a lap around Sebring in the GT3rs *vid*
#31
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Originally Posted by PatK-Mpls
Leh-
I am a bit confused by your saying that sequential shifting helps slow the car. When I have driven them, there always seems to be enough brakes to slow the car as much as needed. (I am not disputing what you are saying - I am really only trying to understand why you sequentially shift) Is there any other reason, or has someone told you to do it that way? I have, for some time, been trying to understand which method is best. (incidentally, most pros I have observed in GT3 R, RS, Cups do shift exactly as you do)
thanks
I am a bit confused by your saying that sequential shifting helps slow the car. When I have driven them, there always seems to be enough brakes to slow the car as much as needed. (I am not disputing what you are saying - I am really only trying to understand why you sequentially shift) Is there any other reason, or has someone told you to do it that way? I have, for some time, been trying to understand which method is best. (incidentally, most pros I have observed in GT3 R, RS, Cups do shift exactly as you do)
thanks
Originally Posted by kingleh
also u will always be in the right gear at the right time no matter what.
In the cup car seems like the brake bias was more to the front so if u really needed it u could use the motor to slow down the car. Like when ur dive bombing someone. I dont use it to slo down the car eveytime i hit the brakes tho.
I think its just the way to do it. Makes the braking smoother. I dunno its just the way to do it. I used to skip gears when i first started. To me it jsut makes eveything go smoother when you sequential.
#32
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Originally Posted by jrgordonsenior
Leh,
Thanks for sharing, that''s one quick car not to mention your hands & feet...
Can I ask which camera you were using and how you mounted it? I thought it worked really well.
Thanks...
Thanks for sharing, that''s one quick car not to mention your hands & feet...
Can I ask which camera you were using and how you mounted it? I thought it worked really well.
Thanks...
Its the "RACECAM" with a sony mini DV used as a recorder.
#37
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Kingleh
Thanks for the video. A lot of talent and experience on this site. I'm still confused on the downshifting for these cars from your video and other 996 RSR or Cup car in car videos I have watched.
So... ignoring the braking process and concentrating on the gearbox you do the following?
1. lift off the accelerator
2. shift to neutral (Step #1 unloads the gears so you can pull it out of gear with just the shifter)
3. blip the accelerator
4. press clutch pedal in
5. shift to lower gear
6. let clutch out (engaged)
7. repeat for the next downshift with steps #2 thru #6
Can't rev up the gears with the engine unless the clutch is engaged (gear box in neutral) everyone agree?
With regards to engine braking, for these 996 racing models I don't think there is much engine braking to be obtained regardless of the process. Sequential downshifting would provide the least since you are clutching more.
Thanks for the video. A lot of talent and experience on this site. I'm still confused on the downshifting for these cars from your video and other 996 RSR or Cup car in car videos I have watched.
So... ignoring the braking process and concentrating on the gearbox you do the following?
1. lift off the accelerator
2. shift to neutral (Step #1 unloads the gears so you can pull it out of gear with just the shifter)
3. blip the accelerator
4. press clutch pedal in
5. shift to lower gear
6. let clutch out (engaged)
7. repeat for the next downshift with steps #2 thru #6
Can't rev up the gears with the engine unless the clutch is engaged (gear box in neutral) everyone agree?
With regards to engine braking, for these 996 racing models I don't think there is much engine braking to be obtained regardless of the process. Sequential downshifting would provide the least since you are clutching more.
#38
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full throttle
hard brake
and then in one fluid movement depress the clutch, blip the throttle while changing gears and braking, then engage the clutch.
repeat
its like a golf swing, if you try and think your way through it in steps you're going to screw it up
hard brake
and then in one fluid movement depress the clutch, blip the throttle while changing gears and braking, then engage the clutch.
repeat
its like a golf swing, if you try and think your way through it in steps you're going to screw it up
#39
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Leh: Jaw dropping awesome work! Thanks.
I too am really trying to understand your shifting, as it's so freakin' lightning fast that I want to learn this !!!
