[Formulajones]

Originally Posted by Verdoro 68

Out of curiosity, how much power do accessories and belts eat up? I'd think those could compound on a chassis dyno in street trim and take up a few hp. Seems like many engine dynos run no accessories and an electric water pump.

Correct, and the difference would vary greatly on a per car basis.
For instance under drive pulleys and things of that nature will change the numbers. Every car is different, that's why you can't just put a percent on it and say it makes such and such at the flywheel based on chassis dyno numbers