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Old 10-21-2017, 03:57 PM   #18 (permalink)
aerohead
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Quote:
Originally Posted by tcaud View Post
@Aerohead, you seem to be suggesting that it's not worth trying to aeromod a car that usually is driven below 65mph. Which if that's the case then it's the case and no use worrying or wasting effort anymore.

Can we make the following observation, that high speed economy improvements are to be made thru aeromods, and low speed improvements through engine mods/behavioral alterations?
As of the mid-1980s,80% of available power was consumed by aerodynamic drag according to Hucho,with the remaining 20% to rolling resistance.
So it's pretty obvious that if you're looking for highway savings,then you're gonna attack air drag.
If only 20% of your driving is on the highway,then you're going to realize less benefit from aero mods.
In urban settings,traffic jams,slowing,acceleration,stops,etc. are going to eat into your fuel budget.This is where EVs and hybrids shines,as they can recover a large % of what would otherwise be entropy,as velocity is converted to brake heat.Plus,an electric motor has an equivalent BSFC which is a third of an ICE vehicle.
Reducing mass is the most important factor in stop and go.
It's expensive.
Avoiding traffic,if possible would be great.
Synchronized traffic lights would be great too.(we lose $62 for every $1 not spent on signal light synchronization).
Hyper-miling,as long as you don't affect the mpg of any other motorists around you.
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