Tarmac Rally

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cGr
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Re: Tarmac Rally

Post by cGr » Fri 11 Dec, 2015 7:28 pm

It's a speed zone, like a virtual chicane. The idea of a chicane is the same as in track, to slow the cars down. They introduced real chicanes a few years back, but they were more trouble than what they were worth - the cars hit them a lot, and with only 30seconds between cars the people manning them had very little time to (safely) fix them. Now we have GPS tracking in the cars which gives me a 200m countdown to the chicane (which itself is 200m long) in which we need to reduce the speed to 60kph before we can go again.

I'm a bit each way about them, people don't crash in a straight line, though people have crashed in the real chicanes, as well as in the virtual ones (where two cars have varying strategies of when to hit 60kph within the speed zone). But for the 80% of cases, they do their job which is to slow people down on a long straight before a corner.

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Re: Tarmac Rally

Post by dorift » Fri 11 Dec, 2015 9:26 pm

Great footage would watch again A+++
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Re: Tarmac Rally

Post by mick81 » Mon 14 Dec, 2015 8:03 am

Awesome vid cam thanks for posting. Looked like a lot more confidence towards the end - amazing how much full throttle - out of interest how much elevation is there as it seemed like a lot of full throttle but not the speed you would expect so I presume the incline was an interesting battle

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Re: Tarmac Rally

Post by SecaBoy » Mon 14 Dec, 2015 12:27 pm

cGr wrote:It's a speed zone, like a virtual chicane. The idea of a chicane is the same as in track, to slow the cars down. They introduced real chicanes a few years back, but they were more trouble than what they were worth - the cars hit them a lot, and with only 30seconds between cars the people manning them had very little time to (safely) fix them. Now we have GPS tracking in the cars which gives me a 200m countdown to the chicane (which itself is 200m long) in which we need to reduce the speed to 60kph before we can go again.

I'm a bit each way about them, people don't crash in a straight line, though people have crashed in the real chicanes, as well as in the virtual ones (where two cars have varying strategies of when to hit 60kph within the speed zone). But for the 80% of cases, they do their job which is to slow people down on a long straight before a corner.

ah ok. thats actually an interesting concept (for a noob).
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Re: Tarmac Rally

Post by cGr » Mon 14 Dec, 2015 8:35 pm

mick81 wrote:Awesome vid cam thanks for posting. Looked like a lot more confidence towards the end - amazing how much full throttle - out of interest how much elevation is there as it seemed like a lot of full throttle but not the speed you would expect so I presume the incline was an interesting battle
1000m vertical ascent, give or take. I was surprised at how short the gearing was, so maybe that was it.

Interestingly, this car achieved 260kph down the front straight at PI, and his dads 34 GTR got to 284kph. These cars really don't have the horsepower of other cars, it makes it all up around the corners and under brakes.

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Re: Tarmac Rally

Post by cGr » Wed 16 Mar, 2016 9:00 pm

My driver for Targa caught someone writing on the race car today...
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Re: Tarmac Rally

Post by Ted » Thu 17 Mar, 2016 3:55 pm

Looks like a cheater coffee too
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Re: Tarmac Rally

Post by cGr » Wed 20 Apr, 2016 9:23 pm

cGr wrote:Really looking forward to Targa Tas next year!
So this happened on the weekend...
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Against a fairly aggressive Dodge Viper we managed to hold on for 6 days and take out the win at the 25th Anniversary Targa Tasmania!

Ash asked for this on FB, so here is (hopefully) a quick read on how the week went. For those that don't/cant read, just jump to the video at the end.

Our goal was always to do our own thing. The Viper had this tremendously built up reputation as being the fastest road car in the US (beating McLaren P1 and Porsche 918's on race tracks) and holding records on 13 US tracks. Who can argue with 700 odd HP, 355 wide rear tyres and an 8.4l V10 under the bonnet... That said, its a very American car. Half the bolts in it are metric, half are imperial and (from what I've been told) working on it just isn't nice (no consistency in build quality between each side of the car). On top of all that, it has tyres designed for time attack - last a few laps, knock out a record and then replace them - hardly what you would argue as being competitive for a 500kilometre rally event.

We knew we had a good, solid and reliable car which was good on its tyres and had extremely good balance and grip. We gave up 50mm on the rear tyre, 30mm on the front and 200 odd hp. Weights during the event were almost identical (we ran heavy).

The first day was reasonably uneventful, cleaning the first stage (safely under base time = 0 time penalty), having the second stage downgraded (due to an unfortunate accident involving a friend of mine who was thankfully ok), and once again cleaning the third. The fourth stage was the only competitive stage for the day, and we came away 3 seconds down on the Viper in second place. This was the first real indication of the Viper's speed, and we were happy with the outcome. We knew it would be quicker than us, but it was only marginal - a good sign of things to come.

