Coast Down losses calculation
why should it increase? have similar conversation some days ago.. i means, theorically, more power, more friction, heat,etc, but how does really affect more power in the real life? i means, you have same gearbox, same shafts, clutch, these parts have X inertial/drivetrain losses, no matter how much power you Will have these parts Will have the same interial. if you increase rpm, then you are getting more drivetrain looses, but in the same rpm? i'd say not, i get always same drivetrain looses. ive seen a lot of ppl haveing problems with tires, slippage, these factors Will give you different drivetrain looses, maybe i have a bit advantage by using hub dyno and all runs are controlled, same time for ramps,etc, for rollers if you have a bit slippage you are getting wrong drivetrain loses, or a deformed tire.. ive seen some tuners increase power just by drivetrain looses..i think thats a hacked real readings , using different gear Will modify too drivetrain losses. attached some examples of cars i tested. i'd say maybe if power increase affect , in my dyno it's less tan 0.1%..
"lanzada 1" : NA car, many pulls.
"lanzada 2": another car, many pulls, you can see an increase of drivetrain looses by increase rpm, that would make sense to me.
"lanzada 3" : a turbo RWD car..nothing special, just i think it's very important to get always same drivetrain looses readings.
"Lanzada 4" : Testing a turbo car with different maps, so different boost pressure.
while im writing this, i noticed i only can upload only one image lool. i Will upload other images later.
i'd say in acceleration yes, not in desaceleration , but talking in numbers, how many hp? or percentage Will be noticed on dyno? i already said what i see in my dyno above.
yes, that's why i said maybe i have a bit advantage by using hub dyno, ive seen some ppl having a lot of drivetrain looses by using drag slicks!