Notices
997 GT2/GT3 Forum 2005-2012
Sponsored by:
Sponsored by: Porsche North Houston

991 GT3 PDK & Centerlock Debate

Thread Tools
 
Search this Thread
 
Old 02-21-2013, 02:03 AM
  #31  
911rox
Rennlist Member
 
911rox's Avatar
 
Join Date: Jan 2008
Location: Regretfully not at a track... :(
Posts: 2,571
Received 24 Likes on 16 Posts
Default

Originally Posted by 911rox
All for PDK being an option!! Just not the only option!!... Plain and simple...

For me personally, the motivation for going to the track is to better my skills and work on closing the gap to my pro driving instructor's time... The day I'm within a whisker of his times is the day I stop tracking... There is no prize that warrants going back week after week and reeling off perfect laptimes for me. PDK will just close that gap despite a lack of talent as the art goes out the door and it comes down to taking the same lines and braking at the same points whilst car does the rest...
Please note: I didn't say a thing about CLs... I've said enough although I'm happy to go on record and say that I won't be buying another CL equipped car again no matter how technically advanced it may be as I consider this rewarding and encouraging incompetence... And my current car will go 5 lug as soon as its due...

Last edited by 911rox; 02-21-2013 at 03:07 AM.
Old 02-21-2013, 02:04 AM
  #32  
Mike in CA
Race Director
 
Mike in CA's Avatar
 
Join Date: Jun 2001
Location: North Bay Area, CA
Posts: 12,000
Received 141 Likes on 76 Posts
Default

Originally Posted by MM3.9GT3
Unless the rpm is below 1250, it will not downshift when in manual mode. For example, if you mat the throttle in 5th gear at 1000 rpm, it will down shift. But, if you mat the throttle in 3rd gear at 1500 rpm, it will not downshift.
Thanks!
Old 02-21-2013, 03:27 AM
  #33  
mooty
GT3 player par excellence
Lifetime Rennlist
Member
 
mooty's Avatar
 
Join Date: Apr 2002
Location: san francisco
Posts: 43,504
Received 5,793 Likes on 2,373 Posts
Default

Originally Posted by Mvez
It's a sad sad day when you know people will soon be driving a 991 GT3 around a track in full Automatic-mode, because using the paddle shifter will be too much work.
what are you talking about?
i dont even get in the car any more.
tell my 4 YO to turn on the PS9 and i drive virtually with my fingers, eyes closed.
Old 02-21-2013, 05:24 AM
  #34  
jenk12m
Banned
 
jenk12m's Avatar
 
Join Date: Dec 2006
Location: new york
Posts: 5,869
Likes: 0
Received 0 Likes on 0 Posts
Default

Pdk on forza is pretty good. That's enough pdk for me
Old 02-21-2013, 08:10 AM
  #35  
Bob Rouleau

Still plays with cars.
Lifetime Rennlist
Member
 
Bob Rouleau's Avatar
 
Join Date: Jul 2001
Location: Montreal
Posts: 15,078
Received 256 Likes on 119 Posts
Default

Re: Cup car centerlocks - due to some arcane DOT rules, the Cup Car system is not road legal <sigh>.
Old 02-21-2013, 08:21 AM
  #36  
911rox
Rennlist Member
 
911rox's Avatar
 
Join Date: Jan 2008
Location: Regretfully not at a track... :(
Posts: 2,571
Received 24 Likes on 16 Posts
Default

Correct Bob, they are not street legal as the secondary locking system, that is, the red pins can't be secured effectively to make them tamperproof...
Old 02-21-2013, 08:33 AM
  #37  
Veloce Raptor
Rennlist Member
 
Veloce Raptor's Avatar
 
Join Date: Aug 2006
Location: All Ate Up With Motor
Posts: 41,854
Received 1,680 Likes on 868 Posts
Default

Originally Posted by mdrums
If you are in the power band you can floor PDK and it will not downshift because it can't as it would be past redline. But if you floor it at say below 4k rpm's...floor it and hit the kick down button with the throttle pedal then yeah it will downshift very quickly and put you in the proper part of the power band. I'm not understanding why you would think this is bad?
Originally Posted by mdrums
I've found that if I keep the rpm's above 4k...maybe 4300...no problem PDK will stay in the gear I select. Why would you want to go full throttle at 2500 rpm Dave? Even at Sebring Turn 17 for example 4th gear at the bridge about 68ish mph I believe is around 4500-4800 or so if fine...go full throttle PDK will be cool.
Mike, this has not been my experience at Sebring. The PDK cars I have driven there (2 of them) have both done unwanted kickdowns at above 4,000 RPM's. So this is the basis for my comments.

