Sorry guys,
If you find dry bias OK in the wet then you're braking much too early in the wet which will not help turn in either. Either that or you've got too much on the rears in the dry.
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As with anything racing related, your mileage may vary.<o
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In some the race cars I’ve had experience with there is no brake adjustment as they are spec cars and it is disallowed. One has to make do with what they have although the sway bars can be adjusted. On the little Miatas race kit sway bars have enough adjustment to make a difference in the wet weather handling characteristics.
Malcolm's GT40 did have bias adjustment but the braking had nothing to do with the on track handling that I described. The handling problems we experienced in the GT40 at Donnington in the rain were present in non-braking situations. The transformation of even simply disconnecting his front roll bar was absolutely amazing. The improvement was simply akin to night and day. I don’t doubt that some braking bias adjustment could have improved his car in the wet, but I’m pretty sure we got more “bang for the buck” on the adjustments we did. Might have been just his car setup from the get go.<o
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The brake bias knob in my Z isn’t the only thing I reach for when the track gets wet. The first thing I do when the track gets wet is try to decide “do I really need to go out this session”. And, if the answer is yes, then put on the best “treaded” tires I have. Many racers INCREASE the tire pressure a bit over the dry temps to round the tire profile a slight bit and reduce hydroplaning (Hoosier recommends this for their DOT race tires I think, check their webpage). Bear in mind I’m generally in the boat of using non-rain race tires and I’m not sure the pressure increase would be all that important if you running a full-on rain tire. The DOT Hoosier R6s are really horrible in the rain, the DOT Toyo race tire is considerably better.<o
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After some tire juggling and bar setting then you’ll need to make sure you can see. With respect to the anti-fog I have found through trial and error the regular Rain-X does not work on the inside. But Rain-X does have a inside fogging product that works like a champ. It is harder to find though since the days of non-AC defrosting cars are gone. We have a vendor at the track that carries it and I was able to buy it from him on a rainy test day at Roebling road. I don’t know if this stuff works on Lexan but it’ll work on your glass front windshield.<o
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Let us know how you get on with your adjustments and be safe! <o
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