SL55/63/65/R230 AMG: A step back !
05-05-2013, 07:25 AM
#1
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Thread Starter
A step back !
Whilst everyone is striving to put multi clutch gearboxes in their cars, why
Have MB gone back to a auto box when the previous SL 63 had a MCT box.
I imagine it's because it won't take the torque from the V8 TT engine.
Does that mean all the competitors have low torque engines. Mind you they
Have improved the action of the auto box, but still not as good as my previous
SL63 MCT box. Surely they can design a MCT box that will take the torque.
Have MB gone back to a auto box when the previous SL 63 had a MCT box.
I imagine it's because it won't take the torque from the V8 TT engine.
Does that mean all the competitors have low torque engines. Mind you they
Have improved the action of the auto box, but still not as good as my previous
SL63 MCT box. Surely they can design a MCT box that will take the torque.
05-05-2013, 08:17 AM
#2
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SL 55 and a GT 3000 vr4 Here's my car: http://home.online.no/~ludvs/index.cfm
Gearbox
I've heard that the double clutch add some weight, maybe that's why?
The new bmw with the dual gearbox has 500 lt ft, so it's a considereable lower output for the gearbox to handle.
So it may be easier for mb to make an tested and proven gearbox instead of designing a completely new dual clutch to handle 590 lt ft.
Did the mct gearbox in your old car shift as comfortable as in the new one?
The new bmw with the dual gearbox has 500 lt ft, so it's a considereable lower output for the gearbox to handle.
So it may be easier for mb to make an tested and proven gearbox instead of designing a completely new dual clutch to handle 590 lt ft.
Did the mct gearbox in your old car shift as comfortable as in the new one?
05-05-2013, 11:23 AM
#3
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AMG GTC Roadster, E63s Ed.1, M8 Comp. Coupe
Whilst everyone is striving to put multi clutch gearboxes in their cars, why
Have MB gone back to a auto box when the previous SL 63 had a MCT box.
I imagine it's because it won't take the torque from the V8 TT engine.
Does that mean all the competitors have low torque engines. Mind you they
Have improved the action of the auto box, but still not as good as my previous
SL63 MCT box. Surely they can design a MCT box that will take the torque.
Have MB gone back to a auto box when the previous SL 63 had a MCT box.
I imagine it's because it won't take the torque from the V8 TT engine.
Does that mean all the competitors have low torque engines. Mind you they
Have improved the action of the auto box, but still not as good as my previous
SL63 MCT box. Surely they can design a MCT box that will take the torque.
ZF's latest dual clutch can handle 516 lb/ft of torque, so not enough for the new 63...
05-05-2013, 01:20 PM
#4
Super Member
Whilst everyone is striving to put multi clutch gearboxes in their cars, why
Have MB gone back to a auto box when the previous SL 63 had a MCT box.
I imagine it's because it won't take the torque from the V8 TT engine.
Does that mean all the competitors have low torque engines. Mind you they
Have improved the action of the auto box, but still not as good as my previous
SL63 MCT box. Surely they can design a MCT box that will take the torque.
Have MB gone back to a auto box when the previous SL 63 had a MCT box.
I imagine it's because it won't take the torque from the V8 TT engine.
Does that mean all the competitors have low torque engines. Mind you they
Have improved the action of the auto box, but still not as good as my previous
SL63 MCT box. Surely they can design a MCT box that will take the torque.
05-05-2013, 01:50 PM
#5
Super Member
Thank you ! I was starting to Think I were mad.
The 2013 SL63 HAS A MCT GEARBOX wich is NOT a double clutch transmission like Porsche PDK, BMW DKG, Audi S-Tronic and many more.
IT'S AN UNIQUE KIND OF TRANSMISSION.
Basically that's a 7G-Tronic transmission where the traditional Torque converter has been replaced by a wet startup clutch.
Do not confuse it with the SLS amg transmission wich is a real Double clutch trans.
"The use of the exact terms is the most beautiful poetry"
Late French president François Mitterand.
The 2013 SL63 HAS A MCT GEARBOX wich is NOT a double clutch transmission like Porsche PDK, BMW DKG, Audi S-Tronic and many more.
IT'S AN UNIQUE KIND OF TRANSMISSION.
Basically that's a 7G-Tronic transmission where the traditional Torque converter has been replaced by a wet startup clutch.
Do not confuse it with the SLS amg transmission wich is a real Double clutch trans.
"The use of the exact terms is the most beautiful poetry"
Late French president François Mitterand.
Last edited by DCMETRO22Z; 05-05-2013 at 01:53 PM.
05-06-2013, 08:09 AM
#6
MBWorld Fanatic!
Thread Starter
Sorry guys your wrong, it has a torque converter, and described in the
brochure as Auto.
As I said, they have done some work on it, and it's better than the old auto.
