JeT

I was at a light today next to a Honda Prelude. He was revving it a bit so I thought I would oblige him. I didn't really think I had a chance against the lastest model prelude so I thought I would just stuff around and use the tiptronic...now, I've only played with it a couple of times...but on this particular time I reckon I hit the gears right on queue and before I knew it I was more than a nose in front...In all honesty though I reckon he must have been a **** driver!!

Anyway, this got me wondering weather an auto using its triptronic can gain that extra half second the manny has on the 0-100K/hr (0-60mph). Technically I can't see any reason why it couldn't unless the ratios are different.

young

do aussies "reckon"?

so, you're saying that there may be a shiftronic shifting pattern that is optimal for 0-100kmph? i thought that you go to 1, and just step on it, it'll shift at 6k rpm, and that's it.

Lynn

Every test of a Mercedes that I have read says that they got the best times by letting the transmission do the shifting.

bajaiman

Was the Prelude Vti-R??, based on magazine stats the Prelude should be faster compared to C200K, unless the Prelude's driver screwed up at the start.

Until what speed did you stop racing?...did you get to the front of him when you decided enough is enough???.

I think the C200K auto would do mid 9 seconds 0-100, the tiptronic won't make a difference coz if you leave it in "D", the auto tranny should upshift when it hits the redline. Be careful when you manually use the tiptronic coz if you leave it other than "D" then it won't upshift unless you tap the gear level to the right as I have over revved my car a couple of times cos I was late in changing the gears.

If you have Kleemann pulley, you'll shave 1 second off you 0-100 time tho

young

the c200k is different? the c230k automatically upshifts when it hits redline when in manual-like mode.

JeT

Thought I'd just introduce a little crocadile hunter lingo into the forum!!

I don't know about an optimal shifting pattern...using the tiptronic does avoid that split second lag the auto trannies have when you floor it. Quite possibly the result would have been the same using straight auto against that **** prelude driver!

bajaiman

We do uses "reckon" quite a lot down here

Can C230 coupe gear upshift by itself eventho you leave the gear other than "D"????... I thought only C32 can do that.
It didn't upshift by itself in my C200K but when I tried it in C32 it upshift all the time at redline no matter if you start in "D" or "1"

bajaiman

Yep...my C200K over revved by as much as 500rpms ... maybe its just my car...
JeT...wanna give it a try since your car uses the same engine like mine?

Matt230K

Are you joking? Even the C230K won't get to 100 in the 1/4 mile and that takes 14.5-16 seconds depending on setup.

JeT

Yeah it was a Vti-R which kind of supports my argument he was a **** driver! We stopped upto about 110 coz there was traffic ahead...mid range acceleration is not bad on the C200K. It suprisingly held its own but give it a few more seconds an he would have pulled away. No matter how **** you are, once you get going its just a matter of putting the foot to the floor...Baj, your car and pulley would have kicked him me thinks!

bajaiman

LOL .... oh...I forgot to tell you guys that we aussies use km/h not mile/h .... so in your part of the world then it would be 0-62mile/hour ... i hope that makes everything clear

young

https://mbworld.org/forums/showthrea...&threadid=2009

WARNING: E55's do not upshift automatically.

ah, crikey! i forgot about the crocodile hunter

Matt230K

Sorry, didn't even think about that. That does make a difference.

hobie

US spec tranny is idiot proof. I wish I could hold it for a few extra revs, now and then. I often tip into 2nd or 3rd to anticipate exiting a curve. I let the tranny shift up. Does Aussie spec cupholder take oil cans?

JeT

I got to admit, I do like the shifting on the auto tranny...pretty much makes the tiptronic redundant.

Baj, I'll give the redline a whirl next time I'm on an appropriate road.

I could make this race a war victory tale...but just wouldn't seem right!! The Vti-r specs tell the true story!

bajaiman

I never had a chance to race somebody at the lights coz I think people won't be bothered racing a slow C class sedan, maybe could be different with the coupe
I'll get my chance but hopefully after the unichip/chiptorque and intercooler me thinks ... not for another at least 4-6 months

JeT

LOL! We don't have that fancy upper cupholder thingymejig! I don't even know why I bought the car in the first place...what was I thinking?!!

bajaiman

Oil cans??...you mean coke cans??... there a place just behind the gear selector where you have to slide it open. I think I can call this cup holder...nothing fancy but at least it shaped like a cupholder and thats where i put my cans ... not sure about oil cans tho...

JeT

Baj, do you know the specs of the prelude model just prior to the current shape (can't remember the year)? These models are always up for a little drag..I must have "beat me" stamped to my forehead or something!

bajaiman

Prelude's previous model?? .. hehehehe that was my previous car before I got my C200K. I used to have 1994 Prelude Vti-R, pretty quick car, don't think C200K have a chance if the Prelude's driver has a good launch at the start, mind you the 94-97 Prelude Vti-R comes with manual only so theres some good chances that the driver will screw up the launch .

Anyway the stats for that Prelude Vti-R is 142kw (7000 rpms) with 210Nm torque. Based on magazine stats they can do 8 seconds 0-100 and 15.5 for 1/4 mile time.

JeT

Looks like we should leave the prelude challenges to our C230K brothers!!

SoCal240/6

No, it won't make up the time. The reason an automatic is slower than a manual is largely because the automatic has a torque converter. The torque converter is what saps power to the wheels - as much as 10%. With a manual, there is a direct mechanical connection between the crankshaft and the tires. With an automatic, this connection is interrupted by the gooey, fluid filled torque converter (which is why the automatic is often referred to as a "slushbox").

The "triptronic" is mechanically just a regular, torque converter automatic transmission with a gimmicky way of causing it to shift gears. Almost all automatics are programmed to give maximium acceleration if you leave it in "Drive" and floor it. Whether it shifts when the computer tells it to shift, or when you press the button, makes no difference, performance wise, because mechanically its doing the exact same thing.

SilverStarC230

i hear you use good day alot too!! or thats what i say on crocodile dundee a long time ago.

lars

Isn't there an electrohydraulically shifted manual option (like F1) for Europe? It sounts interesting and should shift faster but reviewers seem not to like it.

vadim

Yeah, they acquired that habit from the Brits