Seamless Shift Gearbox's

[nialloftara]

Nissan and Subaru have more CVT than traditional automatics, Toyota has some mostly the Prius but the corolla has one as an option. They are making a strong showing but are not yet more numerious than the old slusjbox. Here's the full list https://en.m.wikipedia.org/wiki/List_of ... nsmissions

[RobtheFiend]

Audi has stopped using their CVT gearbox.

[nialloftara]

But GM is gearing up(lol pun) to phase in cvts to many of its small and medium cars.

[Leonardo9613]

The biggest issue with CVT, as far as I know, and apart from the dullness, is the limited range of ratios possible in a CVT-box. The modern 8 and 9 speed units are capable of doing a wider range of ratios, therefore being capable of delivering lower RPM during cruising and faster acceleration due to shorter gearing. Also, their capacity to transfer torque is limited, so the use in high-performance vehicles is limited. (Williams' planned F1 CVT is wizardry )

[RobtheFiend]

The Audi CVT had/has a range on the variator chain of 2.40 - 0.40.
It had an additional 1.109 reduction in the gearbox. So the ratio should be 2.66 - 0.44.
The 6 speed Tremec T-56 gearbox used in the Viper has a ratio of 2.66 in first gear, 0.50 i 6:th gear.

Torque was limited to max 400nm. (The Viper has well over 740nm)

[Luilakkie]

A brand of tractors (http://www.fendt.com/choose_country.asp) exclusively sells CVT's because they increase the efficiency as it makes the engine operate in its most efficient range (appropiate to load and speed).

And they actually decrease complexity (modern tractors can have upwards of 30 gears). The only problem is that the cvt's need rebuilding after 8000 hours of operation. The transmissions can actually handle over 1500nm of torque.

I personally think cvt's should be in automation as they have been used in cars since before the game starts.

[Sayonara]

This is something I don't seem to be up to date on. Is it that automatics are changing, or are they being replaced wholesale by CVTs? I still see the term automatic being used almost exclusively to mean that, so I'm not sure what you mean, or where you're seeing this.

Being replaced wholesale; a CVT is more compact, gives better fuel efficiency, and is somewhat cheaper to manufacture than a traditional automatic, so many newer cars are offered with the choice of either a manual gearbox or a CVT.

"Automatic" is an odd word these days. Depending on where you get your license, it's entirely possible to earn it in a Nissan GT-R and get "automatic transmission only" put on it.

EDIT: back on topic, the seamless shift gearbox is a marvelous piece of engineering, but given that it exists almost purely to get around the ban on dual-clutch transmissions in Formula 1 it's not worth putting in the game. They'd all be using CVTs if those weren't banned too.

[Killrob]

In principle, CVTs are THE goto solution when it comes to gearboxes - with a bit more optimization and less friction losses they considerably outperform manual gearboxes too, dual-clutch too. Also it is the best example of "torque doesn't matter", as for maximum acceleration, the gearbox keeps the engine at peak power (not peak torque). Too bad they aren't as fun to drive :s

Anyway yes, CVT transmissions are planned but will be added much later in game development. Seamless: nope.

[RobtheFiend]

The sound a car will make around the test track with a CVT gearbox , a constant droning, like a mosquito. (yes they are a PAIN, up here in Scandinavia,in the summer)

[Sayonara]

The sound a car will make around the test track with a CVT gearbox , a constant droning, like a mosquito. (yes they are a PAIN, up here in Scandinavia,in the summer)

No, that is not a pain. Formula 1 Renault 3.5L V10 + CVT is a pain.

Williams actually did this (there's a video of the test on the internet) before CVTs were promptly banned by Formula 1 - reason being that the first team to actually develop a viable CVT for Formula 1 cars would wipe the floor with every other team.

[RobtheFiend]

I mean the mosquitos, not the gearboxes.

[willempjuh2000]

Dutch invention , and first used in a mass production car in the DAF 600

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