Quote:
Originally Posted by carchrism5
That math isn't correct, when there is a drivetrain loss, the number at the wheels is the portion of that (say 85% in this case). By adding back 15% you are getting a skewed number, the proper way is to divide by 0.85 and find out what the number is at the crank.
example: 400bhp car with 15% drivetrain loss would put down 340 on the dyno (400*85%), if you had the 340 on the dyno and added back 15% you would get 391 which is different.
|
A lot of assumption there. What if the 400hp car makes 348 on the dyno...as many do on my dynojet. These are the numbers that I have found best work.