Day 2 went well for us, winning the first stage of the day and taking back the overall lead. It was each way until lunch time when we were tied for outright. We lost 8 seconds on the stage after lunch, but took back 10 seconds on the last stage of the day to take the overall lead into the evening by 2 seconds. Highlights of the day were taking a very fast corner on a blind crest at 250kph and topping out at 269kph down the other side.

Day 3 was more of the same, with an interesting development taking place. Despite the power of the Viper, its top speed was severely restricted by the 'Extreme' aero kit on it. It wasn't taking chunks of time out of us on flat out stages, rather finding pace on medium speed stages. We had our first trouble of the event picking up a stone chip on one of the 'fast' stages (a lazy 270kph indicated on the dash) which then started cracking across the windscreen. Whilst it had all but stopped by the end of the day, it did cause us more than a little concern.

Day 4 was the Viper's home ground, and whilst we took time out of it on the first few stages, he stormed home to finish the day almost 10 seconds clear of us. We started questioning our speed and wandered what we had left to take it to the other car (not much). Racing the GT3 is an interesting challenge in that it is a compliant and easy car to drive around town. It's ok at 5 or 6/10ths, but its only once you're wringing its neck at 9/10ths (and above!) that it (and us as its crew) settles into a rhythm where we can race all day. It's good at 10/10ths, but you have to concentrate to extract all its speed. At 7 or 8/10ths its a really dull car to drive. We washed the car that night in the local police station car park (a friend of my driver and one of crew was a constable in that town), put the car to bed and headed off for dinner. On the way to dinner we received a call from the police officer about a 'cup or so' of oil which had been left on the car park. We use a lot of product to clean the car at the end of the day (it gets covered in road grime where the tyres literally tear up the road), so we thought that was it. Nothing was left on the car park (we later found it had been cleaned) and went to check the car out. Oil was dripping out from the undertray and there was a pool underneath the car.

Our crew were knowledgeable and tenacious, they soon worked out that one of the tanks in the dry sump had taken one hit too many, and had broken part of the solder which sealed the two clamshells which make up the tank. To make matters worse, this tank was the lowest part of the car, and even had a mould in the undertray to accommodate it sitting lowest in the car. One option was to just leave the car running - the tank was under vacuum and didn't leak when the engine was running. Not content with risking a very expensive motor (don't ask, I didn't want to know so I didn't ask either), we fashioned an additional piece of protection on the undertray and chemi-welded the tank. It held for the rest of the event without issue. Phew...

Day 5 was eventful to say the least. We lost 11 seconds on the first stage through a combination of too low pressures to start with (sliding around) to compensate for the punishment we put on them through the stage which resulted in them overheating towards the end of the stage. We have a suspicion that there were some issues going on with their tyres - they had been holding up a little too well, and to not have taken any spares (we are all allowed 6 tyres) so far was a surprise. We took back 6 seconds on the next stage, and went in to the longest stage of the event with them literally (and physically) just in front of us. On the start line my driver commented on a bit of blue smoke out the right hand side lake pipe, and it was this comment which came a reality half way through the stage when we overtook them with smoke pouring out the exhaust and them not being able to keep pace with us in a straight line. The Viper would retire soon after.
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We backed off for the rest of the day, either taking stage wins or equally fast on a cleaned base time. Our tight scrap for first was now a 9 minute lead over second.

Concentration was challenged that night, the normal finish is after this day, but tomorrow we had a small loop to contend with.

The first corner of the first stage of the last day almost saw us literally throw it all away. A bigger than expected bump caused us to bottom out and have a tank slapper almost into a telegraph pole. We got through that stage, and was met in the next stage by a crashed car in the middle of the road blocking our way. We stopped, helped, and got a derived time for that stage. The next two stages were uneventful, we found a good rhythm in the car, I managed to find (and wave) to my visiting family in stage, and managed to avoid the plethora of cars which seemed to be falling off the road.

The penultimate stage started out well, but about half way through we hit a bump mid-corner which blew the tyre off the bead and meant a long and slow limp to the finish line. We bled a bit of time, but got through still in the lead, but then had to contend with some mis-communication with our crew which meant they were a LONG way away. They would arrive to us within late time, change the tyre in under a minute (got to love centre lock wheels) and have us arrive at the last stage ready to drive to the finish. Or so we thought. The flat tyre had upset our rhythm, so we were kind of driving about 8/10ths, but not really focussed on the job. This was highlighted by a big oversteer moment at 170kph when the car was unsettled through a fast corner which once again saw us almost throw it away. We got to the end of the stage, stopped, thanked our lucky stars and then drove into the finish.

What an event, what a car, what a driver. We knew we could do it, and whilst we questioned the reliability of the Viper, we didn't know we would push him to breaking point. The GT3 was exceptional, and apart from the bumps (which we knew we would have to respect, just maybe not enough on a couple) which caused some issues, had a remarkably troublefree event for what is a car driven off the showroom (complete with roll cage), given a wheel alignment, race seats and an Akraprovic exhaust, and raced.

