June 25, 2011 Enduro win for Team 949 Racing - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 07-03-2011, 03:21 PM   #21
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I see what you're saying, but at the same time, it is another system on the car that may fail and may also require a pitstop to fix. And if you are flat spotting tires in an enduro, revaluate your driving habits, you can't run 10/10s and expect it to last 3+ hours.

/thread derail
Tell you what, wake up at 3am with only about 4hrs sleep in the last 18, hop in a race car and go run an hour and a half of steady laps within 4 seconds of qualifying lap time, never drop a tire off the track, never touch another car and never puff a tire when someone in a Porsche GT3 or Radical chops you off entering a turn.

When you have done that, let me know if you think ABS is not a good choice for an endurance car.

Anyway, if the ABS system "fails", we simply don't have ABS. We don't lose brakes or anything. Our system can actually be turned be turned on and off by the driver.

The other reality is that in 3hr events, we often have to run at almost full sprint pace, 1-2 sec off qualifying until it runs out of gas. Depends on who shows up, the track and a bunch of other factors. These races are not a cakewalk. This last event, we hammered as hard as we could or about 2:45 of the 3 hrs, hoping to get our nearest competitor to use up their tires and fuel. It worked and we were able to immediately shut down and go into cruise mode for the last 15 minutes or so.
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Old 07-03-2011, 04:00 PM   #22
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Points taken. I was probably skeptical because I have only felt ABS on a truck (other boring street cars etc.) before. It's annoying, and I don't like the way it feels on my foot.
I think it would feel wierd on a racetrack, just standing on the brakes every turn, but it would make it easier I suppose.

As for on-track exhaustion, the highlight of my Lemons racing career occured when I passed some guy on the backstraight chugging a bottle of water through my helmet. Needless to say, we were flyin'.
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Old 07-03-2011, 05:59 PM   #23
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if I had a choice, I would install GTR's self driving electronics. hopefully I don't even need to drive it. car will drive itself to a win !!

Last edited by bellwilliam; 07-04-2011 at 04:25 AM.
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Old 07-03-2011, 06:19 PM   #24
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I think it would feel wierd on a racetrack, just standing on the brakes every turn, but it would make it easier I suppose.
You don't, usually, engage the ABS in every brake zone. It is there as a safety net in case you lock a tire up.
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Old 07-04-2011, 04:16 AM   #25
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I think it would feel wierd on a racetrack, just standing on the brakes every turn, but it would make it easier I suppose.
You don't, usually, engage the ABS in every brake zone. It is there as a safety net in case you lock a tire up.
Another way to put it is that your best braking effort can be a bit better without ABS (especially standard ones running outside of their tuning) but your worst braking will be so much better with ABS.
I happily take a 5% weight penalty for using ABS in my series (5th year now and I'm still happy), but then we have about 20% of the races in damp/wet conditions.
Adding an adjustable prop valve to the 99 ABS system have made it quite good (more pressure to the rear needed), only activating when I need help.

But you can still get flat-spots if you are stupid, the ABS is not calibrated for steel pads...

And you squeeze the brakes as you normally do even if there is an ABS in there to save you, stabbing the brakes is not a way to go fast.
There is the same friction and the balance of the car at corner entry is equally important, ABS or not.

On Topic: Congrats on the Win, nice to see the knowledge about non-SM is accumulating
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Old 07-12-2011, 01:02 AM   #26
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Emilio can you comment on the RP2's? How close were you to the top finishing PT car?
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Old 07-12-2011, 01:23 AM   #27
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Emilio can you comment on the RP2's? How close were you to the top finishing PT car?
RP2 feels a bit like XP12 with a bit less modulation. Faster rotor wear but significantly longer pad life.

I think we were less than 30 seconds behind the factory backed turbocharged Scion TC of DG racing. Easily quicker and enough time to catch them in the laps remaining. William telling me on the radio to chase them down. I opted to stay conservative and continue running in max fuel conservation mode. After the race we looked at the fuel we had and it would have been really close if we had chased them down. Next race!
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Old 07-12-2011, 01:44 AM   #28
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Any pics of the lights on at night? I need to find a solution for my '91's lackluster (and soon to be nonexistent) headlights.
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Old 07-12-2011, 12:37 PM   #29
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Scion was an E1 car, there is also another faster class, E0. they were much faster. mostly E36 with big wing. we were couple of laps down from E0 cars.
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Old 07-12-2011, 01:01 PM   #30
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Points taken. I was probably skeptical because I have only felt ABS on a truck (other boring street cars etc.) before. It's annoying, and I don't like the way it feels on my foot.
I think it would feel wierd on a racetrack, just standing on the brakes every turn, but it would make it easier I suppose.
Even with ABS best braking G's is just before ABS kicks in. This is true for both my 00 miata and my E36 M3. In the miata I verified this with a G-meter. So you don't use the ABS by default. It's just to prevent lockup if you hit a bumpy or slippery patch, or you lock it up by mistake. So on a race car, most of the time it's like it isn't even there.
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Old 07-12-2011, 01:02 PM   #31
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Oh and Congrats to Emilio and the 949 team!
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Old 07-12-2011, 01:02 PM   #32
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Very impressive guys. Emillo, you need a rolex ride.

Edit: William you go fast too
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