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Author Subject: Understeer.
oldbrownshoe

Seasoned Pro

Location: Holon Israel

Registered: 08 Aug 2008

Posts: 1,795

Status: Offline
Post #51
fbmmart wrote:
On a FWD vehicle the rear end just trails around.
Reducing the rear grip, will balance out the understeer.

why choose the diminishing rout to balance the
understeer ?
increasing the front grip instead , will balance
the understeer too and you'll get increased overhaul grip instead of reduced one.
wider griper tire in the front will do the job.

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Posted 3rd Apr 2010 at 02:11
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lotek

Seasoned Pro

Location: Berkshire

Registered: 04 Dec 2007

Posts: 6,107

Status: Offline
Post #52
well the hybrid arb made a world of difference.

my next move will be either 888's again on 15's
or slicks on 17's
after that coilovers with excentric mounts etc

but for now the hybrid arm has completely transformed the car, i was a bit dubious before fitting it. thinking 'it aint gonna do shit' how wrong was i!
Posted 3rd Apr 2010 at 04:50
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lotek

Seasoned Pro

Location: Berkshire

Registered: 04 Dec 2007

Posts: 6,107

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Post #53
also gona book tuition aswell Yes
Posted 3rd Apr 2010 at 04:53
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fbmmart

Junior User

Location: Brixham

Registered: 05 Dec 2007

Posts: 99

Status: Offline
Post #54
phillipm wrote:
Throttle before the apex?
Bugger that.


Do you mean buggar any throttle, or just accelerating ?
Posted 3rd Apr 2010 at 15:30
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fbmmart

Junior User

Location: Brixham

Registered: 05 Dec 2007

Posts: 99

Status: Offline
Post #55
Totally agree !
Although, the diminishing route can be solved with a large dose of weight transfer from your right foot LOL


oldbrownshoe wrote:
fbmmart wrote:
On a FWD vehicle the rear end just trails around.
Reducing the rear grip, will balance out the understeer.

why choose the diminishing rout to balance the
understeer ?
increasing the front grip instead , will balance
the understeer too and you'll get increased overhaul grip instead of reduced one.
wider griper tire in the front will do the job.
Posted 3rd Apr 2010 at 15:34
Profile
daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline
Post #56
fbmmart wrote:
phillipm wrote:
Throttle before the apex?
Bugger that.


Do you mean buggar any throttle, or just accelerating ?


On my last trackday and several before my instructor told me I should ideally be on a neutral (not accelerating or decelerating) throttle from the end of my braking/turn in point all the way to the clipping point or apex, from then on I should be progressively feeding in the power whilst removing steering lock for a fast, smooth corner exit. Thats all classroom stuff, and in the real world you deal with each section on a corner by corner basis, but it seems to work, the smoother you get the more natural it becomes and you get less pronounced weight tranfer and the car does'nt get so unsettled.

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Posted 3rd Apr 2010 at 15:41
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fbmmart

Junior User

Location: Brixham

Registered: 05 Dec 2007

Posts: 99

Status: Offline
Post #57
Absolutely.. It's a good way to drive fast safe and smooth..

In the wet at Combe my instructor was telling me to carry more speed than normal into the corner, gentle on the brakes, turn in a bit late, catch the slide of power through the apex..

Certainly worked, coming over avon rise at 110mph in the wet as opposed to 120 in the dry.. Briliant fun aswell !


daveyboy wrote:
fbmmart wrote:
phillipm wrote:
Throttle before the apex?
Bugger that.


Do you mean buggar any throttle, or just accelerating ?


On my last trackday and several before my instructor told me I should ideally be on a neutral (not accelerating or decelerating) throttle from the end of my braking/turn in point all the way to the clipping point or apex, from then on I should be progressively feeding in the power whilst removing steering lock for a fast, smooth corner exit. Thats all classroom stuff, and in the real world you deal with each section on a corner by corner basis, but it seems to work, the smoother you get the more natural it becomes and you get less pronounced weight tranfer and the car does'nt get so unsettled.
Posted 3rd Apr 2010 at 15:49
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phillipm

Seasoned Pro

Location: Rotherham

Registered: 15 Oct 2006

Posts: 20,607

Status: Offline
Post #58
Just the accelerating Wink

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Posted 3rd Apr 2010 at 18:16
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