Macca

Ah. Matt. I was wondering who had those Photos. There are quite a few of that action sequence. Ill PM you and maybe you could send them to me....:-)

John McM

Macca, when I was in a dealing room we had recorders on all telephones to solve disputes. It always struck me how certain people could be about something until evidence showed it to be incorrect.

I had a similar experience at Highlands with Peter and Doug in the short course. I ran off the bend and then had both of them overtake on the straight. In car it seemed like they were diving into the corner. Video showed something different. To them I wasn't yielding.

No harm done. I think we can all take away from your experience that racers are not wired to yield!

Macca

Good advice John. Will put that one down to experience.....

John McM

Everyone from the SITT.

If you have photos or footage that would be good in the videos I'm making, please see how you can get them to me. Dropbox sharing seems to work well.

kiwi 911

Hi Mark,

I have a 1,135 KG Carrera 3.0 with SSI's and can do 1.19's. 1.21's are a good start, but as a guide, I'd expect you down into the 1.17-18's once the car is fully sorted and you have the lines down pat.

floatingkiwi

CSMende - nice silver car buddy. We will have twins (sortof almost)!! mine is a 05 C2s with aerokit and all the sports goodies.

Macca

I think late 1.121's bloody good for first time out. I assume r comps?

I agree with Paul, once you get the set-up right and have had perhaps an other 1-200 laps around HD to nail all your lines you will definitely be capable of 1.17s in that car.

Great start tho!

Ridgeline911

Cool, getting to 17-18s would be awesome. seems a long way off!

Yes I have Toyo R888s on it, 225&205/50R15.
I was pleased with Progress over the day.
Session1 30s-26s
Session2 26.5-25.5
Session3 26-22.9
Session4 23s
Session5 22s
Session6 22.2-21.7
Needed to let some air out for session 6 started to overheat tires.
Slept like a baby Sat night was pretty tired. Who knew 63laps was so mentally taxing!

John McM

Impressive. I have needed multiple track days to get down to 1.20 flat in my 964. What are you using to time yourself? Some of us use AIM Solos which help to isolate where the time is being lost. For me it was turn 1 and the sweeper. Turn 1 still has me beat. However given one of our guys speared off there with no brakes I'm little inclined to push the last 1/2 second or so. Btw. Many of us use Hankook 214 and 221 to achieve the lowest times.

996tnz

Nice progression. Losing the passenger should win you another second or so too, but if that passenger is coaching you, you're probably better leaving them in for a while yet as your times are still reducing nicely.

I think your car has done more HD laps in one visit than mine in total across 7 or 8 (reducing from a best lap of 1:26 to a 1:18.5 on road compounds before the re-tune) If you're like me and most others, turn 1 and turn 10 (each end of the main straight) are where you'll likely find the most remaining time [postnote; just saw John posted the same observation while I was responding].

Driving hard does take it out of you. I am in awe of the guys and gals that drive long shifts in endurance events.

Macca

A full HD Playday is 6 sessions approx 10 laps a session = 60 laps correct? At least it was in March 2013 when I was there.

My views are like Walts in that you should keep a passenger for a little longer if they are helping with your lines. I very much doubt you will find another 1s a lap however if you let them go. Maybe 0.5s but there are too many variables until you are consistent.

As others have said T1+T10 are the keys to quick lap times at HD. Double Apex T10 is an option which shortens the track but can be tricky to set up correctly. T1 is about brakes, turn in and downshifts - big ***** can help here.

Z221s will be a bit quicker than R888.

So another couple of 60 lap full day sessions, a few more sessions with an instructor, some Z221s and youll be falling below 1.20 before you know it. Id imagine the real challenge will be the 2s between 1.17s and 1.19s....

996tnz

May depend if it's a Jonny Reid or a Walter sized passenger. Some discussion here. It also makes more difference the lighter the car:
http://www.trackhq.com/forums/f2/how...ap-times-4278/

Macca

Its always been an interesting subject (to me).

Id go further and say it also depends on the torque of the car.

Torque is power to shift weight to speed.

If you have a modded 996TT weighing 1520Kg then a 100KG penalty will be mostly negligible (0.2-0.3s) at HD. If you are driving a Fraser with a 1600 cc engine and you take a 100KG passenger you will probably see a 1.0-1.3s deficit at HD.

Me thinks the 3.2 Carrera probably sits somewhere in between.

The weight is one factor (and it lends for better balance and reduced punishment on the vehicle), but the torque the engine makes will overcome most obstacles.

Academic I know but having focussed a bit on my cars weight reduction over the last few years I come to the conclusion its not all about quantity but also quality (i.e. COG, PMI, axial balance etc). This issue as always is cost and practicality!

All above caveat Im no engineer!

Mark. You will find some time in getting your tyre temp management and pressures under control. Its a bit of science as Ive picked up from the others. If you stick with the same brand of tyre you get to understand its characteristic fairly quickly so you can then get the temps you need without much guessing...

996tnz

Yep, though weight still hurts the same when braking especially. Part of the text exchange with Jane, my soon-to-be Targa Tour co-driver went like this:


Jane: "I'm wondering if I can take a bag with spare clothes for the evening function...I'm used to racing with a support crew."

Me: "That's what the little back seats are for. Soft bag best. One seat each ;-)"

Jane: "Extra weight!!!"

Me: "500 HP... Just don't bring a suitcase"


Of course weight is better out and if I was competing, I'd be quite happy for her to cut her hair short and starve a few days to save weight. Not that she'd need to...

pcarplayer

anyone for a 964 turbo?

http://www.trademe.co.nz/Browse/List...x?id=715576614