C7 to offer 8 speed auto & 7 speed manual
Aisin to build A8 and ZF to build 7 speed
manual according to latest info from LSX-tv.com |
Originally Posted by VNAMVET
(Post 1582380922)
Asin to build A8 and ZF to build 7 speed
manual according to latest info. |
Originally Posted by VNAMVET
(Post 1582380922)
Asin to build A8 and ZF to build 7 speed
manual according to latest info. |
Originally Posted by BlueOx
(Post 1582380936)
And that info is where?
Info was just received via cell phone message. According to Motor Trend, GM has found itself in a bit of a bine regarging it's next generation transmissions for the up coming C7 Corvette. Their own in-house units is not quite ready yet, so the General has outsourced the work to Aisin. |
Originally Posted by You_Vette_Your_Ass
(Post 1582380946)
Awesome avatar. I wonder how many commanders Betrayus relieved for the same things he did?
|
What country is Aisin out of?
-Alex |
Which is worse? A one-year Aisin eight-speed unit, or a one-year carryover GM six-speed unit?
.Jinx |
Originally Posted by Jinx
(Post 1582381566)
Which is worse? A one-year Aisin eight-speed unit, or a one-year carryover GM six-speed unit?
.Jinx |
Originally Posted by Jinx
(Post 1582381566)
Which is worse? A one-year Aisin eight-speed unit, or a one-year carryover GM six-speed unit?
.Jinx As to the old C6 tranny, that assumes the existing tranny could be modified in time to fit the new engine, chassis, etc. Neither option is good, especially from a marketing standpoint. |
Originally Posted by Dominic Toretto
(Post 1582381452)
What country is Aisin out of?
-Alex |
Here's an article on the ZF 7-speed manual that they built for Porsche:
http://www.greencarcongress.com/2012...-20120511.html Fascinating fact: On Porsche's implementation, the engine shuts off as soon as you shift into neutral and release the clutch. |
Originally Posted by BlueOx
(Post 1582381692)
If the Aisin is fabulous, people will whine for years that they couldn't get it. If it is crap, people will whine for years that they were forced to get it. The first year whammy is going to last forever on CF!
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I like the idea of both of those, but as BlueOx mentioned, this really seems like a bad move on GM's part. I am hoping this is just a rumor!
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Lexus IS F transmission quote
By far my favorite aspect of the IS F however - and I can't believe I'm about to say this - is the automatic transmission. Not because it has eight gears - but because it's the closest thing to a dual personality gearbox currently available. Forget the sequential manuals. They're great in manual mode, but bad in auto mode. The dual clutch systems are better, playin' automatic very convincingly, but they disappoint in manual mode with a less-than-smooth getaway. The IS F gearbox utilizes its torque converter straight off the line for smoothness, and then locks out second through eighth gears to feel like a true manual. And its shifts in manual mode are amazingly quick, with an audible "beeeep" alerting you to pull the paddle back just before you tap into the rev limiter - very cool. This is truly one of the best gearboxes in the world. |
7 speed review in 911
The seven-speed manual shift pattern is that of a six-speed but with the seventh forward gear up and to the right; it is of no use beyond its function as a tall, fuel-saving ratio for highway cruising. The gates are very tightly spaced way over there, so Porsche blocks out seventh electronically unless you first select fifth or sixth. People will reflexively complain about electro-nanny tyranny, and some forum poster somewhere will surely tell you how to disable the lockout, but that would be silly. That’s because, unlike GM’s one-to-four skip-shift, which exists solely to help the car’s fuel-economy test numbers, this lockout is for driver convenience. Porsche found in testing that it was far too easy to accidentally select seventh when you’re intending to upshift into fifth. As soon as you get fifth, the lockout deactivates. After probing its function a few times, we ceased to notice it. The Carrera S still accelerates up hills in seventh, but the base Carrera probably won’t do so much quicker than water. |
Originally Posted by BMWDAD
(Post 1582382084)
Lexus IS F transmission quote
By far my favorite aspect of the IS F however - and I can't believe I'm about to say this - is the automatic transmission. Not because it has eight gears - but because it's the closest thing to a dual personality gearbox currently available. Forget the sequential manuals. They're great in manual mode, but bad in auto mode. The dual clutch systems are better, playin' automatic very convincingly, but they disappoint in manual mode with a less-than-smooth getaway. The IS F gearbox utilizes its torque converter straight off the line for smoothness, and then locks out second through eighth gears to feel like a true manual. And its shifts in manual mode are amazingly quick, with an audible "beeeep" alerting you to pull the paddle back just before you tap into the rev limiter - very cool. This is truly one of the best gearboxes in the world. http://www.hopperhome.com/Poop1.JPG |
Originally Posted by CaryKen
(Post 1582381917)
Fascinating fact: On Porsche's implementation, the engine shuts off as soon as you shift into neutral and release the clutch.
That feature can be deselected. |
ZF did the C4 ZR-1 transmission, if I'm not mistaken. It's centuries ago, so I guess it's just a fun fact.
I still can't figure out why I need 7 speeds. Not that I've tried very hard. |
Originally Posted by Notch
(Post 1582382610)
That feature can be deselected.
It's too bad that deselection couldn't occur on the order form. |
Originally Posted by BlueOx
(Post 1582381692)
Another GM screw-up that is a no-win situation.
There isn't anything I've seen that says they can't stick with the Aisen unit if it works well. Well, there is one alternative. Buy a manual. It's a sports car. Michael |
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