Last 2008 Autocross: SCCA at Le Grave, Nov 16, 2008

[Fair!]

Well its now or never - last SCCA event for 2008. Le Grave field is always fun and the drive is pretty easy, located at a semi-pro baseball team's parking lot in downtown Ft. Worth.

http://www.autocross.com/texasregion/ - details

http://www.axwaresystems.com/axorm/c...selectclubid=6 - registration





Wow, I don't think we've run at Le Grave in almost a full year. Amy and I are running the E30, possibly for the last time. We'll shoot some video and give it a good send off. Come join us!

[Fair!]

Re: Last 2008 Autocross: SCCA at Le Grave, Nov 16, 2008

Great event yesterday at Le Grave. After realizing this would probably be the last chance to try it with the stock suspension, Amy and I borrowed Brian's EVO instead of taking the E30. Sure is easy to take this to events - hop in and drive there, air up the front tires, and race! No tire swapping, no loading truck and trailer, just go - sweet.

The weather warmed up considerably and we were borrowing water to spray the overheating front Dunlops on the EVO after the 2nd runs. The almost 100% Stock EVO X was a huge marshmallow but it was still two tons of fun to drive! The only mod on the car - the 245mm Dunlop Star Specs - was the biggest contributor to these DL-1 data logged numbers (98% percentile, not peaks):

Lateral Grip: 1.00g (left) / 1.04g (right)
Braking: 0.98 g
Accel: 0.60g

The numbers were pretty good considering the MASSIVE pitch, roll, drive and camber loss the under-sprung stock suspension allows. It was hilarious!


Look at the massive lean in Cornering!


Accel and Braking made for big pitch and dive!

It was like driving a big parade float... except it had a LOT of acceleration, good brakes, and the auto shifting S-Sport mode was FLAWLESS. The car would use 3rd and 1st gears where no other racers dared shift, and the data logging shows seamless acceleration during upshifts where our manually shifted cars always have a big dip in speed and acceleration. The SST magic is NOT A JOKE - this semi-automatic dual clutch business is the Real Thing. You never have to even THINK about shifting, don't even have to flick the paddles, you just mash the throttle and it is ALWAYS in the right gear. Amy and I were both Left Foot Braking everywhere, and it helped considerably.

The course had a heavy emphasis on slaloms, but the stock EVO gobbled them up with ease. The active yaw control system seems to actually work - you have to be somewhat violent with the wheel but it sticks better than you would think. There were some long sweeping corners that the car didn't like so much, due to the lean and camber loss, and we lost a lot of time there to other cars and classes we gauge by. The maximum 1.02 g avg lateral grip number is pretty low for STU cars on 140-200 treadwear tires, as we usually see 1.15-1.3g lateral in our prepped STU and STS cars. The braking numbers are OK, about what we saw in our STS prepped E30 and the old STU classed STI, but nothing like the 1.1g braking we saw in our STU E36 M3. Even with massive 2-piece rotors and Brembo calipers, you can't make up for that much dive.

The acceleration was pretty impressive, considering this thing is still bone stock and pushing 3600 pounds of puddin' around. The slower corner exits were helped dramatically by the SST's use of 1st gear. Due to a weird starting light placement that occurred in a braking zone right before a corner, far away from the actual starting line, we didn't mess with launch control as it would have been pointless.

With two driver's using LFB we knew we'd be adding extra heat to the transmission so the custom trans cooler fan was used between each run. With 2 drivers in a somewhat small run heat we were a bit pressed for time, but we did manage 4-5 minutes between drivers to swap numbers, spray the front tires, swap data cards for the DL-1, adjust the seat, and give the trans time to cool. It never had a single fault or overtemp warning, so that problem seems licked. Glad we had removed the fog lights and housings, as another EVO X driver attested to their fragility - one cone and POW they're gone. We'll not have that problem. Although Amy did have some cone issues...


The car is very wide, much wider than her M3, and Amy took a bit to gauge the corners of the EVO

As you can see the other STU cars didn't have as much lean or dive, but they were already prepped.


L: Jason in Paul's 2005 STI (KWs). Right: Shawn in another EVO X (BC coilovers)


This is the last time this car will have this much lean!

