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View Poll Results: How often do you hit the rev limiter
Everyday 5+ occurances 1 1.27%
Everyday 9 11.39%
Sometimes 16 20.25%
Rarely 29 36.71%
Never, its a Porsche why would I hurt it like that 24 30.38%
Voters: 79. You may not vote on this poll

 
 
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Old 09-25-2014, 03:39 PM   #20
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Join Date: Jul 2013
Location: Maryland
Posts: 189
Quote:
Originally Posted by The Radium King View Post
dr. science says ...

torque at wheels = flywheel torque * gear ratio
using the torque curve for a 987 that I found online, torque peaks at 4500 rpm (360 NM) stays flat to 5500 rpm, then drops to redline at 7000 rpm (280 NM).

here is a chart that shows gear, ratio (taken from california motorsports website for a 986S 6-speed transmission) wheel torque at max rpm, and wheel torque at max torque:

1 3.818 1069 1274
2 2.200 616 792
3 1.516 424 546
4 1.216 340 438
5 1.024 287 369
6 0.841 235 303

so, if you compare wheel torque at max rpm to wheel torque at max torque in the next higher gear (ie, an upshift at 7000 vs an upshift at 5500 with rpm drop to 4500 to 'stay in the power band') you'll see that this produces less power in 1st and 2nd gear than staying to redline. the upshifts from 3rd, 4th and 5th are a wash and most likely eclipsed by the loss in power to the ground during this shifting process.

dr. science says hit the rev limiter.
Dr science doesnt say HIT the rev limiter. That would cause a loss in power. Dr science says take it to red line. I think there is a big misunderstanding in this thread about what red line is and what a rev limiter is. Will run side by side. Ill hit red line, you hit your rev limiter, will see who walks away.
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