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We learned several things at this event:
Don't ship FedEx. Houston traffic sucks no matter the time of day. The Mustang isn't putting power down well. Or turning all that well. Slaloms are a mess. I put the seat to far back for my co-drivers. This car needs much more development. Oh well, this event offered up 28 more autocross runs between us - more testing never hurts with a new car, even if its losing badly at an SCCA National Tour.
So we bombed 300 miles back to Dallas and somehow logged 1000 miles for the weekend - meaning we drove just inside the Houston city limits for a solid 400 miles. Did I mention I hate Houston traffic? Monday we unloaded and prepared for yet another short week and a 3 day weekend of racing, this time at the SCCA ProSolo in Mineral Wells, TX. Before this event we slapped on the rear DTC-60 brake pads that arrived and bled the system with Motul 600 fluid. We had been testing an all new, non-inverted single adjustable rear shocks were found over at AST-USA that we wanted to run, and they had been working great the past week. With some custom machined bushings out back they fit the S197 very well - adding more bump travel. AST now wanted us to try some new super-digressive pistons in the rear shocks that sounded like what we needed to control the excessive brake dive/rear axle rise. We also re-mounted the seat forward 2 inches and it fit Amy and Costas much better - no pillows needed! Since Mineral Wells just chews up race tires and street tires like a meat grinder, I had the still new Toyo R1Rs removed from the 18x9" wheels and mounted the Yokohama AD08s again. Cleaned up everything, reorganized the trailer completely, and loaded up for a Friday morning tow out to the event site 2 hours across Dallas and Ft. Worth (somehow this is still a local event for us).
March 25-27 - Mineral Wells SCCA ProSolo (Mustang)
Amy and I got to MW around 10:30 Friday morning after picking up McCall, who was coming out to the site to help out the local SCCA region set-up for this National ProSolo event. We were soon joined by Costas and the 4 of us pitched in to work the gate, set-up the region trailer stuff, the Vorshlag vendor table, and try to lend a hand wherever needed. Amy and I had entered in the EVO school, which was just some classroom coaching on the event format (its been years since we ran a ProSolo), and then several test starts on the .500 drag race tree.
A ProSolo is a unique event combining a pair of mirror imaged autocross courses and a drag race start, with your best times from each side added together for a total time in class, and we had 6 runs on each side over 2 days to get it right. Reaction times count and you can red light or cut a slow reaction time, which can hurt your run times or DSQ the run (red light). Drag race starts with a nice straight at the beginning of each run. Lots of power... runs 12s stock. Should be a good fit for the Mustang, right?
Well, when the straights are a good 1000+ feet long, sure, it helps... But on this course set-up this time the starting straights barely took up 1st gear in the Mustang before the first turn, and we lost out badly to the AWD cars (2.2 sec 60 foot times in the Mustang vs 1.8 sec in the AWD VW in our class) and barely matched the RX8s and BMWs in class. So any hope for advantage was just not there.
We quickly noted a new problem with the brakes on Saturday - ABS Ice Mode. When the brakes were pressed quickly the ABS system freaked out and you lost 50% or more of the braking power, and we all blew many turns on course because of this. We don't know what it was, but the only change since the previous weekend when the brakes worked SO well was a swap to DTC-60 race pads out back and the change back to AD08s, but we had run these tires before. The surface was different as well, but I have run at Mineral Wells dozens of times over the past decade, never seeing anything like this. WTF??
We ended up switching from "drive into the corner on the brakes to load up the front tires, just so it will turn" method of driving this plowing pig, to more of a "momentum/Miata" driving style, trying to reduce the time under braking and maximize lateral grip and slalom speed. Driving into a corner on the brakes is a work-around for a pushy car, and Costas and I have used this on many Pony cars in the past, but it just wasn't possible when the brakes were not there. The momentum method sort of worked, and kept the car out of ABS and Ice Mode, but sure was frustrating as all hell. We were dead slow in the big sweeping corners and we knew it.
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