Autocar confirmation of M-DCT

swamp2 · 05-30-2007, 10:07 AM

-7 gear, dual clutch
-Almost imperceptible shifts
-A "couple tenths" of off the 6MT 0-60
-Built by Getrag

http://www.autocar.co.uk/News/NewsAr...Series/225812/

CSL-Fanatik · 05-30-2007, 10:10 AM

Very cool,

I just wished this was offered at the beginning of the production. Also, the SMG was already fairly expensive, so I do not even want to think about the price of this new system.

If it goes into production in March, does this mean first M3s with the system will arrive in June?

Best regards,

CSL

GregW / Oregon · 05-30-2007, 10:59 AM

Quote:

Originally Posted by swamp2

-7 gear, dual clutch
-Almost imperceptible shifts
-A "couple tenths" of off the 6MT 0-60
-Built by Getrag

As I guessed 2 1/2 months ago: http://www.m3post.com/forums/showthread.php?t=56941. My reasoning was that it plenty robust enough, already on the market and by a manufacturer that BMW has used.

swamp2 · 05-30-2007, 12:01 PM

Quote:

Originally Posted by GregW / Oregon

As I guessed 2 1/2 months ago: http://www.m3post.com/forums/showthread.php?t=56941. My reasoning was that it plenty robust enough, already on the market and by a manufacturer that BMW has used.

You nailed it! But what were the real possbillities? The only ones were:

-Getrag
-ZF
-BMW in house (extremely unlikely)

mofomat · 05-30-2007, 12:17 PM

Quote:

Originally Posted by swamp2

-7 gear, dual clutch
-Almost imperceptible shifts
-A "couple tenths" of off the 6MT 0-60
-Built by Getrag

http://www.autocar.co.uk/News/NewsAr...Series/225812/

This isn't news. The info was distributed to dealers at least one month ago. Autocar have a habit of rehashing old news just to fill pages, and also stating the obvious. What is on there that wasn't already known?

swamp2 · 05-30-2007, 12:34 PM

Quote:

Originally Posted by mofomat

This isn't news. The info was distributed to dealers at least one month ago. Autocar have a habit of rehashing old news just to fill pages, and also stating the obvious. What is on there that wasn't already known?

I would say that both the Getrag as supplier and the couple of tenths off the 0-60 are both NEW pieces of the M-DCT puzzle. Correct me if I'm wrong.

mofomat · 05-30-2007, 01:43 PM

Quote:

Originally Posted by swamp2

I would say that both the Getrag as supplier and the couple of tenths off the 0-60 are both NEW pieces of the M-DCT puzzle. Correct me if I'm wrong.

No. It's been widely known that Getrag have been working on a double clutch gearbox for BMW for a while.

And a couple of tenths of the 0-60 is one of the benefits of using a double clutch gearbox so I see no surprise here.

josowski · 05-30-2007, 04:26 PM

Are we talking about a 4.4 sec 0-60 time?

epiphone3 · 05-30-2007, 04:48 PM

Interesting... I thought that the ZF-Sachs one would be in the M3. Curious to see what it will be like!

Garrett · 05-30-2007, 08:18 PM

Quote:

Originally Posted by josowski

Are we talking about a 4.4 sec 0-60 time?

My predicion is 4.3 sec!

ajj · 05-30-2007, 10:23 PM

actually, this i believe is the first time it has been "confirmed" by a reputable source. b/f was just a lot of speculation and guessing correctly.

GregW / Oregon · 05-30-2007, 11:26 PM

It should be pointed out that the Getrag DCT is not particularly light at 174 lbs dry--I'm guessing a 50 lb. penalty over the manual. That must be factored into the acceleration times.

KEY BENEFITS
Optimized efficiency
Shifting without interruption of traction
Excellent comfort
Very quick and sportive shiftings possible

KEY FEATURES
Max. Torque Capacity 600 Nm
Weight (dry) 79 kg
Installation length 660 mm
Synchronization:
1st, 2nd and 3th gear dual cone
4th and 5th gear single cone
6th, and 7th gear dual cone
Reverse gear single cone

Gear Spread Ratio 6,8
Max. Gross Vehicle Mass/Gross Trailer Mass 2500 kg/4500 kg
Shifter System hydraulic
Miscellaneous DCT dual clutch transmission

epiphone3 · 05-30-2007, 11:46 PM

Quote:

Originally Posted by GregW / Oregon

It should be pointed out that the Getrag DCT is not particularly light at 174 lbs dry--I'm guessing a 50 lb. penalty over the manual. That must be factored into the acceleration times.

