1.1g barrier?

[indianamoon]

Assuming here that the OP means cornering.

I believe that JBL's will exceed that.

Don't believe that there is any correlation between aerodynamics and g-force achievable, correct me if I am wrong

[Jdata]

Originally Posted by indianamoon

Assuming here that the OP means cornering.

I believe that JBL's will exceed that.

Don't believe that there is any correlation between aerodynamics and g-force achievable, correct me if I am wrong

Yes I meant cornering. Lateral G. In this case...mechanical grip

[Bearwolf]

Originally Posted by indianamoon

Assuming here that the OP means cornering.

Don't believe that there is any correlation between aerodynamics and g-force achievable, correct me if I am wrong

The only correlation I'm guessing lateral g-force would have with aerodynamics would be, reducing lift could increase traction and increasing downforce could increase traction, both leading to the possiblity of being able to maintain a higher lateral g load.

[spdbrake]

Jdata,

I'm guessing your referring to the 200 ft skidpad that is the benchmark for testing as in Road and Track etc...
I know manufacturers use the data, but I don't imagine very many if any folks test their cobras in that manner.
Skidpan world record

[Richard Hudgins]

Originally Posted by indianamoon

Assuming here that the OP means cornering.

I believe that JBL's will exceed that.

The only good data that I still have of skid pad testing was back in 2004.

JBL Comp chassis/302 on 200 ft skidpad at Willow Springs with Michelin Pilots

Best lap = 14.52 seconds = 1.16g.
Average of 5 continuous laps 15.1 seconds = 1.08g. Chassis set for minor understeer with front bar @70% and rear bar @55%.

Same car with Hoosier R DOT slicks.
2nd lap = 13.1 seconds= 1.43g. Chassis set for minor oversteer with front bar @80% and rear bar @85%.

Had to stop Hoosier test as the sump could not control oil and the low oil red light would come on during the lap. Also had problems with the carburetor at these lateral acceleration numbers.

I have somehow lost the data set that we had for a injected 358 ci dry sump car but I am pretty sure that the car was no quicker than the 302 car on the skid pad.

However I remember that this 358 car Hoosier test was interesting in that when doing the 5 lap test the times dropped off severely on the 4th and 5th lap as the rear traction went away so badly that the owner/driver thought he was throwing oil out of the dry sump tank or had a bad pan leak.

It was actually that the car had so much motor that the driver was driving with the throttle and not really achieving solid state loading. This made the rear tyre temperatures exceed 135C and was actually liguifying the compound.

In essence he was drifting the car and that is not the way to drive a skid pad. So the numbers he achieved were pretty meaningless as a comparison.

But he had a lot of fun.