Actually it need not be 7 speed, if you put it in manual it stays in 5th most of the time up to about 70, it wont change to 6 or 7 until your going over 70ish.
My previous 63 did not do that, maybe 7th not available at 60, but I think
it was geared for 19 inch wheels with 30 profile. My new 63 has 20inch rears
still with 30 profile tyres so it must be geared up as the normal wheels are 19
with 30 profile tyres.
brochure as Auto.
As I said, they have done some work on it, and it's better than the old auto.
Actually it need not be 7 speed, if you put it in manual it stays in 5th most of the time up to about 70, it wont change to 6 or 7 until your going over 70ish.
My previous 63 did not do that, maybe 7th not available at 60, but I think
it was geared for 19 inch wheels with 30 profile. My new 63 has 20inch rears
still with 30 profile tyres so it must be geared up as the normal wheels are 19
with 30 profile tyres.
05-06-2013, 08:50 AM
#7
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'22 Alpina B7,'21 G63 Renntech obviously (wife), Wrangler(kids)
Sorry guys your wrong, it has a torque converter, and described in the
brochure as Auto.
As I said, they have done some work on it, and it's better than the old auto.
Actually it need not be 7 speed, if you put it in manual it stays in 5th most of the time up to about 70, it wont change to 6 or 7 until your going over 70ish.
My previous 63 did not do that, maybe 7th not available at 60, but I think
it was geared for 19 inch wheels with 30 profile. My new 63 has 20inch rears
still with 30 profile tyres so it must be geared up as the normal wheels are 19
with 30 profile tyres.
brochure as Auto.
As I said, they have done some work on it, and it's better than the old auto.
Actually it need not be 7 speed, if you put it in manual it stays in 5th most of the time up to about 70, it wont change to 6 or 7 until your going over 70ish.
My previous 63 did not do that, maybe 7th not available at 60, but I think
it was geared for 19 inch wheels with 30 profile. My new 63 has 20inch rears
still with 30 profile tyres so it must be geared up as the normal wheels are 19
with 30 profile tyres.
A quote from MB press release at the 2013 SL premiere:
" Mercedes' AMG Speedshift, a seven-speed automatic transmission that uses a wet clutch pack in place of a traditional torque converter and sports four shift modes."
NO TORQUE CONVERTER IN SL63!
Now read it 100 times so it will finally get through to you.....
Btw,the same tranny is in 2011(and newer) S63 and 2012 CLS63/E63
Last edited by absent; 05-06-2013 at 08:52 AM.
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05-06-2013, 09:17 AM
#8
Super Member
Sorry guys your wrong, it has a torque converter, and described in the
brochure as Auto.
As I said, they have done some work on it, and it's better than the old auto.
Actually it need not be 7 speed, if you put it in manual it stays in 5th most of the time up to about 70, it wont change to 6 or 7 until your going over 70ish.
My previous 63 did not do that, maybe 7th not available at 60, but I think
it was geared for 19 inch wheels with 30 profile. My new 63 has 20inch rears
still with 30 profile tyres so it must be geared up as the normal wheels are 19
with 30 profile tyres.
brochure as Auto.
As I said, they have done some work on it, and it's better than the old auto.
Actually it need not be 7 speed, if you put it in manual it stays in 5th most of the time up to about 70, it wont change to 6 or 7 until your going over 70ish.
My previous 63 did not do that, maybe 7th not available at 60, but I think
it was geared for 19 inch wheels with 30 profile. My new 63 has 20inch rears
still with 30 profile tyres so it must be geared up as the normal wheels are 19
with 30 profile tyres.
08-20-2013, 10:40 AM
#10
MBWorld Fanatic!
Thread Starter
Thank you ! I was starting to Think I were mad.
The 2013 SL63 HAS A MCT GEARBOX wich is NOT a double clutch transmission like Porsche PDK, BMW DKG, Audi S-Tronic and many more.
IT'S AN UNIQUE KIND OF TRANSMISSION.
Basically that's a 7G-Tronic transmission where the traditional Torque converter has been replaced by a wet startup clutch.
Do not confuse it with the SLS amg transmission wich is a real Double clutch trans.
"The use of the exact terms is the most beautiful poetry"
Late French president François Mitterand.
The 2013 SL63 HAS A MCT GEARBOX wich is NOT a double clutch transmission like Porsche PDK, BMW DKG, Audi S-Tronic and many more.
IT'S AN UNIQUE KIND OF TRANSMISSION.
Basically that's a 7G-Tronic transmission where the traditional Torque converter has been replaced by a wet startup clutch.
Do not confuse it with the SLS amg transmission wich is a real Double clutch trans.
"The use of the exact terms is the most beautiful poetry"
Late French president François Mitterand.
Then you say the SLS has a double clutch which is different.
Can you explain, I am interested.
