Jump to content
SAU Community

Recommended Posts

  • Replies 74
  • Created
  • Last Reply

Top Posters In This Topic

I was think of getting a R34 GTT but since I have seen you racing around the track in that GTR im going to buy a R33 GTR now

She looked sweet as and went like no tomorrow

Thanks for that.

Your right tho - it goes like the clappers and with fairly simple mods.

I was just trying out some new camber settings (which I'm still not sure of)

Just waiting for my new track wheels to arrive - should look the biz then.

Should be going out on Saturday for the sprints - so hopefully will see you guys out there again.

EVO Cam,

Those QR Sprint days are timed by hand. There is a guy in the tower who clicks a button when a car goes past. So if he is a bit slow or quick, presto you have a great lap time. He hands out timing sheets with 3 decimal places but its all smoke and mirrors.

Thats why the records above are only from my electronic timing system. It is internally accurate to 1/1000th of a second for each and every lap.

Paul

The loop does not detect your car when it goes past unless you have a transponder in your car. These are used for race events such as the V8 Super Cars and cost about $550 each.

What the guy in the timing room is doing is pressing a button to simulate the read of a transponder.

When he gives out a timing sheet with several decimal places on it he is decieving you. Let me explain, see 1:03.8 (1/10th sec), 1:03.83 (1/100th sec), 1:03.835 (1/1000th sec). There is no way that someone pressing a button is repeatably accurate to any of these. If he gave a time of 1:03.8 (+/-0.5sec) that would be more like it, but its still generous.

What you have to factor in is that he is pressing that button not only for one car over 5 laps, but for a whole grid of cars over several hours. So errors are made and sometimes in the order of seconds. For example, the Porsche club "wash" the data before making it official for their competition by deleting any entries that look suspect.

My timing system is based on a hard real time microcontroller that captures a time stamp with an infrared sensor across the track at the start finish line. The internal timer is accurate to 1/1000th sec. This accuracy remains for every time all day.

To get your time in the "Time Attack" record you have to come to one of our track days. The next one is August 30 and the one after that is November 30. Currently our days are only during the week, although I may be timing weekend events in the future.

I hope that answers your question. If anything is still unclear please post futher questions.

Paul

Paul,

As an indication of just how accurate the "push the button" method can be, I have recorded a 56.7 second run on the sprint circuit. Whilst I would love to claim the time (and probably will when bragging to mates) I would hold a number of track records if it were true

Our next track day is on Tuesday August 30.

The track is in Ipswich.

From the GC you would probably come up the highway and take the Logan motorway, then head out to Ipswich and take the Warwick exit. After about 10mins or so there is a bid sign on the right that says Queensland Raceway. Head down there to the end and you will find the track.

Otherwise you could meet up with someone heading out there on the day and just follow them there. We have guys coming from all over. I am pretty sure a few are coming up from the Coast.

Paul

  • 4 weeks later...

Hi Guys,

I Would Love to come to the track day, can you tell me how much its gonna cost me to enter, and what time it will start and finish..... and can un registered cars be allowed to run on the track ?

with a SAU membership can i allpy fora cams licence?

cheers

Hey Mate,

The track day costs $110. We arrive at 7:30am to setup and are on the track from 8:30 to 12:30. Maximum of 5 groups each with 9 cars. So you get lots of laps.

The next track day is on Aug 30. There are only a couple of spots left now so if you want to come PM me your email address ASAP and I'll get you all the details and onto the mailing list.

Also you do not require a CAMS licence as we run the AASA insurance.

The car does not need to be registered. It does need to be safe.

Hope to see you out there.

Paul

I'm going for at least 1:10.00 for the clubman track at the Aug 30 track day now that I've got a few minor suspension mods.

I'm hoping for 1:09 but I still got a really old crap set of 245 ziex falken tyres to run on.

Anyone else planning on beating their best time? If so what are you aiming for?

Its getting close. . . . . . can't wait.