KEY BENEFITS
Optimized efficiency
Shifting without interruption of traction
Excellent comfort
Very quick and sportive shiftings possible

KEY FEATURES
Max. Torque Capacity 600 Nm
Weight (dry) 79 kg
Installation length 660 mm
Synchronization
1st, 2nd and 3th gear dual cone
4th and 5th gear single cone
6th, and 7th gear dual cone
Reverse gear single cone

Gear Spread Ratio 6,8
Max. Gross Vehicle Mass/Gross Trailer Mass 2500 kg/4500 kg
Shifter System hydraulic
Miscellaneous DCT dual clutch transmission

looks like it has an oil pan on the bottom... could this be the demise of the "life time fill" on these trannies?

esquire · 05-31-2007, 12:49 AM

Quote:

Originally Posted by Garrett

My predicion is 4.3 sec!

my prediction is 1 second.. flat.

e36jakeo · 05-31-2007, 12:59 AM

Quote:

Originally Posted by GregW / Oregon

It should be pointed out that the Getrag DCT is not particularly light at 174 lbs dry--I'm guessing a 50 lb. penalty over the manual. That must be factored into the acceleration times.

KEY BENEFITS
Optimized efficiency
Shifting without interruption of traction
Excellent comfort
Very quick and sportive shiftings possible

KEY FEATURES
Max. Torque Capacity 600 Nm
Weight (dry) 79 kg
Installation length 660 mm
Synchronization:
1st, 2nd and 3th gear dual cone
4th and 5th gear single cone
6th, and 7th gear dual cone
Reverse gear single cone

Gear Spread Ratio 6,8
Max. Gross Vehicle Mass/Gross Trailer Mass 2500 kg/4500 kg
Shifter System hydraulic
Miscellaneous DCT dual clutch transmission

Let's hope the weight penalty is less than that. Straight-line accelleration will improve due to shorter shift times AND the shorter gearing allowed by a 7-speed (vs. the 6-speed manual).

1/4 mile in low 12s at 114 I'd say.

E36325is · 05-31-2007, 02:52 AM

The DSG version of the Golf V GTI is also abt 50lbs more but still it runs faster than the manual version from 0-100km, so 50lbs for the E92 M3 won't be sigificant.

M-DCT Yeah!!!!!

mofomat · 05-31-2007, 05:16 AM

Quote:

Originally Posted by ajj

actually, this i believe is the first time it has been "confirmed" by a reputable source. b/f was just a lot of speculation and guessing correctly.

Autocar are not a reputable source, although in this case what they're saying is probably true. Autocar are known to just make stuff up just to sell magazines.

E90Fleet · 05-31-2007, 05:16 AM

Quote:

Originally Posted by epiphone3

looks like it has an oil pan on the bottom... could this be the demise of the "life time fill" on these trannies?

The normal Auto's also have a oil pan at the bottom of the transmission.
It has nothing to do with the oil being lifetime fill

ajj · 05-31-2007, 11:53 AM

Quote:

Originally Posted by mofomat

Autocar are not a reputable source, although in this case what they're saying is probably true. Autocar are known to just make stuff up just to sell magazines.

funny..like chattin with a wall.

REP1KRR · 05-31-2007, 07:54 PM

Quote:

Originally Posted by Motor Authority.com

http://www.motorauthority.com/news/c...style-gearbox/
Co-developed with Getrag, the new gearbox will feature a shift lever like the one seen in the new X5 as well as the paddle shifters, and should offer faster and smoother acceleration than the conventional six-speed or the outgoing SMG.

This is what we have to look forward to?

mofomat · 05-31-2007, 08:14 PM

Quote:

Originally Posted by REP1KRR

This is what we have to look forward to?

