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Will the ME have a DCT

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Old 11-15-2017, 03:48 PM   #21
rgregory
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Originally Posted by vetteman41960 View Post
I also owned a Gallardo. The issues with the single
clutch are that first there is the issue of premature wear. I had to spend 6k for a new clutch in the Gallardo at 9k miles.
In addition it absolutely horrible in auto mode very clunky and unpleasant to drive in auto mode.

Then there is the delay from a dead stop while the clutch engaged. The hesitation drove me nuts.

Also having to baby the clutch to prevent premature wear. As you know that at a stop you either put the car in neutral by pulling both paddles back or if you stopped for more than 10 second with your foot on the brake the computer will out the car in neutral.
I was speaking the outright shift speed. In sport mode the shift speed of the Gallardo a first generation single clutch SMG is still good and probably withing 40-50 MS of a DCT. If the Aventador can shift basically as fast as a DCT with a single clutch it can be done without the whole DCT complexity.

The quirkiness of the e-gear is worked out with refinement. Mine went 24k miles on the original clutch and has 34k on the current later gen clutch that is supposed to last much longer than the original. I have driven M3s with SMG and yes it was worlds better in refinement than egear.
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Old 11-15-2017, 08:26 PM   #22
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I went from an A8 GS to a PDK Porsche. There is no comparison. Whether city cruising or driving aggressively the PDK is faster, smoother and way more enjoyable. The C7 & C8 need a good DCT. Might make me switch back.
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Old 11-15-2017, 08:39 PM   #23
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Originally Posted by rgregory View Post
But I honestly donít feel DCT is anymore than a paper bragging point. My Gallardo is just a single clutch and it shifts pretty fast and is fun. You are talking millisecond, maybe 0.04 seconds quicker to 60 with a DCT vs a single clutch (assuming 1 shift). I would prefer a good single clutch with good longevity to a complicated DCT.
You Gallardo does not have a automatic tranny. It is a computer assisted manual tranny. It has a regular clutch.
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Old 11-15-2017, 08:41 PM   #24
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Questions for those who know:

Why wouldn't GM use a version of the A10 already used in the Camaro?

How does that A10 stack up against a proper DCT?

I haven't driven the A10 or any DCT for that matter, and my M2 has the manual, but I agree with one of the posters above that a racey auto trans could be tons of fun.
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Old 11-16-2017, 09:04 AM   #25
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I hope that the magnetorheologic patents that GM holds for use in an automotive clutch are deployed on this car for drivers that don't want a stick shift.

The MR clutch has infinite adjustability and sub-second reaction times and 1 moving part....that doesn't wear out.
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Old 11-16-2017, 10:16 AM   #26
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Originally Posted by dexterkatt View Post
You Gallardo does not have a automatic tranny. It is a computer assisted manual tranny. It has a regular clutch.
Um when did I ever say it had an automatic? I know what kind of transmissions are in my cars.
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Old 11-16-2017, 10:39 AM   #27
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Quote:
Originally Posted by Jackie Chiles View Post
Questions for those who know:

Why wouldn't GM use a version of the A10 already used in the Camaro?

How does that A10 stack up against a proper DCT?

I haven't driven the A10 or any DCT for that matter, and my M2 has the manual, but I agree with one of the posters above that a racey auto trans could be tons of fun.
Thereís this guy Mike who has a YouTube page called StreetSpeed717, you may have heard of him or seen his crazy wrapped Corvettes. He has a Z06 with the automatic and his buddy who also has a YouTube channel owns a 10-Speed ZL1. Everyone who has been in both cars agrees that the 10-Speed is better in every aspect. The paddles are instant in response, you can barely feel the shifts, it is always in the power band, and itís just smooth. Mike recently purchased a McLaren 570s, a car that comes with a biturbo v8 and a DCT. He says that the dual Clutch is leagues above his 8-Speed and that it shifts quicker than anything heís ever been in. He also said that itís smooth and feels far more refined than the torque converter autos and that it felt like a racecar, and that means a lot considering that his C7 Z06 is used for drag racing and has 800+lb ft of torque at the wheels. I have very little knowledge on the mechanics and design of a transmission, but could GM turn their 10-Speed into a DCT? That would be better than a Porsche PDK.

Last edited by Quinten33; 11-16-2017 at 10:41 AM.
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Old 11-16-2017, 10:47 AM   #28
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Originally Posted by Quinten33 View Post
Thereís this guy Mike who has a YouTube page called StreetSpeed717, you may have heard of him or seen his crazy wrapped Corvettes. He has a Z06 with the automatic and his buddy who also has a YouTube channel owns a 10-Speed ZL1. Everyone who has been in both cars agrees that the 10-Speed is better in every aspect. The paddles are instant in response, you can barely feel the shifts, it is always in the power band, and itís just smooth. Mike recently purchased a McLaren 570s, a car that comes with a biturbo v8 and a DCT. He says that the dual Clutch is leagues above his 8-Speed and that it shifts quicker than anything heís ever been in. He also said that itís smooth and feels far more refined than the torque converter autos and that it felt like a racecar, and that means a lot considering that his C7 Z06 is used for drag racing and has 800+lb ft of torque at the wheels. I have very little knowledge on the mechanics and design of a transmission, but could GM turn their 10-Speed into a DCT? That would be better than a Porsche PDK.
If GM goes the DCT route their best bet would be to source a DTC from a manufacturer that already makes them, McLaren doesn't make their own transmissions.

I drove a 570s and loved it, the transmission is worlds ahead in refinement than my Gallardo. In general the 570 as a whole made my car feel old.
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Old 11-17-2017, 08:45 PM   #29
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People seem to overlook that Tremec has had a DCT for years:

http://www.tremec.com/anexos/Literat...ansmission.pdf

I would suspect that this was meant for the C7 (Z06 perhaps?) but cut due to costs.
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Old Today, 06:34 AM   #30
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outsource and run the latest audi/gallardo gear box

it's down to under 10k, and while that's more expensive that the gm crap, it's proven, and not that much

and retain the 6 spd with a ricardo box from the ford gt

get the numbers up and the cost will come down

gm doesn't need to make everything, they just need to find the best and integrate well
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