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Joe's tire pyrometer is your friend Aaron. After each run measure tire temps inside, middle and outside and adjust pressures until it's as even as you can get them at end of run.
My setup likes 37 psi up front and 32 psi rear on my $7 O'Reilly tire gauge. Your results may vary... |
Barney
Lance,
Looks like you and the car are becoming one That is when most of the things are working right I can do it in my Pantera (because of lots of seat time) but the Firebird is a way off for me right now... I used to drive the wheels off that car but too many changes Hopefully I will be able to tweak things like you are doing as that is when it all works... good job Back in the day (yes I am an old guy) we just drove the car and adjusted... now you can adjust the car to work for you... amazing how things have changed Bob Bob |
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I'm trying the RS3's just to try them I guess. I'm gonna run a 275/285 combo. Currently with the RE71s I'm at 265/275. I've never tried to fit a 275 up front and I'm expecting some (more) rubbing. Although the RS3 275 is only 0.2" section width wider than the 265 on there now. Tread width is bigger. Hopefully next year I won't have this dilemma as I'll be on a square setup. |
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I've been running in the 26-30psi range (cold) fwiw. Thanks Lance. |
I discovered I was running my fronts much too low with my pyrometer and some diligent post run data collection I learned from Mr Sutton.
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Spent the day yesterday at Raceway Park of the Midlands making laps in Barney at the Momentum Performance Driving Academy put on by the WRL. Had a blast, learned a ton...really like this track. The horsepower upgrades over the winter were very well utilized today for sure.
This video is of my last session of the day, starts off with a 75% warmup lap then 4 laps at speed, the second to the last lap was my fastest of the day...in the heat of the day too. I learned some driving line tricks while following Rodney Giebel and Mike Norman and then Ron Sutton helped out with some tuning tips to make it all come together. The video then gets a little exciting about the 9:50 mark...at the end of the long straight when the brakes went away. I called it a day right as I made the corner... :D We are supposed to have another full day today, given that it's raining right now...and I don't really feel like bleeding my brakes in the,I'm not sure if I'll get back out on the track today or not. Either way, it's been a great weekend already...thanks to Joey Todd and the rest of the WRL crew for debuting this new venture here and letting us come along. |
Lance, you handled the situation very well, and I must say your car looks to be very well sorted out, minus the brakes. Are you going road course brake package, at this point? And what was that blowing around in your car in the video? Helmet bag maybe?
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Thanks Scott, I like to think I lean toward the safe side when out on track and I pushed harder this weekend than I ever have before. It spooked me pretty good when the brakes didn't grab right away when I hit the pedal...because they were fine in 14 before the long straight. I just stayed on them and hoped to scrub enough off to make the turn.
What I found out today out there in the wet is...I can carry a LOT more speed through turn 1 than I was all day on Saturday. We had a lot of fun in the first to real wet sessions and then one more semi dry session today before packing it up. I'm not sure if I'll take the time to cut up and post the video as it looks painfully slow, but if you watch it you can see me figuring out the edge of the grip and how to sneak up on it closer and closer with each lap. I LOVED running in the wet. It's easier on the car and puts way more back into the hands of the driver. We did two 20 minute session back to back and I wanted to go back out for more. Saturday I was stopping 1-2 laps before the checkers because my stuff was wore out already. That is the tail of the passenger side shoulder harness flopping around every now and then. Usually I have them tied up but I needed to carry an instructor to get qualified for my license so I had them out and loose and never tied them back up again. |
What license are you going for Lance?
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I have several friends with Endurance Racing teams that have been bugging me for years to go racing with them, mainly in World Racing League events and some Chump car. Not having all of my personal safety gear was one thing holding me back and not having a competition license was the other.
I now have all of my own safety gear and this weekend was approved for my WRL Competition License...which means if I decide to rent a seat for a weekend at least at a WRL event, I can. Just in case you aren't familiar, endurance racing is typically a low budget car with multiple drivers and the events are anywhere from 7-12 hours long, usually one on Saturday and another on Sunday. One friend has a team with now two Mazda Miatas and another has an BMW E36 team. I got to know several other teams at this event as a lot of WRL owners\drivers were there at the event as drivers. |
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