Tuesday, October 21, 2014

[Video] Best Lap at Winton 12-Oct-2014

Sorry, the white balance on my camera wasn't adjusted properly.

Monday, October 20, 2014

Exe Crew Track Day - Winton Motor Raceway

12th October 2014

Yet another Exe Crew track day rolls around and we make our way back to Winton to attack those times. This time the car doesn't have a broken wheel bearing anymore but it did have some bits of road kill (fox or kangaroo?) under the car courtesy of the Hume Freeway.

Unfortunately, a combination of factors conspired against my attempt for a faster lap time...

Session 1
I had a short session because I didn't check my tyre pressures before starting, leading to my ABS malfunctioning. I locked up the tyres a couple of times and end the session early, lesson learnt.
2:04.2530 1:46.6890 2:14.0940

Session 2
Getting back into the groove of driving at Winton.
1:58.4920 1:45.7440 1:42.6360 1:42.3630 1:52.3290

Session 3
The temperatures (both ambient and track) were rising by this point.
1:53.3980 1:42.2200 1:41.3670 1:42.5950 1:43.1260 1:42.1100

Session 4
At this stage, it was really quite hot and I pushed hard, but obviously not hard enough. I would get my best time of the day here.
2:00.1560 1:41.6860 1:40.9280 1:40.6320 1:41.0570

Session 5
I decided this would be my last session and confirmed that I was tired and it was too hot.
1:49.6670 1:43.7320 1:41.0670 1:43.3590 1:41.2550

Looking at the speed comparison to my personal best lap, I would say that my slowness this time was due to me not pushing as hard as before, especially before turn 10. I can't say how much the heat contributed to this, but I can say that I definitely need to remember how to drive at Winton.

Left: 1:39.33   Right: 1:40.63

I also managed to kill my two front tyres when I locked up the brakes in the first session. #notmaxvalue

I'll get you next time Winton!

Wednesday, October 1, 2014

[Video] Sandown BONUS VIDEO

Note: Track day rules were NO overtaking on corners

Friday, September 26, 2014

AROCA Sprints - Sandown

21st September 2014

Thank you to Ying for this photo.

It's been a very long time since I last drove at Sandown, more than 2 years in fact. I was keen to get back to Sandown as the Z has changed in terms of its setup, so I signed up again for an Alfa Romeo club track day. Compared to last time, the Z is running soft Hankook Z221's and has the 1.5 way LSD, so theoretically should be faster straight away (all other things being equal).

The results of the day are below.

Session 1
This was a practice session and untimed. RaceChrono reported that I did a string of 1:29.xx laps.

Session 2
Achieved a new personal best lap time of 1:27.69 although the lap itself was not optimal as I had to overtake a Skyline off the racing line before a corner. See the video in my previous post.
1:51.0322 1:29.7741 1:28.8864 1:32.4086 1:31.9004 1:31.1671 1:28.5430 1:27.6940 1:28.2113 1:31.6460

Session 3
Too much traffic and couldn't find a clean lap.
1:52.2643 1:30.5932 1:32.0691 1:28.7007 1:31.8187 1:28.9151 1:29.6133 1:30.4816 1:28.6240

Session 4
Due to another car coming off the back straight and crashing into the barriers, the sessions in the afternoon had to be run under yellow flags at the corner after the back straight (possibly because the safety barriers were damaged). Thus we all couldn't run at 100% pace through that corner, resulting in me being about 3 seconds off the usual pace.
1:59.9605 1:35.0703 1:32.2190 1:33.0796 1:32.1231 1:34.0424 1:30.3375 1:30.6891 1:30.1433 1:33.2398

Even though there was at least one more session in the afternoon, I decided to call it a day and conserve tyres for Winton next month.

Looking at the comparison of speeds between my previous PB lap and the new one, we see that:

  • The new setup helped to find speed through turns 4 and 6.
  • The speed into turn 9 was affected by having to overtake the Skyline off line.
  • I need to shift gears faster going up the back straight.

RaceChrono reports that I have a theoretical best lap of 1:26.6 so there is more potential in the car's current setup if I can get cleaner laps.

Left: 1:27.87 Right: 1:27.69