Well, I'm not saying I can feel no lift at T1, but I don't feel lift to be a problem there. Maybe my factory aero package (front chin spoiler, rear lip spoiler, side strakes) does the trick? I highly doubt it. Hmmm... My miata also had front chin spoiler and rear lip spoiler. Or maybe topdown does the trick. I drive (drove) both topdown at PR. Hmmm... but I still doubt it. My E36 BMW doesn't have any aero device but was also extremely stable at T1, but then it didn't have the oomph or got a chance to run the old SIR setup to get up close to 130 at T1.

 

Define "problem"....

I can feel the car getting light. It doesn't keep me from putting it where I want to put it, though. And I almost always have the top down on the track.

 

We could be overlooking the simplest solution which is to get the driver bigger balls. Maybe you are just scared of the speed? Coming into a corner at 130MPH is not something an average person feels completely comfortable with. I know my kahuna's are only good to about 120.

 

My definition of a problem is it's something that I need to fix. I don't feel like lifting is a problem at T1 and I don't feel the need to add any aero device for that. I don't feel any instability as I turn in for T1. The car became unstable only when exiting the drag strip over the uneven pavement. And that was on my bad tires that caused veering on varying throttle in any situation (including going straight, don't get me wrong, I don't lift thru' T1). Now that I've got new tires and the car doesn't veer on varying throttle any more, I'm pretty confident that the car will be much more stable thru' T1.

 

That's true.

I don't know about the 130-mile corner Red MX5 was talking about, but the 130-mile T1 at PR isn't that scary for me. This is mostly because T1 is so close to T2 that I don't need to track out of T1. That means tons of room to ease up on the steering if anything happens. I've done over 1000 laps there with my miata (though about half of them were with the newer layout that slowed down to more like 120 for my miata), probably 70 laps with my BMW, and probably 200 with the S. The miata and BMW were so stable there that I wished I had much more power and be able to get up to 135-140 thru' T1. For the S with stock suspension, I can't wait to try out my new tires and see how it goes.

Also, I agree with you about lowering the car should make the biggest difference. For me however, I'm really interested to see what stock suspension can do now that the veering problem is gone with new tires and I would like to keep running stock suspension as long as possible because this is about the ONLY car I'd like to drive with stock suspension on the track.

 

I am going about 120-125 through T1, by the way, after going through T9 as fast as I dare and being flat out all the way after that. It is true that certain race cars can go through there at 175+, but I highly doubt a stock S2000 is going to see 130 at T1. That would be sixth gear, BTW. Are you in sixth?

PS. here's the datalogger info to prove it:
http://www.eskimo.com/~mikeg/racepak/

 

I have AEM CAI and I have measured its performance against stock airbox by going thru' a fixed stretch of road which allows 0-192km/h for the AEM while the stock setup could only reach 186km/h.

OK, maybe not exactly 130 at T1. I use my indicated 201 km/h and convert it to 125 mph. And then the conversion from the oversized 255/40/17 to stock 225/50/16. For this conversion I use my numbers from the trip odometer reading for my fixed return trip from work back home, starting from the exact same parking spot, exact same route, exact same lane-use, and re-do over at least 4 times for each set of tires. I got 13.4km using the 255 but 13.9km with the 225. That's how I came up with 130. I can understand the cumulated errors and inaccuracy of the car's speedo.

 

Not trying to criticise your driving since you turn faster lap times than I do but sounds like you don't go WOT thru' T9? I go WOT soon after apex of 8 and all the way thru' 9 and everything til braking for T2 when I got 201 indicated.

 

There's not any rush, and I'm one of those people who likes to change only one thing at a time. At this point I'm absolutely convinced that I need a little toe-in up front, and I'll do that next time I take the car to the shop. Except for the time involved, alignment changes are free.

I'll have to see how the toe affects low speed handling (as well as high speed) before I change anything else.

RACE MIATA, do you know if adjustable aluminum wings can be adjusted for zero downforce? I'm wondering if I can put an wing on the can and then adjust it so I can test suspension changes without any effects from the wing.

 

WOT. "As fast as I dare" is a reference to the line. The more to the right you are at turn-in, the faster it is -- until you run out of track on the exit.