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Old 06-18-2013, 05:49 PM   #60
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Join Date: Sep 2005
Chapter/Region: NWIC

Originally Posted by blehhh View Post

Top speed is power-related if you literally don't have enough power to travel at a faster rate due to the wind & rolling resistance. Gearing comes into play, but if properly geared, a vehicle can match the power available with the power required.
Note part about land speed cars. The motor is not the limiting factor between the two.

I'm literally saying that interia drivetrain loss, which influences the whp reading on a dyno, varies with the driving scenario, therefor the whp you see on a dyno is not always what you will experience on the street. Bringing it back around the sti vs wrx debate, it is conceivable that those different levels of drivetrain loss that make them have 'equal' whp may or may not be relevant in all scenarios.

Lighter wheels, flywheel, driveshaft, etc might all spin up a lot quicker than an STI's bulky drivetrain, resulting in more whp, but when that inertia is not a real factor, like when you're already doing 80mph and only asking for another 20mph, that whp gain / inertia advantage will no longer be relevant.
The sti experiences more drivetrain loss and is a couple hundred pounds heavier than the wrx.
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