DCT question
Le Mans Master
Joined: May 2010
Posts: 7,756
Likes: 173
From: Ventura CA
Melting Slicks
Joined: Apr 2005
Posts: 3,312
Likes: 72
From: East Amherst NY
Melting Slicks
Joined: Aug 2010
Posts: 3,063
Likes: 82
From: Tumwater, WA
DCTs weigh around 150 lbs. and the cost difference between a manual car and a DCT is the same as the slush box, around 1200 dollars. 0 -60 in cars that have both is a difference of something like .3 secs in favor of the DCT. Now the main thing is finding one that will fit the vette and handle the TQ.
Better fuel economy (up to 15% improvement) than conventional planetary geared automatic transmission (due to lower parasitic losses from oil churning) and for some models with manual transmissions;
No loss of torque transmission from the engine to the driving wheels during gear shifts;
Short up-shift time of 8 milliseconds when shifting to a gear the alternate gear shaft has preselected;
Smooth gear-shift operations;
Consistent down-shift time of 600 milliseconds, regardless of throttle or operational mode
If they can find a good one for the vette, Id bite.
Better fuel economy (up to 15% improvement) than conventional planetary geared automatic transmission (due to lower parasitic losses from oil churning) and for some models with manual transmissions;
No loss of torque transmission from the engine to the driving wheels during gear shifts;
Short up-shift time of 8 milliseconds when shifting to a gear the alternate gear shaft has preselected;
Smooth gear-shift operations;
Consistent down-shift time of 600 milliseconds, regardless of throttle or operational mode
If they can find a good one for the vette, Id bite.
Last edited by S'vette; Jun 10, 2013 at 08:09 PM.
Melting Slicks
Joined: May 2004
Posts: 2,412
Likes: 137
Makes an insinuation and then hides behind the plain meaning. That's the mark of some cunning wit. I am salivating at the thought of what gems you intend to serve up next.
Pro
Joined: Mar 2013
Posts: 742
Likes: 154
From Road and Track:
"The keys to the C6.R's speed are its light 2750-lb. dry weight, sticky Michelin race slicks, big steel brakes (carbon rotors aren't allowed), some true aerodynamic downforce and the 6-speed Xtrac transaxle, a $70,000 paddle-shift unit that allows for flat-foot error-free upshifts and perfect-blip downshifts, every time. "
http://www.roadandtrack.com/car-revi...-corvette-c6-r
For a street car, I think the dual clutch is pretty much the optimal solution for those looking for pure speed. If you crave driver involvement, the traditional manual would probably be more to your liking (I'm in this camp). I think the torque converter based automatic, while potentially smoother than the dual clutch around town, will gradually be replaced by the DCT. I fear that may also happen to the stick shift (as it has in most supercars and in the new 911 GT3), but I hope not.
GM will eventually offer a DCT for their cars, I am sure. It's just a matter of when. Maybe something mid way through the life of the C7 (in time for the Z's?). I would imagine that it would certainly happen by the time the C8 is ready. Both Cadillac and the Vette will need one to compete with the likes of BMW, Audi, MB, and Porsche, especially in Europe.
-T
"The keys to the C6.R's speed are its light 2750-lb. dry weight, sticky Michelin race slicks, big steel brakes (carbon rotors aren't allowed), some true aerodynamic downforce and the 6-speed Xtrac transaxle, a $70,000 paddle-shift unit that allows for flat-foot error-free upshifts and perfect-blip downshifts, every time. "
http://www.roadandtrack.com/car-revi...-corvette-c6-r
For a street car, I think the dual clutch is pretty much the optimal solution for those looking for pure speed. If you crave driver involvement, the traditional manual would probably be more to your liking (I'm in this camp). I think the torque converter based automatic, while potentially smoother than the dual clutch around town, will gradually be replaced by the DCT. I fear that may also happen to the stick shift (as it has in most supercars and in the new 911 GT3), but I hope not.
GM will eventually offer a DCT for their cars, I am sure. It's just a matter of when. Maybe something mid way through the life of the C7 (in time for the Z's?). I would imagine that it would certainly happen by the time the C8 is ready. Both Cadillac and the Vette will need one to compete with the likes of BMW, Audi, MB, and Porsche, especially in Europe.
-T
Safety Car
Joined: Jun 2004
Posts: 4,430
Likes: 81
From: Whidbey Island WA
As to the virgin talking about sex, it is what every single DCT thread so far has devolved into on C7 and I'm not exactly holding my breath in an expectation of change now.
Edit... I've edited this to remove a needless insult. It isn't that you've not earned it, it serves no purpose. Good Evening.
Last edited by crabman; Jun 10, 2013 at 11:11 PM.
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Race Director
Joined: Jun 2001
Posts: 10,084
Likes: 3,055
From: CA
What's with all this bad behavior?
Of course, a DCT is also Sequential. It's a subset of the Sequential gearbox family. Sequential means you cannot randomly access gears, without going through other gears "sequentially" in order of gear number.
Michael
Of course, a DCT is also Sequential. It's a subset of the Sequential gearbox family. Sequential means you cannot randomly access gears, without going through other gears "sequentially" in order of gear number.
Michael
Le Mans Master
Joined: Mar 2002
Posts: 6,359
Likes: 163
From: Concord NC
A sequential can be a DCT or not and a DCT can be sequential or not. Saying "It is a sequential, not a DCT" isn't just a semantics issue, it doesnt work. Its wrong. Talk about not being bright. lol I already explained it before you even posted the first time which someone a little quicker on the uptake would have noted before they posted the first time let alone this second failure. Again, are you even reading what people write?
