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Primotenente Primotenente is offline

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  1. Primotenente
    05-09-2014 01:00 AM - permalink
    Primotenente
    Hello

    Exactly. Side to side is another thing and done by electronics. Xmode and breake vectoring are about side to side. This is what subiesailor fails to understand and why he is wrong.

    1.
    Yes, in theory they can vary torque more, and make it a front wheel drive but what would be the advantage of having a fwd or "almost fwd vehicle"? So it is only a disadvantage, especially as the clutch is always slipping and sending power to the rear.

    2.
    The differential does not work as an LSD - the MPT works as "LSD" - the differential only works as differential and balances torque. Point is a differential is made for this, a clutch not.

    The point is that a differential is much smoother and faster and therefore the better solution. Whith a slight rear wheel bias you have better handling. VTD feels more like rwd, the other like fwd with endless understeering.

    Go to youtube, enter "quattro snow", whatch those viedeos and you will see what I am talking about.
  2. pcray1231
    05-08-2014 06:07 PM - permalink
    pcray1231
    Hey man, too bad they closed that thread. Teach me something. Per my understanding, the thing that distinguishes VTD from "Active AWD" is the planetary center diff. Thus we are only talking about front/rear power distribution, and left/right is an independent conversation.

    BOTH use an electronically controlled MPT clutch. VTD adds a planetary gear differential. So, what does that planetary center diff do? My understanding:

    1. Bias the torque to the rear.
    2. Act as a center LSD. Front/rear remains controllable with MPT clutch but can't step too far out.

    That said, if the MPT clutch is truly fully controllable, capable of handling real loads and react very quickly, then even without that planetary diff:

    - Subaru can set the bias pretty much wherever it wants.
    - The LSD would almost never engage, and when it does, it'd be in situations where you might rather it not.

    I realize the "if's" are big ifs. But we're talking theoretically here. What am I missing?

  About Me

  • About Primotenente
    Location
    Europe
    Your Car
    Outback 3.0 AT MY05 (VTD/VDC/LSD)

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  • Last Activity: Today 05:44 PM
  • Join Date: 12-29-2007
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  Quotes

09-02-2015
02:12 AM - Primotenente quoted ctsurv553 in post Loved my Subaru- Until Subaru confirmed my CVT is junk
(...) None of the automatic tr...
08-21-2015
04:08 AM - Primotenente quoted creavation in post No center Diff for outback 3.6R w/CVT
(...) Subaru Active AWD system ...
03:47 AM - Primotenente quoted pcray1231 in post No center Diff for outback 3.6R w/CVT
Fair enough. Mechanically, th...
03:29 AM - Primotenente quoted subiesailor in post No center Diff for outback 3.6R w/CVT
Keep in mind Bias doesn't mean a...
03:23 AM - Primotenente quoted pcray1231 in post No center Diff for outback 3.6R w/CVT
(...) Functionally it's not at...
08-20-2015
05:47 PM - Primotenente quoted pcray1231 in post No center Diff for outback 3.6R w/CVT
(...)1. Your VTD was also ele...
05:38 PM - subiesailor quoted Primotenente in post No center Diff for outback 3.6R w/CVT
Not really. Quite a few: BMW x...
05:36 PM - Primotenente quoted subiesailor in post No center Diff for outback 3.6R w/CVT
(...) The old Land Rovers had yo...
05:32 PM - subiesailor quoted Primotenente in post No center Diff for outback 3.6R w/CVT
- In VTD there are neither none o...
05:28 PM - Primotenente quoted subiesailor in post No center Diff for outback 3.6R w/CVT
(...) There isn't a single AWD s...
05:23 PM - Primotenente quoted pcray1231 in post No center Diff for outback 3.6R w/CVT
(...) old 3.6r with 5AT - term...
07-25-2015
02:19 PM - Primotenente quoted jon_slider in post Max allowable Tire tread depth difference
(...) IF you had 2 tires with 2...
01:50 PM - jon_slider quoted Primotenente in post Max allowable Tire tread depth difference
With an 150 hp n/a gasoline engin...
01:41 PM - Primotenente quoted jon_slider in post Max allowable Tire tread depth difference
thanks for helping me learn to ...
12:39 PM - Primotenente quoted jon_slider in post Max allowable Tire tread depth difference
(...) and a 4MT changes from 90...
11:35 AM - jon_slider quoted Primotenente in post Max allowable Tire tread depth difference
All numbers are static and change...
08:27 AM - Primotenente quoted jon_slider in post Max allowable Tire tread depth difference
If a MT varies from 90 front to...
06:06 AM - Primotenente quoted jon_slider in post Max allowable Tire tread depth difference
(....) If I understand correctl...
07-07-2015
07:10 AM - Primotenente quoted ben550 in post Toyota 4Runner to Subaru Outback?
(...) What are your thought...
06-19-2015
04:36 PM - subiesailor quoted Primotenente in post Ever consider a BMW Sports Wagon?
Modern BMW have better quality th...

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