Don't bank on it.

jpan08 · 05-31-2007, 09:53 PM

if the performance difference is that dramatic, then who's going to buy the first line of cars this fall? because a couple tenths is alot

05-30-2007, 10:07 AM	#1
swamp2 Lieutenant General 312 Rep 10,371 Posts Drives: E92 M3 Join Date: Sep 2006 Location: San Diego, CA USA iTrader: (1)	Autocar confirmation of M-DCT -7 gear, dual clutch -Almost imperceptible shifts -A "couple tenths" of off the 6MT 0-60 -Built by Getrag http://www.autocar.co.uk/News/NewsAr...Series/225812/
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05-30-2007, 10:10 AM	#2
CSL-Fanatik First Lieutenant 33 Rep 383 Posts Drives: e92 M3 DCT Join Date: May 2006 Location: Boulder iTrader: (0) Garage List 2008 BMW M3 [0.00] 2004 BMW M3 [0.00]	Very cool, I just wished this was offered at the beginning of the production. Also, the SMG was already fairly expensive, so I do not even want to think about the price of this new system. If it goes into production in March, does this mean first M3s with the system will arrive in June? Best regards, CSL
	Appreciate 0

05-30-2007, 04:26 PM	#8
josowski nil desperandum, illegitimi non caborundum 0 Rep 17 Posts Drives: 2004 M3 Join Date: Nov 2006 Location: Westlake Village, CA iTrader: (0)	M-DCT Are we talking about a 4.4 sec 0-60 time?
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05-30-2007, 04:48 PM	#9
epiphone3 Lieutenant Colonel 35 Rep 1,707 Posts Drives: 2013 BMW X3 35i Join Date: Oct 2005 Location: Calgary iTrader: (0)	Interesting... I thought that the ZF-Sachs one would be in the M3. Curious to see what it will be like!
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05-30-2007, 10:23 PM	#11
ajj Private First Class 3 Rep 163 Posts Drives: dct e92 m3 Join Date: Mar 2007 Location: san francisco, ca iTrader: (0)	actually, this i believe is the first time it has been "confirmed" by a reputable source. b/f was just a lot of speculation and guessing correctly.
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05-30-2007, 11:26 PM	#12
GregW / Oregon Commander-In-Chief 244 Rep 7,864 Posts Drives: 2015 M4 Coupe, 2012 ML350 Join Date: Nov 2005 Location: Lake Oswego, OR iTrader: (3) Garage List 2015 BMW M4 Coupe [1.83] 2012 Mercedes ML 350 [0.00]	Getrag DCT It should be pointed out that the Getrag DCT is not particularly light at 174 lbs dry--I'm guessing a 50 lb. penalty over the manual. That must be factored into the acceleration times. KEY BENEFITS Optimized efficiency Shifting without interruption of traction Excellent comfort Very quick and sportive shiftings possible KEY FEATURES Max. Torque Capacity 600 Nm Weight (dry) 79 kg Installation length 660 mm Synchronization: 1st, 2nd and 3th gear dual cone 4th and 5th gear single cone 6th, and 7th gear dual cone Reverse gear single cone Gear Spread Ratio 6,8 Max. Gross Vehicle Mass/Gross Trailer Mass 2500 kg/4500 kg Shifter System hydraulic Miscellaneous DCT dual clutch transmission __________________ Greg Lake Oswego, Oregon, USA 2015 M4 Coupe - Silverstone/Sakhir/CF 2012 ML350 Last edited by GregW / Oregon; 05-30-2007 at 11:50 PM.
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05-31-2007, 02:52 AM	#16
E36325is Second Lieutenant 11 Rep 220 Posts Drives: 1M coupe Join Date: Dec 2006 Location: Hong Kong iTrader: (0)	The DSG version of the Golf V GTI is also abt 50lbs more but still it runs faster than the manual version from 0-100km, so 50lbs for the E92 M3 won't be sigificant. M-DCT Yeah!!!!!
	Appreciate 0

05-31-2007, 09:53 PM	#22
jpan08 Second Lieutenant 3 Rep 209 Posts Drives: e36 M3, e92 M3, Triumph 675 Join Date: May 2007 Location: West Hartford, CT/ Boston, MA iTrader: (0)	if the performance difference is that dramatic, then who's going to buy the first line of cars this fall? because a couple tenths is alot
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