The tyre
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Commitment!
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Youtube Link


More incar video coming soon...

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SecaBoy
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Re: Tarmac Rally

Post by SecaBoy » Thu 21 Apr, 2016 11:51 am

that video was so awesome to watch.

great write up as always! but am i the only one who clenched their butt cheeks when reading this:
"taking a very fast corner on a blind crest at 250kph and topping out at 269kph down the other side" :lol:

those guys in the viper must have been pissed!! by the sounds of it, you guys perform better under pressure and trying to catch someone than when you're cruising to a victory. :P
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Re: Tarmac Rally

Post by gtirboy » Thu 21 Apr, 2016 3:45 pm

Great Work mate
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Re: Tarmac Rally

Post by Ted » Thu 21 Apr, 2016 4:31 pm

Yay. Whatever happens in the future, your name is on the trophy. Well done.
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Re: Tarmac Rally

Post by mick81 » Thu 21 Apr, 2016 8:32 pm

Awesome effort - a lot of years coming but you've done it now :)

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Re: Tarmac Rally

Post by cGr » Thu 21 Apr, 2016 9:03 pm

Thanks everyone.

Ash - that corner in question was one of those things where you plan it out, literally step it out on foot, look at it again and again - and whilst you know you can do it... When you come out the other side it is such a rush.

Similar video to the earlier one, but with some incar thrown in. Watch from 2.30 to see the crest @ 250kph, and from 4min to see where we passed the Viper.
Youtube Link


Absolute top speed on another day.
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Re: Tarmac Rally

Post by SecaBoy » Fri 22 Apr, 2016 12:06 pm

i suppose it comes down to having faith in the physics/dynamics/mechanics/etc of the car and your drivers ability.
it doesnt seem that bad.............until you remember you're going 250kph! :o


i have to say that i did have a slight chuckle when you're going past the viper at 150-160kph on mountainous roads and he waves thanks to him. :lol:
i'd be like, DUDE KEEP YOUR HANDS ON THE WHEEL, I'LL WAVE! :lol:
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cGr
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Re: Tarmac Rally

Post by cGr » Fri 22 Apr, 2016 7:47 pm

Faith in the drivers ability is a huge thing - I feel safer in this car doing these sort of speeds than in some previous cars doing under 200kph, merely because I know that a) he listens, and b) he will drive to what he hears.

Watch launch #8 from 2min 30sec, these cars are pretty well sorted ;)

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Re: Tarmac Rally

Post by mick81 » Fri 22 Apr, 2016 8:16 pm

Awesome video - that is commitment - anything that looks committed as in car is scary in the car from what I know

Great videos - why were White's running front of you? Doesn't allow them to run last for convenience? Was nice of them to let you through reasonably cleanly

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Re: Tarmac Rally

Post by cGr » Fri 22 Apr, 2016 9:20 pm

The road order moves around during the day depending on who stops when and where for fuel, take helmets off, etc. TBH I was surprised at how courteous they were in letting us past on the road too. That said though, we could have had them penalised for blocking us, so it was in their own best interests not to look like poor losers on the road at least.

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Re: Tarmac Rally

Post by cGr » Fri 22 Apr, 2016 9:59 pm

Full stage in car:

Queenstown - Known as '99 bends', the road out of Queenstown is iconic on the west coast of Tasmania. This is the stage before the Viper expired.
Youtube Link


Cygnet - This is one of the stages on the last day, and this pace is probably 8.5 or 9/10ths. Me waving at 2.30 is to my family who had come down to watch.
Youtube Link


Mt Black - This was the second last stage on day 4, and this is 10/10ths (actually, probably a bit over). The video really doesn't give justice to how big and numerous the bumps were.
Youtube Link


And finally, the classic Sideling stage - This is the first proper day of competition, and whilst we won the stage, we hadn't settled properly into the car yet and probably had 10seconds up our sleeve.
Youtube Link

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Re: Tarmac Rally

Post by dorift » Sat 23 Apr, 2016 10:19 am

Awesome watch
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Re: Tarmac Rally

Post by cGr » Sat 23 Apr, 2016 10:59 pm

Forgot to mention that a guy brought down his McLaren P1 to act as the fast sweep 999 car. He used it as an opportunity to drive it legally on public roads, rather than doing cheeky dealer plates runs down to the coffee shop on a Sunday morning. Technically its not road legal in Australia.

Its super small, like less size inside than a Mazda 2.
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Carbon fibre body = carbon fibre wheel arches...!
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Also means carbon fibre boot!
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It is owned by an old guy who owns a few retirement villages and other properties/businesses. He was going to bring his Veyron but it was too expensive to do so. $26,000 for a set of tyres (and the wheels have to be sent back to France to be fitted) and service intervals are 2,000 kays (and either fly the car back to France, or fly the service crew out to you). :o

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