As to the virgin talking about sex, it is what every single DCT thread so far has devolved into on C7 and I'm not exactly holding my breath in an expectation of change now.
Edit... I've edited this to remove a needless insult. It isn't that you've not earned it, it serves no purpose. Good Evening.
As to the virgin talking about sex, it is what every single DCT thread so far has devolved into on C7 and I'm not exactly holding my breath in an expectation of change now.
Edit... I've edited this to remove a needless insult. It isn't that you've not earned it, it serves no purpose. Good Evening.
Safety Car
Joined: Jun 2004
Posts: 4,430
Likes: 81
From: Whidbey Island WA
You're right rezone. Irritation at yet another thread which will turn into a bunch of fanboys arguing over something they have never tried or have any first hand knowledge of kicked my annoyance meter into high gear before I even clicked the thread. It didn't take long to run into a post which was incorrect and that irritation spilled over into my first response in this thread. You didn't deserve that and I'm sorry, more so because in your case while what you posted was incorrect I believe you know that and simply misspoke yourself. You should be aware that all my comments after Bulldog are in response to him, not you.
As to Bulldog he threw down without reading the material and thats never going to be pretty.
As to Bulldog he threw down without reading the material and thats never going to be pretty.
Melting Slicks
Joined: May 2004
Posts: 2,412
Likes: 137
You're right rezone. Irritation at yet another thread which will turn into a bunch of fanboys arguing over something they have never tried or have any first hand knowledge of kicked my annoyance meter into high gear before I even clicked the thread. It didn't take long to run into a post which was incorrect and that irritation spilled over into my first response in this thread. You didn't deserve that and I'm sorry, more so because in your case while what you posted was incorrect I believe you know that and simply misspoke yourself. You should be aware that all my comments after Bulldog are in response to him, not you.
As to Bulldog he threw down without reading the material and thats never going to be pretty.
As to Bulldog he threw down without reading the material and thats never going to be pretty.
"Sequential" is a colloquialism for a single clutch sequential manual transmission. 1st Gen Aston Martin Vanquish, BMW SMG, Ferrari F1, Lamborghini E-Gear. Nobody calls a dual clutch a "sequential". They're called by their trade name (DCT, DSG, PDK)
Melting Slicks
Joined: Nov 2007
Posts: 2,240
Likes: 51
From: South Carolina
You're right rezone. Irritation at yet another thread which will turn into a bunch of fanboys arguing over something they have never tried or have any first hand knowledge of kicked my annoyance meter into high gear before I even clicked the thread. It didn't take long to run into a post which was incorrect and that irritation spilled over into my first response in this thread. You didn't deserve that and I'm sorry, more so because in your case while what you posted was incorrect I believe you know that and simply misspoke yourself. You should be aware that all my comments after Bulldog are in response to him, not you.
As to Bulldog he threw down without reading the material and thats never going to be pretty.
As to Bulldog he threw down without reading the material and thats never going to be pretty.
This is a car message board, not an English class. What I (and probably most of the other users) took from the OP's question was...
"Does the C6R use those flappy-paddle auto-clutched trannies like Ferrari and Lamborghini and why can't they put one of those in a C7 instead of a typical automatic?"
As far as your pretentious comments about basically everyone that isn't you, It is actually possible to have objective knowledge of a mechanical device without having ever actually possessed it...
It is ALSO possible to educate someone without reminding everyone of your prior ownership of the aforementioned device and how said ownership makes you the only one actually qualified to do the educating.
Safety Car
Joined: Jun 2004
Posts: 4,430
Likes: 81
From: Whidbey Island WA
It was wrong, whether you admit it or not does not change the fact that it was wrong. As I already told him I'm sure it was just a matter of semantics and while he knew what he was about the wording was wrong. Were I to throw a barb every time thats done I would not be long in finding one of them planted in my own ***. I owed him an apology and he got one because my commentary was entirely undeserved.
You on the other hand were wrong and willfully so but apparently lack the manhood to admit it. We are not going to agree here so I'll leave the last word to you.
You on the other hand were wrong and willfully so but apparently lack the manhood to admit it. We are not going to agree here so I'll leave the last word to you.
Melting Slicks
Joined: May 2004
Posts: 2,412
Likes: 137
It was wrong, whether you admit it or not does not change the fact that it was wrong. As I already told him I'm sure it was just a matter of semantics and while he knew what he was about the wording was wrong. Were I to throw a barb every time thats done I would not be long in finding one of them planted in my own ***. I owed him an apology and he got one because my commentary was entirely undeserved.
You on the other hand were wrong and willfully so but apparently lack the manhood to admit it. We are not going to agree here so I'll leave the last word to you.
You on the other hand were wrong and willfully so but apparently lack the manhood to admit it. We are not going to agree here so I'll leave the last word to you.
Also, nice to leave a parting shot about my manhood. What tells you I'm a man, anyhow?
Last edited by 4GS7; Jun 11, 2013 at 01:54 PM.
Burning Brakes
Joined: Feb 2013
Posts: 831
Likes: 1
From: N Jury
Who cares if someone was wrong in a statement
Only on the interweb are people treated so poorly.
No DCT for the corvette c7 is the partyline
Wish it did but it doesn't
Deal with it or don't
Preferably like a gentleman
Only on the interweb are people treated so poorly.
No DCT for the corvette c7 is the partyline
Wish it did but it doesn't
Deal with it or don't
Preferably like a gentleman
Le Mans Master
Joined: Dec 2004
Posts: 5,492
Likes: 807
From: West coast CA
Horses for courses
People gripe about the agonies of having 3 pedals - imagine no synchromesh and straight-cut gears. Endless grinding, graunching, and stalling, and a whine reminiscent of an old UPS truck.
