E60 Discussion Anything and everything to do with the E60 5 Series. All are welcome!

SMG

Old Feb 17, 2009 | 05:37 AM
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this might be a stupid question.....what is SMG for a BMW?
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Old Feb 17, 2009 | 05:41 AM
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sequential manual gearbox.A sequential manual transmission (or sequential manual gearbox) is a type of manual transmission used on motorcycles and high-performance cars or auto racing, where gears are selected in order, and direct access to specific gears is not possible.

With traditional manual transmissions, the driver can move from any gear, to any gear, by moving the shifter to the appropriate position. This type of transmission is often referred to as a H-pattern because of the path that the shift lever takes as it selects the various gears. A clutch must be disengaged before the new gear is selected, to disengage the running engine from the transmission, thus stopping all torque transfer. In auto racing, this process is slow and prone to human error; hence the development of the sequential transmission. A true sequential transmission will very often use dog clutch engagement rather than the more usual syncromesh as fitted to a normal H-pattern road car gearbox. Engagement using dogs only requires a very brief interruption of engine torque to complete a shift into any adjacent gear. This allows shifting between gears without the use of the clutch. The clutch would normally be used only for standing starts.
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Old Feb 17, 2009 | 06:00 AM
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how do I know if my E60 has it?

Originally Posted by Dr Dave' post='794783' date='Feb 17 2009, 09:41 AM
sequential manual gearbox.A sequential manual transmission (or sequential manual gearbox) is a type of manual transmission used on motorcycles and high-performance cars or auto racing, where gears are selected in order, and direct access to specific gears is not possible.

With traditional manual transmissions, the driver can move from any gear, to any gear, by moving the shifter to the appropriate position. This type of transmission is often referred to as a H-pattern because of the path that the shift lever takes as it selects the various gears. A clutch must be disengaged before the new gear is selected, to disengage the running engine from the transmission, thus stopping all torque transfer. In auto racing, this process is slow and prone to human error; hence the development of the sequential transmission. A true sequential transmission will very often use dog clutch engagement rather than the more usual syncromesh as fitted to a normal H-pattern road car gearbox. Engagement using dogs only requires a very brief interruption of engine torque to complete a shift into any adjacent gear. This allows shifting between gears without the use of the clutch. The clutch would normally be used only for standing starts.
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Old Feb 17, 2009 | 07:02 AM
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do you have paddle shift on the steering wheel?
if not then no.
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Old Feb 17, 2009 | 08:53 AM
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Originally Posted by Dr Dave' post='794783' date='Feb 17 2009, 09:41 AM
sequential manual gearbox.A sequential manual transmission (or sequential manual gearbox) is a type of manual transmission used on motorcycles and high-performance cars or auto racing, where gears are selected in order, and direct access to specific gears is not possible.

With traditional manual transmissions, the driver can move from any gear, to any gear, by moving the shifter to the appropriate position. This type of transmission is often referred to as a H-pattern because of the path that the shift lever takes as it selects the various gears. A clutch must be disengaged before the new gear is selected, to disengage the running engine from the transmission, thus stopping all torque transfer. In auto racing, this process is slow and prone to human error; hence the development of the sequential transmission. A true sequential transmission will very often use dog clutch engagement rather than the more usual syncromesh as fitted to a normal H-pattern road car gearbox. Engagement using dogs only requires a very brief interruption of engine torque to complete a shift into any adjacent gear. This allows shifting between gears without the use of the clutch. The clutch would normally be used only for standing starts.
This is sort of correct. The non-M's have a normal six speed transmission with an electro-hydraulic shift mechanism. Its not a true sequential like a motorcycles. Not really sure what the newer 7-speed M's have.
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Old Feb 17, 2009 | 08:55 AM
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Originally Posted by Dr Dave' post='794842' date='Feb 17 2009, 11:02 AM
do you have paddle shift on the steering wheel?
if not then no.
I have paddles on both my 545 SMG and my 535 Sport Auto, the sport auto is an automatic transmission with manual control and faster shift programs.
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Old Feb 17, 2009 | 08:59 AM
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Originally Posted by paws' post='794795' date='Feb 17 2009, 10:00 AM
how do I know if my E60 has it?
It would say SMG on the stick shift knob, it would shift like shit in auto mode. There would be no "park" choice on the stick shift. It would roll back when sitting at a light.
And you would feel very cool driving it I would order it again if it was available on the non-M E60 or F10.
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Old Feb 17, 2009 | 09:04 AM
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i just said paddle shift because if his car does not have them...then its not an SMG (as all E60 SMG's have paddle shift)
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Old Feb 17, 2009 | 09:11 AM
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Originally Posted by Dr Dave' post='794968' date='Feb 17 2009, 01:04 PM
i just said paddle shift because if his car does not have them...then its not an SMG (as all E60 SMG's have paddle shift)
I hope they bring it back
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Old Feb 17, 2009 | 09:14 AM
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why? have they stopped production of them?
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