See what I wrote below...
I see. Hm, somehow I thought I did mentioned that I have been racing for several years and all of that experience is coming from racing an AWD cars. Plus, I do all of the work on my car and few others. I also have an engineering background, and some knowledge in the control systems, which gives me a base for my writing.

So, if this is now good enough for you, does it mean that I can write some garbage and you will now accept it as good stuff because of my background?

The thing is that in physics and mechanics and computer science, things are always (well mostly always) exact and there is no debates about that. If something works certain way, it doesn't really matter who is the one to say otherwise. It will not be true!

Originally, I was just saying how the ACD works internally and what is going on inside there. Again, if you think that some of the things that I said where not correct, please tell us about it. But, don't pull this stuff about where I am getting the stuff from and how many years of experience is behind that any more, because it is just lame.

Later and don't forget that


Fedja

 

Mr AWD I think (to summerize a little) what Claudius is trying to say is that what you are saying is THEORETICALLY CORRECT but in actuall fact the electronics are not as fast as you think. The diffs the WRC guys use ARE fast enough to be better than a mechanical unit. I can totally relate to this with my experience with a lot of stability control systems avaliable. On paper they seem brilliant yet in actual use they are almost always a step behind the car and therefore destracting you. This is only true with drivers with experience driving at the limit. If you have experience (and I know you do) you can and will anticipate almost everything your car will do at the limit. What can electronics do in the same situation? answer: react, so unless they are really really quick (read very expensive) the experienced driver will find them an annoyance.

We have talked about this before (and you agreed) what we want is a well balanced predictable car, end of story. If you have that you will be fast.

What Claudius is saying is that AYC AND ACD does not work as well or as quick as claimed. Therefore bottom line, the more experienced and faster you are the LESS you will like these systems

 

I'm still a little confussed. Is the ACD better then the Diff's we have now....or only in snow and gravel. Also with the Diff's we get will the tourque to the rear wheels still be as much as the ACD's naturally when used on regular roads, or tracks?

 

sounds good to me.......especially about the evo were getting going to be better then the other ones, from a performance stand point

 

Wow, to think that this issue is still alive!

Anyway, I'd havta agree with the general consensus, which would be less electronics = less to worry about = less to pay for when stuff breaks. Not to mention, if it is as unpredictable as people say it to be, it probably wouldn't be the best thing to have for somebody just learning to handle their car on the track!

Speaking of electronic differentials though.. I'm curious about a couple things. I don't know how many of you checked out that STi 8 video that was posted up here a couple weeks ago, but did you guys see the part where the new STi was clearly understeering less (or rather, more neutrally) than the old one? I assume that's due to the new DCCD system, but how exactly does that system work?? Or for that matter, how is the new "Super AYC" different/better than the current AYC on the Evo7?

 

Whoops, just noticed the last post before mine was dated February.

 

Is does make it understeer less but the good news is that even with the system it still has more understeer and is less sharp than an EVO (accorcing to the U.K. magazines) It works in a similar (but not identical) way to the ACD system on the non U.S. EVO's. The driver can vary the amount of locking in the center diff. with a dial, open for less understeer on tarmac more locking for less grippy surfaces.


The Super AYC now uses planetary gears that allow for twice the torque difference to be sent side to side than the "old" AYC system

The magazines that have tested the new system marvel at the cars grip but add that it feels very artifical, they think the U.S. version with none of the electronics is a more pure, more fun car to drive though maybe not as quick with the "average" driver at thae controls. Generally speaking the better you are as a driver the more these electronics (in there current form) will annoy you and slow you down. The U.S. EVO will be a pure drivers car

We shall see soon enough!

 

there is a very old principal that people have forgotten

K.I.S.S.=Keep It Simple Stupid

i think the new Evo is an example of that...let the rest of the world worry about the gizmos and give me a drivers car

 

My god, I hope you're right make sense though doesn't it? it's so easy to get caught up in all the gizmo's untill you realize they detract from the driving experience.

 

That didn't take long did it