Not sure what times I will be running, would be real happy with a low 1:03 or maybe sneak into a 1:02 on the clubman and a flat minute or under on the sprint. That would keep me smiling for weeks :huh:

Damm rain, I only missed my goal of 1:09:00 by 12 seconds or so :(

Never had a real intrest in getting a good time, just happy to drift - as those behind me may have noted as I spun out for the 4 time at the end of the main straight (thats my excuse anyway!).

Glad I did not take off the 2 week old front bar when I ended up in the kitty litter!

Had a great day though, thanks again Tim and paul.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • If you want to do a single throttle body conversion easily, you won't need to pull anything apart. Take the linkage from your throttle off the linkage controlling the ITBs. Now open the ITBs wide open, and lock the linkages in said position. Now add a single throttle body onto the front of your inlet plenum. No it's not ideal for the last nth of a kw, but it'll be a lot better than what you're already trying to do...   PS, ITBs can be so damn hard to tune from, because roughly 20% movement in a throttle body equates to a change in roughly 80% of its flow (Hence power). When you add up the flow limitations of those small throttle bodys, it is a LOT higher than that of a single large throttle. Hence, TPS is very very sensitive with them, and you do a LOT of work with sensor fusion, and some Maths behind the scenes to make those blends nice, and be smooth.
    • Yep, when Haltech purchased Adaptronic, and all of the Adaptronic staff, including Andy went with it, it took Haltech to the next level. Haltech wanted Adaptronic as they wanted things like Andy's fuel models, and some other IP, AND they wanted Andy too as he is brilliant! Andy has spoken about the incompatibilities between the old 1500 stuff vs Nexxus, and it totally makes sense. It's not JUST software that is different, there is huge changes in the underlying hardware too. It's why Haltech has had soooo many changes in the last couple of years, in terms of Hardware, and Software, and why it has become so damn Amazing. Why do you think guys like Rob Dahm with his quad rotor, went from running Adaptronic's to running Haltechs? Andy. Pretty much, Haltech these days, is Adaptronic, but with more funds behind it, and more staff, and hence Andy's visions, and visions of other people that he helps shape their great visions, into amazing new products. All the new Nexxus gear, whole new software for it, new and better dashboards, the apps that will run on headunits and NOT be slow to respond! I understand people being burnt in the past, but if you're ragging on a company, about products and issues from many years ago, it's more a reflection on yourself, not looking or keeping up with new stuff. In which case, those people should be going back to PowerFC and Nistunes as the ECU's to rave on about...
    • Right, but I thought the problem has been for a while now that even if you know manifold pressure + throttle position you still have non-linearity and aliasing issues vs actual engine load? One way I can see things simplifying is going DBW, then all air going into the engine is represented by the throttle position. As opposed to a random bimetallic strip vaguely linked to engine temperature opening and closing a shutter or some random power steering air valve suddenly allowing a bunch of bypass air. But the same throttle position/RPM at ~atmospheric MAP in different gears is not guaranteed to be same engine load? Honestly, ITBs are of such dubious value IMO. I don't know why these things are hyped up so much. The main benefit as far as I can tell is you reduce the likelihood of cross-cylinder EGR scavenging with significant cam overlap at idle. I would absolutely run speed density and be done with it if not for this fairly esoteric control problem.
    • Hah dont worry, my adult brain has this conversation every single day. Dont waste your money, invest more of it into shares, pay down the mortgage. Then the bedtime insta doom scrolling begins and after being bombarded with gtr's my mind is set: im definitely getting one! I have the current model mx5 as the weekender, but i just miss my boost and literally like your username, the sututu's that come with it. I remember with my 2nd supra, as it had twins and vvti, they used to spool real early, like 1,500rpm so you could just be a spooly boy all day long. Some people say they get over it after a while, not me tho. 
    • If you need to refinance your mortgage and reset the loan terms back to 30 years and cash out on your equity for "investment" purposes *cough* car parts, I can help 😊
×
×
  • Create New...