Plowing Understeer
08-09-2006, 09:51 AM
#1
Thread Starter
Plowing Understeer
This weekend I ran my car at the Redline time attack event
The track is kind of an anomaly as it's off camber in many turns even has a Karosell type turn and a crown in some of the corners.
I was getting horrible understeer in some of the corners, so bad the car felt like a FWD car in places. These were all tight 2nd gear decreasing radius turns.
Turn in is ok, just mid turn the car would start to plow, I either had to lift to get the car to rotate (which was not very smooth) or just nail the throttle to wheelspin and drift the car around (much more fun)
I tried tire changing tire pressures and shock settings, even removed the wing for the last attack run.
I only have about 2.5 degrees of front camber (max) will much more camber cure this? I will need some sort of camber kit
Should I run a hair of front toe out?
Could a worn bushing be the cause of something like this?
Here is the track layout
The track is kind of an anomaly as it's off camber in many turns even has a Karosell type turn and a crown in some of the corners.
I was getting horrible understeer in some of the corners, so bad the car felt like a FWD car in places. These were all tight 2nd gear decreasing radius turns.
Turn in is ok, just mid turn the car would start to plow, I either had to lift to get the car to rotate (which was not very smooth) or just nail the throttle to wheelspin and drift the car around (much more fun)
I tried tire changing tire pressures and shock settings, even removed the wing for the last attack run.
I only have about 2.5 degrees of front camber (max) will much more camber cure this? I will need some sort of camber kit
Should I run a hair of front toe out?
Could a worn bushing be the cause of something like this?
Here is the track layout
08-09-2006, 10:14 AM
#4
Thread Starter
Comptech Front ADJ bar (On softest setting)
Stock 02 rear bar
225 Ra1 front (16") 245 Ra1 rear
-2.5 camber front, -3.5 camber rear
0.02 front toe in total
0.35 toe in rear total
Stock 02 rear bar
225 Ra1 front (16") 245 Ra1 rear
-2.5 camber front, -3.5 camber rear
0.02 front toe in total
0.35 toe in rear total
08-09-2006, 10:19 AM
#5
Thread Starter
A few notes,
My RA'1s had about 6 events on them before this, I had them flipped and rebalanced prior to Sunday.
They had significant wear already on the outside edges (fronts)
no cording though.
I may have cooked them their first outiing in May, came back in the mid 40's hot.
My RA'1s had about 6 events on them before this, I had them flipped and rebalanced prior to Sunday.
They had significant wear already on the outside edges (fronts)
no cording though.
I may have cooked them their first outiing in May, came back in the mid 40's hot.
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08-09-2006, 01:12 PM
#8
Registered User
I'll make the suggestion that you may be over-driving the car into the turn. My Spec Miata will understeer into a turn (especially a tight one) if you carry too much speed. Once I learned to slow down my corner entry and rotate the car early before getting on the throttle, the understeer greatly diminished. Not only that, because I could get on the throttle sooner, my lap times improved.
08-09-2006, 01:20 PM
#10
Registered User
Originally Posted by CoralDoc,Aug 9 2006, 02:12 PM
I'll make the suggestion that you may be over-driving the car into the turn. My Spec Miata will understeer into a turn (especially a tight one) if you carry too much speed. Once I learned to slow down my corner entry and rotate the car early before getting on the throttle, the understeer greatly diminished. Not only that, because I could get on the throttle sooner, my lap times improved.