All your doing is proving the total drag (rolling resistance, plus aero drag) to weight ratio.
The Audi will also have the drag for the transfer case, 2 differentials and the transmission... on top of the 4 wheel bearings. Putting a car in neutral only decouples input gear set from he output gearset or the equivalent, depending on type of tranny. If a manual, pushing in the clutch while from the transmission. Which is slightly less drag than just pushing in the clutch on a manual, since when in neutral, the engine will neutralize drag on 1/2 of the transmission. With clutch in, the wheel have to overcome all of the drag.
The brake rotors also drag a small amount.
... please remove all 4 half shafts and try again. Or alternately, you can drop in out of a airplane nose first and measure terminal velocity. that eliminates rolling resistance and drivetrain losses.
TrainingBible Coaching
http://www.trainingbible.com
The Audi will also have the drag for the transfer case, 2 differentials and the transmission... on top of the 4 wheel bearings. Putting a car in neutral only decouples input gear set from he output gearset or the equivalent, depending on type of tranny. If a manual, pushing in the clutch while from the transmission. Which is slightly less drag than just pushing in the clutch on a manual, since when in neutral, the engine will neutralize drag on 1/2 of the transmission. With clutch in, the wheel have to overcome all of the drag.
The brake rotors also drag a small amount.
... please remove all 4 half shafts and try again. Or alternately, you can drop in out of a airplane nose first and measure terminal velocity. that eliminates rolling resistance and drivetrain losses.
TrainingBible Coaching
http://www.trainingbible.com
Last edited by:
motoguy128: May 31, 16 8:31