Porsche GT track day
Discussion
Been toying with the idea of Donington on the 18th (still spaces last time I checked), but then for the same outlay I could have a Friday morning to Monday evening trip to Switzerland, with the Furka, Grimsel, Susten, and Gotthard right on my doorstep....and I just can't shake the lure of the Alps. Obviously a completely different proposition, far less convenient, and a shed load more miles to travel, but every time I get the itch to do a trackday, it somehow transforms into justification for a trip to the Alps!
What the hell?
What the hell?
hunter 66 said:
Yes Digga has it about right ..... go out do 2 laps at reasonable pace come in drop pressures to 30/31 then do a 4-5 lap session and drop again , then that is fine for the day on Michelin , Dunlops may need a further check .
Track App , is a bit more difficult as have never really got it to work properly ... but then I guess I spend too much time shooting the breeze with the guys .
Aero , went higher downforce at SS , and not really felt much difference but I see the Manthy set up is higher downforce so guess it must work if was a better driver .
Looked at the Cocker video at SS , and was only 1 kph down on the Hanger and 4-5 going into Copse , and exactly same limes and kerbs ridden but he was over 10 secs faster a lap ..... ohh well , time to do more with the understeer issue
That car was also on Cup2 R (albeit near end of life)Track App , is a bit more difficult as have never really got it to work properly ... but then I guess I spend too much time shooting the breeze with the guys .
Aero , went higher downforce at SS , and not really felt much difference but I see the Manthy set up is higher downforce so guess it must work if was a better driver .
Looked at the Cocker video at SS , and was only 1 kph down on the Hanger and 4-5 going into Copse , and exactly same limes and kerbs ridden but he was over 10 secs faster a lap ..... ohh well , time to do more with the understeer issue
Edited by hunter 66 on Friday 10th July 12:38
Digga said:
Good points.
I too had been watched other comparable laps for my own car (997 platform) and in places (like approach to Farm), I'm actually faster than cars that are lapping quicker than me. Lap times are elusive!
But I think you have it; it feels it's in the entry/apex understeer, where I could improve most.
.
Been saying it’s all corner entry for 25 years on PH, I even had a debate with hunter about it on here last year and he refused to agree :-( I too had been watched other comparable laps for my own car (997 platform) and in places (like approach to Farm), I'm actually faster than cars that are lapping quicker than me. Lap times are elusive!
But I think you have it; it feels it's in the entry/apex understeer, where I could improve most.
.
Too obsessed with straight line speed, which is ofcourse a bi products of your apex speeds ! And you apex speed is all about corner entry.
About time a pro posted some laps at Silverstone.
Yes I come more from a F3 background where exit speed .... hence speed onto the straight is more important as lack of power cannot make up for compromised exit speed . The mid corner understeer is the problem , so time to adjust the stock set up if interested in times which am not really as track days are more about the banter . But David , yes the steels finally cried enough so I think will put a new set on again tomorrow ...... again will use Porsche parts and not upgraded parts as not that interested in chasing times in my daily driver
hunter 66 said:
Yes I come more from a F3 background where exit speed .... hence speed onto the straight is more important as lack of power cannot make up for compromised exit speed . The mid corner understeer is the problem , so time to adjust the stock set up if interested in times which am not really as track days are more about the banter . But David , yes the steels finally cried enough so I think will put a new set on again tomorrow ...... again will use Porsche parts and not upgraded parts as not that interested in chasing times in my daily driver
I'm no expert by any means however when i had my RS WP on track in February i also experienced a surprising amount of mid corner understeer..Its also on stock settings which are obviously set up for safe understeer..I think all it needs is to move the rear ARBs one notch to stiffen them up without making the rear too loose.Pretty sure the latest RS doesn't need any hardware changes, well at least not for my modest abilities..
