Formula...

[BigFella_73]

Question for all those dyno freaks out there - if a car is putting out 208kW at the flywheel, what is it's approximate power at the wheels?

Is this outcome determinant on if it's FWD, RWD or AWD?

Is there a common 'rule-of-thumb' for the way this formula is worked out?

:confused:

Cheers guys.

[Billzilla]

Depends on a lot of things, but a rough rule of thumb would be -
- RWD manual, approx 22% - 28%
- FWD manual, approx 18% - 22%
- 4WD manual, approx 30% - 35%

Only rough figures there, but it's a guide!

For example I might put my car on one dyno and get 84kW at the wheels (like I did two days ago) and then an hour later stick it on another one and get 100kW. Different dyno's different results, but the engine power hasn't changed. FWIW, I'm very sure that I've got up around 142kW at the flywheel.

[BigFella_73]

Ok thanks Bill. I have a RAV4 that will be putting out in excess of 200kW (I'm presuming at the flywheel), and obviously this would have to be done on a 4WD dyno. :p

PS: (: .daehkcid ton ,daedkcid syas erutangis ruoy ,sdrawkcab daer nac ohw esoht roF

Cheers.

[Billzilla]

!ksnaht ,yawa thgir ti xif ll'I !hoD