In addition, the bigger picture: I want to select my gears, PERIOD. If I am a dope & want to floor it in 5th at 2,800 RPM, I should be able to do so. Supposedly a DRIVER'S car does not out think the DRIVER. if I want the car to pick it, I will just put it in D and go...which is fine.
Old 02-21-2013, 09:10 AM
  #38  
dawgdog
Instructor
 
dawgdog's Avatar
 
Join Date: Jul 2011
Posts: 143
Likes: 0
Received 4 Likes on 2 Posts
Default

I started this hobby late in life and chose a DCT for my e92 M3 because I thought I was too old to learn heel/toe etc. I tracked that car for 5 seasons and loved it. Perfect rev matched shifts every time. But I wanted the Porsche experience in this lifetime and no DCT/PKD option with the current RS. Considered a 991 for this reason, but in the end said what the hell and made the leap. I am now four (winter) months and three track events into the RS experience. I absolutely love this car, enjoy shifting, and it does give me a sense of satisfaction learning a new skill. But if PDK had been available in this car that is what I would have chosen. And knowing what I do now I would not have regretted it.
Old 02-21-2013, 09:41 AM
  #39  
Izzone
Nordschleife Master
 
Izzone's Avatar
 
Join Date: Dec 2008
Location: Florida
Posts: 7,342
Received 293 Likes on 148 Posts
Default

Originally Posted by tcsracing1
Im thinking the 991GT3 will share the same centerlock system as 991Cup.... One would like to think....

Worst case if it is still the 997 system it will be a nice mod to install the 991 Cup center locks and wheels...

As for PDK, if anybody thinks that it will be boring then they are just not driving fast enough
Guess what

Cup car axles, uprights and bearings have a time out just like a street car centerlock
Old 02-21-2013, 09:43 AM
  #40  
tcsracing1
Rennlist Member
 
tcsracing1's Avatar
 
Join Date: May 2008
Location: Somewhere in a galaxy far, far away....
Posts: 17,108
Likes: 0
Received 259 Likes on 173 Posts
Default

Originally Posted by jumper5836
Quite the opposite, maybe we need something to hold us back and keep our engagement.
We are already held back when dealing with high HP cars on the track.... the manual shift is also holding us back and keeping us over engaged....
Old 02-21-2013, 10:15 AM
  #41  
neanicu
Nordschleife Master
 
neanicu's Avatar
 
Join Date: Apr 2010
Location: Ny
Posts: 9,986
Received 375 Likes on 225 Posts
Default

As much as I understand and agree that the CLs are not working out and YES! they are not necessary and YES! most likely they were just a publicity stunt on the part of Porsche,whose engineers have been watching too much F1 where they change wheels in 30 sec, BUT I also understand to be fair,that you can't expect a street legal car,made primarily for STREET DRIVING to not need a lot more maintenance when driven intensely and aggressively on the track!
The CLs will probably last thousands of miles without problems when the car is driven on the street.
Just think in Pro racing how much maintenance they have to do on Cup cars that involve a whole lot more than CLs: engine rebuilds and such...
Old 02-21-2013, 10:56 AM
  #42  
scott40
Rennlist Member
 
scott40's Avatar
 
Join Date: Oct 2009
Location: OH
Posts: 1,926
Received 101 Likes on 51 Posts
Default

I've probably asked this before, but am too old to remember...what is different, if anything, between the CGT CL and the 997 CL?

Also, I suspect that CL used on the street will last forever without replacing. We are talking about CL that are tracked.
Old 02-21-2013, 11:45 AM
  #43  
FLA997
Drifting
 
FLA997's Avatar
 
Join Date: Dec 2005
Location: FT. LAUDERDALE, FL
Posts: 2,797
Received 11 Likes on 8 Posts
Default

Originally Posted by scott40
I've probably asked this before, but am too old to remember...what is different, if anything, between the CGT CL and the 997 CL?

Also, I suspect that CL used on the street will last forever without replacing. We are talking about CL that are tracked.
The CGT CL is very close (but not exactly the same according to p/n) to the 997 RSR CL, and the flange from the hub that mates to the wheel is completely conical. The 997 Street CL is not.
Attached Images    

Last edited by FLA997; 02-21-2013 at 02:38 PM.
Old 02-21-2013, 07:27 PM
  #44  
scott40
Rennlist Member
 
scott40's Avatar
 
Join Date: Oct 2009
Location: OH
Posts: 1,926
Received 101 Likes on 51 Posts
Default

^^ thanks for that info. I wonder why they would not have gone with the exact same system?
Old 02-21-2013, 07:41 PM
  #45  
MM3.9GT3
Rennlist Member
 
MM3.9GT3's Avatar
 
Join Date: Sep 2006
Location: Dallas
Posts: 1,117
Received 47 Likes on 23 Posts
Default

Originally Posted by Veloce Raptor
Mike, this has not been my experience at Sebring. The PDK cars I have driven there (2 of them) have both done unwanted kickdowns at above 4,000 RPM's. So this is the basis for my comments.

In addition, the bigger picture: I want to select my gears, PERIOD. If I am a dope & want to floor it in 5th at 2,800 RPM, I should be able to do so. Supposedly a DRIVER'S car does not out think the DRIVER. if I want the car to pick it, I will just put it in D and go...which is fine.
They can program the threshold rpm for unwanted kick-downs. The 458 F1 (DCT) is programmed at a very low 1250 rpm so that you don't "lug" the engine. If you are in manual mode, and above 1250 rpm, it will not kick-down to a lower gear. Given that the GT3 is Porsche's most track oriented street legal car, I hope they can program a very low threshold rpm.

In other words, you have hope.


Quick Reply: 991 GT3 PDK & Centerlock Debate



All times are GMT -3. The time now is 12:13 PM.