Torque vs. Horsepower
My '06 Beaver Patriot Thunder has a C-13 Cat rated at 525hp. The guy parked next to me last week had a similar size MH (looked like a Prevost but wasn't). It also had a Cat C-13 but it was rated at 47...
Forum Discussion
wny_pat wrote:
And it really gets complicated when one manufacturer measurers torque/horsepower at the flywheel and another measures it at the wheels.
Not aware of any engine manufacturer who measures at the wheels. Not even sure how that could be done. With the same engine, the chassis builder makes many decisions that affect HP at the rear wheels:
Alternator size/output-- the larger the output, the more HP it takes.
Dash A/C compressor size-- same issue.
Rear mounted fan (solid) vs clutched fan vs hydraulic pump for side radiator.
Air compressor for air brakes and/or suspension vs no air pump.
Bottom line, WAY too many chassis builder options for an engine manufacturer to rate "at wheel HP" even if they wanted to.
