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TC-SST Sport vs. Normal Mode

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Old Jan 7, 2011 | 11:57 AM
  #31  
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bov flange

I wonder whos right lol.
Old Jan 7, 2011 | 12:39 PM
  #32  
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As much as it pains me to say this, I stand corrected. After doing research I confirmed that sport and ss mode are going to put more stress on the clutch packs. I do apologize for my ignorance and assumptions.

I still say that the sport mode has very little to do with the fuel economy. Yes it does hold gears longer and doesn't shift into the next higher gear for fuel saving. This makes very little difference in your fuel economy. Certainly not enough for you to notice a difference. (unless you are on long trips with all highway use) The lead foot equals poor fuel economy not the transmission modes.
Old Jan 7, 2011 | 03:26 PM
  #33  
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Good info.

But yeah, I was only stating what I heard from the dealership owner at Don Herring Mitsubishi in Irving, TX. When I got my RA10 I got the Cobb AP and that was what he told me while in Sport Mode and you're "having fun" in it.
Old Jan 7, 2011 | 06:33 PM
  #34  
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I'm still not convinced one way or another as to whether driving in Sport or Normal mode is better for the tranny. I'd like to hear some more compelling evidence to support the claims....
Old Jan 8, 2011 | 09:25 AM
  #35  
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I read this as the more aggressive the mode the more wear on the clutch packs. Unless they only mean when launching in SS mode. This was all I could find about wear in different modes.

"The three modes of Normal, Sport and S-Sport are selected by a small rocker switch near the gear selector. However, S-Sport can be selected only when the car is stationary, as Mitsubishi wants to limit the excess wear that can be created by using this mode. When in S-Sport, launch mode can be used. Stability control must be disabled, the brake depressed and 5200 rpm selected with the throttle. We think Sport mode is plenty for aggressive driving, but if you want that extra bit of performance, the Evo gives it to you. If only all automatics were this good!" Road & Track quote
Old Jan 8, 2011 | 09:41 AM
  #36  
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Originally Posted by EvoOtto
As much as it pains me to say this, I stand corrected. After doing research I confirmed that sport and ss mode are going to put more stress on the clutch packs. I do apologize for my ignorance and assumptions.

I still say that the sport mode has very little to do with the fuel economy. Yes it does hold gears longer and doesn't shift into the next higher gear for fuel saving. This makes very little difference in your fuel economy. Certainly not enough for you to notice a difference. (unless you are on long trips with all highway use) The lead foot equals poor fuel economy not the transmission modes.
This I agree with especially if we're talking about sport manual and normal manual modes. Sport auto vs normal auto will have lower fuel economy because sport auto keeps the RPMs much higher for shifts.
Old Jan 8, 2011 | 09:45 AM
  #37  
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Originally Posted by EvoOtto
I read this as the more aggressive the mode the more wear on the clutch packs. Unless they only mean when launching in SS mode. This was all I could find about wear in different modes.

"The three modes of Normal, Sport and S-Sport are selected by a small rocker switch near the gear selector. However, S-Sport can be selected only when the car is stationary, as Mitsubishi wants to limit the excess wear that can be created by using this mode. When in S-Sport, launch mode can be used. Stability control must be disabled, the brake depressed and 5200 rpm selected with the throttle. We think Sport mode is plenty for aggressive driving, but if you want that extra bit of performance, the Evo gives it to you. If only all automatics were this good!" Road & Track quote
there will be higher clutch wear in Sport Mode, "excessive" clutch wear in S-Sport mode is mainly from using launch control...
Old Jan 9, 2011 | 09:54 AM
  #38  
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Originally Posted by Slee256
Can anyone confirm whether this is true or not? This is the first time I've heard somebody make a claim like this....
Dude is common sense.

You dont need a special degree to have that conclusion.