Don't know how everyone ended up - I think I got 3rd in STU, about .3 seconds back from Paul in 1st. We'll post results and DL-1 data soon. The AST 4200 double adjustable shocks are already here and the last EVO X camber plate part we need is due later this week. We'll post more in the "Team Cars" thread when we get the suspension on. We've got a gaggle of exhaust parts here too, so we'll begin the custom 3" after-cat system maybe as soon as tomorrow night.

[hancheyb]

Re: Last 2008 Autocross: SCCA at Le Grave, Nov 16, 2008

RE: SST. This says it all

E36 M3 shift, This is time vs. mph. Red, purple and black all have a 2-3 shift.




Evo X MR, black line represents acceleration from 1st through 3rd (starting in middle of graph). Red is longitudinal acceleration. There was a cone in the middle of the section, hence the dip in acceleration. Peaked at 65mph. Possibly the two flat parts are from the shifts, but it is a little hard to tell since this data is on an autocross run and not a straight line ruling out other variables. The car never stops accelerating and the slope of the curve only changes slightly.

[hancheyb]

Re: Last 2008 Autocross: SCCA at Le Grave, Nov 16, 2008

Here's the screen capture of Terry vs Amy. Basically he's just faster everywhere and brakes later. Push it Punky!

http://vorshlag.smugmug.com/gallery/...180_6dMyn-M-LB

[hancheyb]

Re: Last 2008 Autocross: SCCA at Le Grave, Nov 16, 2008

Results up. I guess McCall wins the attendance award afterall?

http://autocross.com/texasregion/

1Tm STU 166 Paul Magyar Subaru STi Silver Dunlop 56.158 56.101+2 56.409+1 57.112+1 56.470+1 56.158
350983 Vorshlag Motorsports -
2Tm STU 66 Jason McCall Subaru STi Silver Dunlop 58.474+DNF 56.390+2 56.015+1 56.261 56.476+2 56.261
358922 Vorshlag Motorsports 0.103
3Tm STU 91 Wayne Atkins Honda Civic Si Black Bridgestone 57.545+1 57.479 56.423 56.422 56.261+2 56.422
282424 Atkins Design Group, Inc. 0.161
4 m STU 193 Terry Fair Evo Black Dunlop 55.751+DNF 57.481+1 56.440 56.855 56.636 56.440

[Paul]

Re: Last 2008 Autocross: SCCA at Le Grave, Nov 16, 2008

Congrats Jason on the season championship!

-Paul

[Redwood]

Re: Last 2008 Autocross: SCCA at Le Grave, Nov 16, 2008

Nice job, McCall!

[Fair!]

Re: Last 2008 Autocross: SCCA at Le Grave, Nov 16, 2008

I've been robbed! My first run was perfect! I punked you guys in the stock EVO and they stole it from me!



Hehehe... just kidding. The tires did get slower as they got hotter, and it shows for everyone that was two driving - Pauls best run was his first run, also. Pretty close times for the top 4 spots, though, with a big variety of cars in the class.

Gonna be fun seeing Paul in the 2008 STI next year against Hanchey in the 2008 EVO. STU is modernizing!

[hancheyb]

Re: Last 2008 Autocross: SCCA at Le Grave, Nov 16, 2008

I've been robbed! My first run was perfect! I punked you guys in the stock EVO and they stole it from me!



Hehehe... just kidding. The tires did get slower as they got hotter, and it shows for everyone that was two driving - Pauls best run was his first run, also. Pretty close times for the top 4 spots, though, with a big variety of cars in the class.

Gonna be fun seeing Paul in the 2008 STI next year against Hanchey in the 2008 EVO. STU is modernizing!

Hehe, the DL-1 data shows you took a nice short cut on Run 1.

[Fair!]

Re: Last 2008 Autocross: SCCA at Le Grave, Nov 16, 2008

Hehe, the DL-1 data shows you took a nice short cut on Run 1.

dont tell them that!

[McCall]

Re: Last 2008 Autocross: SCCA at Le Grave, Nov 16, 2008

dont tell them that!

I knew it! hehe... I'm just glad I got a clean run so I could win the championship (3 wins/4 2nds). Thanks again Paul for the co-drive!!

[Thinkkker]

Re: Last 2008 Autocross: SCCA at Le Grave, Nov 16, 2008

Gonna be fun seeing Paul in the 2008 STI next year against Hanchey in the 2008 EVO. STU is modernizing!

Dangit, now I will have to make it up for some stomping of my own!


McCall Congrats!