Thursday, June 14, 2007

New post.
Yay!


Those of you expecting me to blog about my birthday, forget about it. I'm not doing it.

All I'll say is that it went exceedingly well and that I got swell presents.

How does it feel to be 22?

fucken old.


Todays post is probably gonna sounds like gibberish to most of you so if you had a heavy day before reading this, i suggest you dont. If you havent had a heavy day before reading this, I suggest you dont as well, this is to ensure that you dont have a bad day thinking of the perfectly good 5 mins you wasted reading this post.


Recently, I've been very obsessed with this video game called Forza Motorsports 2.
Basically, its a racing sim. My obsession is so bad that you can hear my scream "vtec kui liao!" for no aparrant reason.

Now tonight has been a really unsatisfactory night of racing.
My B class subaru WRX STI 04 just refuses to behave itself.
I'm experiencing loads of understeer that I cant correct properly with the throttle.

Give it too little gas, it refuses to turn, give it more gas, it leaves rubber on the floor.
No good, no good.

Tuning didnt really help.
Screwing around with the suspension settings didnt really change much.

The maths involved was just mentally boggling.
an e.g would be something like
weight of car X 0.02 (rebound rating)
weight of car X 0.03 (damper rebound)

with these set of figures, you gonna then adjust the slip differential.
which formula is something like this e.g
weight of car X 423.3 (which is car weights X 0.032)
after which you use the value and multiply by the slip differential percentage.
In the end, I ended with with a differential slip rating of 64% in the front tires and the 44% in the rear tires.

With this settings in place, THEROTICALLY, you will be able to muniplate your AWD train car to the behaviour of a RWD car.
This is all in theory.

When you bring it out to track, you now realise that the rear has too much power for your AWD style of driving.
So you try to adapt.
But in the end, it still doesnt feel right.

Its like, I cant take the cockscrew turn on laguna seca like I usually am able to do so.

going up the hill in 4th gear, you shift down towards 2 taking all due percaution in not burning out your engine and transmission.
Once you hit the downhill potion, you swing the car from left to right and back left again and let the car roll down the hill without depressing the throttle.

NOW, the problem is when you get to the bottom of the hill, you give it maximum gas, hoever because of the slip differential difference between the front and the rear, your tail will start running away from you.
So to rectify that, you counter steer and feather the gas.
This solves the problem. well, sort of solves the problem...

Another e.g will be the 130R on suzuka.
Its called the 130 R because its a left hand corner that you are theoratically able to take at 130miles per hour.
Well, in theory that is.
You enter that corner full of gas flat out and usually you go as fast as you dare with the throttle.
half throttle or full throttle.
usually, people downshift or tap the brakes to gently slow down to the desired speed,

Today the 130R was a mess. Entering the corner, i let of half the gas in order not to let the real end run.
I didnt drop a gear because i didnt want a too sever engine brake.

Lo and behold, entering the corner, releasing the throttle, expecting a drop of speed.

and guess what.

the mother fucking thing kept going.
Ended up ploughing into the wall damaging the engine and the transmission which translates into the end of the race for me.


Its a real headache.
Tomorrow, I shall try and adjust the brake biasness, camber settings, tire pressure and gear rations IF i have time.


You know, after all this, I swear, that if my primary maths school teacher said that doing well in math is gonna help in tuning my car, I would have studied way way harder.

all that is left now, is a regret and eating people's exhaust.

Tomorrow, I shall go tweak the car again. This time, I'm determined to make it work.