Terminal understeer...
27 September 2005, 05:53 PM
#1
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Terminal understeer...
Knockhill... hairpin.... braking hard... turning in under braking... still understeering (was wet mind...) new yoko's up front... lost a lot of time due to simply sliding... in the dry I don't have a problem.. car seems to sort it out... in the wet lol... nae chance...
Any tips on setup or technique ?
Any tips on setup or technique ?
28 September 2005, 05:15 PM
#4
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Originally Posted by pappasmurf
Yoko Pradas?.......very good in the dry but not very good in the wet....in fact terrible.
Try better tyres.
Try better tyres.
28 September 2005, 09:18 PM
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Try Toyo Proxies or Goodyear Eagles.
I have Eagles and am very pleased with them....exceptionally good in the wet and now i have an uprated rear whiteline anti roll bar and whiteline solid drop links all round with eibach sport springs along with a Roger Clark motorsport fast road use geometry/allignment setup, i get hardly any understeer, turns in beautifully and corners flat.
In fact i've even had the back end wobble a bit on a couple of occasions.
Classic UK turbo MY00
I have Eagles and am very pleased with them....exceptionally good in the wet and now i have an uprated rear whiteline anti roll bar and whiteline solid drop links all round with eibach sport springs along with a Roger Clark motorsport fast road use geometry/allignment setup, i get hardly any understeer, turns in beautifully and corners flat.
In fact i've even had the back end wobble a bit on a couple of occasions.
Classic UK turbo MY00
29 September 2005, 02:25 AM
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proxes arent amazing... had T1R's fitted all round... good in the dry but pretty average in the wet...maybe i am too used to 4wd but i was expecting a difference from my P-zero's and there wasnt any.
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29 September 2005, 05:32 PM
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Originally Posted by pappasmurf
Go for Goodyear eagles then.....love the wet.
30 September 2005, 02:06 PM
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Turning in under braking, theres your problem, a lot of the grip from your front tyres is being used to slow the car down, then there's not enough left to turn it hence the understeer
If you are having to brake in a corner, then youv'e approached the corner too fast
Slower in faster out is the fastest way round a corner
If you are having to brake in a corner, then youv'e approached the corner too fast
Slower in faster out is the fastest way round a corner
30 September 2005, 04:52 PM
#11
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I used to do all my braking in a straight line then turn in, however after an outing @ knockill with instructor was told to brake into corner... guess it will take time.. 
30 September 2005, 10:26 PM
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it depends on the corner surely? A long sweeping corner that tightens will require brakes all the way in, whereas a hairpin will need a nice straight brake and gentle power through and then full throttle out, and so on...
30 September 2005, 10:33 PM
#13
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Originally Posted by tath
it depends on the corner surely? A long sweeping corner that tightens will require brakes all the way in, whereas a hairpin will need a nice straight brake and gentle power through and then full throttle out, and so on...
11 October 2005, 01:31 PM
#16
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It's a classic case of poor brake bias. Impreza's have too much front bias for this. In the dry, the weight transfer helps sort things out but this doesn't happen in the wet so the car understeers. It also takes longer to stop so you are loosing time there as well.
There are a number of areas where you can help dial this out. The most obvious is variable brake bias. However, that's complicated and best left alone. Another easier way is a tyre mix. Basically, grippy fronts and less acpable tyres on the rear. Finding the right balance is a time consuming operation though. Perhaps a number of friends can help out by loaning wheels. Tyre wear is less of a problem in the wet.
Tyres can make big balance changes. Smaller changes can be achieved by varying tyre pressures. You could try dropping the rears by a few psi.
Geometry changes may help. More font negative camber for example. However, this aproach may give too much dry oversteer. Adjustable front camber?
There are a number of areas where you can help dial this out. The most obvious is variable brake bias. However, that's complicated and best left alone. Another easier way is a tyre mix. Basically, grippy fronts and less acpable tyres on the rear. Finding the right balance is a time consuming operation though. Perhaps a number of friends can help out by loaning wheels. Tyre wear is less of a problem in the wet.
Tyres can make big balance changes. Smaller changes can be achieved by varying tyre pressures. You could try dropping the rears by a few psi.
Geometry changes may help. More font negative camber for example. However, this aproach may give too much dry oversteer. Adjustable front camber?
13 October 2005, 08:43 PM
#17
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Originally Posted by John 37
It's a classic case of poor brake bias. Impreza's have too much front bias for this. In the dry, the weight transfer helps sort things out but this doesn't happen in the wet so the car understeers. It also takes longer to stop so you are loosing time there as well.
There are a number of areas where you can help dial this out. The most obvious is variable brake bias. However, that's complicated and best left alone. Another easier way is a tyre mix. Basically, grippy fronts and less acpable tyres on the rear. Finding the right balance is a time consuming operation though. Perhaps a number of friends can help out by loaning wheels. Tyre wear is less of a problem in the wet.
Tyres can make big balance changes. Smaller changes can be achieved by varying tyre pressures. You could try dropping the rears by a few psi.
Geometry changes may help. More font negative camber for example. However, this aproach may give too much dry oversteer. Adjustable front camber?
There are a number of areas where you can help dial this out. The most obvious is variable brake bias. However, that's complicated and best left alone. Another easier way is a tyre mix. Basically, grippy fronts and less acpable tyres on the rear. Finding the right balance is a time consuming operation though. Perhaps a number of friends can help out by loaning wheels. Tyre wear is less of a problem in the wet.
Tyres can make big balance changes. Smaller changes can be achieved by varying tyre pressures. You could try dropping the rears by a few psi.
Geometry changes may help. More font negative camber for example. However, this aproach may give too much dry oversteer. Adjustable front camber?
19 October 2005, 04:54 PM
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Just drive the car and stop complaining about bull**** 
Originally Posted by John 37
It's a classic case of poor brake bias. Impreza's have too much front bias for this. In the dry, the weight transfer helps sort things out but this doesn't happen in the wet so the car understeers. It also takes longer to stop so you are loosing time there as well.
There are a number of areas where you can help dial this out. The most obvious is variable brake bias. However, that's complicated and best left alone. Another easier way is a tyre mix. Basically, grippy fronts and less acpable tyres on the rear. Finding the right balance is a time consuming operation though. Perhaps a number of friends can help out by loaning wheels. Tyre wear is less of a problem in the wet.
Tyres can make big balance changes. Smaller changes can be achieved by varying tyre pressures. You could try dropping the rears by a few psi.
Geometry changes may help. More font negative camber for example. However, this aproach may give too much dry oversteer. Adjustable front camber?
There are a number of areas where you can help dial this out. The most obvious is variable brake bias. However, that's complicated and best left alone. Another easier way is a tyre mix. Basically, grippy fronts and less acpable tyres on the rear. Finding the right balance is a time consuming operation though. Perhaps a number of friends can help out by loaning wheels. Tyre wear is less of a problem in the wet.
Tyres can make big balance changes. Smaller changes can be achieved by varying tyre pressures. You could try dropping the rears by a few psi.
Geometry changes may help. More font negative camber for example. However, this aproach may give too much dry oversteer. Adjustable front camber?
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