Quote:
Originally Posted by bestmapman
To get to 200 MPG highway, what is the most important aspect.
|
Aerodynamics, transmission, then powerplant/engine/fuel in that order. You can solve backwards for parameters to figure what ya need (lmk if ya need info/pointers). Based on my offhand calcs, you're probably gonna need the smallest Metro to have a drag coefficient of ~.12-13 and the best LRR tires pumped up a bit. Then, in order for the engine to operate as efficiently as possible the top gear ratio is going to have to be dropped significantly, the engine downsized, or both. Weight won't matter much compared to aero at that speed, so your best bet is to keep all the creature comforts and concentrate of aero then gearing. Basjoos could see ~130+mpg@65mph IMO w/ a taller fifth. You can also go diesel if you wanna "cheat" since diesel has ~12% more energy per gallon than gasoline and peak engine efficiency for gas/diesel is about the same.