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Old 01-22-2012, 08:47 PM   #129 (permalink)
ChrisSlicks
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Originally Posted by SPOHN View Post
Could you please explain this more? It's obvious to me our cars have forward weight bias. So how does having stiffer springs up front effect weight transfer towards the front? Never really thought about this before so I don't really know. Seems it would be the opposite. But I also know how that goes.
In my experience it is worse with softer springs as there is more compression and a longer time period during which the weight transfer is occurring. I can reproduce this somewhat if I run the dampers near full soft as I do sometimes in the wet. With the stiffer setup there is less dynamic weight transfer and the time period during which the transfer occurs is shorter which means you can get on the brakes harder and sooner.

This is one of the reasons I like the lower torque compounds, however it can be tough finding a low torque compound that can handle the heat. Last year I ran an endurance racing compound, the (CL Brakes) RC6E which is only 0.5 on the friction scale but can take a ton of heat and is very consistent. It's probably a little harder on the rotors, but for me after a season they are done anyway from heat fatigue. I think the RC6 compound is very similar but more rotor friendly (and wears twice as fast). Next season I will compare them with the slightly more aggressive RC8 compound (about 0.62) and see if I have more difficultly staying out of ice mode. The comparable information I got about Carbotech is XP8 = 0.55, XP10 = 0.60, XP12 = 0.65.
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