Only time will tell who have the reason.
Old Jan 9, 2011 | 11:29 AM
  #39  
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Physics 1, Slee256 0
Old Jan 9, 2011 | 12:40 PM
  #40  
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You can tell a big difference in normal manual mode and sport manual mode at the quickness of the shifts.

Does it hurt anything to shift lower around 2-3K RPMS's when in sport manual. It is a noticable difference between the shift time so I can see how it would make the clutches and trans work a little more. Just not sure how much it would effect everything.
Old Jan 9, 2011 | 03:36 PM
  #41  
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Originally Posted by SharkyPR
Dude is common sense.

You dont need a special degree to have that conclusion.

Only time will tell who have the reason.
Originally Posted by stfuad
Physics 1, Slee256 0
Sorry, I didn't know we had all these "Einsteins" on this forum....
Old Jan 9, 2011 | 05:41 PM
  #42  
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if you are out to have fun, driving in sport mode is optimal. Normal mode has some torque restrictions built in that limit the performance slightly.

My car is always in sport manual unless its winter and nasty out, which is a nice time to have some of the torque limited.
Old Jan 10, 2011 | 10:24 AM
  #43  
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Originally Posted by nunyas
Unfortunately, the laws of physics state the opposite of your claim. Application of maximum clamping force on a moving object over a shorter period of time results in greater wear, and higher heat generation.

By your analogy, stopping a moving vehicle by using maximum braking force all the time will result in longer brake pad life, which is not true. Stopping a car as quickly as possible always results in greater wear on the brake pads, which translates to shorter brake pad life.

Like wise, by your analogy, shifting a manual transmission car by dumping the clutch with ever up shift will result in longer clutch life. Again, this is untrue. Dumping the clutch with every shift change always results in increased clutch wear, which of course translates to shorter clutch life.
It is engineering fact that increasing time in the "friction zone" of a transmission equates to increased wear of clutch plates. In simplified english:

The clutch only wears while the clutch disc and the flywheel are spinning at different speeds. When they are locked together, the friction material is held tightly against the flywheel, and they spin in sync. It's only when the clutch disc is slipping against the flywheel that wearing occurs. So, if you are the type of driver who slips the clutch a lot, you'll wear out your clutch a lot faster.
http://auto.howstuffworks.com/clutch.htm


In Geek-Speak:
pg 80: http://www.scribd.com/doc/31787601/A...on-Design-1999

http://contentdm.lib.byu.edu/ETD/image/etd1765.pdf

I'll discuss brakes elsewhere...
Old Jan 10, 2011 | 05:57 PM
  #44  
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Ok guys the wiki/blog engineers said that we can drive our RA like they were stolen and it will last longer than driving them with caution.

Now on, extra stress doesn't affect the RA drivetrain instead it makes it stronger.
Old Jan 11, 2011 | 07:55 AM
  #45  
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Originally Posted by SharkyPR
Ok guys the wiki/blog engineers said that we can drive our RA like they were stolen and it will last longer than driving them with caution.

Now on, extra stress doesn't affect the RA drivetrain instead it makes it stronger.
Did you read these? These aren't Wiki-anything. The Scribd paper is a peer-reviewed article written by some of the designers of the transmission in our car.

http://www.scribd.com/full/31787601?...xdxgvinydwwl6x

NONE of these citations state that hard driving is easier on a transmission. This bears repeating-Nowhere does it state that driving hard is easier on a transmission.

What IS said, is that slippage damages clutch packs. A firm shift, while easier on a transmission, is unpleasant to most drivers and potentially unsafe. Slippage creates a more pleasant driving experience and a more controllable vehicle. This slippage must be designed and accounted for in stress testing.

What you and I state are the same:
If you dump a clutch at 6,000rpm the clutch pack will be exposed to far many more revolutions of slippage, than dumping the clutch at 2,000rpm. Why? because it takes the clutch a longer (rev/time) to match the input rpm. This slippage eats the clutch pack.

Last edited by Alterna; Jan 11, 2011 at 08:27 AM.


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