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      05-30-2007, 09:07 AM   #1
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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, 09:10 AM   #2
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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?

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CSL
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      05-30-2007, 09:59 AM   #3
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Getrag DCT

Quote:
Originally Posted by swamp2 View Post
-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.
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      05-30-2007, 11:01 AM   #4
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50% chance at worst

Quote:
Originally Posted by GregW / Oregon View Post
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)
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      05-30-2007, 11:17 AM   #5
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Quote:
Originally Posted by swamp2 View Post
-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?
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      05-30-2007, 11:34 AM   #6
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New

Quote:
Originally Posted by mofomat View Post
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.
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      05-30-2007, 12:43 PM   #7
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Quote:
Originally Posted by swamp2 View Post
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.
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      05-30-2007, 03:26 PM   #8
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M-DCT

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

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      05-30-2007, 03:48 PM   #9
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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, 07:18 PM   #10
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Quote:
Originally Posted by josowski View Post
Are we talking about a 4.4 sec 0-60 time?

My predicion is 4.3 sec!
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      05-30-2007, 09:23 PM   #11
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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, 10:26 PM   #12
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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
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Last edited by GregW / Oregon; 05-30-2007 at 10:50 PM..
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      05-30-2007, 10:46 PM   #13
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Quote:
Originally Posted by GregW / Oregon View Post
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?
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      05-30-2007, 11:49 PM   #14
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Quote:
Originally Posted by Garrett View Post
My predicion is 4.3 sec!
my prediction is 1 second.. flat.
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      05-30-2007, 11:59 PM   #15
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Quote:
Originally Posted by GregW / Oregon View Post
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.
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      05-31-2007, 01:52 AM   #16
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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!!!!!
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      05-31-2007, 04:16 AM   #17
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Quote:
Originally Posted by ajj View Post
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.
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      05-31-2007, 04:16 AM   #18
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Quote:
Originally Posted by epiphone3 View Post
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
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      05-31-2007, 10:53 AM   #19
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Quote:
Originally Posted by mofomat View Post
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.
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      05-31-2007, 06:54 PM   #20
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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?

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      05-31-2007, 07:14 PM   #21
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Quote:
Originally Posted by REP1KRR View Post
This is what we have to look forward to?

Don't bank on it.
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      05-31-2007, 08:53 PM   #22
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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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