Ian Anderson
Lifetime Supporter
I took the car out for a run today
Dax had an open day and so we went back to her birthplace even although some rain had been predicted.
Well the day was not too bad and I left for home after causing a stir amounst the Seven and Cobra crowd as most were newbies and did not know Dax had made a GT40 in the past.
Anyway on the way home the heavens opened - even a bit of hail so not really GT40 weather but as I was on the motorway not much I could do!
I was in the "slow" lane at about 60mph and she swapped lanes and ended up in the central lane. I dragged her back to the left lane and she wagged her tail a few times through surface water puddles.
At 50-55mph she would walk left and right across the whole lane as the water depth varied.
At 45mph she was controlable so long as I stayed out of the "tramlines" made by the heavy trucks. So slow progress until we cleared the storm.
Now the tyres re not brilliant wet tyres - BF Goodrich 205 front and 255 rear so not major width either which should assist in the wet. Tread depth is good on all tyres (6-8 mm)
But to move so much seems excessive. I have aquaplaned a car before (all 4 wheens) but this feels more like keeping traction on one and aquaplaning the other.
So where to start looking? And how to measure what is not right?
I have thought for a while I have had some bump steer effect on the rear of the car as when going thrugh a sweep (like motorway junction) turn into the corner and then I feel the back "settle" and require me to add some more steering input to keep the desired line.
I am not running any anti roll bars
the diff is open (not LSD) but said to be a 4 spider unit if that makes any difference
The rear end is pretty well all rose jointed (Rubber on front of radius arms and inside of rear suspension mount points)
Front has no adjustment other than Toe
Shocks are SPAX all around - not sure if adjustable - how do I tell?
Car is not lightweight 1150 kg at SVA(neither am I)
Car is a road car with occasional fast blasts. (Too noisy for most UK tracks)
What more input can I give to be given some info on where to start looking?
Ian
Dax had an open day and so we went back to her birthplace even although some rain had been predicted.
Well the day was not too bad and I left for home after causing a stir amounst the Seven and Cobra crowd as most were newbies and did not know Dax had made a GT40 in the past.
Anyway on the way home the heavens opened - even a bit of hail so not really GT40 weather but as I was on the motorway not much I could do!
I was in the "slow" lane at about 60mph and she swapped lanes and ended up in the central lane. I dragged her back to the left lane and she wagged her tail a few times through surface water puddles.
At 50-55mph she would walk left and right across the whole lane as the water depth varied.
At 45mph she was controlable so long as I stayed out of the "tramlines" made by the heavy trucks. So slow progress until we cleared the storm.
Now the tyres re not brilliant wet tyres - BF Goodrich 205 front and 255 rear so not major width either which should assist in the wet. Tread depth is good on all tyres (6-8 mm)
But to move so much seems excessive. I have aquaplaned a car before (all 4 wheens) but this feels more like keeping traction on one and aquaplaning the other.
So where to start looking? And how to measure what is not right?
I have thought for a while I have had some bump steer effect on the rear of the car as when going thrugh a sweep (like motorway junction) turn into the corner and then I feel the back "settle" and require me to add some more steering input to keep the desired line.
I am not running any anti roll bars
the diff is open (not LSD) but said to be a 4 spider unit if that makes any difference
The rear end is pretty well all rose jointed (Rubber on front of radius arms and inside of rear suspension mount points)
Front has no adjustment other than Toe
Shocks are SPAX all around - not sure if adjustable - how do I tell?
Car is not lightweight 1150 kg at SVA(neither am I)
Car is a road car with occasional fast blasts. (Too noisy for most UK tracks)
What more input can I give to be given some info on where to start looking?
Ian