Discussion in 'Fine Living, Home, Design & Auto' started by Tck13, Apr 26, 2012.
Yeah, except as auto's become more prevalent, they become better designed and tougher.
The days of keeping a car more than 10 years (5 years even!) are setting for a large proportion of the world (having said that, all those cars instantly go into the other part of the world... where these issues become a problem)
oh hai gai
next car, either Audi S6, RS5 or new M5 will have a DCT
kind of rules out the S8 because it comes with a conventional auto
I used to use a slide rule (still do) but it has been replaced by a HP RPN calculator and a personal computer
imo DCT perfect compromise:
overall faster, straight line and road course
can be placed in auto mode
easy on the drivetrain as long as not in super duper sport mode, but even then, no worse than a manual
7 speeds, better ratio/load matching
almost no power interruption, gears pre-selected, just need to swap clutches
electronic control, down shift from 6th to a preselected 3rd before a corner and as speed decreases it drops the gears, and blips the throttle
safer, easier to operate (simpler manual of arms), can keep both hands on the steering wheel, won't allow money shifts
I have 1 mil miles on manuals (e30 M3 160k, e36 M3 170k, e46 M3 150k, 931 80k, 951 50k, 911 90k, 535i 80k, 2002 80k, RS4 60k, a couple of trucks, etc.)
time for a change (no pun intended)
FYI don't just rule out conventional slushboxes because they don't have fancy pre-selection technology etc.
The ones found in current-gen AMG's are ... pretty much as quick as any double-clutch manual gearbox - and in reality, they're far more liveable due to the fact that they kind of don't suck at low speeds that DCT's do.
Sure, if you buy it for 100% fanging around a track, but seriously. Lookin' like an L plater in the carpark. Nah.
I recently picked up a E46 M3 SMG as a commuter car and a HPDE car I wouldn't be too sad if I accidentally wrecked.
I must say the SMG is all kinds of fun. I leave it in its fastest shift mode (S5) and in dry weather at high RPMs it shifts absolutely brutally fast. Upshifts are basically instantaneous clutch dumps. The feeling of banging through the gears at 8000rpm with this transmission is awesome, and triple downshifts (e.g. 6-3 on the highway to pass) are quickly rev-matched and equally spirited.
That said getting back into my E92 M3 6MT has become even more enjoyable. I really love driving manual, even if I am much slower at it than the SMG/DCT.
Someone should develop a true 6MT that could also be operated automatically at the push of a button. Now that would be the perfect transmission. 6MT for weekend driving, automated for track & traffic.
I wish I had your setup, except the opposite: an e46 m3 6-speed and an e92 m3 with dct.
I've driven 5-speed manual transmissions since I was 16, first Toyota and now VW. I don't see a need to change.
I'm curious what actually is the SMG transmission, is it the one that have both automatic and manual at the same time (like steptronic of Audi)? Or something more cool than that???
I drove a 530i before with dual transmission modes (that I can use as either manual or automatic, but I have to fully stop the car every time I wanna switch the mode)
Sequential Manual Gearbox
It's a sequential gearbox, where the car handles the clutch, it also has auto mode, it's closer to Audi DSG.
An SMG is closest to a manual transmission, but where the clutch action is automated. They typically have fully automatic modes, but tend to be extremely lurchy.
A DCT has two separate clutches (the 'DC' in 'DCT' is for 'dual clutch'). That way, the next gear is always engaged before you select it and you can switch without interrupting torque delivery. It is the fastest way to shift gears. In fully automatic mode, DCTs are often indistinguishable from traditional automatic transmissions.
However, there are downsides to DCTs. They are heavier and more complicated than SMGs, take up more space, and cannot handle as much torque from the engine. Some exotics with automated manuals still use an SMG over a DCT for those reasons.
Of the two, I would pick neither. I still prefer the traditional manual stick-shift. Yes, it is slower--but it is also the most fun, and the most engaging. I would happily sacrifice a few tenths of a second for a more connected driving experience.
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