Hello Works,

I saw on your site you now have the Motec ACD Controller for sale. Can someone share some real-world experience with this unit - how it works and how the different settings affect the car's handling?

From your site it looks like you can adjust from 100% open to 100% locked - is that correct??

Attached is a picture of my car, this year's Showcase Mitsubishi autocross car.

EVOlutionary

 

I 2 would like to know..

 

This better not turn into a yes but we will only sell it if we install it threads.

 

Found this:

http://www.aviorace.it/kit/Mitsubish...Controller.pdf

More info on how it works.

Waiting for Works' input.

EVOlutionary

 

Answer is on the way. I still need to pick some brains. Wish I was a little more savvy in this department, but I'm not, so have patience.

Thanks

-Bill@WORKS

 

Ok,
There is still a more in depth answer coming, as we will be doing some extensive testing on a staff car in a couple of weeks, but I've been doing some reading and....
Yes, you can adjust from 100% open (like a standard open diff) to 100% locked (like a fully locked diff). If you think of the EVO's layout as a front diff, ceter diff, and rear diff, it will help you visualize how this can affect the cars handling. Power travels through the center differential first before reaching either front or rear differentials. In theory it is 50/50 front to rear split (although our testing has shown a slight bias toward the front diff).

So with the center diff set at 100% open power is going to want travel to the path of least resistance (ie the wheels that will spin the easiest). So if the front wheels are on ice and the rears are on tarmac and the center diff is open, power will lean toward the front wheels on the slicker surface. With the center diff fully locked, the power will go to the front and rear wheels equally (again in theory). When the car is turning, opening up the center diff will allow the front and rear wheels to turn at different speeds more easily making the car turn in with more ease. Locking the center diff will cause the car to push a bit as both front and rear wheels need to turn at the same speed.

Hope this helps a bit and again after we test it out a bit there will be more info coming in.

-Bill@WORKS

 

anything new?

 

erm, +1?

 

We did a little preliminary testing and had some good results. With the factory ACD, when the vehicle enters a turn the ACD is coupled (driving front and rear wheels) during braking, then once the car is actually in the turn it opens up the coupling (driving just the front wheels), and as the car begins to pull out of the turn it again couples. This is done by using maps based on accelerometers and sensors on the steering. With the MOTEC unit we were able to run it through some corners both fully coupled and fully open the entire time. With the MOTEC in the open position the car had noticeable understeer. With the MOTEC locked the car was more planted and balanced through the corner. It should be noted that on factory ACD full lock is really around 61% lock, so we used that same percentage with the MOTEC, although in theory it can be cranked up to a true 100% lock.

-Bill@WORKS