New Chrysler 300, Dodge Charger First To Get 8-Speed Automatic - MotorAuthority
:suspect:
p.s.
this thread's JUST for you, paul. :9:
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New Chrysler 300, Dodge Charger First To Get 8-Speed Automatic - MotorAuthority
:suspect:
p.s.
this thread's JUST for you, paul. :9:
In the late 40s/early 50s, GM had what amounted to an "infinite" automatic gearbox. Oldsmobile called it "Hydro-Matic" and Buick designated it "Dyna-Flow" IIRC. It essentially had no noticeable "gears". Maybe we're headed there again?
But, to answer your question: "With great amounts of cutting, fabricating and welding."
What about the CVT transmissions that a lot of the hybrids have? Wouldn't that be best for power and economy?
I'm not following what you mean on "infinite automatic gearbox"? Those two transmissions are quite different.Quote:
Originally Posted by BaadVR4
The early hydramatics had no torque converter, they had 3 planetaries and a fluid coupling(I've got one in the garage in the form of a 53 Pontiac). Dynaflow relied solely on a tq converter and yes it was extremely smooth, as in you couldn't feel them shift at all(they only had two forward gears though, where hydras had 4). Early hydramatics have no "park" setting. After you shut them down, you put it in reverse and it locks the driveline. People always flip out when they look at the selector in my Pontiac. Then they really flip when I tell them it has no oil filter, haha. :D
I'm fairly into old Pontiacs and Buicks, got one of each. :)
Jeremy
The problem is that "CVT" is a catchall term for many different kinds of transmissions, and so far most aren't reliable enough for the loads greater than produced by a dinky hybrid engine. another problem is that most CVTs have much higher power losses than traditional gears because they are friction-driven. This means heat (and thus reliability).Quote:
Originally Posted by 91stealthrt2
BINGO.Quote:
Originally Posted by i3igpete
which is why the evo's now have DCT's, not CVT's. and i'd be happy to put a DCT in there (paddle-shifters and all) if it was remotely feasible. unfortunately, it's about as simple as putting one of these 8-speeds in. (which is to say it's not).
So chicks must be pretty excited about this.
You are absolutely correct. I was commenting on the evolution of gear boxes having ever more speeds, with a touch of sarcasm about how we seem to be headed for a trans which would act like it had an "infinite" number of gears like the early GM units. I remember the advertising for the Buick Dyna-Flow in particular made a big deal out of the smooth application of power without any noticeable gear shifting.
Quote:
Originally Posted by HilbillyHomeboy
People can't even reliably swap the SSTs in the Evo, so good luck swapping it into something else. I test drove one of the SSTs, it sure is friggin sweet. If I had to commute into the city more often, I would have considered buying that instead, but the price penalty wasn't worth it, IMO.Quote:
Originally Posted by inperfectdarkness
*witty comeback* *sarcasm* *snide remark about the color green* *smiley flipping the bird*Quote:
Originally Posted by green-lantern
ZF of Germany recently announced a 9-Speed auto trans for transversal mounting. The 8-Speed that Chrysler will use in the Charger is also made by ZF.
Both transmissions are manufactured in the ZF plant in Greenville, SC.
The DCT in the Mitsubishi Evo is made by Getrag.
awesome. :)Quote:
Originally Posted by Tiberius
although to be perfectly honest, i don't think i'd need more than 6 gears. i'd shorten all of the existing gears (especially first), making 5th roughly equivalent to OD. i'd just have the 6th as an additional OD with gearing that would allow me to go past 200mph. :)
Are you planning on attending NG11?
that is the plan. that gives me ~4 months to finish. and i have a HELL OF A LOT to finish.
That is my plan...I'll take you for a ride in a performance built ATX.
deal. and if mine's done, i'll return the favor. just bring a second pair of underwear. :)
Give me a wide powerband and as few gears as possible with an auto. The 4spd in my truck has given me an appreciation for TC engines with an auto trans. 800lb ft of torque twisting a trans at peak power and never falling out of boost of power is a pretty sweet thing.
Also amusing to be in a truck that a Mustang GT cant shake while im finishing off a bottle of iced tea..lolol
Jason
gearing can really bump MPGs. just comparing same car with 4 and 5 speed auto, can tell alot.
so this will be the first domestic car to have 8speed auto?
Yep and rumors are the new 8hp tranny has a max tq limit of 738 LBS so I will still have plenty of room to mod my next Jeep SRT8.. Might even get 20mpg on the highway :DQuote:
Originally Posted by a2j