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davE46
06-21-2002, 10:36 PM
How is the Audi multitronic transmission different than BMW SMG II. Any opinions?

zamini
06-21-2002, 10:51 PM
We're talking apples and oranges here, Audi multitronic is a chain that acts like an Auto, but SMGII is a Clutchless Manual that has the option of changing gears for you automatically. You could compare the audi multitronic with Honda's CVT, that there is a fair match, SMG compares with Ferarri 355 and 360 F1.

jsirota
06-21-2002, 10:54 PM
The Multitronic is a CVT (Continuously Variable Transmission). The CVT is just an automatic transmission with an infinite number of gears (as opposed to 4 or 5). For you geeks, like me, thing of it as an analog transmission, as opposed to a digital one.

It's actually very very cool as far as automatics go. Revs stay at the torque peak all the time when accelerating, and you never lose turbo boost (we have the 1.8T). It uses a wet clutch for idling rather than a torque converter, so there is no driveline loss when moving.

There's no doubt in my mind that this is the future of automatic transmissions. All of the convenience of a conventional automatic, but with the performance and gas mileage of a manual.

It does offer a tiptronic mode. The way that works is that Audi just picked 6 fix ratios and you can shift between them with the steering wheel buttons or the shift lever, just as with every other tiptronic (or BMW's steptronic). We never ever use this unless you want to arbitrarily keep the revs high, like if trying to crawl down a steep hill.

The SMG is a clutchless manual, basically. The automatic mode of the SMG is nowhere near as good as a conventional automatic, never mind a CVT like Audi's.

shwest
06-21-2002, 11:01 PM
...and the strongpoint of the SMG is certainly not the auto modes!
99% of the SMG buyers buy it for the MANUAL modes...the auto modes are just an extra feature, which some will rarely use...

Scott W
waiting for my Wk 24 (still status 193)

jsirota
06-21-2002, 11:03 PM
Also waiting for my W24 (non-SMG)

lexx
06-21-2002, 11:05 PM
<br>
<IMG SRC="http://members.roadfly.com/lexx/lexx.jpg">
Lexx, <A HREF="mailto:lexx@roadfly.com">lexx@roadfly.com</A>, E46M3 02/2002 TiSi/Blk/6sp

shahin
06-21-2002, 11:06 PM

jsirota
06-21-2002, 11:07 PM
Yeah. So when I said it's a clutchless manual, I meant that the driver doesn't have to operate the clutch.

ZAZA
06-21-2002, 11:16 PM
Just no Pedal, even alot of magazines use that term which is vage, but really the case, after all even a Automatic has tiny Clutches.

e36avus
06-21-2002, 11:19 PM
CVT is the same philosophy behind what has been making powerboat engines run for years. No gears to shift and there is always power......I am certainly not very mecanically inclined but I have been thinking about what they cant apply marine engine technology to the roads for some time now.....Maybe now they have

Mr. Grinch
06-21-2002, 11:33 PM
ones without lockup often will not have any clutch.

shwest
06-22-2002, 03:00 AM


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