2010/04/18 14:12:05
whoppa
yeh i lowered my preasure in the front and it improved a little bit and the backs where hard so i was trying to get oversteer but i couldnt ""yank"" the wheel as such it was not gripping at all... under breaking it was ok but still weird..

i have 13inch wheels sorry mate im not interested in the 15s cheeRS anyways
chris
2010/04/18 22:08:24
muzza
Andrew touched on one of the most overlooked issues in oversteering and car handling when people go to trackdays, most people pull in the servo and then pump their tyres to about 32PSI and then hit the track and wonder why their car handles poorly. When you hit the track your tyres cop a beating and the heat increases your tyre pressure enormously, One time my tyres went from 32PSI to 42PSI after 10 minutes on the track. You should always take a tyre gauge with you when you go to the track and adjust accordingly, I preffer approx 32 to 33PSI running temp, which could be as low as 23 24 cold temp.
2010/04/18 23:28:17
kestrel
Andrew, sorry, what I should have said is adjust your front tyre pressures to find the optimal grip. It may be up or down. [:I] Cheers

Edit: if you want to take a lot of trial and error out of it, invest in a temp probe. Take reading towards the outer edges (inside and outside)of the tread as well as the middle of each front tyre. There is quite a bit of stuff on the net that explains possible solutions depending on your readings - a lot of it is common sense. It can tell you a lot more than whether you need to increase or decrease pressure. You are looking for a reasonably even temp across the tyre (within reason. Also any good tyre dealer who sells R-spec or slicks should be able to give you plenty of tips. Or if the fella's who you are racing against are freindly enough ask them - as the ones that win because they often have it sussed. Depending on the track and the day you may find you run slightly different pressures for the front left and right. But most importantly have fun
2010/04/19 02:07:12
jpayne
any photos from the outside...these tell the tale so much better than a post. also even an F1 understeers if the driver tries to change direction way too quickly, slow in fast out, Iv never personally had an escort, standard or modified, understeer, driving style has a lot to do with it.

Cheers,

JP
2010/04/19 13:06:17
whoppa
thanks for the info guys
i lowered the tyred presure to about 32 ish
i tryed every driving style lol... i even tryed slow in slow out lol still no good.. it was like i had a locker and it was pushin it through the corner..
i did lie the slower i went the better if griped( of corse) but i wanted fast...
my tyres r poo.. nankangs with 205s all round and quiet a big sloppy bag so she would get some role...
dunnoo... ill have to keep looking into it...
mabi i need more power in the arse to bring the rear around to steer me through lol..
chris
2010/04/19 13:54:24
Andrew
How is your toe in / toe out set?
2010/04/19 16:53:59
whoppa
it got a wheels alignment the day b4 so she was mint hey
2010/04/19 21:18:44
Andrew
I mean what was it set to?
2010/04/20 08:14:37
jimmyd
quote:
Originally posted by whoppa

it got a wheels alignment the day b4 so she was mint hey



Need the full story on your wheel alignment....

Was it a $35 special at the second hand tyre store or a proper alignment?

Need the following info - if these are correct then you can start diagnosing chassis & suspension setup issues

Camber
Castor
Toe
Setback
Thrust angle
rear toe

Is it the same left & right turns?

What is your rim width?

Your current tyres-

Size - 205/60R13?
Brand -
Model -
Tread wear rating -


As an aside - same tyres front & rear? Even if crappy, with a neutral suspension set up and driven apropriately it should be drifting rather than understeer/oversteer (now I'm sure that will get some interesting comments.....)

Cheers

2010/04/20 17:24:47
whoppa
im currently not at home atm
but ill get the specs over the weekend
it was a proper one one of my dads mates owned his own suspention place for like 20 yrs but now hes a pedders
so it wasn't bodgy but ill get the specs up wen i can
chris
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