What if it has three pedals but you use only two? In the past (and most often with hire cars), I’ve taken great pleasure in driving a manual car without using the clutch except when pulling away or coming to a stop.

And what about my wife’s Mercedes which has three pedals, the third being a foot-operated parking brake?

Not that I’m being difficult :D
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Post by sars » Thu Dec 07, 2023 3:56 pm

As one of us is being pedantic (because they have a DCT), another question is, do electric cars have automatic transmissions? My understanding is no (with a few notable exceptions), as they have fixed gearing and selecting reverse just spins the electric motor the other way :thumbsup:
Gorgeous SFR Z4 M40i 8)
Gone 2017 Iridium SL400, 2015 435d xDrive Convertible, 2012 E350 CDi Convertible, 2010 DSB Z4 sdrive30i, 2008 Audi A4 Cabriolet, 2006 Phoenix Yellow Z4 2.5Si, 2003 Saab 9-3 Convertible

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Post by Pondrew » Thu Dec 07, 2023 4:11 pm

sars wrote: Thu Dec 07, 2023 3:56 pm as they have fixed gearing and selecting reverse just spins the electric motor the other way
Wow. That must mean a Tesla can do 0-60 in 4 secs backwards! :o :o :lol: :lol:
All good things come to those who wait. I'm really impatient which explains a lot.

F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!

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Post by brillomaster » Thu Dec 07, 2023 4:42 pm

sars wrote: Thu Dec 07, 2023 3:56 pm As one of us is being pedantic (because they have a DCT), another question is, do electric cars have automatic transmissions? My understanding is no (with a few notable exceptions), as they have fixed gearing and selecting reverse just spins the electric motor the other way :thumbsup:
im gonna say an EV has a transmission - but its neither automatic or manual. i'd just call it a fixed transmission.

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Post by B21 » Thu Dec 07, 2023 5:40 pm

brillomaster wrote: Thu Dec 07, 2023 4:42 pm
sars wrote: Thu Dec 07, 2023 3:56 pm As one of us is being pedantic (because they have a DCT), another question is, do electric cars have automatic transmissions? My understanding is no (with a few notable exceptions), as they have fixed gearing and selecting reverse just spins the electric motor the other way :thumbsup:
im gonna say an EV has a transmission - but its neither automatic or manual. i'd just call it a fixed transmission.
I think we should just say that all cars have transmissions and all Zeds have IC engines..that way it doesn't confuse anyone and everyone is happy :thumbsup: :rofl:

"A transmission (also called a gearbox) is a mechanical device which uses gears to change the speed or direction of rotation in a machine. Many transmissions have multiple gear ratios, but there are also transmissions that use a single fixed gear ratio"

If SARS can approve that we can all move on.. :tumbleweed: :headbang: :thumbsup: :rofl:
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Post by sars » Thu Dec 07, 2023 8:44 pm

It was not a question of whether electric cars have transmissions, they all do (I bet somewhere there is an exception of a direct drive vehicle), it is rather do we class them as an automatic? Pondrew, stated that if it has two pedals then it is an automatic, ergo electric cars are automatic, however, my assertion is that there is no method or requirement to change gear ratios, either with or without an operator, thus it is neither manual nor automatic!

Out of interest, Toyota have developed a simulated manual gearbox on an electric car to increase driver enjoyment and successfully they claim, all software driven
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Post by Pondrew » Thu Dec 07, 2023 10:34 pm

sars wrote: Thu Dec 07, 2023 8:44 pm Out of interest, Toyota have developed a simulated manual gearbox on an electric car to increase driver enjoyment and successfully they claim, all software driven
They also spent millions developing the hydrogen powered car....that doesn't seem to have got them anywhere (literally). :lol:
All good things come to those who wait. I'm really impatient which explains a lot.

F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!

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