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Some guys there were running with racing slicks. My tires were street legal. I think the fastest time was 65 seconds. I fell in the middle of the pack. But the important thing is: I was invited by my brother-in-law who does this ALL THE TIME. The dance at the end of my lap was because I beat his best time by .06 seconds.
June 5, 2011 Autocross Results
Last edited by kgb; 06-10-2011 at 11:38 AM.
Model S #5253 - Black 85kWh
Looks to me like you did pretty well. You brought your times down in every run, and wound up with a respectable time for street tires.
We could check with Roger, but I don't think your tire pressures are high for street tires. He may set low because he's running R tires.
If you are still getting some understeer, you could try more pressure in front. Often, the understeer is because the front tires are rolling
over onto their edges. You can mark them with chalk to check that. If the chalk is wearing off, you need more pressure.
I campaigned a Tesla Sport last year with shocks set at 6 front 8 rear and stock tires pressures at 30 and 40. Later I set the fronts higher and had less understeer.
I won my class with a 4th (on snow tires!) a third, two seconds and a first, and finished about middle of the pack overall -- maybe 30th out of 70, mostly BMWs.
We compare with PAX numbers, and the Tesla is heavily penalized by having a Super Stock PAX.
What are the torque settings when tightening all of these adjustable suspension nuts and bolts?
Have you had a wheel alignment done?
I'm going to be taking my car to an autocross sized track next week, I've been there 4 or 5 times before, but next week will be the first time since getting my alignment done.
( It will also be my first time on R compound tires and with better brake pads, I'm hoping for a huge improvement in my lap times )
The old ( factory ) alignment had massive amounts of toe-in and not enough negative camber in the front.
I'm not an expert, but my new alignment makes the car feel much more ready to turn - but it also feels a little less stable on the highway, the bad pavement and ruts make it drift around a little more, requiring more tiny corrections.
It seems likely that all the drag caused by the toe-in was designed to keep the car going straight.
Good question, richkae.
Could someone post alignment specs, both OEM and 'track'?
For my S-2000, I learned that Honda UK took the car around the track until they dialed in the alignment - to reduce bump steer among other things - and those alignment specs were published online. After a year or so with the default Honda US default alignment, I switched to the UK alignment and really enjoyed the car even more.
Sorry for the long story, but I am hoping that we can get similar public sharing of knowledge here. With the adjustable sport suspension, there are obviously more figures to track than mere alignment. So far, we seem to be accumulating great information on the adjustable suspension, so I'm hoping we can add alignment specs as well.
My car before the wheel alignment was done ( as it came from the factory plus almost 2 years of driving wiggling things ):
Left Front:
Camber:-0.55 deg
Caster: 4.58 deg
Toe: -2.6mm
Right Front:
Camber: 0.09 deg
Caster: 3.78 deg
To: 6.1mm
Left Rear:
Camber: -2.03 deg
Toe: 3.9mm
Right Rear:
Camber: -1.61 deg
Toe: 6.1mm
New specs ( I told him I wanted to make it perform on the track and still be good on the street, and that I weigh 180 pounds - its a left hand drive car ):
Left Front:
Camber: -0.85 deg
Caster: 4.52 deg
Toe: 0.1mm
Right Front:
Camber: -0.85 deg
Caster: 4.36 deg
Toe: 0.2mm
Left Rear:
Camber: -2.19 deg
Toe: 1.9mm
Right Rear:
Camber: -2.19 deg
Toe: 2.1mm
I don't yet have feedback to give on how it performs when pushed hard, and since I changed two other variables ( tires and brake pads ) it will be difficult to isolate improvements.
Well, we took the adjustible suspension to the next level. I sent the shocks off to Bilstein for revalving. Blair just finished testing the new setup in the Winnemucca autocross (the other thread). So now the shocks are stiffer and slow the roll rate a little. We are still rinning the rear sway bar at full stiff and the front at full soft to balance the understeer. With modified shocks we are running the rear at setting 10 and the front at 6. Blair wants to try 8 on the front but my opinion is it will bring back some understeer.
If anyone is interested in the address of Bilstein in SoCal, let me know.
Sounds like a bigger bar on the rear would help, and possibly allow a better ballance of the front. Likely cheaper than custom bilstein's.
SP-2823 XP-12
Not within the SCCA rules for the SS class. Also the stock springs must be retained.Originally Posted by Lloyd
ah, yes, but would this be a better performance option for the 'street speedster' ?
SP-2823 XP-12
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