CSX3170 on 200TW tires chapter three

[Cobra #3170]

I thought I would post an update on our effort to make my car handle with 200 TW tires. We have found that the car is very sensitive to rake angle and works well within a .1 to .2" range, a big surprise to me. We are running 3.2" front ride height frame to ground and a 3.4" rear ride height. I used to run as much as .7" of rake but it doesn't work nearly as well as the low rake set up. Front camber is -4.0 and rear is -2.7 tire wear looks even with these camber angles. Front wheel rate is down around 140 lbs/" which is quite low rear is 235 lbs/" which seems to work well with fronts. Rear bar is .562 solid and front is 1.25 hollow, it seems to balance the car when both are either full hard or full soft. We are now changing front springs in 25# increments and seeing significant differences so the car is sensitive to changes at these settings. Maximum cornering G's are around 1.01 so no cigar there. We are going to try some different rears in a few weeks because of rear wheel spin but are just about locked in on the suspension springs and bars. I lowered the front roll center to around 1" and it seemed to help initial turn in, rear is 1.75". Shock settings really help us to adjust to varying surface conditions, especially rebound. Shocks are Penske 8700 triples. I put Torsen thrust bearings under the spring seats and we can actually change ride height on the grid now by jacking the rear up, turning by hand and counting turns, a great tuning tool. Last time out we picked up 2 seconds by raising the rear ride height .15" to eliminate mid corner understeer.
Here is a video of me overdriving the crap out of it, but it was fun.

[ame]https://www.youtube.com/watch?v=-oVRJKivBls[/ame]