Quote:
Originally Posted by serialk11r
Nope peak acceleration does not happen near redline, maximum power does not mean maximum acceleration. Power is acceleration times speed. Acceleration is force over mass, and the force is the radius of your wheel times the torque coming out of the driveshaft.
If the car weighs just 100 pounds less, in a 2500 pound context, and then they make 1st gear shorter by 5%, we are changing acceleration by 10%, yet I doubt a human being can stare at the tach and tell you what is going on. A 10% difference is almost as big as the difference between the low speed and high speed cams on the S2000.
|
I don't understand where you are coming with this which is funny because I always like your write ups. In torqueless engines I feel no motivation, not even a hint or push so I know horsepower is not doing its job in the low to mid range. Example!
My aunt owns a 2004 Mercury Mountaineer V8 with 4500 lbs of curb weight and it comes with a measly 239 hp@5500 rpms but it comes with 282 lb ft@3000 rpms and I could feel the torque push me in my seat under 3k rpms. So you're telling me that under 3k rpms I was feeling a lot of horsepower? Under 3k rpms my aunt's truck was probably making 175 hp with 275 lb ft of torque. There is no way 175 hp offers a lot of motivation in a 4500 truck with 500 lbs of people in it.