post results and you can thank me on the gravel theory later

 

will do...if i can break 11's in "gravel" but not "tarmac" then i will thank the hell out of you

 

bump for results from you track day?

 

thats quite interesting. Can you explain to me, why the Gravel makes the car faster in drag racing. I know i find it more efficient in wet road or mix surface.
So i find myself run gravel most of the time. Simply reason is the car just seems more nimble to me.

ps. off course the S-AWC is off completely.

 

I'm going this wednesday if the weather is good. I'll post in here my results.

 

Gravel=Open Diffs=Less drag on drivetrain=more effecient way to put power down on an AWD car

Tarmac=Locked Diffs=More drag on drivetrain=less effecient way to put power down on an AWD car

Short and sweet enough?

 

is there any reason to drive in tarmac ever? any advantages ever?

 

+1

 

how does the car feel on the street?
i think im going to the lot next weekend possibly, would i ever be able to see the car?

 

would you explain to me more? I still dont get it.
My logic would say Gravel is a locked diff since its slippery and the tarmac is not, since its sticky in theory.
Also I never knew the Evo can unlock the diff's. How? As far as i know all diff's on the Evo's /exept the 03 front in US or some very early model/ are limited slip, either electronically or mechanically. Depends on the Year and model.

Only diff i know can be unlocked is a ACD.
http://mmna.wieck.com/forms/mmna/fil...E04_ACD_A3.pdf

the front diff is a helical one so i dont know how we can unlock it.
the rear is an AYC wich is basically a smart LSD. So i dont know how we can unlock that one either.
http://mmna.wieck.com/forms/mmna/fil...E03_AYC_A3.pdf

As far as i know the ACD is selectable how will lock or partially realease to an open stage, but basically we can't shut it off completely to the never lock stage.
And basically the off position is for the turns when makes the car more rear or front wheel drive deppends on the car attitude. In straight line acceleration the ACD is always lock or partially lock position. Depends on the surface. And the mode you are choosen.
Here is one explanation:
" During acceleration or deceleration, ride stability increases as one approaches the direct drive 4WD state. Improved cornering performance is the result as the power to the limited slip-differential approaches the non-drive state.
Three optimal modes can also be selected to match road surface conditions."
http://www.mitsubishi-motors.com/cor...nce/e/awc.html

SO out of three Diff's i don really understand, how we turn those off.
Thanks for the input I try to explain my understanding , so you can correct me on it.
Rob

 

I'll try to make it as simple as possible.

The Active Center Differential ( ACD) incorporates an electronically-controlled hydraulic multi-plate clutch. The system optimizes clutch cover clamp load for different driving conditions, regulating the differential limiting action between free and locked states to optimize front/rear wheel torque split and thereby producing the best balance between traction and steering response.

 

from your 60' times; would launching in tarmac and switching to gravel yield even better times? locked diff for your launch and unlocked diff for less power loss?

 

i'm not skilled enough to execute such shenanigans

 

In theory, that seems to be the optimal way, but I don't think we have any real world testing just yet.


Here is my take....
I still do not believe gravel is best for launching, however, with the limited mods it may prove to be better since there is no wheel spin. IF, you get to a power level where wheel spin might occur off the line, then I feel tarmac will provide better 60' results.

With that said, it does seem gravel mode puts less resistance on the drivetrain to get down the track slightly faster. As long as you don't spin this seems to be the best way. Once wheel spin occurs I think the results might be slightly dfferent.

I wanted to attempt this theory last Friday, but the track event got rained out.

 

Any answer to this?