Quote:
Originally Posted by justatroll
Sorry but our cars have ~12-13% drivetrain loss (MT).
Your peak wheel HP shows up as 174.6
174.6 * 1.13 = 197.3 HP
So your engine is outputting right about 200 hp
What am I missing?
(Hint: 'drag power' is way too high @ 41 hp).
41 hp of drivetrain loss on a engine hp of 216 is 19% loss
See what I mean about "tweaking dyno settings" to show power where it isnt?
And thats without being able to see any of the Rotating mass numbers.
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Ok, you're an engineer, so hopefully you can explain this to me. Why is drivetrain loss expressed as a percentage instead of a static number?
Say your car makes 200 bhp, and for ease of math it loses 20 hp (10%) through drivetrain loss. You do some mods to it and now it's making 300 bhp. You're still spinning the same gears at the same speed in the same fluid, so it should still only lose 20 hp, not 30 hp (10%), right? If expressing it as a percentage is correct, why would drivetrain loss go up just because power went up, when the workload to spin all the gears and whatnot hasn't changed?