Thread: S65 vs. S62
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      01-23-2013, 02:25 AM   #70
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Originally Posted by MKE_M3 View Post
Not totally correct, since power is in linear direct proportionality to torque, torque is very important, you just need to know rpm and gearing to get the entire picture.
You don't need to know anything about torque and gearing. Just power.

Originally Posted by MKE_M3 View Post
Correct, but generally peak power is fairly close to redline, which I assume Munit meant.
And I assume Munit meant what he typed. Maybe he'll illuminate us.

Originally Posted by MKE_M3 View Post
I think you are forgetting about the third component to acceleration, traction. Not too much an engine design can do here, but linear power delivery certainly helps. Something both engines have.
I also "forgot" about air resistance, rolling resistance, driveline friction and rotational inertia. My central point is that power and weight govern acceleration at any given speed, while torque and gearing needn't be considered. You can also predict acceleration by doing the torque-at-the-drive-wheels calculations, but why bother?


PS - What in God's name is linear power delivery, and how does it help with traction.