As 993-996 says, are you traditionally double clutch downshifting, or slipping it into gear closer to what Stuttgart says. Please describe exactly what you are doing ... and then how the hell we can learn it.
TIA
I too am really trying to understand your shifting, as it's so freakin' lightning fast that I want to learn this !!!
As 993-996 says, are you traditionally double clutch downshifting, or slipping it into gear closer to what Stuttgart says. Please describe exactly what you are doing ... and then how the hell we can learn it.
TIA
#40
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Stuttgart
I think you are trying to be helpful and I appreciate the golf swing analogy. However, as you describe it you are blipping the throttle with the clutch in (disengaged). That does nothing to rev up the transmission input shaft to match the revs of the output shaft.
ColorChange
With this video and some others for this model of car I see no evidence of double clutch downshifting only single clutch action and possibly "slipping" or "floating" engagement of the next lower gear.
I think you are trying to be helpful and I appreciate the golf swing analogy. However, as you describe it you are blipping the throttle with the clutch in (disengaged). That does nothing to rev up the transmission input shaft to match the revs of the output shaft.
ColorChange
With this video and some others for this model of car I see no evidence of double clutch downshifting only single clutch action and possibly "slipping" or "floating" engagement of the next lower gear.
#41
Nordschleife Master
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Originally Posted by 993_996_enthusiast
However, as you describe it you are blipping the throttle with the clutch in (disengaged). That does nothing to rev up the transmission input shaft to match the revs of the output shaft.
#42
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Thanks Stuttgart and Pesky 914 for your comments.
Here is the summary for downshifting a 996 GT3 Race Car.
1. Off the throttle
2. On the brakes hard
3. Threshold brake and do the following in one fluid movement
press clutch in, blip the throttle while changing gears, and let clutch out
4. Repeat Step #3 for every downshift desired
5. Off the brakes and Ease on the throttle (or use trail breaking technique)
This is a single clutch downshift where the transmission input shaft depends on the synchronizers to match the speed of the output shaft. The blip of the throttle gets the engine speed up to match that of the output shaft.
Here is the summary for downshifting a 996 GT3 Race Car.
1. Off the throttle
2. On the brakes hard
3. Threshold brake and do the following in one fluid movement
press clutch in, blip the throttle while changing gears, and let clutch out
4. Repeat Step #3 for every downshift desired
5. Off the brakes and Ease on the throttle (or use trail breaking technique)
This is a single clutch downshift where the transmission input shaft depends on the synchronizers to match the speed of the output shaft. The blip of the throttle gets the engine speed up to match that of the output shaft.
#43
Burning Brakes
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this may be too complicated, but is there room to left foot brake, then transfer your right foot onto the brake pedel, then continue to downshift as usual? just a thought
#44
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One point Y'all might want to consider;
The shifting is dazzling and all, but it is being done on a race transmission that gets serviced every 30-40 hours. Engine too. I'm not sure I would try it with a street car, or any car without a Cup/R/RS racer's budget!
The shifting is dazzling and all, but it is being done on a race transmission that gets serviced every 30-40 hours. Engine too. I'm not sure I would try it with a street car, or any car without a Cup/R/RS racer's budget!
![Stick Out Tongue](https://rennlist.com/forums/images/smilies/tongue.gif)
#45
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Originally Posted by RedlineMan
One point Y'all might want to consider;
The shifting is dazzling and all, but it is being done on a race transmission that gets serviced every 30-40 hours. Engine too. I'm not sure I would try it with a street car, or any car without a Cup/R/RS racer's budget!![Stick Out Tongue](https://rennlist.com/forums/images/smilies/tongue.gif)
The shifting is dazzling and all, but it is being done on a race transmission that gets serviced every 30-40 hours. Engine too. I'm not sure I would try it with a street car, or any car without a Cup/R/RS racer's budget!
![Stick Out Tongue](https://rennlist.com/forums/images/smilies/tongue.gif)