No lift shift in MT 991.2 GT3
03-13-2018, 10:56 AM
#46
Eilig
"Yeah no kidding. Basically you're just pulling a stick instead of flipping a paddle. The net is the same. If I'm going to have a stick, I'd prefer that it be a proper MANUAL, as the current "stick" in the new GT3 is really just a different mechanism of activating the PDK, with the rev matching and no lifting, etc."
Manual = single clutch
Pdk = double clutch auto
"Yeah no kidding. Basically you're just pulling a stick instead of flipping a paddle. The net is the same. If I'm going to have a stick, I'd prefer that it be a proper MANUAL, as the current "stick" in the new GT3 is really just a different mechanism of activating the PDK, with the rev matching and no lifting, etc."
Manual = single clutch
Pdk = double clutch auto
03-13-2018, 11:07 AM
#47
Three Wheelin'
Wait, none of you have ever done this in a manual before?? I used to do this all the time, when I was a kid, in my fox body Mustang. Now it didn't have a computer holding the revs but you just had to be quick or hit the rev limiter.. and I'm sure without a computer behind it was pretty harsh on the car but those mustangs could take the abuse.
03-13-2018, 11:15 AM
#48
I did a lot of drag racing (slow, sport compact stuff) in my 20's so I like to think I can bang out an up-shift as well as most. I've learned to lay off a little on the track after having instructors tell me I should be nicer to my car. I mean... there's so little lost in being a bit more gentle. It was just habit.
Thing is... I don't really want to match revs on an upshift. I don't keep the pedal flat. That would be dumb as you're just gonna hit the rev limiter. But I sure as hell don't let off completely. It's more of a slight lift to keep the revs high but not too high and then you transfer that flywheel energy to the wheels when you drop the clutch.
So what's this flat-shift thing doing? Is it rev-matching? Is it holding the revs slightly higher? Is it just keeping you from hitting the redline without cutting fuel, essentially managing the throttle for you? What exactly is happening here?
03-13-2018, 11:28 AM
#50
Race Director
Wait, none of you have ever done this in a manual before?? I used to do this all the time, when I was a kid, in my fox body Mustang. Now it didn't have a computer holding the revs but you just had to be quick or hit the rev limiter.. and I'm sure without a computer behind it was pretty harsh on the car but those mustangs could take the abuse.
Powershifting was the method everyone learned. It isn’t that hard, but even if you execute it perfectly, it’s no PDK.
03-13-2018, 01:29 PM
#51
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C.J. is correct about the risk of a "money shift." Everyone saying otherwise is missing the point or doesn't understand the machinery. All the electronics in the world can't prevent the engine from being over revved if an inappropriate ratio is chosen. This is not specific to flat shifting but since you're very deliberately shifting the vehicle differently a mistake will be easier to make.
Be careful or Porsche might just need to add a range 7...
Be careful or Porsche might just need to add a range 7...
03-13-2018, 02:13 PM
#52
C.J. is correct about the risk of a "money shift." Everyone saying otherwise is missing the point or doesn't understand the machinery. All the electronics in the world can't prevent the engine from being over revved if an inappropriate ratio is chosen. This is not specific to flat shifting but since you're very deliberately shifting the vehicle differently a mistake will be easier to make.
Be careful or Porsche might just need to add a range 7...
Be careful or Porsche might just need to add a range 7...
Obviously you'd get no such help on an up-shift.
03-13-2018, 02:36 PM
#53
Nordschleife Master
Originally Posted by Wild Weasel
This isn't the case at all. The gear stick is still physically changing the gears through the cables or whatever. The paddles are switches telling the transmission to change the gears itself.
You know you can turn off all this rev matching witchcraft right? Just like you can turn off the traction control if you decide you don't want it. Having it there doesn't mean you need to use it.
You know you can turn off all this rev matching witchcraft right? Just like you can turn off the traction control if you decide you don't want it. Having it there doesn't mean you need to use it.
03-13-2018, 03:19 PM
#54
Three Wheelin'
Eilig
"Yeah no kidding. Basically you're just pulling a stick instead of flipping a paddle. The net is the same. If I'm going to have a stick, I'd prefer that it be a proper MANUAL, as the current "stick" in the new GT3 is really just a different mechanism of activating the PDK, with the rev matching and no lifting, etc."
Manual = single clutch
Pdk = double clutch auto
"Yeah no kidding. Basically you're just pulling a stick instead of flipping a paddle. The net is the same. If I'm going to have a stick, I'd prefer that it be a proper MANUAL, as the current "stick" in the new GT3 is really just a different mechanism of activating the PDK, with the rev matching and no lifting, etc."
Manual = single clutch
Pdk = double clutch auto
03-14-2018, 09:12 AM
#55
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One of the reasons I really like the auto-rev-match on downshifts is that it helps prevent a money shift. If you grab the wrong gear or shift too early, it won't rev-match. That's a very obvious cue NOT to let the clutch out. When you re-select the gear at a more agreeable time, it will rev-match properly and away you go.
Obviously you'd get no such help on an up-shift.
Obviously you'd get no such help on an up-shift.
03-14-2018, 09:29 AM
#56
03-16-2018, 06:16 PM
#58
This works the same way in the R, tried it today.
I've also done it for years in some race cars, and most rental cars.
(Not in sport...never use the rev-match, as doing it yourself and getting it right is a big part of the fun )
I've also done it for years in some race cars, and most rental cars.
(Not in sport...never use the rev-match, as doing it yourself and getting it right is a big part of the fun )
03-16-2018, 07:25 PM
#59
Addict
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Did you have the sense that it would be faster on a track or just a gimmick?
