Twilight racing at Sydney Motorsport Park

Discuss F1, V8s, etc., as well as competing in your Liberty.

Twilight racing at Sydney Motorsport Park

Postby macattaq » Mon Jan 27, 2014 2:30 pm

Just booked a date for this self-drive session in the Liberty GT. Any suggested air pressures for stock standard tyres?
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Re: Twilight racing at Sydney Motorsport Park

Postby senator » Mon Jan 27, 2014 5:43 pm

What wheel/tyres size and what tyres are you running??

Any idea which track you're on?
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Re: Twilight racing at Sydney Motorsport Park

Postby satogixxer » Mon Jan 27, 2014 5:51 pm

How/where do you book this (link me?) I'm interested.

Generally if you're running road tyres, set your hot pressure around what you would set your cold pressures normally. i.e. I usually use around 35-37 psi hot on my Michelin Pilot Super Sports.
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Re: Twilight racing at Sydney Motorsport Park

Postby senator » Mon Jan 27, 2014 6:09 pm

Michael, ARDC have a few member tracks days every month.
Full access to the pits, a number of instructors, no timing is downers...but there ways around that :mrgreen:
They use all the track layout too.
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Re: Twilight racing at Sydney Motorsport Park

Postby satogixxer » Mon Jan 27, 2014 6:26 pm

senator wrote:Michael, ARDC have a few member tracks days every month.
Full access to the pits, a number of instructors, no timing is downers...but there ways around that :mrgreen:
They use all the track layout too.

Yes I know, friend of mine flags for the ARDC. I'm already booked for the GP Circuit on the 29/5. :D

But didn't know they did twilight events?
[Liberty GT MY10 6MT]: STI bits | STI Brembo's + Dixcel | DAMD D-shape | Cusco coilovers & sways | Xtreme clutch | BLITZ pod | Plazmaman FMIC | Deshele built EJ25 | Emtron ECU | BorgWarner EFR 7670 | 374kw atw
[Outback 3R MY04]: Stock as a rock
Profile video here
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Re: Twilight racing at Sydney Motorsport Park

Postby BUDDAH » Mon Jan 27, 2014 7:04 pm

You should be aiming for the 6psi rule from cold when you come off the track hopefully you pressure has only risen by 6psi Running too low pressure, the tyre will overheat and and pressure will rise too high . I ran the 3RB cold at 32psi and 2 laps of Wakefield the pressure would rise to 38 and 40 on a hot day so my ideal was around 39 psi. Keep note of your lap times and the tyre pressure . You will notice as your lap time stable out your trye pressure will remain constant .
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Re: Twilight racing at Sydney Motorsport Park

Postby senator » Tue Jan 28, 2014 7:26 am

satogixxer wrote:
But didn't know they did twilight events?


Twilight sessions are only during summer, they are also known as practice session, usually advertised only by email at short notice.

Session start at 4pm until 8pm i think.

Heading out for a track day in April, finger crossed can get a few more in this year.
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Re: Twilight racing at Sydney Motorsport Park

Postby macattaq » Mon Mar 17, 2014 3:58 pm

Thanks for your replies. I had a great time and it was exactly what I expected. Only had 2 sessions of 20minutes. One session was a dry track. The other was wet, so that got a bit hairy. They cancelled the 3rd session due to oil on the track.
On the GP circuit, I was doing about 2min 10secs laps. (stop laughing!)...
I couldn't get up to my top speed down the straight - only 160kph.
Downsides:
The shudder and rattle in the steering under heavy braking was unsettling.
Having to be mindful of the cars in the rear vision mirror.
Using the daily drive as the car supports some conservatism.
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Re: Twilight racing at Sydney Motorsport Park

Postby satogixxer » Mon Jun 02, 2014 7:04 pm

So I had my afternoon track day at SMP GP Circuit on Thursday - was fun! :D

I did a few 2:01 laps which seemed about the best I could manage.
Top speed 204kph (actual).

I thought I would get some sub 2min laps as that was what I used to do on my motorbike consistently IIRC, but I guess not in the car. There was a bit of traffic at times so hard to get in a clear lap, plus I need to work on my lines/apexes which could be better. :?

I would have liked to have had FFS (flat foot shifting) for this day, but unfortunately I guess it is not production ready yet for the Gen V, as I'm still waiting for Matt/KiDo to get back to me (and no response from him to my e-mails or PMs - hey at least a "sorry it's not ready yet" would have been nice rather than a complete lack of response).

Anyway I took some video with telemetry for anyone interested. :wink:


[Liberty GT MY10 6MT]: STI bits | STI Brembo's + Dixcel | DAMD D-shape | Cusco coilovers & sways | Xtreme clutch | BLITZ pod | Plazmaman FMIC | Deshele built EJ25 | Emtron ECU | BorgWarner EFR 7670 | 374kw atw
[Outback 3R MY04]: Stock as a rock
Profile video here
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Re: Twilight racing at Sydney Motorsport Park

Postby dr20t » Mon Jun 02, 2014 10:28 pm

Nice work Mick
Addicted to corn juice....

My FrankenStien build thread here: viewtopic.php?t=14137
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Re: Twilight racing at Sydney Motorsport Park

Postby macattaq » Thu Jun 05, 2014 8:54 am

Great videos Mick. I really enjoyed watching someone else in a faster GT getting down to the 2 minute laptimes.
My videos are crap compared to yours, so I won't post them. Anyway, who wants to see someone going slower?!
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