Nice Donington gathering last night
- Thread starter Steve Brookes
- Start date
ORIGINAL: timarnold
Not a bad time then, Chris! []
BTW you went without the sucky thing!
Thanks Tim,
I am very trying ! [
]It was pure chance that Geoff took some pics for me, but from the times it's easy to see the speed building through the session --- by around four seconds from the second to around the eighth lap --- though some of the pics need time allowances making based on a guessed speed and distances down the straight !
P.S. I have a theory, if you are enjoying something there should always be something very important left undone !! A reason to return [
]
timarnold
New member
I think you should fit a datalogger, Chris, and then we can do overlays to see where you could find some more time. Obviously you're going reasonably quick now. I don't know what a really definitive time is around Donington GP for an RS, but a '58 can't be too bad.
I'm not sure how much faster Matt's car ought to be than an RS so it's impossible to compare that way. On one of the short sessions I did, the second one I think, the other maritime blue RS was behind me. The driver is competing in Time Attack so is probably pretty handy and was definitely trying. I was just getting warmed up and he was behind with his headlights on, so I started going a bit quicker and pulled away. I don't know what the spec of that car was though.
I'm not sure how much faster Matt's car ought to be than an RS so it's impossible to compare that way. On one of the short sessions I did, the second one I think, the other maritime blue RS was behind me. The driver is competing in Time Attack so is probably pretty handy and was definitely trying. I was just getting warmed up and he was behind with his headlights on, so I started going a bit quicker and pulled away. I don't know what the spec of that car was though.
That was Daniel --- he was running Michelin PS2's and was leaving me for dead at Coppice in the wet ---
I was catching him up and losing 150 yards at Coppice !
Later in the day his tyres were going off so I did overtake him --- maybe he let me []
He was driving a lightweight which had been modified to look like an N-GT will Matter roll cage, had about 305 bhp and fully rose jointed suspension. Didn't mention the torque ...
Daniel came out with me for the last two laps before the chequered flag to see how my car compared. He thought his (father's car) was a little stiffer.
I was catching him up and losing 150 yards at Coppice !
Later in the day his tyres were going off so I did overtake him --- maybe he let me [
]He was driving a lightweight which had been modified to look like an N-GT will Matter roll cage, had about 305 bhp and fully rose jointed suspension. Didn't mention the torque ...
Daniel came out with me for the last two laps before the chequered flag to see how my car compared. He thought his (father's car) was a little stiffer.
timarnold
New member
Ah,yes, I forgot his name! I was speaking to Daniel and his father both at the beginning and the end of the evening. They took my card at the end for some possible instruction at OP.
The track was very 'green' when it had dried after the earlier torrential downpour, and grip levels were quite low, so I don't know which tyres would have been better. After my runs the R888's on Matt's car were nowhere near as hot as I've had them before.
I don't think the power would make a huge difference, obviously it makes a difference, but not a huge one. I think it's the torque that makes the biggest difference with Matt's. But then it is slightly hindered by the turbo lag which makes it a bit of a handful because you're having to anticipate when the boost is going to come in; exiting Redgate for example, you squeeze the throttle and little happens, I had it to the floor with nothing, then suddenly the turbo's spool up and there's a rush of enormous grunt! So it hasn't got the throttle response of a N/A car, which means it can be more difficult to balance and control through the corners.
The only Porsche time I can find for the GP circuit is for an LMGT2 (category) 996GT2 in the LMS round there in '07, which was a 1.32. But that's not a great benchmark because an LMGT2 is a serious race car around 1000kgs with up to 600 bhp, with effectively a spaceframe chassis, full race suspension and brakes, huge slicks, sequential gearbox and substantial downforce.
The track was very 'green' when it had dried after the earlier torrential downpour, and grip levels were quite low, so I don't know which tyres would have been better. After my runs the R888's on Matt's car were nowhere near as hot as I've had them before.
I don't think the power would make a huge difference, obviously it makes a difference, but not a huge one. I think it's the torque that makes the biggest difference with Matt's. But then it is slightly hindered by the turbo lag which makes it a bit of a handful because you're having to anticipate when the boost is going to come in; exiting Redgate for example, you squeeze the throttle and little happens, I had it to the floor with nothing, then suddenly the turbo's spool up and there's a rush of enormous grunt! So it hasn't got the throttle response of a N/A car, which means it can be more difficult to balance and control through the corners.
The only Porsche time I can find for the GP circuit is for an LMGT2 (category) 996GT2 in the LMS round there in '07, which was a 1.32. But that's not a great benchmark because an LMGT2 is a serious race car around 1000kgs with up to 600 bhp, with effectively a spaceframe chassis, full race suspension and brakes, huge slicks, sequential gearbox and substantial downforce.
Steve Brookes
Moderator
Can't help you with the GP circuit but this year the fastest qualifying time for a 964 race car in the PCGB championship at Donington on the national circuit was just under 1' 22".
timarnold
New member
Moto GP (bike equivalent of F1 cars) have their British GP at Donington GP circuit, I think their lap record is 1.27.
Is that Marcus, Steve? That would be about right for the Club series. But the only 964 allowed is a C2 like yours and they're fairly standard, only suspension and brakes can be modded, and they run on Pilot Cups. I would think the RS CS of Chris's should be a little bit quicker. You can add about 30 seconds on the National circuit lap time for the GP circuit.
I would hope to be able to get Chris and Matt's cars under 1.20 on the National circuit.
ORIGINAL: ChrisW
Thank goodness I have no plans to take up racing [
Oh you would probably do all right, Chris!
Steve Brookes
Moderator
Yes the club race series, not Marcus he was just outside 1'22" and the leading 968s were a tad quicker:
http://www.tsl-timing.com/mgcc/2009/91453.pdf
BTW only pads and fluid can be different...they have to use standard size 964 calipers and discs and they have to use standard style suspension i.e. OE rubber bushes and they're not allowed coilovers. And they can't go below 1300Kg IIRC.
timarnold
New member
Yeah, 944/968 are much better balanced and handle better than 911's, so with similar P2WR they will be quicker.
I thought they could put mildly uprated shocks and springs on them too?
So... I know for a fact that a very quick time for a Radical SR3 around the National is 27 seconds quicker than a quick time for one over the GP circuit. Given that an SR3 would be at a calculated guess probably 5 seconds quicker than a 964 RS just over the Melbourne loop section, it would be reasonable to add at least 32 seconds to a 964 time (from the Club championship) for the National, so 1.22 + 32 is 1.54! Which is what I apparently did in Matt's car while being cautious because the track was green from the heavy rain and still damp in places.
So I reckon I am probably not far away in my estimate that it should be capable of a 1.49 in the right conditions.
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