9000rpm. Is it for real?
05-08-2015, 06:20 PM
#1
9000rpm. Is it for real?
Don't you feel that the engine above around 8700-8800rpm dies pretty significantly? What's the point in setting the red line at 9000rpm?
For instance doing LC in Auto mode the transmission changes gears exactly at 8800rpm.
For instance doing LC in Auto mode the transmission changes gears exactly at 8800rpm.
05-08-2015, 06:58 PM
#3
Even when power decreases towards redline, you're still making more power at 9000 RPM than at the, say, 7500 RPM you'll be at after you shift.
If your peak power is at redline, then you would benefit acceleration-wise if the redline could be pushed higher even if power starts to trail off.
If your peak power is at redline, then you would benefit acceleration-wise if the redline could be pushed higher even if power starts to trail off.
05-08-2015, 10:00 PM
#4
Race Director
Even when power decreases towards redline, you're still making more power at 9000 RPM than at the, say, 7500 RPM you'll be at after you shift.
If your peak power is at redline, then you would benefit acceleration-wise if the redline could be pushed higher even if power starts to trail off.
If your peak power is at redline, then you would benefit acceleration-wise if the redline could be pushed higher even if power starts to trail off.
05-08-2015, 11:40 PM
#5
Racer
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thats a good point.
i think its more about the disappointment of not feeling the engine pulling all the way to red line the same way the noise does. would be that much more awesome if the power continued to climb all the way till 9000 rpm.
i remember the 1st - 2nd shift in my e60 m5. that car DID seem to pull all the way to red line. was freaky. and the gear change was pure savagery.
05-08-2015, 11:54 PM
#6
RL Community Team
Rennlist Member
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Personally, it's revving so fast I can't even notice it visually - much less from a butt dyno perspective.
I know what the engineering specs say and the charts show, but actually noticing a perceivable difference? Never.
Maybe I just need to pay more attention at my tach and stop looking at the road.
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05-09-2015, 12:13 AM
#8
Drifting
Peak power: 475 @ 8250rpm. The last 750 is for fun...
05-09-2015, 04:25 AM
#9
Rennlist Member
The last 750 is to keep you in the power band for the next shift. While it's all happening in ridiculous speed, that extra few hundred RPM sets you up for the big push in the next gear.
05-09-2015, 06:40 AM
#10
Rennlist Member
Reminds me of Spinal Tap... 11...
05-09-2015, 09:02 AM
#11
I do understand idea of revving beyond the peak power to get in the power band in the following gear. The point is that the car in Auto mode never revs to 9000rpm but only to 8800rpm. At least mine.
You still can notice that in the first gear. At second and third it is somehow quite noticeable. It looks to me that it makes no sense to rev to 9000rpm but to change the gear at 8800rpm like it does in Auto. Then the question is why the red line is set at 9000rpm?
9A1 is a fantastic engine. No question about it. To compare S65 (E9x M3) had a red line at 8400rpm and peak power at 8300rpm and was pulling nicely to the red line. It's not the case in 9A1 I am afraid. Makes no difference to me. The GT3 is still a space shuttle but somehow that little thing puzzles me :/
You still can notice that in the first gear. At second and third it is somehow quite noticeable. It looks to me that it makes no sense to rev to 9000rpm but to change the gear at 8800rpm like it does in Auto. Then the question is why the red line is set at 9000rpm?
9A1 is a fantastic engine. No question about it. To compare S65 (E9x M3) had a red line at 8400rpm and peak power at 8300rpm and was pulling nicely to the red line. It's not the case in 9A1 I am afraid. Makes no difference to me. The GT3 is still a space shuttle but somehow that little thing puzzles me :/
05-09-2015, 09:09 AM
#12
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I do understand idea of revving beyond the peak power to get in the power band in the following gear. The point is that the car in Auto mode never revs to 9000rpm but only to 8800rpm. At least mine.
You still can notice that in the first gear. At second and third it is somehow quite noticeable. It looks to me that it makes no sense to rev to 9000rpm but to change the gear at 8800rpm like it does in Auto. Then the question is why the red line is set at 9000rpm?
9A1 is a fantastic engine. No question about it. To compare S65 (E9x M3) had a red line at 8400rpm and peak power at 8300rpm and was pulling nicely to the red line. It's not the case in 9A1 I am afraid. Makes no difference to me. The GT3 is still a space shuttle but somehow that little thing puzzles me :/
You still can notice that in the first gear. At second and third it is somehow quite noticeable. It looks to me that it makes no sense to rev to 9000rpm but to change the gear at 8800rpm like it does in Auto. Then the question is why the red line is set at 9000rpm?
9A1 is a fantastic engine. No question about it. To compare S65 (E9x M3) had a red line at 8400rpm and peak power at 8300rpm and was pulling nicely to the red line. It's not the case in 9A1 I am afraid. Makes no difference to me. The GT3 is still a space shuttle but somehow that little thing puzzles me :/
1) actually shifting at 9,000 but stuff happening so fast the gauge can't keep up, and display the final 200 rpm?
2) actually shifting 200 rpm early as not to over-rev past 9,000?
*in prior model years, cars with Sport Chrono had a "harder" red line. Not sure how this was with GT cars
05-09-2015, 10:52 AM
#13
Are you saying that you can actually notice a drop in hp in between those 200 to 300 rpm?
Personally, it's revving so fast I can't even notice it visually - much less from a butt dyno perspective.
I know what the engineering specs say and the charts show, but actually noticing a perceivable difference? Never.
Maybe I just need to pay more attention at my tach and stop looking at the road.
Personally, it's revving so fast I can't even notice it visually - much less from a butt dyno perspective.
I know what the engineering specs say and the charts show, but actually noticing a perceivable difference? Never.
Maybe I just need to pay more attention at my tach and stop looking at the road.
05-09-2015, 11:05 AM
#14
I do understand idea of revving beyond the peak power to get in the power band in the following gear. The point is that the car in Auto mode never revs to 9000rpm but only to 8800rpm. At least mine.
You still can notice that in the first gear. At second and third it is somehow quite noticeable. It looks to me that it makes no sense to rev to 9000rpm but to change the gear at 8800rpm like it does in Auto. Then the question is why the red line is set at 9000rpm?
9A1 is a fantastic engine. No question about it. To compare S65 (E9x M3) had a red line at 8400rpm and peak power at 8300rpm and was pulling nicely to the red line. It's not the case in 9A1 I am afraid. Makes no difference to me. The GT3 is still a space shuttle but somehow that little thing puzzles me :/
You still can notice that in the first gear. At second and third it is somehow quite noticeable. It looks to me that it makes no sense to rev to 9000rpm but to change the gear at 8800rpm like it does in Auto. Then the question is why the red line is set at 9000rpm?
9A1 is a fantastic engine. No question about it. To compare S65 (E9x M3) had a red line at 8400rpm and peak power at 8300rpm and was pulling nicely to the red line. It's not the case in 9A1 I am afraid. Makes no difference to me. The GT3 is still a space shuttle but somehow that little thing puzzles me :/
05-09-2015, 11:35 AM
#15
Burning Brakes
It would be interesting to see a list of the actual drop in RPM values after upshifting from gears 1-6 at 8800 or 9000 RPM's (whichever value the PDK system uses as the on-track shift point). Given that the next gear should already be engaged and ready ahead of time and the two clutches overlap, there should be zero drop in engine speed due to shift lag, only due to the higher gearing of the next gear up.