Taffy66 said:
hunter 66 said:
Yes I come more from a F3 background where exit speed .... hence speed onto the straight is more important as lack of power cannot make up for compromised exit speed . The mid corner understeer is the problem , so time to adjust the stock set up if interested in times which am not really as track days are more about the banter . But David , yes the steels finally cried enough so I think will put a new set on again tomorrow ...... again will use Porsche parts and not upgraded parts as not that interested in chasing times in my daily driver
I'm no expert by any means however when i had my RS WP on track in February i also experienced a surprising amount of mid corner understeer..Its also on stock settings which are obviously set up for safe understeer..I think all it needs is to move the rear ARBs one notch to stiffen them up without making the rear too loose.Pretty sure the latest RS doesn't need any hardware changes, well at least not for my modest abilities..
Edited by 993rsr on Saturday 11th July 14:27
hunter 66 said:
Yes I come more from a F3 background where exit speed .... hence speed onto the straight is more important as lack of power cannot make up for compromised exit speed .
Formula single seaters in lower spec are usually momentum cars though and those aren't driven in the same way as modern road cars.. The typical way to be quick in a powerful road car is usually to minimize the time you have to corner and apply lock but try to get on the power asap even if you sacrifice some apex speed. That's quite different from say a radical sr3 or f3 type car where as you say keeping up cornering speeds is everything.
Taffy66 said:
hunter 66 said:
Yes I come more from a F3 background where exit speed .... hence speed onto the straight is more important as lack of power cannot make up for compromised exit speed . The mid corner understeer is the problem , so time to adjust the stock set up if interested in times which am not really as track days are more about the banter . But David , yes the steels finally cried enough so I think will put a new set on again tomorrow ...... again will use Porsche parts and not upgraded parts as not that interested in chasing times in my daily driver
I'm no expert by any means however when i had my RS WP on track in February i also experienced a surprising amount of mid corner understeer..Its also on stock settings which are obviously set up for safe understeer..I think all it needs is to move the rear ARBs one notch to stiffen them up without making the rear too loose.Pretty sure the latest RS doesn't need any hardware changes, well at least not for my modest abilities..
You need to learn these cars with all aids off,the rear takes a fair bit of provoking to break away,but you need to be ready / practiced in it
Lot of learning to be had in these cars,the engine is something else, driving in auto for a short session teaches you the gearing and rev shift etc,its nuts shifting just over 9000 rpm in sport and then replicate it in manual!
Dont go putting any aftermarket crap on,they dont need it for a road car.
993rsr said:
Need to trail brake to keep the weight on the nose Taffy, will help get the car into the corner better and curb the understeer. Then stiffen the rear and soften the front sway bars will help, and of course some more camber.
+1 spot on Edited by 993rsr on Saturday 11th July 14:27
isaldiri said:
Digga said:
gbrown2014 said:
1. The car is on the michelins, what rough pressures are people starting the day on? i know this is weather related but would ideally like a baseline.
TIA
Generally, with Cup 2's check immediately after each of the first two or three sessions, as the tyres heat up, and let some air out to set the hot pressure at roughly the suggested cold pressures.TIA
hunter 66 said:
Looked at the Cocker video at SS , and was only 1 kph down on the Hanger and 4-5 going into Copse , and exactly same limes and kerbs ridden but he was over 10 secs faster a lap ..... ohh well , time to do more with the understeer issue
Cup2R. You need to pay to play at the very quick end of laptimes 
Hopefully will meet some of you at Donnington and Silverstone!
Xfe said:
For those who haven't checked recently, PCGB have reinstated their 15th August day at Goodwood. This was originally a KG+ day but has been converted to a full normal day. Looks like there are still spaces at the moment
thanks for flagging this mate. Weekend days very rare so booked when i saw you post!james.a.c.911 said:
Xfe said:
For those who haven't checked recently, PCGB have reinstated their 15th August day at Goodwood. This was originally a KG+ day but has been converted to a full normal day. Looks like there are still spaces at the moment
thanks for flagging this mate. Weekend days very rare so booked when i saw you post!Enjoy it though, Goodwood is one of my favourite circuits, one of the fastest in the UK.
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