Results 1 to 40 of 53

Thread: NEW EVOLUTION X MR!!!

Threaded View

  1. #17
    www.jasontbarker.com speedminded's Avatar
    Join Date
    Nov 2003
    Posts
    22,589
    Rep Power
    54

    Default

    Quote Originally Posted by tdurr
    its got 2 clutches that are electronically controlled... it's supposed to be "both" but i just say its auto cuz of the no foot clutch
    T-durr
    Quote Originally Posted by TonyRSX
    not really understanding the transmission...so basically its an automatic but then u can put it into manual mode like a tiptronic transmission? if thats the case...boring...
    Quote Originally Posted by sabastian458
    it is a automated manual transmission. It is very impressive as a transmission. The X's are made in manuals, they are called GSR's where as this is a MR. The car is a few hundred pounds heavier, but with the yaw, acd, traction control and the intellegant shifting of the transmission make the car much faster
    Quote Originally Posted by chinitoxamor
    everything was sex until the i saw auto
    If you don't know transmissions or how they work then I'm gonna lose you here, essentially it's the same as VW/Audi DSG which is a twin disc version of their SMT which is identical to BMW's SMG/SMG II and Ferrari's F1. They are automated manual transmissions.

    I can't say for sure on VW's SMT but I know for a fact that BMW's SMG/SMG II and Ferrari's F1 it's the exact same transmission as their manual, the only difference is the clutch slave cylinder is replaced by a computer controlled [electro] hydraulic actuators (plus the shift linkage is automated too). Instead of pushing a pedal to force the fluid to disengage the clutch then releasing the clutch pedal to engage the clutch the computer does it faster than a human ever could...

    BMW SMG II (M3 E46) - 80 ms
    Ferrari F1 (Maserati 4200GT) - 80 ms
    Ferrari F1 (360 F1) - 150 ms
    Ferrari F1 (Enzo) - 150 ms
    Ferrari F1 (575M) - 220 ms
    BMW SMG (M3 E36) - 220 ms
    Aston Martin Vanquish - 250 ms

    The twin disc transmission like the EVO's SST (Getrag), VW's DSG (BorgWarner), BMW's DCT (Getrag), the Nissan GT-R's transmission (Getrag), etc. are supposedly as fast as 8ms between gears....or 10 times faster than BMW's SMG II. Basically it's two transmissions combined into one compact unit, one clutch is for 1st, 3rd, and 5th and the second clutch is for 2nd, 4th, and 6th...

    When you are in first gear the "2nd transmission" is in 2nd, then it seamlessly switches "transmissions" and when you're in 2nd the 1st shaft is in 3rd waiting for you to shift again. When you're in 3rd gear the 2nd shaft has 4th gear waiting, etc...but what if you don't upshift? Maybe you need to quickly downshift instead? The computer senses from the RPM's what gear will be next and prepares for it on the other shaft. Technical yes. Faster than a standard transmission, yes. More reliable and less moving parts than a regular automatic, yes.

    With a standard transmission, as well as the original automated manuals like SMG or F1, as you're shifting gears 100% of the power to the wheels is lost: 100% power to 0% power back to 100% power. The new twin clutch transmissions however have virtually 100% of the power going to the wheels at 100% of the time. You can't get a faster or smoother shift than that in a performance car.

    Do I like it? Eh, I like the connection of driver, car, and road...nothing calms me more than running through the H pattern in car or sequential shifter on a bike. However, smoothness and quickness is what wins races. This is the direction cars are going and one day we'll have race car drivers that have never operated a clutch with their foot. They'll be wondering what that 3rd pedal is for, lol.
    Last edited by speedminded; 07-31-2008 at 07:37 AM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
About us
ImportAtlanta is a community of gearheads and car enthusiasts. It does not matter what kind of car or bike you drive, IA is an open community for any gearhead. Whether you're looking for advice on a performance build or posting your wheels for sale, you're welcome here!
Announcement
Welcome back to ImportAtlanta. We are currently undergoing many changes, so please report any issues you encounter with the site using the 'Contact Us' button below. Thank you!